libyaml-streamly 0.2.2 → 0.2.2.1
raw patch · 13 files changed
+13/−12994 lines, 13 filesdep +libyaml-clib
Dependencies added: libyaml-clib
Files
- ChangeLog.md +5/−0
- libyaml-streamly.cabal +8/−20
- libyaml_src/LICENSE +0/−20
- libyaml_src/api.c +0/−1400
- libyaml_src/dumper.c +0/−394
- libyaml_src/emitter.c +0/−2358
- libyaml_src/loader.c +0/−544
- libyaml_src/parser.c +0/−1375
- libyaml_src/reader.c +0/−469
- libyaml_src/scanner.c +0/−3598
- libyaml_src/writer.c +0/−141
- libyaml_src/yaml.h +0/−1985
- libyaml_src/yaml_private.h +0/−690
ChangeLog.md view
@@ -1,5 +1,10 @@ # Changelog for libyaml-streamly +## 0.2.2.1++* Use pkg-config when linking against system lib+* Use separate package `libyaml-clib` when using bundled sources+ ## 0.2.2 * pin streamly to < 0.9.0
libyaml-streamly.cabal view
@@ -1,6 +1,6 @@ cabal-version: 2.2 name: libyaml-streamly-version: 0.2.2+version: 0.2.2.1 synopsis: Low-level, streaming YAML interface via streamly. description: Rewrite of libyaml in streamly category: Text@@ -14,13 +14,11 @@ license: BSD-3-Clause license-file: LICENSE build-type: Simple-extra-source-files:- ./c/helper.h+extra-doc-files: ./ChangeLog.md- ./libyaml_src/LICENSE- ./libyaml_src/yaml.h- ./libyaml_src/yaml_private.h ./README.md+extra-source-files:+ ./c/helper.h source-repository head type: git@@ -36,7 +34,7 @@ flag system-libyaml description: Use the system-wide libyaml instead of the bundled copy manual: False- default: False+ default: True library exposed-modules: Text.Libyaml@@ -59,20 +57,10 @@ if flag(no-unicode) cpp-options: -D__NO_UNICODE__ - if !flag(system-libyaml)- include-dirs: libyaml_src- c-sources:- ./libyaml_src/api.c- ./libyaml_src/dumper.c- ./libyaml_src/emitter.c- ./libyaml_src/loader.c- ./libyaml_src/parser.c- ./libyaml_src/reader.c- ./libyaml_src/scanner.c- ./libyaml_src/writer.c-+ if flag(system-libyaml)+ pkgconfig-depends: yaml-0.1 else- extra-libraries: yaml+ build-depends: libyaml-clib if os(windows) cpp-options: -DWINDOWS
− libyaml_src/LICENSE
@@ -1,20 +0,0 @@-Copyright (c) 2017-2019 Ingy döt Net-Copyright (c) 2006-2016 Kirill Simonov--Permission is hereby granted, free of charge, to any person obtaining a copy of-this software and associated documentation files (the "Software"), to deal in-the Software without restriction, including without limitation the rights to-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies-of the Software, and to permit persons to whom the Software is furnished to do-so, subject to the following conditions:--The above copyright notice and this permission notice shall be included in all-copies or substantial portions of the Software.--THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE-SOFTWARE.
− libyaml_src/api.c
@@ -1,1400 +0,0 @@--#include "yaml_private.h"--/*- * Get the library version.- */--YAML_DECLARE(const char *)-yaml_get_version_string(void)-{- return YAML_VERSION_STRING;-}--/*- * Get the library version numbers.- */--YAML_DECLARE(void)-yaml_get_version(int *major, int *minor, int *patch)-{- *major = YAML_VERSION_MAJOR;- *minor = YAML_VERSION_MINOR;- *patch = YAML_VERSION_PATCH;-}--/*- * Allocate a dynamic memory block.- */--YAML_DECLARE(void *)-yaml_malloc(size_t size)-{- return malloc(size ? size : 1);-}--/*- * Reallocate a dynamic memory block.- */--YAML_DECLARE(void *)-yaml_realloc(void *ptr, size_t size)-{- return ptr ? realloc(ptr, size ? size : 1) : malloc(size ? size : 1);-}--/*- * Free a dynamic memory block.- */--YAML_DECLARE(void)-yaml_free(void *ptr)-{- if (ptr) free(ptr);-}--/*- * Duplicate a string.- */--YAML_DECLARE(yaml_char_t *)-yaml_strdup(const yaml_char_t *str)-{- if (!str)- return NULL;--/*- * Haskell yaml package: added to support _WIN64- */-#if _WIN64- return (yaml_char_t *)_strdup((char *)str);-#else- return (yaml_char_t *)strdup((char *)str);-#endif-}--/*- * Extend a string.- */--YAML_DECLARE(int)-yaml_string_extend(yaml_char_t **start,- yaml_char_t **pointer, yaml_char_t **end)-{- yaml_char_t *new_start = (yaml_char_t *)yaml_realloc((void*)*start, (*end - *start)*2);-- if (!new_start) return 0;-- memset(new_start + (*end - *start), 0, *end - *start);-- *pointer = new_start + (*pointer - *start);- *end = new_start + (*end - *start)*2;- *start = new_start;-- return 1;-}--/*- * Append a string B to a string A.- */--YAML_DECLARE(int)-yaml_string_join(- yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,- yaml_char_t **b_start, yaml_char_t **b_pointer, SHIM(yaml_char_t **b_end))-{- UNUSED_PARAM(b_end)- if (*b_start == *b_pointer)- return 1;-- while (*a_end - *a_pointer <= *b_pointer - *b_start) {- if (!yaml_string_extend(a_start, a_pointer, a_end))- return 0;- }-- memcpy(*a_pointer, *b_start, *b_pointer - *b_start);- *a_pointer += *b_pointer - *b_start;-- return 1;-}--/*- * Extend a stack.- */--YAML_DECLARE(int)-yaml_stack_extend(void **start, void **top, void **end)-{- void *new_start;-- if ((char *)*end - (char *)*start >= INT_MAX / 2)- return 0;-- new_start = yaml_realloc(*start, ((char *)*end - (char *)*start)*2);-- if (!new_start) return 0;-- *top = (char *)new_start + ((char *)*top - (char *)*start);- *end = (char *)new_start + ((char *)*end - (char *)*start)*2;- *start = new_start;-- return 1;-}--/*- * Extend or move a queue.- */--YAML_DECLARE(int)-yaml_queue_extend(void **start, void **head, void **tail, void **end)-{- /* Check if we need to resize the queue. */-- if (*start == *head && *tail == *end) {- void *new_start = yaml_realloc(*start,- ((char *)*end - (char *)*start)*2);-- if (!new_start) return 0;-- *head = (char *)new_start + ((char *)*head - (char *)*start);- *tail = (char *)new_start + ((char *)*tail - (char *)*start);- *end = (char *)new_start + ((char *)*end - (char *)*start)*2;- *start = new_start;- }-- /* Check if we need to move the queue at the beginning of the buffer. */-- if (*tail == *end) {- if (*head != *tail) {- memmove(*start, *head, (char *)*tail - (char *)*head);- }- *tail = (char *)*tail - (char *)*head + (char *)*start;- *head = *start;- }-- return 1;-}---/*- * Create a new parser object.- */--YAML_DECLARE(int)-yaml_parser_initialize(yaml_parser_t *parser)-{- assert(parser); /* Non-NULL parser object expected. */-- memset(parser, 0, sizeof(yaml_parser_t));- if (!BUFFER_INIT(parser, parser->raw_buffer, INPUT_RAW_BUFFER_SIZE))- goto error;- if (!BUFFER_INIT(parser, parser->buffer, INPUT_BUFFER_SIZE))- goto error;- if (!QUEUE_INIT(parser, parser->tokens, INITIAL_QUEUE_SIZE, yaml_token_t*))- goto error;- if (!STACK_INIT(parser, parser->indents, int*))- goto error;- if (!STACK_INIT(parser, parser->simple_keys, yaml_simple_key_t*))- goto error;- if (!STACK_INIT(parser, parser->states, yaml_parser_state_t*))- goto error;- if (!STACK_INIT(parser, parser->marks, yaml_mark_t*))- goto error;- if (!STACK_INIT(parser, parser->tag_directives, yaml_tag_directive_t*))- goto error;-- return 1;--error:-- BUFFER_DEL(parser, parser->raw_buffer);- BUFFER_DEL(parser, parser->buffer);- QUEUE_DEL(parser, parser->tokens);- STACK_DEL(parser, parser->indents);- STACK_DEL(parser, parser->simple_keys);- STACK_DEL(parser, parser->states);- STACK_DEL(parser, parser->marks);- STACK_DEL(parser, parser->tag_directives);-- return 0;-}--/*- * Destroy a parser object.- */--YAML_DECLARE(void)-yaml_parser_delete(yaml_parser_t *parser)-{- assert(parser); /* Non-NULL parser object expected. */-- BUFFER_DEL(parser, parser->raw_buffer);- BUFFER_DEL(parser, parser->buffer);- while (!QUEUE_EMPTY(parser, parser->tokens)) {- yaml_token_delete(&DEQUEUE(parser, parser->tokens));- }- QUEUE_DEL(parser, parser->tokens);- STACK_DEL(parser, parser->indents);- STACK_DEL(parser, parser->simple_keys);- STACK_DEL(parser, parser->states);- STACK_DEL(parser, parser->marks);- while (!STACK_EMPTY(parser, parser->tag_directives)) {- yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);- yaml_free(tag_directive.handle);- yaml_free(tag_directive.prefix);- }- STACK_DEL(parser, parser->tag_directives);-- memset(parser, 0, sizeof(yaml_parser_t));-}--/*- * String read handler.- */--static int-yaml_string_read_handler(void *data, unsigned char *buffer, size_t size,- size_t *size_read)-{- yaml_parser_t *parser = (yaml_parser_t *)data;-- if (parser->input.string.current == parser->input.string.end) {- *size_read = 0;- return 1;- }-- if (size > (size_t)(parser->input.string.end- - parser->input.string.current)) {- size = parser->input.string.end - parser->input.string.current;- }-- memcpy(buffer, parser->input.string.current, size);- parser->input.string.current += size;- *size_read = size;- return 1;-}--/*- * File read handler.- */--static int-yaml_file_read_handler(void *data, unsigned char *buffer, size_t size,- size_t *size_read)-{- yaml_parser_t *parser = (yaml_parser_t *)data;-- *size_read = fread(buffer, 1, size, parser->input.file);- return !ferror(parser->input.file);-}--/*- * Set a string input.- */--YAML_DECLARE(void)-yaml_parser_set_input_string(yaml_parser_t *parser,- const unsigned char *input, size_t size)-{- assert(parser); /* Non-NULL parser object expected. */- assert(!parser->read_handler); /* You can set the source only once. */- assert(input); /* Non-NULL input string expected. */-- parser->read_handler = yaml_string_read_handler;- parser->read_handler_data = parser;-- parser->input.string.start = input;- parser->input.string.current = input;- parser->input.string.end = input+size;-}--/*- * Set a file input.- */--YAML_DECLARE(void)-yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file)-{- assert(parser); /* Non-NULL parser object expected. */- assert(!parser->read_handler); /* You can set the source only once. */- assert(file); /* Non-NULL file object expected. */-- parser->read_handler = yaml_file_read_handler;- parser->read_handler_data = parser;-- parser->input.file = file;-}--/*- * Set a generic input.- */--YAML_DECLARE(void)-yaml_parser_set_input(yaml_parser_t *parser,- yaml_read_handler_t *handler, void *data)-{- assert(parser); /* Non-NULL parser object expected. */- assert(!parser->read_handler); /* You can set the source only once. */- assert(handler); /* Non-NULL read handler expected. */-- parser->read_handler = handler;- parser->read_handler_data = data;-}--/*- * Set the source encoding.- */--YAML_DECLARE(void)-yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding)-{- assert(parser); /* Non-NULL parser object expected. */- assert(!parser->encoding); /* Encoding is already set or detected. */-- parser->encoding = encoding;-}--/*- * Create a new emitter object.- */--YAML_DECLARE(int)-yaml_emitter_initialize(yaml_emitter_t *emitter)-{- assert(emitter); /* Non-NULL emitter object expected. */-- memset(emitter, 0, sizeof(yaml_emitter_t));- if (!BUFFER_INIT(emitter, emitter->buffer, OUTPUT_BUFFER_SIZE))- goto error;- if (!BUFFER_INIT(emitter, emitter->raw_buffer, OUTPUT_RAW_BUFFER_SIZE))- goto error;- if (!STACK_INIT(emitter, emitter->states, yaml_emitter_state_t*))- goto error;- if (!QUEUE_INIT(emitter, emitter->events, INITIAL_QUEUE_SIZE, yaml_event_t*))- goto error;- if (!STACK_INIT(emitter, emitter->indents, int*))- goto error;- if (!STACK_INIT(emitter, emitter->tag_directives, yaml_tag_directive_t*))- goto error;-- return 1;--error:-- BUFFER_DEL(emitter, emitter->buffer);- BUFFER_DEL(emitter, emitter->raw_buffer);- STACK_DEL(emitter, emitter->states);- QUEUE_DEL(emitter, emitter->events);- STACK_DEL(emitter, emitter->indents);- STACK_DEL(emitter, emitter->tag_directives);-- return 0;-}--/*- * Destroy an emitter object.- */--YAML_DECLARE(void)-yaml_emitter_delete(yaml_emitter_t *emitter)-{- assert(emitter); /* Non-NULL emitter object expected. */-- BUFFER_DEL(emitter, emitter->buffer);- BUFFER_DEL(emitter, emitter->raw_buffer);- STACK_DEL(emitter, emitter->states);- while (!QUEUE_EMPTY(emitter, emitter->events)) {- yaml_event_delete(&DEQUEUE(emitter, emitter->events));- }- QUEUE_DEL(emitter, emitter->events);- STACK_DEL(emitter, emitter->indents);- while (!STACK_EMPTY(empty, emitter->tag_directives)) {- yaml_tag_directive_t tag_directive = POP(emitter, emitter->tag_directives);- yaml_free(tag_directive.handle);- yaml_free(tag_directive.prefix);- }- STACK_DEL(emitter, emitter->tag_directives);- yaml_free(emitter->anchors);-- memset(emitter, 0, sizeof(yaml_emitter_t));-}--/*- * String write handler.- */--static int-yaml_string_write_handler(void *data, unsigned char *buffer, size_t size)-{- yaml_emitter_t *emitter = (yaml_emitter_t *)data;-- if (emitter->output.string.size - *emitter->output.string.size_written- < size) {- memcpy(emitter->output.string.buffer- + *emitter->output.string.size_written,- buffer,- emitter->output.string.size- - *emitter->output.string.size_written);- *emitter->output.string.size_written = emitter->output.string.size;- return 0;- }-- memcpy(emitter->output.string.buffer- + *emitter->output.string.size_written, buffer, size);- *emitter->output.string.size_written += size;- return 1;-}--/*- * File write handler.- */--static int-yaml_file_write_handler(void *data, unsigned char *buffer, size_t size)-{- yaml_emitter_t *emitter = (yaml_emitter_t *)data;-- return (fwrite(buffer, 1, size, emitter->output.file) == size);-}-/*- * Set a string output.- */--YAML_DECLARE(void)-yaml_emitter_set_output_string(yaml_emitter_t *emitter,- unsigned char *output, size_t size, size_t *size_written)-{- assert(emitter); /* Non-NULL emitter object expected. */- assert(!emitter->write_handler); /* You can set the output only once. */- assert(output); /* Non-NULL output string expected. */-- emitter->write_handler = yaml_string_write_handler;- emitter->write_handler_data = emitter;-- emitter->output.string.buffer = output;- emitter->output.string.size = size;- emitter->output.string.size_written = size_written;- *size_written = 0;-}--/*- * Set a file output.- */--YAML_DECLARE(void)-yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file)-{- assert(emitter); /* Non-NULL emitter object expected. */- assert(!emitter->write_handler); /* You can set the output only once. */- assert(file); /* Non-NULL file object expected. */-- emitter->write_handler = yaml_file_write_handler;- emitter->write_handler_data = emitter;-- emitter->output.file = file;-}--/*- * Set a generic output handler.- */--YAML_DECLARE(void)-yaml_emitter_set_output(yaml_emitter_t *emitter,- yaml_write_handler_t *handler, void *data)-{- assert(emitter); /* Non-NULL emitter object expected. */- assert(!emitter->write_handler); /* You can set the output only once. */- assert(handler); /* Non-NULL handler object expected. */-- emitter->write_handler = handler;- emitter->write_handler_data = data;-}--/*- * Set the output encoding.- */--YAML_DECLARE(void)-yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding)-{- assert(emitter); /* Non-NULL emitter object expected. */- assert(!emitter->encoding); /* You can set encoding only once. */-- emitter->encoding = encoding;-}--/*- * Set the canonical output style.- */--YAML_DECLARE(void)-yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical)-{- assert(emitter); /* Non-NULL emitter object expected. */-- emitter->canonical = (canonical != 0);-}--/*- * Set the indentation increment.- */--YAML_DECLARE(void)-yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent)-{- assert(emitter); /* Non-NULL emitter object expected. */-- emitter->best_indent = (1 < indent && indent < 10) ? indent : 2;-}--/*- * Set the preferred line width.- */--YAML_DECLARE(void)-yaml_emitter_set_width(yaml_emitter_t *emitter, int width)-{- assert(emitter); /* Non-NULL emitter object expected. */-- emitter->best_width = (width >= 0) ? width : -1;-}--/*- * Set if unescaped non-ASCII characters are allowed.- */--YAML_DECLARE(void)-yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode)-{- assert(emitter); /* Non-NULL emitter object expected. */-- emitter->unicode = (unicode != 0);-}--/*- * Set the preferred line break character.- */--YAML_DECLARE(void)-yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break)-{- assert(emitter); /* Non-NULL emitter object expected. */-- emitter->line_break = line_break;-}--/*- * Destroy a token object.- */--YAML_DECLARE(void)-yaml_token_delete(yaml_token_t *token)-{- assert(token); /* Non-NULL token object expected. */-- switch (token->type)- {- case YAML_TAG_DIRECTIVE_TOKEN:- yaml_free(token->data.tag_directive.handle);- yaml_free(token->data.tag_directive.prefix);- break;-- case YAML_ALIAS_TOKEN:- yaml_free(token->data.alias.value);- break;-- case YAML_ANCHOR_TOKEN:- yaml_free(token->data.anchor.value);- break;-- case YAML_TAG_TOKEN:- yaml_free(token->data.tag.handle);- yaml_free(token->data.tag.suffix);- break;-- case YAML_SCALAR_TOKEN:- yaml_free(token->data.scalar.value);- break;-- default:- break;- }-- memset(token, 0, sizeof(yaml_token_t));-}--/*- * Check if a string is a valid UTF-8 sequence.- *- * Check 'reader.c' for more details on UTF-8 encoding.- */--static int-yaml_check_utf8(const yaml_char_t *start, size_t length)-{- const yaml_char_t *end = start+length;- const yaml_char_t *pointer = start;-- while (pointer < end) {- unsigned char octet;- unsigned int width;- unsigned int value;- size_t k;-- octet = pointer[0];- width = (octet & 0x80) == 0x00 ? 1 :- (octet & 0xE0) == 0xC0 ? 2 :- (octet & 0xF0) == 0xE0 ? 3 :- (octet & 0xF8) == 0xF0 ? 4 : 0;- value = (octet & 0x80) == 0x00 ? octet & 0x7F :- (octet & 0xE0) == 0xC0 ? octet & 0x1F :- (octet & 0xF0) == 0xE0 ? octet & 0x0F :- (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;- if (!width) return 0;- if (pointer+width > end) return 0;- for (k = 1; k < width; k ++) {- octet = pointer[k];- if ((octet & 0xC0) != 0x80) return 0;- value = (value << 6) + (octet & 0x3F);- }- if (!((width == 1) ||- (width == 2 && value >= 0x80) ||- (width == 3 && value >= 0x800) ||- (width == 4 && value >= 0x10000))) return 0;-- pointer += width;- }-- return 1;-}--/*- * Create STREAM-START.- */--YAML_DECLARE(int)-yaml_stream_start_event_initialize(yaml_event_t *event,- yaml_encoding_t encoding)-{- yaml_mark_t mark = { 0, 0, 0 };-- assert(event); /* Non-NULL event object is expected. */-- STREAM_START_EVENT_INIT(*event, encoding, mark, mark);-- return 1;-}--/*- * Create STREAM-END.- */--YAML_DECLARE(int)-yaml_stream_end_event_initialize(yaml_event_t *event)-{- yaml_mark_t mark = { 0, 0, 0 };-- assert(event); /* Non-NULL event object is expected. */-- STREAM_END_EVENT_INIT(*event, mark, mark);-- return 1;-}--/*- * Create DOCUMENT-START.- */--YAML_DECLARE(int)-yaml_document_start_event_initialize(yaml_event_t *event,- yaml_version_directive_t *version_directive,- yaml_tag_directive_t *tag_directives_start,- yaml_tag_directive_t *tag_directives_end,- int implicit)-{- struct {- yaml_error_type_t error;- } context;- yaml_mark_t mark = { 0, 0, 0 };- yaml_version_directive_t *version_directive_copy = NULL;- struct {- yaml_tag_directive_t *start;- yaml_tag_directive_t *end;- yaml_tag_directive_t *top;- } tag_directives_copy = { NULL, NULL, NULL };- yaml_tag_directive_t value = { NULL, NULL };-- assert(event); /* Non-NULL event object is expected. */- assert((tag_directives_start && tag_directives_end) ||- (tag_directives_start == tag_directives_end));- /* Valid tag directives are expected. */-- if (version_directive) {- version_directive_copy = YAML_MALLOC_STATIC(yaml_version_directive_t);- if (!version_directive_copy) goto error;- version_directive_copy->major = version_directive->major;- version_directive_copy->minor = version_directive->minor;- }-- if (tag_directives_start != tag_directives_end) {- yaml_tag_directive_t *tag_directive;- if (!STACK_INIT(&context, tag_directives_copy, yaml_tag_directive_t*))- goto error;- for (tag_directive = tag_directives_start;- tag_directive != tag_directives_end; tag_directive ++) {- assert(tag_directive->handle);- assert(tag_directive->prefix);- if (!yaml_check_utf8(tag_directive->handle,- strlen((char *)tag_directive->handle)))- goto error;- if (!yaml_check_utf8(tag_directive->prefix,- strlen((char *)tag_directive->prefix)))- goto error;- value.handle = yaml_strdup(tag_directive->handle);- value.prefix = yaml_strdup(tag_directive->prefix);- if (!value.handle || !value.prefix) goto error;- if (!PUSH(&context, tag_directives_copy, value))- goto error;- value.handle = NULL;- value.prefix = NULL;- }- }-- DOCUMENT_START_EVENT_INIT(*event, version_directive_copy,- tag_directives_copy.start, tag_directives_copy.top,- implicit, mark, mark);-- return 1;--error:- yaml_free(version_directive_copy);- while (!STACK_EMPTY(context, tag_directives_copy)) {- yaml_tag_directive_t value = POP(context, tag_directives_copy);- yaml_free(value.handle);- yaml_free(value.prefix);- }- STACK_DEL(context, tag_directives_copy);- yaml_free(value.handle);- yaml_free(value.prefix);-- return 0;-}--/*- * Create DOCUMENT-END.- */--YAML_DECLARE(int)-yaml_document_end_event_initialize(yaml_event_t *event, int implicit)-{- yaml_mark_t mark = { 0, 0, 0 };-- assert(event); /* Non-NULL emitter object is expected. */-- DOCUMENT_END_EVENT_INIT(*event, implicit, mark, mark);-- return 1;-}--/*- * Create ALIAS.- */--YAML_DECLARE(int)-yaml_alias_event_initialize(yaml_event_t *event, const yaml_char_t *anchor)-{- yaml_mark_t mark = { 0, 0, 0 };- yaml_char_t *anchor_copy = NULL;-- assert(event); /* Non-NULL event object is expected. */- assert(anchor); /* Non-NULL anchor is expected. */-- if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0;-- anchor_copy = yaml_strdup(anchor);- if (!anchor_copy)- return 0;-- ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark);-- return 1;-}--/*- * Create SCALAR.- */--YAML_DECLARE(int)-yaml_scalar_event_initialize(yaml_event_t *event,- const yaml_char_t *anchor, const yaml_char_t *tag,- const yaml_char_t *value, int length,- int plain_implicit, int quoted_implicit,- yaml_scalar_style_t style)-{- yaml_mark_t mark = { 0, 0, 0 };- yaml_char_t *anchor_copy = NULL;- yaml_char_t *tag_copy = NULL;- yaml_char_t *value_copy = NULL;-- assert(event); /* Non-NULL event object is expected. */- assert(value); /* Non-NULL anchor is expected. */-- if (anchor) {- if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;- anchor_copy = yaml_strdup(anchor);- if (!anchor_copy) goto error;- }-- if (tag) {- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;- tag_copy = yaml_strdup(tag);- if (!tag_copy) goto error;- }-- if (length < 0) {- length = strlen((char *)value);- }-- if (!yaml_check_utf8(value, length)) goto error;- value_copy = YAML_MALLOC(length+1);- if (!value_copy) goto error;- memcpy(value_copy, value, length);- value_copy[length] = '\0';-- SCALAR_EVENT_INIT(*event, anchor_copy, tag_copy, value_copy, length,- plain_implicit, quoted_implicit, style, mark, mark);-- return 1;--error:- yaml_free(anchor_copy);- yaml_free(tag_copy);- yaml_free(value_copy);-- return 0;-}--/*- * Create SEQUENCE-START.- */--YAML_DECLARE(int)-yaml_sequence_start_event_initialize(yaml_event_t *event,- const yaml_char_t *anchor, const yaml_char_t *tag, int implicit,- yaml_sequence_style_t style)-{- yaml_mark_t mark = { 0, 0, 0 };- yaml_char_t *anchor_copy = NULL;- yaml_char_t *tag_copy = NULL;-- assert(event); /* Non-NULL event object is expected. */-- if (anchor) {- if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;- anchor_copy = yaml_strdup(anchor);- if (!anchor_copy) goto error;- }-- if (tag) {- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;- tag_copy = yaml_strdup(tag);- if (!tag_copy) goto error;- }-- SEQUENCE_START_EVENT_INIT(*event, anchor_copy, tag_copy,- implicit, style, mark, mark);-- return 1;--error:- yaml_free(anchor_copy);- yaml_free(tag_copy);-- return 0;-}--/*- * Create SEQUENCE-END.- */--YAML_DECLARE(int)-yaml_sequence_end_event_initialize(yaml_event_t *event)-{- yaml_mark_t mark = { 0, 0, 0 };-- assert(event); /* Non-NULL event object is expected. */-- SEQUENCE_END_EVENT_INIT(*event, mark, mark);-- return 1;-}--/*- * Create MAPPING-START.- */--YAML_DECLARE(int)-yaml_mapping_start_event_initialize(yaml_event_t *event,- const yaml_char_t *anchor, const yaml_char_t *tag, int implicit,- yaml_mapping_style_t style)-{- yaml_mark_t mark = { 0, 0, 0 };- yaml_char_t *anchor_copy = NULL;- yaml_char_t *tag_copy = NULL;-- assert(event); /* Non-NULL event object is expected. */-- if (anchor) {- if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;- anchor_copy = yaml_strdup(anchor);- if (!anchor_copy) goto error;- }-- if (tag) {- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;- tag_copy = yaml_strdup(tag);- if (!tag_copy) goto error;- }-- MAPPING_START_EVENT_INIT(*event, anchor_copy, tag_copy,- implicit, style, mark, mark);-- return 1;--error:- yaml_free(anchor_copy);- yaml_free(tag_copy);-- return 0;-}--/*- * Create MAPPING-END.- */--YAML_DECLARE(int)-yaml_mapping_end_event_initialize(yaml_event_t *event)-{- yaml_mark_t mark = { 0, 0, 0 };-- assert(event); /* Non-NULL event object is expected. */-- MAPPING_END_EVENT_INIT(*event, mark, mark);-- return 1;-}--/*- * Destroy an event object.- */--YAML_DECLARE(void)-yaml_event_delete(yaml_event_t *event)-{- yaml_tag_directive_t *tag_directive;-- assert(event); /* Non-NULL event object expected. */-- switch (event->type)- {- case YAML_DOCUMENT_START_EVENT:- yaml_free(event->data.document_start.version_directive);- for (tag_directive = event->data.document_start.tag_directives.start;- tag_directive != event->data.document_start.tag_directives.end;- tag_directive++) {- yaml_free(tag_directive->handle);- yaml_free(tag_directive->prefix);- }- yaml_free(event->data.document_start.tag_directives.start);- break;-- case YAML_ALIAS_EVENT:- yaml_free(event->data.alias.anchor);- break;-- case YAML_SCALAR_EVENT:- yaml_free(event->data.scalar.anchor);- yaml_free(event->data.scalar.tag);- yaml_free(event->data.scalar.value);- break;-- case YAML_SEQUENCE_START_EVENT:- yaml_free(event->data.sequence_start.anchor);- yaml_free(event->data.sequence_start.tag);- break;-- case YAML_MAPPING_START_EVENT:- yaml_free(event->data.mapping_start.anchor);- yaml_free(event->data.mapping_start.tag);- break;-- default:- break;- }-- memset(event, 0, sizeof(yaml_event_t));-}--/*- * Create a document object.- */--YAML_DECLARE(int)-yaml_document_initialize(yaml_document_t *document,- yaml_version_directive_t *version_directive,- yaml_tag_directive_t *tag_directives_start,- yaml_tag_directive_t *tag_directives_end,- int start_implicit, int end_implicit)-{- struct {- yaml_error_type_t error;- } context;- struct {- yaml_node_t *start;- yaml_node_t *end;- yaml_node_t *top;- } nodes = { NULL, NULL, NULL };- yaml_version_directive_t *version_directive_copy = NULL;- struct {- yaml_tag_directive_t *start;- yaml_tag_directive_t *end;- yaml_tag_directive_t *top;- } tag_directives_copy = { NULL, NULL, NULL };- yaml_tag_directive_t value = { NULL, NULL };- yaml_mark_t mark = { 0, 0, 0 };-- assert(document); /* Non-NULL document object is expected. */- assert((tag_directives_start && tag_directives_end) ||- (tag_directives_start == tag_directives_end));- /* Valid tag directives are expected. */-- if (!STACK_INIT(&context, nodes, yaml_node_t*)) goto error;-- if (version_directive) {- version_directive_copy = YAML_MALLOC_STATIC(yaml_version_directive_t);- if (!version_directive_copy) goto error;- version_directive_copy->major = version_directive->major;- version_directive_copy->minor = version_directive->minor;- }-- if (tag_directives_start != tag_directives_end) {- yaml_tag_directive_t *tag_directive;- if (!STACK_INIT(&context, tag_directives_copy, yaml_tag_directive_t*))- goto error;- for (tag_directive = tag_directives_start;- tag_directive != tag_directives_end; tag_directive ++) {- assert(tag_directive->handle);- assert(tag_directive->prefix);- if (!yaml_check_utf8(tag_directive->handle,- strlen((char *)tag_directive->handle)))- goto error;- if (!yaml_check_utf8(tag_directive->prefix,- strlen((char *)tag_directive->prefix)))- goto error;- value.handle = yaml_strdup(tag_directive->handle);- value.prefix = yaml_strdup(tag_directive->prefix);- if (!value.handle || !value.prefix) goto error;- if (!PUSH(&context, tag_directives_copy, value))- goto error;- value.handle = NULL;- value.prefix = NULL;- }- }-- DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,- tag_directives_copy.start, tag_directives_copy.top,- start_implicit, end_implicit, mark, mark);-- return 1;--error:- STACK_DEL(&context, nodes);- yaml_free(version_directive_copy);- while (!STACK_EMPTY(&context, tag_directives_copy)) {- yaml_tag_directive_t value = POP(&context, tag_directives_copy);- yaml_free(value.handle);- yaml_free(value.prefix);- }- STACK_DEL(&context, tag_directives_copy);- yaml_free(value.handle);- yaml_free(value.prefix);-- return 0;-}--/*- * Destroy a document object.- */--YAML_DECLARE(void)-yaml_document_delete(yaml_document_t *document)-{- yaml_tag_directive_t *tag_directive;-- assert(document); /* Non-NULL document object is expected. */-- while (!STACK_EMPTY(&context, document->nodes)) {- yaml_node_t node = POP(&context, document->nodes);- yaml_free(node.tag);- switch (node.type) {- case YAML_SCALAR_NODE:- yaml_free(node.data.scalar.value);- break;- case YAML_SEQUENCE_NODE:- STACK_DEL(&context, node.data.sequence.items);- break;- case YAML_MAPPING_NODE:- STACK_DEL(&context, node.data.mapping.pairs);- break;- default:- assert(0); /* Should not happen. */- }- }- STACK_DEL(&context, document->nodes);-- yaml_free(document->version_directive);- for (tag_directive = document->tag_directives.start;- tag_directive != document->tag_directives.end;- tag_directive++) {- yaml_free(tag_directive->handle);- yaml_free(tag_directive->prefix);- }- yaml_free(document->tag_directives.start);-- memset(document, 0, sizeof(yaml_document_t));-}--/**- * Get a document node.- */--YAML_DECLARE(yaml_node_t *)-yaml_document_get_node(yaml_document_t *document, int index)-{- assert(document); /* Non-NULL document object is expected. */-- if (index > 0 && document->nodes.start + index <= document->nodes.top) {- return document->nodes.start + index - 1;- }- return NULL;-}--/**- * Get the root object.- */--YAML_DECLARE(yaml_node_t *)-yaml_document_get_root_node(yaml_document_t *document)-{- assert(document); /* Non-NULL document object is expected. */-- if (document->nodes.top != document->nodes.start) {- return document->nodes.start;- }- return NULL;-}--/*- * Add a scalar node to a document.- */--YAML_DECLARE(int)-yaml_document_add_scalar(yaml_document_t *document,- const yaml_char_t *tag, const yaml_char_t *value, int length,- yaml_scalar_style_t style)-{- struct {- yaml_error_type_t error;- } context;- yaml_mark_t mark = { 0, 0, 0 };- yaml_char_t *tag_copy = NULL;- yaml_char_t *value_copy = NULL;- yaml_node_t node;-- assert(document); /* Non-NULL document object is expected. */- assert(value); /* Non-NULL value is expected. */-- if (!tag) {- tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG;- }-- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;- tag_copy = yaml_strdup(tag);- if (!tag_copy) goto error;-- if (length < 0) {- length = strlen((char *)value);- }-- if (!yaml_check_utf8(value, length)) goto error;- value_copy = YAML_MALLOC(length+1);- if (!value_copy) goto error;- memcpy(value_copy, value, length);- value_copy[length] = '\0';-- SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark);- if (!PUSH(&context, document->nodes, node)) goto error;-- return document->nodes.top - document->nodes.start;--error:- yaml_free(tag_copy);- yaml_free(value_copy);-- return 0;-}--/*- * Add a sequence node to a document.- */--YAML_DECLARE(int)-yaml_document_add_sequence(yaml_document_t *document,- const yaml_char_t *tag, yaml_sequence_style_t style)-{- struct {- yaml_error_type_t error;- } context;- yaml_mark_t mark = { 0, 0, 0 };- yaml_char_t *tag_copy = NULL;- struct {- yaml_node_item_t *start;- yaml_node_item_t *end;- yaml_node_item_t *top;- } items = { NULL, NULL, NULL };- yaml_node_t node;-- assert(document); /* Non-NULL document object is expected. */-- if (!tag) {- tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG;- }-- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;- tag_copy = yaml_strdup(tag);- if (!tag_copy) goto error;-- if (!STACK_INIT(&context, items, yaml_node_item_t*)) goto error;-- SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,- style, mark, mark);- if (!PUSH(&context, document->nodes, node)) goto error;-- return document->nodes.top - document->nodes.start;--error:- STACK_DEL(&context, items);- yaml_free(tag_copy);-- return 0;-}--/*- * Add a mapping node to a document.- */--YAML_DECLARE(int)-yaml_document_add_mapping(yaml_document_t *document,- const yaml_char_t *tag, yaml_mapping_style_t style)-{- struct {- yaml_error_type_t error;- } context;- yaml_mark_t mark = { 0, 0, 0 };- yaml_char_t *tag_copy = NULL;- struct {- yaml_node_pair_t *start;- yaml_node_pair_t *end;- yaml_node_pair_t *top;- } pairs = { NULL, NULL, NULL };- yaml_node_t node;-- assert(document); /* Non-NULL document object is expected. */-- if (!tag) {- tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG;- }-- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;- tag_copy = yaml_strdup(tag);- if (!tag_copy) goto error;-- if (!STACK_INIT(&context, pairs, yaml_node_pair_t*)) goto error;-- MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,- style, mark, mark);- if (!PUSH(&context, document->nodes, node)) goto error;-- return document->nodes.top - document->nodes.start;--error:- STACK_DEL(&context, pairs);- yaml_free(tag_copy);-- return 0;-}--/*- * Append an item to a sequence node.- */--YAML_DECLARE(int)-yaml_document_append_sequence_item(yaml_document_t *document,- int sequence, int item)-{- struct {- yaml_error_type_t error;- } context;-- assert(document); /* Non-NULL document is required. */- assert(sequence > 0- && document->nodes.start + sequence <= document->nodes.top);- /* Valid sequence id is required. */- assert(document->nodes.start[sequence-1].type == YAML_SEQUENCE_NODE);- /* A sequence node is required. */- assert(item > 0 && document->nodes.start + item <= document->nodes.top);- /* Valid item id is required. */-- if (!PUSH(&context,- document->nodes.start[sequence-1].data.sequence.items, item))- return 0;-- return 1;-}--/*- * Append a pair of a key and a value to a mapping node.- */--YAML_DECLARE(int)-yaml_document_append_mapping_pair(yaml_document_t *document,- int mapping, int key, int value)-{- struct {- yaml_error_type_t error;- } context;-- yaml_node_pair_t pair;-- assert(document); /* Non-NULL document is required. */- assert(mapping > 0- && document->nodes.start + mapping <= document->nodes.top);- /* Valid mapping id is required. */- assert(document->nodes.start[mapping-1].type == YAML_MAPPING_NODE);- /* A mapping node is required. */- assert(key > 0 && document->nodes.start + key <= document->nodes.top);- /* Valid key id is required. */- assert(value > 0 && document->nodes.start + value <= document->nodes.top);- /* Valid value id is required. */-- pair.key = key;- pair.value = value;-- if (!PUSH(&context,- document->nodes.start[mapping-1].data.mapping.pairs, pair))- return 0;-- return 1;-}--
− libyaml_src/dumper.c
@@ -1,394 +0,0 @@--#include "yaml_private.h"--/*- * API functions.- */--YAML_DECLARE(int)-yaml_emitter_open(yaml_emitter_t *emitter);--YAML_DECLARE(int)-yaml_emitter_close(yaml_emitter_t *emitter);--YAML_DECLARE(int)-yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document);--/*- * Clean up functions.- */--static void-yaml_emitter_delete_document_and_anchors(yaml_emitter_t *emitter);--/*- * Anchor functions.- */--static void-yaml_emitter_anchor_node(yaml_emitter_t *emitter, int index);--static yaml_char_t *-yaml_emitter_generate_anchor(yaml_emitter_t *emitter, int anchor_id);---/*- * Serialize functions.- */--static int-yaml_emitter_dump_node(yaml_emitter_t *emitter, int index);--static int-yaml_emitter_dump_alias(yaml_emitter_t *emitter, yaml_char_t *anchor);--static int-yaml_emitter_dump_scalar(yaml_emitter_t *emitter, yaml_node_t *node,- yaml_char_t *anchor);--static int-yaml_emitter_dump_sequence(yaml_emitter_t *emitter, yaml_node_t *node,- yaml_char_t *anchor);--static int-yaml_emitter_dump_mapping(yaml_emitter_t *emitter, yaml_node_t *node,- yaml_char_t *anchor);--/*- * Issue a STREAM-START event.- */--YAML_DECLARE(int)-yaml_emitter_open(yaml_emitter_t *emitter)-{- yaml_event_t event;- yaml_mark_t mark = { 0, 0, 0 };-- assert(emitter); /* Non-NULL emitter object is required. */- assert(!emitter->opened); /* Emitter should not be opened yet. */-- STREAM_START_EVENT_INIT(event, YAML_ANY_ENCODING, mark, mark);-- if (!yaml_emitter_emit(emitter, &event)) {- return 0;- }-- emitter->opened = 1;-- return 1;-}--/*- * Issue a STREAM-END event.- */--YAML_DECLARE(int)-yaml_emitter_close(yaml_emitter_t *emitter)-{- yaml_event_t event;- yaml_mark_t mark = { 0, 0, 0 };-- assert(emitter); /* Non-NULL emitter object is required. */- assert(emitter->opened); /* Emitter should be opened. */-- if (emitter->closed) return 1;-- STREAM_END_EVENT_INIT(event, mark, mark);-- if (!yaml_emitter_emit(emitter, &event)) {- return 0;- }-- emitter->closed = 1;-- return 1;-}--/*- * Dump a YAML document.- */--YAML_DECLARE(int)-yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document)-{- yaml_event_t event;- yaml_mark_t mark = { 0, 0, 0 };-- assert(emitter); /* Non-NULL emitter object is required. */- assert(document); /* Non-NULL emitter object is expected. */-- emitter->document = document;-- if (!emitter->opened) {- if (!yaml_emitter_open(emitter)) goto error;- }-- if (STACK_EMPTY(emitter, document->nodes)) {- if (!yaml_emitter_close(emitter)) goto error;- yaml_emitter_delete_document_and_anchors(emitter);- return 1;- }-- assert(emitter->opened); /* Emitter should be opened. */-- emitter->anchors = (yaml_anchors_t*)yaml_malloc(sizeof(*(emitter->anchors))- * (document->nodes.top - document->nodes.start));- if (!emitter->anchors) goto error;- memset(emitter->anchors, 0, sizeof(*(emitter->anchors))- * (document->nodes.top - document->nodes.start));-- DOCUMENT_START_EVENT_INIT(event, document->version_directive,- document->tag_directives.start, document->tag_directives.end,- document->start_implicit, mark, mark);- if (!yaml_emitter_emit(emitter, &event)) goto error;-- yaml_emitter_anchor_node(emitter, 1);- if (!yaml_emitter_dump_node(emitter, 1)) goto error;-- DOCUMENT_END_EVENT_INIT(event, document->end_implicit, mark, mark);- if (!yaml_emitter_emit(emitter, &event)) goto error;-- yaml_emitter_delete_document_and_anchors(emitter);-- return 1;--error:-- yaml_emitter_delete_document_and_anchors(emitter);-- return 0;-}--/*- * Clean up the emitter object after a document is dumped.- */--static void-yaml_emitter_delete_document_and_anchors(yaml_emitter_t *emitter)-{- int index;-- if (!emitter->anchors) {- yaml_document_delete(emitter->document);- emitter->document = NULL;- return;- }-- for (index = 0; emitter->document->nodes.start + index- < emitter->document->nodes.top; index ++) {- yaml_node_t node = emitter->document->nodes.start[index];- if (!emitter->anchors[index].serialized) {- yaml_free(node.tag);- if (node.type == YAML_SCALAR_NODE) {- yaml_free(node.data.scalar.value);- }- }- if (node.type == YAML_SEQUENCE_NODE) {- STACK_DEL(emitter, node.data.sequence.items);- }- if (node.type == YAML_MAPPING_NODE) {- STACK_DEL(emitter, node.data.mapping.pairs);- }- }-- STACK_DEL(emitter, emitter->document->nodes);- yaml_free(emitter->anchors);-- emitter->anchors = NULL;- emitter->last_anchor_id = 0;- emitter->document = NULL;-}--/*- * Check the references of a node and assign the anchor id if needed.- */--static void-yaml_emitter_anchor_node(yaml_emitter_t *emitter, int index)-{- yaml_node_t *node = emitter->document->nodes.start + index - 1;- yaml_node_item_t *item;- yaml_node_pair_t *pair;-- emitter->anchors[index-1].references ++;-- if (emitter->anchors[index-1].references == 1) {- switch (node->type) {- case YAML_SEQUENCE_NODE:- for (item = node->data.sequence.items.start;- item < node->data.sequence.items.top; item ++) {- yaml_emitter_anchor_node(emitter, *item);- }- break;- case YAML_MAPPING_NODE:- for (pair = node->data.mapping.pairs.start;- pair < node->data.mapping.pairs.top; pair ++) {- yaml_emitter_anchor_node(emitter, pair->key);- yaml_emitter_anchor_node(emitter, pair->value);- }- break;- default:- break;- }- }-- else if (emitter->anchors[index-1].references == 2) {- emitter->anchors[index-1].anchor = (++ emitter->last_anchor_id);- }-}--/*- * Generate a textual representation for an anchor.- */--#define ANCHOR_TEMPLATE "id%03d"-#define ANCHOR_TEMPLATE_LENGTH 16--static yaml_char_t *-yaml_emitter_generate_anchor(SHIM(yaml_emitter_t *emitter), int anchor_id)-{- yaml_char_t *anchor = YAML_MALLOC(ANCHOR_TEMPLATE_LENGTH);-- if (!anchor) return NULL;-- sprintf((char *)anchor, ANCHOR_TEMPLATE, anchor_id);-- return anchor;-}--/*- * Serialize a node.- */--static int-yaml_emitter_dump_node(yaml_emitter_t *emitter, int index)-{- yaml_node_t *node = emitter->document->nodes.start + index - 1;- int anchor_id = emitter->anchors[index-1].anchor;- yaml_char_t *anchor = NULL;-- if (anchor_id) {- anchor = yaml_emitter_generate_anchor(emitter, anchor_id);- if (!anchor) return 0;- }-- if (emitter->anchors[index-1].serialized) {- return yaml_emitter_dump_alias(emitter, anchor);- }-- emitter->anchors[index-1].serialized = 1;-- switch (node->type) {- case YAML_SCALAR_NODE:- return yaml_emitter_dump_scalar(emitter, node, anchor);- case YAML_SEQUENCE_NODE:- return yaml_emitter_dump_sequence(emitter, node, anchor);- case YAML_MAPPING_NODE:- return yaml_emitter_dump_mapping(emitter, node, anchor);- default:- assert(0); /* Could not happen. */- break;- }-- return 0; /* Could not happen. */-}--/*- * Serialize an alias.- */--static int-yaml_emitter_dump_alias(yaml_emitter_t *emitter, yaml_char_t *anchor)-{- yaml_event_t event;- yaml_mark_t mark = { 0, 0, 0 };-- ALIAS_EVENT_INIT(event, anchor, mark, mark);-- return yaml_emitter_emit(emitter, &event);-}--/*- * Serialize a scalar.- */--static int-yaml_emitter_dump_scalar(yaml_emitter_t *emitter, yaml_node_t *node,- yaml_char_t *anchor)-{- yaml_event_t event;- yaml_mark_t mark = { 0, 0, 0 };-- int plain_implicit = (strcmp((char *)node->tag,- YAML_DEFAULT_SCALAR_TAG) == 0);- int quoted_implicit = (strcmp((char *)node->tag,- YAML_DEFAULT_SCALAR_TAG) == 0);-- SCALAR_EVENT_INIT(event, anchor, node->tag, node->data.scalar.value,- node->data.scalar.length, plain_implicit, quoted_implicit,- node->data.scalar.style, mark, mark);-- return yaml_emitter_emit(emitter, &event);-}--/*- * Serialize a sequence.- */--static int-yaml_emitter_dump_sequence(yaml_emitter_t *emitter, yaml_node_t *node,- yaml_char_t *anchor)-{- yaml_event_t event;- yaml_mark_t mark = { 0, 0, 0 };-- int implicit = (strcmp((char *)node->tag, YAML_DEFAULT_SEQUENCE_TAG) == 0);-- yaml_node_item_t *item;-- SEQUENCE_START_EVENT_INIT(event, anchor, node->tag, implicit,- node->data.sequence.style, mark, mark);- if (!yaml_emitter_emit(emitter, &event)) return 0;-- for (item = node->data.sequence.items.start;- item < node->data.sequence.items.top; item ++) {- if (!yaml_emitter_dump_node(emitter, *item)) return 0;- }-- SEQUENCE_END_EVENT_INIT(event, mark, mark);- if (!yaml_emitter_emit(emitter, &event)) return 0;-- return 1;-}--/*- * Serialize a mapping.- */--static int-yaml_emitter_dump_mapping(yaml_emitter_t *emitter, yaml_node_t *node,- yaml_char_t *anchor)-{- yaml_event_t event;- yaml_mark_t mark = { 0, 0, 0 };-- int implicit = (strcmp((char *)node->tag, YAML_DEFAULT_MAPPING_TAG) == 0);-- yaml_node_pair_t *pair;-- MAPPING_START_EVENT_INIT(event, anchor, node->tag, implicit,- node->data.mapping.style, mark, mark);- if (!yaml_emitter_emit(emitter, &event)) return 0;-- for (pair = node->data.mapping.pairs.start;- pair < node->data.mapping.pairs.top; pair ++) {- if (!yaml_emitter_dump_node(emitter, pair->key)) return 0;- if (!yaml_emitter_dump_node(emitter, pair->value)) return 0;- }-- MAPPING_END_EVENT_INIT(event, mark, mark);- if (!yaml_emitter_emit(emitter, &event)) return 0;-- return 1;-}-
− libyaml_src/emitter.c
@@ -1,2358 +0,0 @@--#include "yaml_private.h"--/*- * Flush the buffer if needed.- */--#define FLUSH(emitter) \- ((emitter->buffer.pointer+5 < emitter->buffer.end) \- || yaml_emitter_flush(emitter))--/*- * Put a character to the output buffer.- */--#define PUT(emitter,value) \- (FLUSH(emitter) \- && (*(emitter->buffer.pointer++) = (yaml_char_t)(value), \- emitter->column++, \- 1))--/*- * Put a line break to the output buffer.- */--#define PUT_BREAK(emitter) \- (FLUSH(emitter) \- && ((emitter->line_break == YAML_CR_BREAK ? \- (*(emitter->buffer.pointer++) = (yaml_char_t) '\r') : \- emitter->line_break == YAML_LN_BREAK ? \- (*(emitter->buffer.pointer++) = (yaml_char_t) '\n') : \- emitter->line_break == YAML_CRLN_BREAK ? \- (*(emitter->buffer.pointer++) = (yaml_char_t) '\r', \- *(emitter->buffer.pointer++) = (yaml_char_t) '\n') : 0), \- emitter->column = 0, \- emitter->line ++, \- 1))--/*- * Copy a character from a string into buffer.- */--#define WRITE(emitter,string) \- (FLUSH(emitter) \- && (COPY(emitter->buffer,string), \- emitter->column ++, \- 1))--/*- * Copy a line break character from a string into buffer.- */--#define WRITE_BREAK(emitter,string) \- (FLUSH(emitter) \- && (CHECK(string,'\n') ? \- (PUT_BREAK(emitter), \- string.pointer ++, \- 1) : \- (COPY(emitter->buffer,string), \- emitter->column = 0, \- emitter->line ++, \- 1)))--/*- * API functions.- */--YAML_DECLARE(int)-yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);--/*- * Utility functions.- */--static int-yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem);--static int-yaml_emitter_need_more_events(yaml_emitter_t *emitter);--static int-yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,- yaml_tag_directive_t value, int allow_duplicates);--static int-yaml_emitter_increase_indent(yaml_emitter_t *emitter,- int flow, int indentless);--/*- * State functions.- */--static int-yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event);--static int-yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,- yaml_event_t *event);--static int-yaml_emitter_emit_document_start(yaml_emitter_t *emitter,- yaml_event_t *event, int first);--static int-yaml_emitter_emit_document_content(yaml_emitter_t *emitter,- yaml_event_t *event);--static int-yaml_emitter_emit_document_end(yaml_emitter_t *emitter,- yaml_event_t *event);--static int-yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,- yaml_event_t *event, int first);--static int-yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,- yaml_event_t *event, int first);--static int-yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,- yaml_event_t *event, int simple);--static int-yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,- yaml_event_t *event, int first);--static int-yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,- yaml_event_t *event, int first);--static int-yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,- yaml_event_t *event, int simple);--static int-yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,- int root, int sequence, int mapping, int simple_key);--static int-yaml_emitter_emit_alias(yaml_emitter_t *emitter, yaml_event_t *event);--static int-yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event);--static int-yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event);--static int-yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event);--/*- * Checkers.- */--static int-yaml_emitter_check_empty_document(yaml_emitter_t *emitter);--static int-yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter);--static int-yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter);--static int-yaml_emitter_check_simple_key(yaml_emitter_t *emitter);--static int-yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event);--/*- * Processors.- */--static int-yaml_emitter_process_anchor(yaml_emitter_t *emitter);--static int-yaml_emitter_process_tag(yaml_emitter_t *emitter);--static int-yaml_emitter_process_scalar(yaml_emitter_t *emitter);--/*- * Analyzers.- */--static int-yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,- yaml_version_directive_t version_directive);--static int-yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,- yaml_tag_directive_t tag_directive);--static int-yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,- yaml_char_t *anchor, int alias);--static int-yaml_emitter_analyze_tag(yaml_emitter_t *emitter,- yaml_char_t *tag);--static int-yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length);--static int-yaml_emitter_analyze_event(yaml_emitter_t *emitter,- yaml_event_t *event);--/*- * Writers.- */--static int-yaml_emitter_write_bom(yaml_emitter_t *emitter);--static int-yaml_emitter_write_indent(yaml_emitter_t *emitter);--static int-yaml_emitter_write_indicator(yaml_emitter_t *emitter,- const char *indicator, int need_whitespace,- int is_whitespace, int is_indention);--static int-yaml_emitter_write_anchor(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length);--static int-yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length);--static int-yaml_emitter_write_tag_content(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length, int need_whitespace);--static int-yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length, int allow_breaks);--static int-yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length, int allow_breaks);--static int-yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length, int allow_breaks);--static int-yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,- yaml_string_t string);--static int-yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length);--static int-yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length);--/*- * Set an emitter error and return 0.- */--static int-yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem)-{- emitter->error = YAML_EMITTER_ERROR;- emitter->problem = problem;-- return 0;-}--/*- * Emit an event.- */--YAML_DECLARE(int)-yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event)-{- if (!ENQUEUE(emitter, emitter->events, *event)) {- yaml_event_delete(event);- return 0;- }-- while (!yaml_emitter_need_more_events(emitter)) {- if (!yaml_emitter_analyze_event(emitter, emitter->events.head))- return 0;- if (!yaml_emitter_state_machine(emitter, emitter->events.head))- return 0;- yaml_event_delete(&DEQUEUE(emitter, emitter->events));- }-- return 1;-}--/*- * Check if we need to accumulate more events before emitting.- *- * We accumulate extra- * - 1 event for DOCUMENT-START- * - 2 events for SEQUENCE-START- * - 3 events for MAPPING-START- */--static int-yaml_emitter_need_more_events(yaml_emitter_t *emitter)-{- int level = 0;- int accumulate = 0;- yaml_event_t *event;-- if (QUEUE_EMPTY(emitter, emitter->events))- return 1;-- switch (emitter->events.head->type) {- case YAML_DOCUMENT_START_EVENT:- accumulate = 1;- break;- case YAML_SEQUENCE_START_EVENT:- accumulate = 2;- break;- case YAML_MAPPING_START_EVENT:- accumulate = 3;- break;- default:- return 0;- }-- if (emitter->events.tail - emitter->events.head > accumulate)- return 0;-- for (event = emitter->events.head; event != emitter->events.tail; event ++) {- switch (event->type) {- case YAML_STREAM_START_EVENT:- case YAML_DOCUMENT_START_EVENT:- case YAML_SEQUENCE_START_EVENT:- case YAML_MAPPING_START_EVENT:- level += 1;- break;- case YAML_STREAM_END_EVENT:- case YAML_DOCUMENT_END_EVENT:- case YAML_SEQUENCE_END_EVENT:- case YAML_MAPPING_END_EVENT:- level -= 1;- break;- default:- break;- }- if (!level)- return 0;- }-- return 1;-}--/*- * Append a directive to the directives stack.- */--static int-yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,- yaml_tag_directive_t value, int allow_duplicates)-{- yaml_tag_directive_t *tag_directive;- yaml_tag_directive_t copy = { NULL, NULL };-- for (tag_directive = emitter->tag_directives.start;- tag_directive != emitter->tag_directives.top; tag_directive ++) {- if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {- if (allow_duplicates)- return 1;- return yaml_emitter_set_emitter_error(emitter,- "duplicate %TAG directive");- }- }-- copy.handle = yaml_strdup(value.handle);- copy.prefix = yaml_strdup(value.prefix);- if (!copy.handle || !copy.prefix) {- emitter->error = YAML_MEMORY_ERROR;- goto error;- }-- if (!PUSH(emitter, emitter->tag_directives, copy))- goto error;-- return 1;--error:- yaml_free(copy.handle);- yaml_free(copy.prefix);- return 0;-}--/*- * Increase the indentation level.- */--static int-yaml_emitter_increase_indent(yaml_emitter_t *emitter,- int flow, int indentless)-{- if (!PUSH(emitter, emitter->indents, emitter->indent))- return 0;-- if (emitter->indent < 0) {- emitter->indent = flow ? emitter->best_indent : 0;- }- else if (!indentless) {- emitter->indent += emitter->best_indent;- }-- return 1;-}--/*- * State dispatcher.- */--static int-yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event)-{- switch (emitter->state)- {- case YAML_EMIT_STREAM_START_STATE:- return yaml_emitter_emit_stream_start(emitter, event);-- case YAML_EMIT_FIRST_DOCUMENT_START_STATE:- return yaml_emitter_emit_document_start(emitter, event, 1);-- case YAML_EMIT_DOCUMENT_START_STATE:- return yaml_emitter_emit_document_start(emitter, event, 0);-- case YAML_EMIT_DOCUMENT_CONTENT_STATE:- return yaml_emitter_emit_document_content(emitter, event);-- case YAML_EMIT_DOCUMENT_END_STATE:- return yaml_emitter_emit_document_end(emitter, event);-- case YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE:- return yaml_emitter_emit_flow_sequence_item(emitter, event, 1);-- case YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE:- return yaml_emitter_emit_flow_sequence_item(emitter, event, 0);-- case YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE:- return yaml_emitter_emit_flow_mapping_key(emitter, event, 1);-- case YAML_EMIT_FLOW_MAPPING_KEY_STATE:- return yaml_emitter_emit_flow_mapping_key(emitter, event, 0);-- case YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE:- return yaml_emitter_emit_flow_mapping_value(emitter, event, 1);-- case YAML_EMIT_FLOW_MAPPING_VALUE_STATE:- return yaml_emitter_emit_flow_mapping_value(emitter, event, 0);-- case YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE:- return yaml_emitter_emit_block_sequence_item(emitter, event, 1);-- case YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE:- return yaml_emitter_emit_block_sequence_item(emitter, event, 0);-- case YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE:- return yaml_emitter_emit_block_mapping_key(emitter, event, 1);-- case YAML_EMIT_BLOCK_MAPPING_KEY_STATE:- return yaml_emitter_emit_block_mapping_key(emitter, event, 0);-- case YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE:- return yaml_emitter_emit_block_mapping_value(emitter, event, 1);-- case YAML_EMIT_BLOCK_MAPPING_VALUE_STATE:- return yaml_emitter_emit_block_mapping_value(emitter, event, 0);-- case YAML_EMIT_END_STATE:- return yaml_emitter_set_emitter_error(emitter,- "expected nothing after STREAM-END");-- default:- assert(1); /* Invalid state. */- }-- return 0;-}--/*- * Expect STREAM-START.- */--static int-yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,- yaml_event_t *event)-{- emitter->open_ended = 0;- if (event->type == YAML_STREAM_START_EVENT)- {- if (!emitter->encoding) {- emitter->encoding = event->data.stream_start.encoding;- }-- if (!emitter->encoding) {- emitter->encoding = YAML_UTF8_ENCODING;- }-- if (emitter->best_indent < 2 || emitter->best_indent > 9) {- emitter->best_indent = 2;- }-- if (emitter->best_width >= 0- && emitter->best_width <= emitter->best_indent*2) {- emitter->best_width = 80;- }-- if (emitter->best_width < 0) {- emitter->best_width = INT_MAX;- }-- if (!emitter->line_break) {- emitter->line_break = YAML_LN_BREAK;- }-- emitter->indent = -1;-- emitter->line = 0;- emitter->column = 0;- emitter->whitespace = 1;- emitter->indention = 1;-- if (emitter->encoding != YAML_UTF8_ENCODING) {- if (!yaml_emitter_write_bom(emitter))- return 0;- }-- emitter->state = YAML_EMIT_FIRST_DOCUMENT_START_STATE;-- return 1;- }-- return yaml_emitter_set_emitter_error(emitter,- "expected STREAM-START");-}--/*- * Expect DOCUMENT-START or STREAM-END.- */--static int-yaml_emitter_emit_document_start(yaml_emitter_t *emitter,- yaml_event_t *event, int first)-{- if (event->type == YAML_DOCUMENT_START_EVENT)- {- yaml_tag_directive_t default_tag_directives[] = {- {(yaml_char_t *)"!", (yaml_char_t *)"!"},- {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"},- {NULL, NULL}- };- yaml_tag_directive_t *tag_directive;- int implicit;-- if (event->data.document_start.version_directive) {- if (!yaml_emitter_analyze_version_directive(emitter,- *event->data.document_start.version_directive))- return 0;- }-- for (tag_directive = event->data.document_start.tag_directives.start;- tag_directive != event->data.document_start.tag_directives.end;- tag_directive ++) {- if (!yaml_emitter_analyze_tag_directive(emitter, *tag_directive))- return 0;- if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 0))- return 0;- }-- for (tag_directive = default_tag_directives;- tag_directive->handle; tag_directive ++) {- if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 1))- return 0;- }-- implicit = event->data.document_start.implicit;- if (!first || emitter->canonical) {- implicit = 0;- }-- if ((event->data.document_start.version_directive ||- (event->data.document_start.tag_directives.start- != event->data.document_start.tag_directives.end)) &&- emitter->open_ended)- {- if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))- return 0;- if (!yaml_emitter_write_indent(emitter))- return 0;- }- emitter->open_ended = 0;-- if (event->data.document_start.version_directive) {- implicit = 0;- if (!yaml_emitter_write_indicator(emitter, "%YAML", 1, 0, 0))- return 0;- if (event->data.document_start.version_directive->minor == 1) {- if (!yaml_emitter_write_indicator(emitter, "1.1", 1, 0, 0))- return 0;- }- else {- if (!yaml_emitter_write_indicator(emitter, "1.2", 1, 0, 0))- return 0;- }- if (!yaml_emitter_write_indent(emitter))- return 0;- }-- if (event->data.document_start.tag_directives.start- != event->data.document_start.tag_directives.end) {- implicit = 0;- for (tag_directive = event->data.document_start.tag_directives.start;- tag_directive != event->data.document_start.tag_directives.end;- tag_directive ++) {- if (!yaml_emitter_write_indicator(emitter, "%TAG", 1, 0, 0))- return 0;- if (!yaml_emitter_write_tag_handle(emitter, tag_directive->handle,- strlen((char *)tag_directive->handle)))- return 0;- if (!yaml_emitter_write_tag_content(emitter, tag_directive->prefix,- strlen((char *)tag_directive->prefix), 1))- return 0;- if (!yaml_emitter_write_indent(emitter))- return 0;- }- }-- if (yaml_emitter_check_empty_document(emitter)) {- implicit = 0;- }-- if (!implicit) {- if (!yaml_emitter_write_indent(emitter))- return 0;- if (!yaml_emitter_write_indicator(emitter, "---", 1, 0, 0))- return 0;- if (emitter->canonical) {- if (!yaml_emitter_write_indent(emitter))- return 0;- }- }-- emitter->state = YAML_EMIT_DOCUMENT_CONTENT_STATE;-- emitter->open_ended = 0;- return 1;- }-- else if (event->type == YAML_STREAM_END_EVENT)- {-- /**- * This can happen if a block scalar with trailing empty lines- * is at the end of the stream- */- if (emitter->open_ended == 2)- {- if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))- return 0;- emitter->open_ended = 0;- if (!yaml_emitter_write_indent(emitter))- return 0;- }- if (!yaml_emitter_flush(emitter))- return 0;-- emitter->state = YAML_EMIT_END_STATE;-- return 1;- }-- return yaml_emitter_set_emitter_error(emitter,- "expected DOCUMENT-START or STREAM-END");-}--/*- * Expect the root node.- */--static int-yaml_emitter_emit_document_content(yaml_emitter_t *emitter,- yaml_event_t *event)-{- if (!PUSH(emitter, emitter->states, YAML_EMIT_DOCUMENT_END_STATE))- return 0;-- return yaml_emitter_emit_node(emitter, event, 1, 0, 0, 0);-}--/*- * Expect DOCUMENT-END.- */--static int-yaml_emitter_emit_document_end(yaml_emitter_t *emitter,- yaml_event_t *event)-{- if (event->type == YAML_DOCUMENT_END_EVENT)- {- if (!yaml_emitter_write_indent(emitter))- return 0;- if (!event->data.document_end.implicit) {- if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))- return 0;- emitter->open_ended = 0;- if (!yaml_emitter_write_indent(emitter))- return 0;- }- else if (!emitter->open_ended)- emitter->open_ended = 1;- if (!yaml_emitter_flush(emitter))- return 0;-- emitter->state = YAML_EMIT_DOCUMENT_START_STATE;-- while (!STACK_EMPTY(emitter, emitter->tag_directives)) {- yaml_tag_directive_t tag_directive = POP(emitter,- emitter->tag_directives);- yaml_free(tag_directive.handle);- yaml_free(tag_directive.prefix);- }-- return 1;- }-- return yaml_emitter_set_emitter_error(emitter,- "expected DOCUMENT-END");-}--/*- *- * Expect a flow item node.- */--static int-yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,- yaml_event_t *event, int first)-{- if (first)- {- if (!yaml_emitter_write_indicator(emitter, "[", 1, 1, 0))- return 0;- if (!yaml_emitter_increase_indent(emitter, 1, 0))- return 0;- emitter->flow_level ++;- }-- if (event->type == YAML_SEQUENCE_END_EVENT)- {- emitter->flow_level --;- emitter->indent = POP(emitter, emitter->indents);- if (emitter->canonical && !first) {- if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))- return 0;- if (!yaml_emitter_write_indent(emitter))- return 0;- }- if (!yaml_emitter_write_indicator(emitter, "]", 0, 0, 0))- return 0;- emitter->state = POP(emitter, emitter->states);-- return 1;- }-- if (!first) {- if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))- return 0;- }-- if (emitter->canonical || emitter->column > emitter->best_width) {- if (!yaml_emitter_write_indent(emitter))- return 0;- }- if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE))- return 0;-- return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);-}--/*- * Expect a flow key node.- */--static int-yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,- yaml_event_t *event, int first)-{- if (first)- {- if (!yaml_emitter_write_indicator(emitter, "{", 1, 1, 0))- return 0;- if (!yaml_emitter_increase_indent(emitter, 1, 0))- return 0;- emitter->flow_level ++;- }-- if (event->type == YAML_MAPPING_END_EVENT)- {- emitter->flow_level --;- emitter->indent = POP(emitter, emitter->indents);- if (emitter->canonical && !first) {- if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))- return 0;- if (!yaml_emitter_write_indent(emitter))- return 0;- }- if (!yaml_emitter_write_indicator(emitter, "}", 0, 0, 0))- return 0;- emitter->state = POP(emitter, emitter->states);-- return 1;- }-- if (!first) {- if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))- return 0;- }- if (emitter->canonical || emitter->column > emitter->best_width) {- if (!yaml_emitter_write_indent(emitter))- return 0;- }-- if (!emitter->canonical && yaml_emitter_check_simple_key(emitter))- {- if (!PUSH(emitter, emitter->states,- YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE))- return 0;-- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);- }- else- {- if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 0))- return 0;- if (!PUSH(emitter, emitter->states,- YAML_EMIT_FLOW_MAPPING_VALUE_STATE))- return 0;-- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);- }-}--/*- * Expect a flow value node.- */--static int-yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,- yaml_event_t *event, int simple)-{- if (simple) {- if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))- return 0;- }- else {- if (emitter->canonical || emitter->column > emitter->best_width) {- if (!yaml_emitter_write_indent(emitter))- return 0;- }- if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 0))- return 0;- }- if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_MAPPING_KEY_STATE))- return 0;- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);-}--/*- * Expect a block item node.- */--static int-yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,- yaml_event_t *event, int first)-{- if (first)- {- if (!yaml_emitter_increase_indent(emitter, 0,- (emitter->mapping_context && !emitter->indention)))- return 0;- }-- if (event->type == YAML_SEQUENCE_END_EVENT)- {- emitter->indent = POP(emitter, emitter->indents);- emitter->state = POP(emitter, emitter->states);-- return 1;- }-- if (!yaml_emitter_write_indent(emitter))- return 0;- if (!yaml_emitter_write_indicator(emitter, "-", 1, 0, 1))- return 0;- if (!PUSH(emitter, emitter->states,- YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE))- return 0;-- return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);-}--/*- * Expect a block key node.- */--static int-yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,- yaml_event_t *event, int first)-{- if (first)- {- if (!yaml_emitter_increase_indent(emitter, 0, 0))- return 0;- }-- if (event->type == YAML_MAPPING_END_EVENT)- {- emitter->indent = POP(emitter, emitter->indents);- emitter->state = POP(emitter, emitter->states);-- return 1;- }-- if (!yaml_emitter_write_indent(emitter))- return 0;-- if (yaml_emitter_check_simple_key(emitter))- {- if (!PUSH(emitter, emitter->states,- YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE))- return 0;-- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);- }- else- {- if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 1))- return 0;- if (!PUSH(emitter, emitter->states,- YAML_EMIT_BLOCK_MAPPING_VALUE_STATE))- return 0;-- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);- }-}--/*- * Expect a block value node.- */--static int-yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,- yaml_event_t *event, int simple)-{- if (simple) {- if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))- return 0;- }- else {- if (!yaml_emitter_write_indent(emitter))- return 0;- if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 1))- return 0;- }- if (!PUSH(emitter, emitter->states,- YAML_EMIT_BLOCK_MAPPING_KEY_STATE))- return 0;-- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);-}--/*- * Expect a node.- */--static int-yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,- int root, int sequence, int mapping, int simple_key)-{- emitter->root_context = root;- emitter->sequence_context = sequence;- emitter->mapping_context = mapping;- emitter->simple_key_context = simple_key;-- switch (event->type)- {- case YAML_ALIAS_EVENT:- return yaml_emitter_emit_alias(emitter, event);-- case YAML_SCALAR_EVENT:- return yaml_emitter_emit_scalar(emitter, event);-- case YAML_SEQUENCE_START_EVENT:- return yaml_emitter_emit_sequence_start(emitter, event);-- case YAML_MAPPING_START_EVENT:- return yaml_emitter_emit_mapping_start(emitter, event);-- default:- return yaml_emitter_set_emitter_error(emitter,- "expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS");- }-- return 0;-}--/*- * Expect ALIAS.- */--static int-yaml_emitter_emit_alias(yaml_emitter_t *emitter, SHIM(yaml_event_t *event))-{- if (!yaml_emitter_process_anchor(emitter))- return 0;- if (emitter->simple_key_context)- if (!PUT(emitter, ' ')) return 0;- emitter->state = POP(emitter, emitter->states);-- return 1;-}--/*- * Expect SCALAR.- */--static int-yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event)-{- if (!yaml_emitter_select_scalar_style(emitter, event))- return 0;- if (!yaml_emitter_process_anchor(emitter))- return 0;- if (!yaml_emitter_process_tag(emitter))- return 0;- if (!yaml_emitter_increase_indent(emitter, 1, 0))- return 0;- if (!yaml_emitter_process_scalar(emitter))- return 0;- emitter->indent = POP(emitter, emitter->indents);- emitter->state = POP(emitter, emitter->states);-- return 1;-}--/*- * Expect SEQUENCE-START.- */--static int-yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event)-{- if (!yaml_emitter_process_anchor(emitter))- return 0;- if (!yaml_emitter_process_tag(emitter))- return 0;-- if (emitter->flow_level || emitter->canonical- || event->data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE- || yaml_emitter_check_empty_sequence(emitter)) {- emitter->state = YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE;- }- else {- emitter->state = YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE;- }-- return 1;-}--/*- * Expect MAPPING-START.- */--static int-yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event)-{- if (!yaml_emitter_process_anchor(emitter))- return 0;- if (!yaml_emitter_process_tag(emitter))- return 0;-- if (emitter->flow_level || emitter->canonical- || event->data.mapping_start.style == YAML_FLOW_MAPPING_STYLE- || yaml_emitter_check_empty_mapping(emitter)) {- emitter->state = YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE;- }- else {- emitter->state = YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE;- }-- return 1;-}--/*- * Check if the document content is an empty scalar.- */--static int-yaml_emitter_check_empty_document(SHIM(yaml_emitter_t *emitter))-{- return 0;-}--/*- * Check if the next events represent an empty sequence.- */--static int-yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter)-{- if (emitter->events.tail - emitter->events.head < 2)- return 0;-- return (emitter->events.head[0].type == YAML_SEQUENCE_START_EVENT- && emitter->events.head[1].type == YAML_SEQUENCE_END_EVENT);-}--/*- * Check if the next events represent an empty mapping.- */--static int-yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter)-{- if (emitter->events.tail - emitter->events.head < 2)- return 0;-- return (emitter->events.head[0].type == YAML_MAPPING_START_EVENT- && emitter->events.head[1].type == YAML_MAPPING_END_EVENT);-}--/*- * Check if the next node can be expressed as a simple key.- */--static int-yaml_emitter_check_simple_key(yaml_emitter_t *emitter)-{- yaml_event_t *event = emitter->events.head;- size_t length = 0;-- switch (event->type)- {- case YAML_ALIAS_EVENT:- length += emitter->anchor_data.anchor_length;- break;-- case YAML_SCALAR_EVENT:- if (emitter->scalar_data.multiline)- return 0;- length += emitter->anchor_data.anchor_length- + emitter->tag_data.handle_length- + emitter->tag_data.suffix_length- + emitter->scalar_data.length;- break;-- case YAML_SEQUENCE_START_EVENT:- if (!yaml_emitter_check_empty_sequence(emitter))- return 0;- length += emitter->anchor_data.anchor_length- + emitter->tag_data.handle_length- + emitter->tag_data.suffix_length;- break;-- case YAML_MAPPING_START_EVENT:- if (!yaml_emitter_check_empty_mapping(emitter))- return 0;- length += emitter->anchor_data.anchor_length- + emitter->tag_data.handle_length- + emitter->tag_data.suffix_length;- break;-- default:- return 0;- }-- if (length > 128)- return 0;-- return 1;-}--/*- * Determine an acceptable scalar style.- */--static int-yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event)-{- yaml_scalar_style_t style = event->data.scalar.style;- int no_tag = (!emitter->tag_data.handle && !emitter->tag_data.suffix);-- if (no_tag && !event->data.scalar.plain_implicit- && !event->data.scalar.quoted_implicit) {- return yaml_emitter_set_emitter_error(emitter,- "neither tag nor implicit flags are specified");- }-- if (style == YAML_ANY_SCALAR_STYLE)- style = YAML_PLAIN_SCALAR_STYLE;-- if (emitter->canonical)- style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;-- if (emitter->simple_key_context && emitter->scalar_data.multiline)- style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;-- if (style == YAML_PLAIN_SCALAR_STYLE)- {- if ((emitter->flow_level && !emitter->scalar_data.flow_plain_allowed)- || (!emitter->flow_level && !emitter->scalar_data.block_plain_allowed))- style = YAML_SINGLE_QUOTED_SCALAR_STYLE;- if (!emitter->scalar_data.length- && (emitter->flow_level || emitter->simple_key_context))- style = YAML_SINGLE_QUOTED_SCALAR_STYLE;- if (no_tag && !event->data.scalar.plain_implicit)- style = YAML_SINGLE_QUOTED_SCALAR_STYLE;- }-- if (style == YAML_SINGLE_QUOTED_SCALAR_STYLE)- {- if (!emitter->scalar_data.single_quoted_allowed)- style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;- }-- if (style == YAML_LITERAL_SCALAR_STYLE || style == YAML_FOLDED_SCALAR_STYLE)- {- if (!emitter->scalar_data.block_allowed- || emitter->flow_level || emitter->simple_key_context)- style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;- }-- if (no_tag && !event->data.scalar.quoted_implicit- && style != YAML_PLAIN_SCALAR_STYLE)- {- emitter->tag_data.handle = (yaml_char_t *)"!";- emitter->tag_data.handle_length = 1;- }-- emitter->scalar_data.style = style;-- return 1;-}--/*- * Write an anchor.- */--static int-yaml_emitter_process_anchor(yaml_emitter_t *emitter)-{- if (!emitter->anchor_data.anchor)- return 1;-- if (!yaml_emitter_write_indicator(emitter,- (emitter->anchor_data.alias ? "*" : "&"), 1, 0, 0))- return 0;-- return yaml_emitter_write_anchor(emitter,- emitter->anchor_data.anchor, emitter->anchor_data.anchor_length);-}--/*- * Write a tag.- */--static int-yaml_emitter_process_tag(yaml_emitter_t *emitter)-{- if (!emitter->tag_data.handle && !emitter->tag_data.suffix)- return 1;-- if (emitter->tag_data.handle)- {- if (!yaml_emitter_write_tag_handle(emitter, emitter->tag_data.handle,- emitter->tag_data.handle_length))- return 0;- if (emitter->tag_data.suffix) {- if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,- emitter->tag_data.suffix_length, 0))- return 0;- }- }- else- {- if (!yaml_emitter_write_indicator(emitter, "!<", 1, 0, 0))- return 0;- if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,- emitter->tag_data.suffix_length, 0))- return 0;- if (!yaml_emitter_write_indicator(emitter, ">", 0, 0, 0))- return 0;- }-- return 1;-}--/*- * Write a scalar.- */--static int-yaml_emitter_process_scalar(yaml_emitter_t *emitter)-{- switch (emitter->scalar_data.style)- {- case YAML_PLAIN_SCALAR_STYLE:- return yaml_emitter_write_plain_scalar(emitter,- emitter->scalar_data.value, emitter->scalar_data.length,- !emitter->simple_key_context);-- case YAML_SINGLE_QUOTED_SCALAR_STYLE:- return yaml_emitter_write_single_quoted_scalar(emitter,- emitter->scalar_data.value, emitter->scalar_data.length,- !emitter->simple_key_context);-- case YAML_DOUBLE_QUOTED_SCALAR_STYLE:- return yaml_emitter_write_double_quoted_scalar(emitter,- emitter->scalar_data.value, emitter->scalar_data.length,- !emitter->simple_key_context);-- case YAML_LITERAL_SCALAR_STYLE:- return yaml_emitter_write_literal_scalar(emitter,- emitter->scalar_data.value, emitter->scalar_data.length);-- case YAML_FOLDED_SCALAR_STYLE:- return yaml_emitter_write_folded_scalar(emitter,- emitter->scalar_data.value, emitter->scalar_data.length);-- default:- assert(1); /* Impossible. */- }-- return 0;-}--/*- * Check if a %YAML directive is valid.- */--static int-yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,- yaml_version_directive_t version_directive)-{- if (version_directive.major != 1 || (- version_directive.minor != 1- && version_directive.minor != 2- )) {- return yaml_emitter_set_emitter_error(emitter,- "incompatible %YAML directive");- }-- return 1;-}--/*- * Check if a %TAG directive is valid.- */--static int-yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,- yaml_tag_directive_t tag_directive)-{- yaml_string_t handle;- yaml_string_t prefix;- size_t handle_length;- size_t prefix_length;-- handle_length = strlen((char *)tag_directive.handle);- prefix_length = strlen((char *)tag_directive.prefix);- STRING_ASSIGN(handle, tag_directive.handle, handle_length);- STRING_ASSIGN(prefix, tag_directive.prefix, prefix_length);-- if (handle.start == handle.end) {- return yaml_emitter_set_emitter_error(emitter,- "tag handle must not be empty");- }-- if (handle.start[0] != '!') {- return yaml_emitter_set_emitter_error(emitter,- "tag handle must start with '!'");- }-- if (handle.end[-1] != '!') {- return yaml_emitter_set_emitter_error(emitter,- "tag handle must end with '!'");- }-- handle.pointer ++;-- while (handle.pointer < handle.end-1) {- if (!IS_ALPHA(handle)) {- return yaml_emitter_set_emitter_error(emitter,- "tag handle must contain alphanumerical characters only");- }- MOVE(handle);- }-- if (prefix.start == prefix.end) {- return yaml_emitter_set_emitter_error(emitter,- "tag prefix must not be empty");- }-- return 1;-}--/*- * Check if an anchor is valid.- */--static int-yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,- yaml_char_t *anchor, int alias)-{- size_t anchor_length;- yaml_string_t string;-- anchor_length = strlen((char *)anchor);- STRING_ASSIGN(string, anchor, anchor_length);-- if (string.start == string.end) {- return yaml_emitter_set_emitter_error(emitter, alias ?- "alias value must not be empty" :- "anchor value must not be empty");- }-- while (string.pointer != string.end) {- if (!IS_ALPHA(string)) {- return yaml_emitter_set_emitter_error(emitter, alias ?- "alias value must contain alphanumerical characters only" :- "anchor value must contain alphanumerical characters only");- }- MOVE(string);- }-- emitter->anchor_data.anchor = string.start;- emitter->anchor_data.anchor_length = string.end - string.start;- emitter->anchor_data.alias = alias;-- return 1;-}--/*- * Check if a tag is valid.- */--static int-yaml_emitter_analyze_tag(yaml_emitter_t *emitter,- yaml_char_t *tag)-{- size_t tag_length;- yaml_string_t string;- yaml_tag_directive_t *tag_directive;-- tag_length = strlen((char *)tag);- STRING_ASSIGN(string, tag, tag_length);-- if (string.start == string.end) {- return yaml_emitter_set_emitter_error(emitter,- "tag value must not be empty");- }-- for (tag_directive = emitter->tag_directives.start;- tag_directive != emitter->tag_directives.top; tag_directive ++) {- size_t prefix_length = strlen((char *)tag_directive->prefix);- if (prefix_length < (size_t)(string.end - string.start)- && strncmp((char *)tag_directive->prefix, (char *)string.start,- prefix_length) == 0)- {- emitter->tag_data.handle = tag_directive->handle;- emitter->tag_data.handle_length =- strlen((char *)tag_directive->handle);- emitter->tag_data.suffix = string.start + prefix_length;- emitter->tag_data.suffix_length =- (string.end - string.start) - prefix_length;- return 1;- }- }-- emitter->tag_data.suffix = string.start;- emitter->tag_data.suffix_length = string.end - string.start;-- return 1;-}--/*- * Check if a scalar is valid.- */--static int-yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length)-{- yaml_string_t string;-- int block_indicators = 0;- int flow_indicators = 0;- int line_breaks = 0;- int special_characters = 0;-- int leading_space = 0;- int leading_break = 0;- int trailing_space = 0;- int trailing_break = 0;- int break_space = 0;- int space_break = 0;-- int preceded_by_whitespace = 0;- int followed_by_whitespace = 0;- int previous_space = 0;- int previous_break = 0;-- STRING_ASSIGN(string, value, length);-- emitter->scalar_data.value = value;- emitter->scalar_data.length = length;-- if (string.start == string.end)- {- emitter->scalar_data.multiline = 0;- emitter->scalar_data.flow_plain_allowed = 0;- emitter->scalar_data.block_plain_allowed = 1;- emitter->scalar_data.single_quoted_allowed = 1;- emitter->scalar_data.block_allowed = 0;-- return 1;- }-- if ((CHECK_AT(string, '-', 0)- && CHECK_AT(string, '-', 1)- && CHECK_AT(string, '-', 2))- || (CHECK_AT(string, '.', 0)- && CHECK_AT(string, '.', 1)- && CHECK_AT(string, '.', 2))) {- block_indicators = 1;- flow_indicators = 1;- }-- preceded_by_whitespace = 1;- followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));-- while (string.pointer != string.end)- {- if (string.start == string.pointer)- {- if (CHECK(string, '#') || CHECK(string, ',')- || CHECK(string, '[') || CHECK(string, ']')- || CHECK(string, '{') || CHECK(string, '}')- || CHECK(string, '&') || CHECK(string, '*')- || CHECK(string, '!') || CHECK(string, '|')- || CHECK(string, '>') || CHECK(string, '\'')- || CHECK(string, '"') || CHECK(string, '%')- || CHECK(string, '@') || CHECK(string, '`')) {- flow_indicators = 1;- block_indicators = 1;- }-- if (CHECK(string, '?') || CHECK(string, ':')) {- flow_indicators = 1;- if (followed_by_whitespace) {- block_indicators = 1;- }- }-- if (CHECK(string, '-') && followed_by_whitespace) {- flow_indicators = 1;- block_indicators = 1;- }- }- else- {- if (CHECK(string, ',') || CHECK(string, '?')- || CHECK(string, '[') || CHECK(string, ']')- || CHECK(string, '{') || CHECK(string, '}')) {- flow_indicators = 1;- }-- if (CHECK(string, ':')) {- flow_indicators = 1;- if (followed_by_whitespace) {- block_indicators = 1;- }- }-- if (CHECK(string, '#') && preceded_by_whitespace) {- flow_indicators = 1;- block_indicators = 1;- }- }-- if (!IS_PRINTABLE(string)- || (!IS_ASCII(string) && !emitter->unicode)) {- special_characters = 1;- }-- if (IS_BREAK(string)) {- line_breaks = 1;- }-- if (IS_SPACE(string))- {- if (string.start == string.pointer) {- leading_space = 1;- }- if (string.pointer+WIDTH(string) == string.end) {- trailing_space = 1;- }- if (previous_break) {- break_space = 1;- }- previous_space = 1;- previous_break = 0;- }- else if (IS_BREAK(string))- {- if (string.start == string.pointer) {- leading_break = 1;- }- if (string.pointer+WIDTH(string) == string.end) {- trailing_break = 1;- }- if (previous_space) {- space_break = 1;- }- previous_space = 0;- previous_break = 1;- }- else- {- previous_space = 0;- previous_break = 0;- }-- preceded_by_whitespace = IS_BLANKZ(string);- MOVE(string);- if (string.pointer != string.end) {- followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));- }- }-- emitter->scalar_data.multiline = line_breaks;-- emitter->scalar_data.flow_plain_allowed = 1;- emitter->scalar_data.block_plain_allowed = 1;- emitter->scalar_data.single_quoted_allowed = 1;- emitter->scalar_data.block_allowed = 1;-- if (leading_space || leading_break || trailing_space || trailing_break) {- emitter->scalar_data.flow_plain_allowed = 0;- emitter->scalar_data.block_plain_allowed = 0;- }-- if (trailing_space) {- emitter->scalar_data.block_allowed = 0;- }-- if (break_space) {- emitter->scalar_data.flow_plain_allowed = 0;- emitter->scalar_data.block_plain_allowed = 0;- emitter->scalar_data.single_quoted_allowed = 0;- }-- if (space_break || special_characters) {- emitter->scalar_data.flow_plain_allowed = 0;- emitter->scalar_data.block_plain_allowed = 0;- emitter->scalar_data.single_quoted_allowed = 0;- emitter->scalar_data.block_allowed = 0;- }-- if (line_breaks) {- emitter->scalar_data.flow_plain_allowed = 0;- emitter->scalar_data.block_plain_allowed = 0;- }-- if (flow_indicators) {- emitter->scalar_data.flow_plain_allowed = 0;- }-- if (block_indicators) {- emitter->scalar_data.block_plain_allowed = 0;- }-- return 1;-}--/*- * Check if the event data is valid.- */--static int-yaml_emitter_analyze_event(yaml_emitter_t *emitter,- yaml_event_t *event)-{- emitter->anchor_data.anchor = NULL;- emitter->anchor_data.anchor_length = 0;- emitter->tag_data.handle = NULL;- emitter->tag_data.handle_length = 0;- emitter->tag_data.suffix = NULL;- emitter->tag_data.suffix_length = 0;- emitter->scalar_data.value = NULL;- emitter->scalar_data.length = 0;-- switch (event->type)- {- case YAML_ALIAS_EVENT:- if (!yaml_emitter_analyze_anchor(emitter,- event->data.alias.anchor, 1))- return 0;- return 1;-- case YAML_SCALAR_EVENT:- if (event->data.scalar.anchor) {- if (!yaml_emitter_analyze_anchor(emitter,- event->data.scalar.anchor, 0))- return 0;- }- if (event->data.scalar.tag && (emitter->canonical ||- (!event->data.scalar.plain_implicit- && !event->data.scalar.quoted_implicit))) {- if (!yaml_emitter_analyze_tag(emitter, event->data.scalar.tag))- return 0;- }- if (!yaml_emitter_analyze_scalar(emitter,- event->data.scalar.value, event->data.scalar.length))- return 0;- return 1;-- case YAML_SEQUENCE_START_EVENT:- if (event->data.sequence_start.anchor) {- if (!yaml_emitter_analyze_anchor(emitter,- event->data.sequence_start.anchor, 0))- return 0;- }- if (event->data.sequence_start.tag && (emitter->canonical ||- !event->data.sequence_start.implicit)) {- if (!yaml_emitter_analyze_tag(emitter,- event->data.sequence_start.tag))- return 0;- }- return 1;-- case YAML_MAPPING_START_EVENT:- if (event->data.mapping_start.anchor) {- if (!yaml_emitter_analyze_anchor(emitter,- event->data.mapping_start.anchor, 0))- return 0;- }- if (event->data.mapping_start.tag && (emitter->canonical ||- !event->data.mapping_start.implicit)) {- if (!yaml_emitter_analyze_tag(emitter,- event->data.mapping_start.tag))- return 0;- }- return 1;-- default:- return 1;- }-}--/*- * Write the BOM character.- */--static int-yaml_emitter_write_bom(yaml_emitter_t *emitter)-{- if (!FLUSH(emitter)) return 0;-- *(emitter->buffer.pointer++) = (yaml_char_t) '\xEF';- *(emitter->buffer.pointer++) = (yaml_char_t) '\xBB';- *(emitter->buffer.pointer++) = (yaml_char_t) '\xBF';-- return 1;-}--static int-yaml_emitter_write_indent(yaml_emitter_t *emitter)-{- int indent = (emitter->indent >= 0) ? emitter->indent : 0;-- if (!emitter->indention || emitter->column > indent- || (emitter->column == indent && !emitter->whitespace)) {- if (!PUT_BREAK(emitter)) return 0;- }-- while (emitter->column < indent) {- if (!PUT(emitter, ' ')) return 0;- }-- emitter->whitespace = 1;- emitter->indention = 1;-- return 1;-}--static int-yaml_emitter_write_indicator(yaml_emitter_t *emitter,- const char *indicator, int need_whitespace,- int is_whitespace, int is_indention)-{- size_t indicator_length;- yaml_string_t string;-- indicator_length = strlen(indicator);- STRING_ASSIGN(string, (yaml_char_t *)indicator, indicator_length);-- if (need_whitespace && !emitter->whitespace) {- if (!PUT(emitter, ' ')) return 0;- }-- while (string.pointer != string.end) {- if (!WRITE(emitter, string)) return 0;- }-- emitter->whitespace = is_whitespace;- emitter->indention = (emitter->indention && is_indention);-- return 1;-}--static int-yaml_emitter_write_anchor(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length)-{- yaml_string_t string;- STRING_ASSIGN(string, value, length);-- while (string.pointer != string.end) {- if (!WRITE(emitter, string)) return 0;- }-- emitter->whitespace = 0;- emitter->indention = 0;-- return 1;-}--static int-yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length)-{- yaml_string_t string;- STRING_ASSIGN(string, value, length);-- if (!emitter->whitespace) {- if (!PUT(emitter, ' ')) return 0;- }-- while (string.pointer != string.end) {- if (!WRITE(emitter, string)) return 0;- }-- emitter->whitespace = 0;- emitter->indention = 0;-- return 1;-}--static int-yaml_emitter_write_tag_content(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length,- int need_whitespace)-{- yaml_string_t string;- STRING_ASSIGN(string, value, length);-- if (need_whitespace && !emitter->whitespace) {- if (!PUT(emitter, ' ')) return 0;- }-- while (string.pointer != string.end) {- if (IS_ALPHA(string)- || CHECK(string, ';') || CHECK(string, '/')- || CHECK(string, '?') || CHECK(string, ':')- || CHECK(string, '@') || CHECK(string, '&')- || CHECK(string, '=') || CHECK(string, '+')- || CHECK(string, '$') || CHECK(string, ',')- || CHECK(string, '_') || CHECK(string, '.')- || CHECK(string, '~') || CHECK(string, '*')- || CHECK(string, '\'') || CHECK(string, '(')- || CHECK(string, ')') || CHECK(string, '[')- || CHECK(string, ']')) {- if (!WRITE(emitter, string)) return 0;- }- else {- int width = WIDTH(string);- unsigned int value;- while (width --) {- value = *(string.pointer++);- if (!PUT(emitter, '%')) return 0;- if (!PUT(emitter, (value >> 4)- + ((value >> 4) < 10 ? '0' : 'A' - 10)))- return 0;- if (!PUT(emitter, (value & 0x0F)- + ((value & 0x0F) < 10 ? '0' : 'A' - 10)))- return 0;- }- }- }-- emitter->whitespace = 0;- emitter->indention = 0;-- return 1;-}--static int-yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length, int allow_breaks)-{- yaml_string_t string;- int spaces = 0;- int breaks = 0;-- STRING_ASSIGN(string, value, length);-- /**- * Avoid trailing spaces for empty values in block mode.- * In flow mode, we still want the space to prevent ambiguous things- * like {a:}.- * Currently, the emitter forbids any plain empty scalar in flow mode- * (e.g. it outputs {a: ''} instead), so emitter->flow_level will- * never be true here.- * But if the emitter is ever changed to allow emitting empty values,- * the check for flow_level is already here.- */- if (!emitter->whitespace && (length || emitter->flow_level)) {- if (!PUT(emitter, ' ')) return 0;- }-- while (string.pointer != string.end)- {- if (IS_SPACE(string))- {- if (allow_breaks && !spaces- && emitter->column > emitter->best_width- && !IS_SPACE_AT(string, 1)) {- if (!yaml_emitter_write_indent(emitter)) return 0;- MOVE(string);- }- else {- if (!WRITE(emitter, string)) return 0;- }- spaces = 1;- }- else if (IS_BREAK(string))- {- if (!breaks && CHECK(string, '\n')) {- if (!PUT_BREAK(emitter)) return 0;- }- if (!WRITE_BREAK(emitter, string)) return 0;- emitter->indention = 1;- breaks = 1;- }- else- {- if (breaks) {- if (!yaml_emitter_write_indent(emitter)) return 0;- }- if (!WRITE(emitter, string)) return 0;- emitter->indention = 0;- spaces = 0;- breaks = 0;- }- }-- emitter->whitespace = 0;- emitter->indention = 0;-- return 1;-}--static int-yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length, int allow_breaks)-{- yaml_string_t string;- int spaces = 0;- int breaks = 0;-- STRING_ASSIGN(string, value, length);-- if (!yaml_emitter_write_indicator(emitter, "'", 1, 0, 0))- return 0;-- while (string.pointer != string.end)- {- if (IS_SPACE(string))- {- if (allow_breaks && !spaces- && emitter->column > emitter->best_width- && string.pointer != string.start- && string.pointer != string.end - 1- && !IS_SPACE_AT(string, 1)) {- if (!yaml_emitter_write_indent(emitter)) return 0;- MOVE(string);- }- else {- if (!WRITE(emitter, string)) return 0;- }- spaces = 1;- }- else if (IS_BREAK(string))- {- if (!breaks && CHECK(string, '\n')) {- if (!PUT_BREAK(emitter)) return 0;- }- if (!WRITE_BREAK(emitter, string)) return 0;- emitter->indention = 1;- breaks = 1;- }- else- {- if (breaks) {- if (!yaml_emitter_write_indent(emitter)) return 0;- }- if (CHECK(string, '\'')) {- if (!PUT(emitter, '\'')) return 0;- }- if (!WRITE(emitter, string)) return 0;- emitter->indention = 0;- spaces = 0;- breaks = 0;- }- }-- if (breaks)- if (!yaml_emitter_write_indent(emitter)) return 0;-- if (!yaml_emitter_write_indicator(emitter, "'", 0, 0, 0))- return 0;-- emitter->whitespace = 0;- emitter->indention = 0;-- return 1;-}--static int-yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length, int allow_breaks)-{- yaml_string_t string;- int spaces = 0;-- STRING_ASSIGN(string, value, length);-- if (!yaml_emitter_write_indicator(emitter, "\"", 1, 0, 0))- return 0;-- while (string.pointer != string.end)- {- if (!IS_PRINTABLE(string) || (!emitter->unicode && !IS_ASCII(string))- || IS_BOM(string) || IS_BREAK(string)- || CHECK(string, '"') || CHECK(string, '\\'))- {- unsigned char octet;- unsigned int width;- unsigned int value;- int k;-- octet = string.pointer[0];- width = (octet & 0x80) == 0x00 ? 1 :- (octet & 0xE0) == 0xC0 ? 2 :- (octet & 0xF0) == 0xE0 ? 3 :- (octet & 0xF8) == 0xF0 ? 4 : 0;- value = (octet & 0x80) == 0x00 ? octet & 0x7F :- (octet & 0xE0) == 0xC0 ? octet & 0x1F :- (octet & 0xF0) == 0xE0 ? octet & 0x0F :- (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;- for (k = 1; k < (int)width; k ++) {- octet = string.pointer[k];- value = (value << 6) + (octet & 0x3F);- }- string.pointer += width;-- if (!PUT(emitter, '\\')) return 0;-- switch (value)- {- case 0x00:- if (!PUT(emitter, '0')) return 0;- break;-- case 0x07:- if (!PUT(emitter, 'a')) return 0;- break;-- case 0x08:- if (!PUT(emitter, 'b')) return 0;- break;-- case 0x09:- if (!PUT(emitter, 't')) return 0;- break;-- case 0x0A:- if (!PUT(emitter, 'n')) return 0;- break;-- case 0x0B:- if (!PUT(emitter, 'v')) return 0;- break;-- case 0x0C:- if (!PUT(emitter, 'f')) return 0;- break;-- case 0x0D:- if (!PUT(emitter, 'r')) return 0;- break;-- case 0x1B:- if (!PUT(emitter, 'e')) return 0;- break;-- case 0x22:- if (!PUT(emitter, '\"')) return 0;- break;-- case 0x5C:- if (!PUT(emitter, '\\')) return 0;- break;-- case 0x85:- if (!PUT(emitter, 'N')) return 0;- break;-- case 0xA0:- if (!PUT(emitter, '_')) return 0;- break;-- case 0x2028:- if (!PUT(emitter, 'L')) return 0;- break;-- case 0x2029:- if (!PUT(emitter, 'P')) return 0;- break;-- default:- if (value <= 0xFF) {- if (!PUT(emitter, 'x')) return 0;- width = 2;- }- else if (value <= 0xFFFF) {- if (!PUT(emitter, 'u')) return 0;- width = 4;- }- else {- if (!PUT(emitter, 'U')) return 0;- width = 8;- }- for (k = (width-1)*4; k >= 0; k -= 4) {- int digit = (value >> k) & 0x0F;- if (!PUT(emitter, digit + (digit < 10 ? '0' : 'A'-10)))- return 0;- }- }- spaces = 0;- }- else if (IS_SPACE(string))- {- if (allow_breaks && !spaces- && emitter->column > emitter->best_width- && string.pointer != string.start- && string.pointer != string.end - 1) {- if (!yaml_emitter_write_indent(emitter)) return 0;- if (IS_SPACE_AT(string, 1)) {- if (!PUT(emitter, '\\')) return 0;- }- MOVE(string);- }- else {- if (!WRITE(emitter, string)) return 0;- }- spaces = 1;- }- else- {- if (!WRITE(emitter, string)) return 0;- spaces = 0;- }- }-- if (!yaml_emitter_write_indicator(emitter, "\"", 0, 0, 0))- return 0;-- emitter->whitespace = 0;- emitter->indention = 0;-- return 1;-}--static int-yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,- yaml_string_t string)-{- char indent_hint[2];- const char *chomp_hint = NULL;-- if (IS_SPACE(string) || IS_BREAK(string))- {- indent_hint[0] = '0' + (char)emitter->best_indent;- indent_hint[1] = '\0';- if (!yaml_emitter_write_indicator(emitter, indent_hint, 0, 0, 0))- return 0;- }-- emitter->open_ended = 0;-- string.pointer = string.end;- if (string.start == string.pointer)- {- chomp_hint = "-";- }- else- {- do {- string.pointer --;- } while ((*string.pointer & 0xC0) == 0x80);- if (!IS_BREAK(string))- {- chomp_hint = "-";- }- else if (string.start == string.pointer)- {- chomp_hint = "+";- emitter->open_ended = 2;- }- else- {- do {- string.pointer --;- } while ((*string.pointer & 0xC0) == 0x80);- if (IS_BREAK(string))- {- chomp_hint = "+";- emitter->open_ended = 2;- }- }- }-- if (chomp_hint)- {- if (!yaml_emitter_write_indicator(emitter, chomp_hint, 0, 0, 0))- return 0;- }-- return 1;-}--static int-yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length)-{- yaml_string_t string;- int breaks = 1;-- STRING_ASSIGN(string, value, length);-- if (!yaml_emitter_write_indicator(emitter, "|", 1, 0, 0))- return 0;- if (!yaml_emitter_write_block_scalar_hints(emitter, string))- return 0;- if (!PUT_BREAK(emitter)) return 0;- emitter->indention = 1;- emitter->whitespace = 1;-- while (string.pointer != string.end)- {- if (IS_BREAK(string))- {- if (!WRITE_BREAK(emitter, string)) return 0;- emitter->indention = 1;- breaks = 1;- }- else- {- if (breaks) {- if (!yaml_emitter_write_indent(emitter)) return 0;- }- if (!WRITE(emitter, string)) return 0;- emitter->indention = 0;- breaks = 0;- }- }-- return 1;-}--static int-yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,- yaml_char_t *value, size_t length)-{- yaml_string_t string;- int breaks = 1;- int leading_spaces = 1;-- STRING_ASSIGN(string, value, length);-- if (!yaml_emitter_write_indicator(emitter, ">", 1, 0, 0))- return 0;- if (!yaml_emitter_write_block_scalar_hints(emitter, string))- return 0;- if (!PUT_BREAK(emitter)) return 0;- emitter->indention = 1;- emitter->whitespace = 1;-- while (string.pointer != string.end)- {- if (IS_BREAK(string))- {- if (!breaks && !leading_spaces && CHECK(string, '\n')) {- int k = 0;- while (IS_BREAK_AT(string, k)) {- k += WIDTH_AT(string, k);- }- if (!IS_BLANKZ_AT(string, k)) {- if (!PUT_BREAK(emitter)) return 0;- }- }- if (!WRITE_BREAK(emitter, string)) return 0;- emitter->indention = 1;- breaks = 1;- }- else- {- if (breaks) {- if (!yaml_emitter_write_indent(emitter)) return 0;- leading_spaces = IS_BLANK(string);- }- if (!breaks && IS_SPACE(string) && !IS_SPACE_AT(string, 1)- && emitter->column > emitter->best_width) {- if (!yaml_emitter_write_indent(emitter)) return 0;- MOVE(string);- }- else {- if (!WRITE(emitter, string)) return 0;- }- emitter->indention = 0;- breaks = 0;- }- }-- return 1;-}
− libyaml_src/loader.c
@@ -1,544 +0,0 @@--#include "yaml_private.h"--/*- * API functions.- */--YAML_DECLARE(int)-yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document);--/*- * Error handling.- */--static int-yaml_parser_set_composer_error(yaml_parser_t *parser,- const char *problem, yaml_mark_t problem_mark);--static int-yaml_parser_set_composer_error_context(yaml_parser_t *parser,- const char *context, yaml_mark_t context_mark,- const char *problem, yaml_mark_t problem_mark);---/*- * Alias handling.- */--static int-yaml_parser_register_anchor(yaml_parser_t *parser,- int index, yaml_char_t *anchor);--/*- * Clean up functions.- */--static void-yaml_parser_delete_aliases(yaml_parser_t *parser);--/*- * Document loading context.- */-struct loader_ctx {- int *start;- int *end;- int *top;-};--/*- * Composer functions.- */-static int-yaml_parser_load_nodes(yaml_parser_t *parser, struct loader_ctx *ctx);--static int-yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *event);--static int-yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx);--static int-yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx);--static int-yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx);--static int-yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx);--static int-yaml_parser_load_sequence_end(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx);--static int-yaml_parser_load_mapping_end(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx);--/*- * Load the next document of the stream.- */--YAML_DECLARE(int)-yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document)-{- yaml_event_t event;-- assert(parser); /* Non-NULL parser object is expected. */- assert(document); /* Non-NULL document object is expected. */-- memset(document, 0, sizeof(yaml_document_t));- if (!STACK_INIT(parser, document->nodes, yaml_node_t*))- goto error;-- if (!parser->stream_start_produced) {- if (!yaml_parser_parse(parser, &event)) goto error;- assert(event.type == YAML_STREAM_START_EVENT);- /* STREAM-START is expected. */- }-- if (parser->stream_end_produced) {- return 1;- }-- if (!yaml_parser_parse(parser, &event)) goto error;- if (event.type == YAML_STREAM_END_EVENT) {- return 1;- }-- if (!STACK_INIT(parser, parser->aliases, yaml_alias_data_t*))- goto error;-- parser->document = document;-- if (!yaml_parser_load_document(parser, &event)) goto error;-- yaml_parser_delete_aliases(parser);- parser->document = NULL;-- return 1;--error:-- yaml_parser_delete_aliases(parser);- yaml_document_delete(document);- parser->document = NULL;-- return 0;-}--/*- * Set composer error.- */--static int-yaml_parser_set_composer_error(yaml_parser_t *parser,- const char *problem, yaml_mark_t problem_mark)-{- parser->error = YAML_COMPOSER_ERROR;- parser->problem = problem;- parser->problem_mark = problem_mark;-- return 0;-}--/*- * Set composer error with context.- */--static int-yaml_parser_set_composer_error_context(yaml_parser_t *parser,- const char *context, yaml_mark_t context_mark,- const char *problem, yaml_mark_t problem_mark)-{- parser->error = YAML_COMPOSER_ERROR;- parser->context = context;- parser->context_mark = context_mark;- parser->problem = problem;- parser->problem_mark = problem_mark;-- return 0;-}--/*- * Delete the stack of aliases.- */--static void-yaml_parser_delete_aliases(yaml_parser_t *parser)-{- while (!STACK_EMPTY(parser, parser->aliases)) {- yaml_free(POP(parser, parser->aliases).anchor);- }- STACK_DEL(parser, parser->aliases);-}--/*- * Compose a document object.- */--static int-yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *event)-{- struct loader_ctx ctx = { NULL, NULL, NULL };-- assert(event->type == YAML_DOCUMENT_START_EVENT);- /* DOCUMENT-START is expected. */-- parser->document->version_directive- = event->data.document_start.version_directive;- parser->document->tag_directives.start- = event->data.document_start.tag_directives.start;- parser->document->tag_directives.end- = event->data.document_start.tag_directives.end;- parser->document->start_implicit- = event->data.document_start.implicit;- parser->document->start_mark = event->start_mark;-- if (!STACK_INIT(parser, ctx, int*)) return 0;- if (!yaml_parser_load_nodes(parser, &ctx)) {- STACK_DEL(parser, ctx);- return 0;- }- STACK_DEL(parser, ctx);-- return 1;-}--/*- * Compose a node tree.- */--static int-yaml_parser_load_nodes(yaml_parser_t *parser, struct loader_ctx *ctx)-{- yaml_event_t event;-- do {- if (!yaml_parser_parse(parser, &event)) return 0;-- switch (event.type) {- case YAML_ALIAS_EVENT:- if (!yaml_parser_load_alias(parser, &event, ctx)) return 0;- break;- case YAML_SCALAR_EVENT:- if (!yaml_parser_load_scalar(parser, &event, ctx)) return 0;- break;- case YAML_SEQUENCE_START_EVENT:- if (!yaml_parser_load_sequence(parser, &event, ctx)) return 0;- break;- case YAML_SEQUENCE_END_EVENT:- if (!yaml_parser_load_sequence_end(parser, &event, ctx))- return 0;- break;- case YAML_MAPPING_START_EVENT:- if (!yaml_parser_load_mapping(parser, &event, ctx)) return 0;- break;- case YAML_MAPPING_END_EVENT:- if (!yaml_parser_load_mapping_end(parser, &event, ctx))- return 0;- break;- default:- assert(0); /* Could not happen. */- return 0;- case YAML_DOCUMENT_END_EVENT:- break;- }- } while (event.type != YAML_DOCUMENT_END_EVENT);-- parser->document->end_implicit = event.data.document_end.implicit;- parser->document->end_mark = event.end_mark;-- return 1;-}--/*- * Add an anchor.- */--static int-yaml_parser_register_anchor(yaml_parser_t *parser,- int index, yaml_char_t *anchor)-{- yaml_alias_data_t data;- yaml_alias_data_t *alias_data;-- if (!anchor) return 1;-- data.anchor = anchor;- data.index = index;- data.mark = parser->document->nodes.start[index-1].start_mark;-- for (alias_data = parser->aliases.start;- alias_data != parser->aliases.top; alias_data ++) {- if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) {- yaml_free(anchor);- return yaml_parser_set_composer_error_context(parser,- "found duplicate anchor; first occurrence",- alias_data->mark, "second occurrence", data.mark);- }- }-- if (!PUSH(parser, parser->aliases, data)) {- yaml_free(anchor);- return 0;- }-- return 1;-}--/*- * Compose node into its parent in the stree.- */--static int-yaml_parser_load_node_add(yaml_parser_t *parser, struct loader_ctx *ctx,- int index)-{- struct yaml_node_s *parent;- int parent_index;-- if (STACK_EMPTY(parser, *ctx)) {- /* This is the root node, there's no tree to add it to. */- return 1;- }-- parent_index = *((*ctx).top - 1);- parent = &parser->document->nodes.start[parent_index-1];-- switch (parent->type) {- case YAML_SEQUENCE_NODE:- if (!STACK_LIMIT(parser, parent->data.sequence.items, INT_MAX-1))- return 0;- if (!PUSH(parser, parent->data.sequence.items, index))- return 0;- break;- case YAML_MAPPING_NODE: {- yaml_node_pair_t pair;- if (!STACK_EMPTY(parser, parent->data.mapping.pairs)) {- yaml_node_pair_t *p = parent->data.mapping.pairs.top - 1;- if (p->key != 0 && p->value == 0) {- p->value = index;- break;- }- }-- pair.key = index;- pair.value = 0;- if (!STACK_LIMIT(parser, parent->data.mapping.pairs, INT_MAX-1))- return 0;- if (!PUSH(parser, parent->data.mapping.pairs, pair))- return 0;-- break;- }- default:- assert(0); /* Could not happen. */- return 0;- }- return 1;-}--/*- * Compose a node corresponding to an alias.- */--static int-yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx)-{- yaml_char_t *anchor = event->data.alias.anchor;- yaml_alias_data_t *alias_data;-- for (alias_data = parser->aliases.start;- alias_data != parser->aliases.top; alias_data ++) {- if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) {- yaml_free(anchor);- return yaml_parser_load_node_add(parser, ctx, alias_data->index);- }- }-- yaml_free(anchor);- return yaml_parser_set_composer_error(parser, "found undefined alias",- event->start_mark);-}--/*- * Compose a scalar node.- */--static int-yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx)-{- yaml_node_t node;- int index;- yaml_char_t *tag = event->data.scalar.tag;-- if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;-- if (!tag || strcmp((char *)tag, "!") == 0) {- yaml_free(tag);- tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SCALAR_TAG);- if (!tag) goto error;- }-- SCALAR_NODE_INIT(node, tag, event->data.scalar.value,- event->data.scalar.length, event->data.scalar.style,- event->start_mark, event->end_mark);-- if (!PUSH(parser, parser->document->nodes, node)) goto error;-- index = parser->document->nodes.top - parser->document->nodes.start;-- if (!yaml_parser_register_anchor(parser, index,- event->data.scalar.anchor)) return 0;-- return yaml_parser_load_node_add(parser, ctx, index);--error:- yaml_free(tag);- yaml_free(event->data.scalar.anchor);- yaml_free(event->data.scalar.value);- return 0;-}--/*- * Compose a sequence node.- */--static int-yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx)-{- yaml_node_t node;- struct {- yaml_node_item_t *start;- yaml_node_item_t *end;- yaml_node_item_t *top;- } items = { NULL, NULL, NULL };- int index;- yaml_char_t *tag = event->data.sequence_start.tag;-- if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;-- if (!tag || strcmp((char *)tag, "!") == 0) {- yaml_free(tag);- tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG);- if (!tag) goto error;- }-- if (!STACK_INIT(parser, items, yaml_node_item_t*)) goto error;-- SEQUENCE_NODE_INIT(node, tag, items.start, items.end,- event->data.sequence_start.style,- event->start_mark, event->end_mark);-- if (!PUSH(parser, parser->document->nodes, node)) goto error;-- index = parser->document->nodes.top - parser->document->nodes.start;-- if (!yaml_parser_register_anchor(parser, index,- event->data.sequence_start.anchor)) return 0;-- if (!yaml_parser_load_node_add(parser, ctx, index)) return 0;-- if (!STACK_LIMIT(parser, *ctx, INT_MAX-1)) return 0;- if (!PUSH(parser, *ctx, index)) return 0;-- return 1;--error:- yaml_free(tag);- yaml_free(event->data.sequence_start.anchor);- return 0;-}--static int-yaml_parser_load_sequence_end(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx)-{- int index;-- assert(((*ctx).top - (*ctx).start) > 0);-- index = *((*ctx).top - 1);- assert(parser->document->nodes.start[index-1].type == YAML_SEQUENCE_NODE);- parser->document->nodes.start[index-1].end_mark = event->end_mark;-- (void)POP(parser, *ctx);-- return 1;-}--/*- * Compose a mapping node.- */--static int-yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx)-{- yaml_node_t node;- struct {- yaml_node_pair_t *start;- yaml_node_pair_t *end;- yaml_node_pair_t *top;- } pairs = { NULL, NULL, NULL };- int index;- yaml_char_t *tag = event->data.mapping_start.tag;-- if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;-- if (!tag || strcmp((char *)tag, "!") == 0) {- yaml_free(tag);- tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_MAPPING_TAG);- if (!tag) goto error;- }-- if (!STACK_INIT(parser, pairs, yaml_node_pair_t*)) goto error;-- MAPPING_NODE_INIT(node, tag, pairs.start, pairs.end,- event->data.mapping_start.style,- event->start_mark, event->end_mark);-- if (!PUSH(parser, parser->document->nodes, node)) goto error;-- index = parser->document->nodes.top - parser->document->nodes.start;-- if (!yaml_parser_register_anchor(parser, index,- event->data.mapping_start.anchor)) return 0;-- if (!yaml_parser_load_node_add(parser, ctx, index)) return 0;-- if (!STACK_LIMIT(parser, *ctx, INT_MAX-1)) return 0;- if (!PUSH(parser, *ctx, index)) return 0;-- return 1;--error:- yaml_free(tag);- yaml_free(event->data.mapping_start.anchor);- return 0;-}--static int-yaml_parser_load_mapping_end(yaml_parser_t *parser, yaml_event_t *event,- struct loader_ctx *ctx)-{- int index;-- assert(((*ctx).top - (*ctx).start) > 0);-- index = *((*ctx).top - 1);- assert(parser->document->nodes.start[index-1].type == YAML_MAPPING_NODE);- parser->document->nodes.start[index-1].end_mark = event->end_mark;-- (void)POP(parser, *ctx);-- return 1;-}
− libyaml_src/parser.c
@@ -1,1375 +0,0 @@--/*- * The parser implements the following grammar:- *- * stream ::= STREAM-START implicit_document? explicit_document* STREAM-END- * implicit_document ::= block_node DOCUMENT-END*- * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*- * block_node_or_indentless_sequence ::=- * ALIAS- * | properties (block_content | indentless_block_sequence)?- * | block_content- * | indentless_block_sequence- * block_node ::= ALIAS- * | properties block_content?- * | block_content- * flow_node ::= ALIAS- * | properties flow_content?- * | flow_content- * properties ::= TAG ANCHOR? | ANCHOR TAG?- * block_content ::= block_collection | flow_collection | SCALAR- * flow_content ::= flow_collection | SCALAR- * block_collection ::= block_sequence | block_mapping- * flow_collection ::= flow_sequence | flow_mapping- * block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END- * indentless_sequence ::= (BLOCK-ENTRY block_node?)+- * block_mapping ::= BLOCK-MAPPING_START- * ((KEY block_node_or_indentless_sequence?)?- * (VALUE block_node_or_indentless_sequence?)?)*- * BLOCK-END- * flow_sequence ::= FLOW-SEQUENCE-START- * (flow_sequence_entry FLOW-ENTRY)*- * flow_sequence_entry?- * FLOW-SEQUENCE-END- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?- * flow_mapping ::= FLOW-MAPPING-START- * (flow_mapping_entry FLOW-ENTRY)*- * flow_mapping_entry?- * FLOW-MAPPING-END- * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?- */--#include "yaml_private.h"--/*- * Peek the next token in the token queue.- */--#define PEEK_TOKEN(parser) \- ((parser->token_available || yaml_parser_fetch_more_tokens(parser)) ? \- parser->tokens.head : NULL)--/*- * Remove the next token from the queue (must be called after PEEK_TOKEN).- */--#define SKIP_TOKEN(parser) \- (parser->token_available = 0, \- parser->tokens_parsed ++, \- parser->stream_end_produced = \- (parser->tokens.head->type == YAML_STREAM_END_TOKEN), \- parser->tokens.head ++)--/*- * Public API declarations.- */--YAML_DECLARE(int)-yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event);--/*- * Error handling.- */--static int-yaml_parser_set_parser_error(yaml_parser_t *parser,- const char *problem, yaml_mark_t problem_mark);--static int-yaml_parser_set_parser_error_context(yaml_parser_t *parser,- const char *context, yaml_mark_t context_mark,- const char *problem, yaml_mark_t problem_mark);--/*- * State functions.- */--static int-yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event);--static int-yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event);--static int-yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event,- int implicit);--static int-yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event);--static int-yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event);--static int-yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event,- int block, int indentless_sequence);--static int-yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser,- yaml_event_t *event, int first);--static int-yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser,- yaml_event_t *event);--static int-yaml_parser_parse_block_mapping_key(yaml_parser_t *parser,- yaml_event_t *event, int first);--static int-yaml_parser_parse_block_mapping_value(yaml_parser_t *parser,- yaml_event_t *event);--static int-yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser,- yaml_event_t *event, int first);--static int-yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser,- yaml_event_t *event);--static int-yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser,- yaml_event_t *event);--static int-yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser,- yaml_event_t *event);--static int-yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser,- yaml_event_t *event, int first);--static int-yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser,- yaml_event_t *event, int empty);--/*- * Utility functions.- */--static int-yaml_parser_process_empty_scalar(yaml_parser_t *parser,- yaml_event_t *event, yaml_mark_t mark);--static int-yaml_parser_process_directives(yaml_parser_t *parser,- yaml_version_directive_t **version_directive_ref,- yaml_tag_directive_t **tag_directives_start_ref,- yaml_tag_directive_t **tag_directives_end_ref);--static int-yaml_parser_append_tag_directive(yaml_parser_t *parser,- yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark);--/*- * Get the next event.- */--YAML_DECLARE(int)-yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event)-{- assert(parser); /* Non-NULL parser object is expected. */- assert(event); /* Non-NULL event object is expected. */-- /* Erase the event object. */-- memset(event, 0, sizeof(yaml_event_t));-- /* No events after the end of the stream or error. */-- if (parser->stream_end_produced || parser->error ||- parser->state == YAML_PARSE_END_STATE) {- return 1;- }-- /* Generate the next event. */-- return yaml_parser_state_machine(parser, event);-}--/*- * Set parser error.- */--static int-yaml_parser_set_parser_error(yaml_parser_t *parser,- const char *problem, yaml_mark_t problem_mark)-{- parser->error = YAML_PARSER_ERROR;- parser->problem = problem;- parser->problem_mark = problem_mark;-- return 0;-}--static int-yaml_parser_set_parser_error_context(yaml_parser_t *parser,- const char *context, yaml_mark_t context_mark,- const char *problem, yaml_mark_t problem_mark)-{- parser->error = YAML_PARSER_ERROR;- parser->context = context;- parser->context_mark = context_mark;- parser->problem = problem;- parser->problem_mark = problem_mark;-- return 0;-}---/*- * State dispatcher.- */--static int-yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event)-{- switch (parser->state)- {- case YAML_PARSE_STREAM_START_STATE:- return yaml_parser_parse_stream_start(parser, event);-- case YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE:- return yaml_parser_parse_document_start(parser, event, 1);-- case YAML_PARSE_DOCUMENT_START_STATE:- return yaml_parser_parse_document_start(parser, event, 0);-- case YAML_PARSE_DOCUMENT_CONTENT_STATE:- return yaml_parser_parse_document_content(parser, event);-- case YAML_PARSE_DOCUMENT_END_STATE:- return yaml_parser_parse_document_end(parser, event);-- case YAML_PARSE_BLOCK_NODE_STATE:- return yaml_parser_parse_node(parser, event, 1, 0);-- case YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:- return yaml_parser_parse_node(parser, event, 1, 1);-- case YAML_PARSE_FLOW_NODE_STATE:- return yaml_parser_parse_node(parser, event, 0, 0);-- case YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:- return yaml_parser_parse_block_sequence_entry(parser, event, 1);-- case YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:- return yaml_parser_parse_block_sequence_entry(parser, event, 0);-- case YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:- return yaml_parser_parse_indentless_sequence_entry(parser, event);-- case YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:- return yaml_parser_parse_block_mapping_key(parser, event, 1);-- case YAML_PARSE_BLOCK_MAPPING_KEY_STATE:- return yaml_parser_parse_block_mapping_key(parser, event, 0);-- case YAML_PARSE_BLOCK_MAPPING_VALUE_STATE:- return yaml_parser_parse_block_mapping_value(parser, event);-- case YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:- return yaml_parser_parse_flow_sequence_entry(parser, event, 1);-- case YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE:- return yaml_parser_parse_flow_sequence_entry(parser, event, 0);-- case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:- return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event);-- case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:- return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event);-- case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:- return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event);-- case YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:- return yaml_parser_parse_flow_mapping_key(parser, event, 1);-- case YAML_PARSE_FLOW_MAPPING_KEY_STATE:- return yaml_parser_parse_flow_mapping_key(parser, event, 0);-- case YAML_PARSE_FLOW_MAPPING_VALUE_STATE:- return yaml_parser_parse_flow_mapping_value(parser, event, 0);-- case YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:- return yaml_parser_parse_flow_mapping_value(parser, event, 1);-- default:- assert(1); /* Invalid state. */- }-- return 0;-}--/*- * Parse the production:- * stream ::= STREAM-START implicit_document? explicit_document* STREAM-END- * ************- */--static int-yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event)-{- yaml_token_t *token;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type != YAML_STREAM_START_TOKEN) {- return yaml_parser_set_parser_error(parser,- "did not find expected <stream-start>", token->start_mark);- }-- parser->state = YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE;- STREAM_START_EVENT_INIT(*event, token->data.stream_start.encoding,- token->start_mark, token->start_mark);- SKIP_TOKEN(parser);-- return 1;-}--/*- * Parse the productions:- * implicit_document ::= block_node DOCUMENT-END*- * *- * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*- * *************************- */--static int-yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event,- int implicit)-{- yaml_token_t *token;- yaml_version_directive_t *version_directive = NULL;- struct {- yaml_tag_directive_t *start;- yaml_tag_directive_t *end;- } tag_directives = { NULL, NULL };-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- /* Parse extra document end indicators. */-- if (!implicit)- {- while (token->type == YAML_DOCUMENT_END_TOKEN) {- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- }- }-- /* Parse an implicit document. */-- if (implicit && token->type != YAML_VERSION_DIRECTIVE_TOKEN &&- token->type != YAML_TAG_DIRECTIVE_TOKEN &&- token->type != YAML_DOCUMENT_START_TOKEN &&- token->type != YAML_STREAM_END_TOKEN)- {- if (!yaml_parser_process_directives(parser, NULL, NULL, NULL))- return 0;- if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE))- return 0;- parser->state = YAML_PARSE_BLOCK_NODE_STATE;- DOCUMENT_START_EVENT_INIT(*event, NULL, NULL, NULL, 1,- token->start_mark, token->start_mark);- return 1;- }-- /* Parse an explicit document. */-- else if (token->type != YAML_STREAM_END_TOKEN)- {- yaml_mark_t start_mark, end_mark;- start_mark = token->start_mark;- if (!yaml_parser_process_directives(parser, &version_directive,- &tag_directives.start, &tag_directives.end))- return 0;- token = PEEK_TOKEN(parser);- if (!token) goto error;- if (token->type != YAML_DOCUMENT_START_TOKEN) {- yaml_parser_set_parser_error(parser,- "did not find expected <document start>", token->start_mark);- goto error;- }- if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE))- goto error;- parser->state = YAML_PARSE_DOCUMENT_CONTENT_STATE;- end_mark = token->end_mark;- DOCUMENT_START_EVENT_INIT(*event, version_directive,- tag_directives.start, tag_directives.end, 0,- start_mark, end_mark);- SKIP_TOKEN(parser);- version_directive = NULL;- tag_directives.start = tag_directives.end = NULL;- return 1;- }-- /* Parse the stream end. */-- else- {- parser->state = YAML_PARSE_END_STATE;- STREAM_END_EVENT_INIT(*event, token->start_mark, token->end_mark);- SKIP_TOKEN(parser);- return 1;- }--error:- yaml_free(version_directive);- while (tag_directives.start != tag_directives.end) {- yaml_free(tag_directives.end[-1].handle);- yaml_free(tag_directives.end[-1].prefix);- tag_directives.end --;- }- yaml_free(tag_directives.start);- return 0;-}--/*- * Parse the productions:- * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*- * ***********- */--static int-yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event)-{- yaml_token_t *token;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type == YAML_VERSION_DIRECTIVE_TOKEN ||- token->type == YAML_TAG_DIRECTIVE_TOKEN ||- token->type == YAML_DOCUMENT_START_TOKEN ||- token->type == YAML_DOCUMENT_END_TOKEN ||- token->type == YAML_STREAM_END_TOKEN) {- parser->state = POP(parser, parser->states);- return yaml_parser_process_empty_scalar(parser, event,- token->start_mark);- }- else {- return yaml_parser_parse_node(parser, event, 1, 0);- }-}--/*- * Parse the productions:- * implicit_document ::= block_node DOCUMENT-END*- * *************- * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*- * *************- */--static int-yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event)-{- yaml_token_t *token;- yaml_mark_t start_mark, end_mark;- int implicit = 1;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- start_mark = end_mark = token->start_mark;-- if (token->type == YAML_DOCUMENT_END_TOKEN) {- end_mark = token->end_mark;- SKIP_TOKEN(parser);- implicit = 0;- }-- while (!STACK_EMPTY(parser, parser->tag_directives)) {- yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);- yaml_free(tag_directive.handle);- yaml_free(tag_directive.prefix);- }-- parser->state = YAML_PARSE_DOCUMENT_START_STATE;- DOCUMENT_END_EVENT_INIT(*event, implicit, start_mark, end_mark);-- return 1;-}--/*- * Parse the productions:- * block_node_or_indentless_sequence ::=- * ALIAS- * *****- * | properties (block_content | indentless_block_sequence)?- * ********** *- * | block_content | indentless_block_sequence- * *- * block_node ::= ALIAS- * *****- * | properties block_content?- * ********** *- * | block_content- * *- * flow_node ::= ALIAS- * *****- * | properties flow_content?- * ********** *- * | flow_content- * *- * properties ::= TAG ANCHOR? | ANCHOR TAG?- * *************************- * block_content ::= block_collection | flow_collection | SCALAR- * ******- * flow_content ::= flow_collection | SCALAR- * ******- */--static int-yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event,- int block, int indentless_sequence)-{- yaml_token_t *token;- yaml_char_t *anchor = NULL;- yaml_char_t *tag_handle = NULL;- yaml_char_t *tag_suffix = NULL;- yaml_char_t *tag = NULL;- yaml_mark_t start_mark, end_mark, tag_mark;- int implicit;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type == YAML_ALIAS_TOKEN)- {- parser->state = POP(parser, parser->states);- ALIAS_EVENT_INIT(*event, token->data.alias.value,- token->start_mark, token->end_mark);- SKIP_TOKEN(parser);- return 1;- }-- else- {- start_mark = end_mark = token->start_mark;-- if (token->type == YAML_ANCHOR_TOKEN)- {- anchor = token->data.anchor.value;- start_mark = token->start_mark;- end_mark = token->end_mark;- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) goto error;- if (token->type == YAML_TAG_TOKEN)- {- tag_handle = token->data.tag.handle;- tag_suffix = token->data.tag.suffix;- tag_mark = token->start_mark;- end_mark = token->end_mark;- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) goto error;- }- }- else if (token->type == YAML_TAG_TOKEN)- {- tag_handle = token->data.tag.handle;- tag_suffix = token->data.tag.suffix;- start_mark = tag_mark = token->start_mark;- end_mark = token->end_mark;- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) goto error;- if (token->type == YAML_ANCHOR_TOKEN)- {- anchor = token->data.anchor.value;- end_mark = token->end_mark;- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) goto error;- }- }-- if (tag_handle) {- if (!*tag_handle) {- tag = tag_suffix;- yaml_free(tag_handle);- tag_handle = tag_suffix = NULL;- }- else {- yaml_tag_directive_t *tag_directive;- for (tag_directive = parser->tag_directives.start;- tag_directive != parser->tag_directives.top;- tag_directive ++) {- if (strcmp((char *)tag_directive->handle, (char *)tag_handle) == 0) {- size_t prefix_len = strlen((char *)tag_directive->prefix);- size_t suffix_len = strlen((char *)tag_suffix);- tag = YAML_MALLOC(prefix_len+suffix_len+1);- if (!tag) {- parser->error = YAML_MEMORY_ERROR;- goto error;- }- memcpy(tag, tag_directive->prefix, prefix_len);- memcpy(tag+prefix_len, tag_suffix, suffix_len);- tag[prefix_len+suffix_len] = '\0';- yaml_free(tag_handle);- yaml_free(tag_suffix);- tag_handle = tag_suffix = NULL;- break;- }- }- if (!tag) {- yaml_parser_set_parser_error_context(parser,- "while parsing a node", start_mark,- "found undefined tag handle", tag_mark);- goto error;- }- }- }-- implicit = (!tag || !*tag);- if (indentless_sequence && token->type == YAML_BLOCK_ENTRY_TOKEN) {- end_mark = token->end_mark;- parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE;- SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,- YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark);- return 1;- }- else {- if (token->type == YAML_SCALAR_TOKEN) {- int plain_implicit = 0;- int quoted_implicit = 0;- end_mark = token->end_mark;- if ((token->data.scalar.style == YAML_PLAIN_SCALAR_STYLE && !tag)- || (tag && strcmp((char *)tag, "!") == 0)) {- plain_implicit = 1;- }- else if (!tag) {- quoted_implicit = 1;- }- parser->state = POP(parser, parser->states);- SCALAR_EVENT_INIT(*event, anchor, tag,- token->data.scalar.value, token->data.scalar.length,- plain_implicit, quoted_implicit,- token->data.scalar.style, start_mark, end_mark);- SKIP_TOKEN(parser);- return 1;- }- else if (token->type == YAML_FLOW_SEQUENCE_START_TOKEN) {- end_mark = token->end_mark;- parser->state = YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE;- SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,- YAML_FLOW_SEQUENCE_STYLE, start_mark, end_mark);- return 1;- }- else if (token->type == YAML_FLOW_MAPPING_START_TOKEN) {- end_mark = token->end_mark;- parser->state = YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE;- MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit,- YAML_FLOW_MAPPING_STYLE, start_mark, end_mark);- return 1;- }- else if (block && token->type == YAML_BLOCK_SEQUENCE_START_TOKEN) {- end_mark = token->end_mark;- parser->state = YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE;- SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,- YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark);- return 1;- }- else if (block && token->type == YAML_BLOCK_MAPPING_START_TOKEN) {- end_mark = token->end_mark;- parser->state = YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE;- MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit,- YAML_BLOCK_MAPPING_STYLE, start_mark, end_mark);- return 1;- }- else if (anchor || tag) {- yaml_char_t *value = YAML_MALLOC(1);- if (!value) {- parser->error = YAML_MEMORY_ERROR;- goto error;- }- value[0] = '\0';- parser->state = POP(parser, parser->states);- SCALAR_EVENT_INIT(*event, anchor, tag, value, 0,- implicit, 0, YAML_PLAIN_SCALAR_STYLE,- start_mark, end_mark);- return 1;- }- else {- yaml_parser_set_parser_error_context(parser,- (block ? "while parsing a block node"- : "while parsing a flow node"), start_mark,- "did not find expected node content", token->start_mark);- goto error;- }- }- }--error:- yaml_free(anchor);- yaml_free(tag_handle);- yaml_free(tag_suffix);- yaml_free(tag);-- return 0;-}--/*- * Parse the productions:- * block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END- * ******************** *********** * *********- */--static int-yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser,- yaml_event_t *event, int first)-{- yaml_token_t *token;-- if (first) {- token = PEEK_TOKEN(parser);- if (!PUSH(parser, parser->marks, token->start_mark))- return 0;- SKIP_TOKEN(parser);- }-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type == YAML_BLOCK_ENTRY_TOKEN)- {- yaml_mark_t mark = token->end_mark;- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- if (token->type != YAML_BLOCK_ENTRY_TOKEN &&- token->type != YAML_BLOCK_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 1, 0);- }- else {- parser->state = YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE;- return yaml_parser_process_empty_scalar(parser, event, mark);- }- }-- else if (token->type == YAML_BLOCK_END_TOKEN)- {- parser->state = POP(parser, parser->states);- (void)POP(parser, parser->marks);- SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark);- SKIP_TOKEN(parser);- return 1;- }-- else- {- return yaml_parser_set_parser_error_context(parser,- "while parsing a block collection", POP(parser, parser->marks),- "did not find expected '-' indicator", token->start_mark);- }-}--/*- * Parse the productions:- * indentless_sequence ::= (BLOCK-ENTRY block_node?)+- * *********** *- */--static int-yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser,- yaml_event_t *event)-{- yaml_token_t *token;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type == YAML_BLOCK_ENTRY_TOKEN)- {- yaml_mark_t mark = token->end_mark;- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- if (token->type != YAML_BLOCK_ENTRY_TOKEN &&- token->type != YAML_KEY_TOKEN &&- token->type != YAML_VALUE_TOKEN &&- token->type != YAML_BLOCK_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 1, 0);- }- else {- parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE;- return yaml_parser_process_empty_scalar(parser, event, mark);- }- }-- else- {- parser->state = POP(parser, parser->states);- SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->start_mark);- return 1;- }-}--/*- * Parse the productions:- * block_mapping ::= BLOCK-MAPPING_START- * *******************- * ((KEY block_node_or_indentless_sequence?)?- * *** *- * (VALUE block_node_or_indentless_sequence?)?)*- *- * BLOCK-END- * *********- */--static int-yaml_parser_parse_block_mapping_key(yaml_parser_t *parser,- yaml_event_t *event, int first)-{- yaml_token_t *token;-- if (first) {- token = PEEK_TOKEN(parser);- if (!PUSH(parser, parser->marks, token->start_mark))- return 0;- SKIP_TOKEN(parser);- }-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type == YAML_KEY_TOKEN)- {- yaml_mark_t mark = token->end_mark;- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- if (token->type != YAML_KEY_TOKEN &&- token->type != YAML_VALUE_TOKEN &&- token->type != YAML_BLOCK_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_BLOCK_MAPPING_VALUE_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 1, 1);- }- else {- parser->state = YAML_PARSE_BLOCK_MAPPING_VALUE_STATE;- return yaml_parser_process_empty_scalar(parser, event, mark);- }- }-- else if (token->type == YAML_BLOCK_END_TOKEN)- {- parser->state = POP(parser, parser->states);- (void)POP(parser, parser->marks);- MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark);- SKIP_TOKEN(parser);- return 1;- }-- else- {- return yaml_parser_set_parser_error_context(parser,- "while parsing a block mapping", POP(parser, parser->marks),- "did not find expected key", token->start_mark);- }-}--/*- * Parse the productions:- * block_mapping ::= BLOCK-MAPPING_START- *- * ((KEY block_node_or_indentless_sequence?)?- *- * (VALUE block_node_or_indentless_sequence?)?)*- * ***** *- * BLOCK-END- *- */--static int-yaml_parser_parse_block_mapping_value(yaml_parser_t *parser,- yaml_event_t *event)-{- yaml_token_t *token;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type == YAML_VALUE_TOKEN)- {- yaml_mark_t mark = token->end_mark;- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- if (token->type != YAML_KEY_TOKEN &&- token->type != YAML_VALUE_TOKEN &&- token->type != YAML_BLOCK_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_BLOCK_MAPPING_KEY_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 1, 1);- }- else {- parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE;- return yaml_parser_process_empty_scalar(parser, event, mark);- }- }-- else- {- parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE;- return yaml_parser_process_empty_scalar(parser, event, token->start_mark);- }-}--/*- * Parse the productions:- * flow_sequence ::= FLOW-SEQUENCE-START- * *******************- * (flow_sequence_entry FLOW-ENTRY)*- * * **********- * flow_sequence_entry?- * *- * FLOW-SEQUENCE-END- * *****************- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?- * *- */--static int-yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser,- yaml_event_t *event, int first)-{- yaml_token_t *token;-- if (first) {- token = PEEK_TOKEN(parser);- if (!PUSH(parser, parser->marks, token->start_mark))- return 0;- SKIP_TOKEN(parser);- }-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN)- {- if (!first) {- if (token->type == YAML_FLOW_ENTRY_TOKEN) {- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- }- else {- return yaml_parser_set_parser_error_context(parser,- "while parsing a flow sequence", POP(parser, parser->marks),- "did not find expected ',' or ']'", token->start_mark);- }- }-- if (token->type == YAML_KEY_TOKEN) {- parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE;- MAPPING_START_EVENT_INIT(*event, NULL, NULL,- 1, YAML_FLOW_MAPPING_STYLE,- token->start_mark, token->end_mark);- SKIP_TOKEN(parser);- return 1;- }-- else if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 0, 0);- }- }-- parser->state = POP(parser, parser->states);- (void)POP(parser, parser->marks);- SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark);- SKIP_TOKEN(parser);- return 1;-}--/*- * Parse the productions:- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?- * *** *- */--static int-yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser,- yaml_event_t *event)-{- yaml_token_t *token;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type != YAML_VALUE_TOKEN && token->type != YAML_FLOW_ENTRY_TOKEN- && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 0, 0);- }- else {- yaml_mark_t mark = token->end_mark;- SKIP_TOKEN(parser);- parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE;- return yaml_parser_process_empty_scalar(parser, event, mark);- }-}--/*- * Parse the productions:- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?- * ***** *- */--static int-yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser,- yaml_event_t *event)-{- yaml_token_t *token;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type == YAML_VALUE_TOKEN) {- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- if (token->type != YAML_FLOW_ENTRY_TOKEN- && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 0, 0);- }- }- parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE;- return yaml_parser_process_empty_scalar(parser, event, token->start_mark);-}--/*- * Parse the productions:- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?- * *- */--static int-yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser,- yaml_event_t *event)-{- yaml_token_t *token;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE;-- MAPPING_END_EVENT_INIT(*event, token->start_mark, token->start_mark);- return 1;-}--/*- * Parse the productions:- * flow_mapping ::= FLOW-MAPPING-START- * ******************- * (flow_mapping_entry FLOW-ENTRY)*- * * **********- * flow_mapping_entry?- * ******************- * FLOW-MAPPING-END- * ****************- * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?- * * *** *- */--static int-yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser,- yaml_event_t *event, int first)-{- yaml_token_t *token;-- if (first) {- token = PEEK_TOKEN(parser);- if (!PUSH(parser, parser->marks, token->start_mark))- return 0;- SKIP_TOKEN(parser);- }-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (token->type != YAML_FLOW_MAPPING_END_TOKEN)- {- if (!first) {- if (token->type == YAML_FLOW_ENTRY_TOKEN) {- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- }- else {- return yaml_parser_set_parser_error_context(parser,- "while parsing a flow mapping", POP(parser, parser->marks),- "did not find expected ',' or '}'", token->start_mark);- }- }-- if (token->type == YAML_KEY_TOKEN) {- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- if (token->type != YAML_VALUE_TOKEN- && token->type != YAML_FLOW_ENTRY_TOKEN- && token->type != YAML_FLOW_MAPPING_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_FLOW_MAPPING_VALUE_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 0, 0);- }- else {- parser->state = YAML_PARSE_FLOW_MAPPING_VALUE_STATE;- return yaml_parser_process_empty_scalar(parser, event,- token->start_mark);- }- }- else if (token->type != YAML_FLOW_MAPPING_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 0, 0);- }- }-- parser->state = POP(parser, parser->states);- (void)POP(parser, parser->marks);- MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark);- SKIP_TOKEN(parser);- return 1;-}--/*- * Parse the productions:- * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?- * * ***** *- */--static int-yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser,- yaml_event_t *event, int empty)-{- yaml_token_t *token;-- token = PEEK_TOKEN(parser);- if (!token) return 0;-- if (empty) {- parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE;- return yaml_parser_process_empty_scalar(parser, event,- token->start_mark);- }-- if (token->type == YAML_VALUE_TOKEN) {- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) return 0;- if (token->type != YAML_FLOW_ENTRY_TOKEN- && token->type != YAML_FLOW_MAPPING_END_TOKEN) {- if (!PUSH(parser, parser->states,- YAML_PARSE_FLOW_MAPPING_KEY_STATE))- return 0;- return yaml_parser_parse_node(parser, event, 0, 0);- }- }-- parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE;- return yaml_parser_process_empty_scalar(parser, event, token->start_mark);-}--/*- * Generate an empty scalar event.- */--static int-yaml_parser_process_empty_scalar(yaml_parser_t *parser, yaml_event_t *event,- yaml_mark_t mark)-{- yaml_char_t *value;-- value = YAML_MALLOC(1);- if (!value) {- parser->error = YAML_MEMORY_ERROR;- return 0;- }- value[0] = '\0';-- SCALAR_EVENT_INIT(*event, NULL, NULL, value, 0,- 1, 0, YAML_PLAIN_SCALAR_STYLE, mark, mark);-- return 1;-}--/*- * Parse directives.- */--static int-yaml_parser_process_directives(yaml_parser_t *parser,- yaml_version_directive_t **version_directive_ref,- yaml_tag_directive_t **tag_directives_start_ref,- yaml_tag_directive_t **tag_directives_end_ref)-{- yaml_tag_directive_t default_tag_directives[] = {- {(yaml_char_t *)"!", (yaml_char_t *)"!"},- {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"},- {NULL, NULL}- };- yaml_tag_directive_t *default_tag_directive;- yaml_version_directive_t *version_directive = NULL;- struct {- yaml_tag_directive_t *start;- yaml_tag_directive_t *end;- yaml_tag_directive_t *top;- } tag_directives = { NULL, NULL, NULL };- yaml_token_t *token;-- if (!STACK_INIT(parser, tag_directives, yaml_tag_directive_t*))- goto error;-- token = PEEK_TOKEN(parser);- if (!token) goto error;-- while (token->type == YAML_VERSION_DIRECTIVE_TOKEN ||- token->type == YAML_TAG_DIRECTIVE_TOKEN)- {- if (token->type == YAML_VERSION_DIRECTIVE_TOKEN) {- if (version_directive) {- yaml_parser_set_parser_error(parser,- "found duplicate %YAML directive", token->start_mark);- goto error;- }- if (token->data.version_directive.major != 1- || (- token->data.version_directive.minor != 1- && token->data.version_directive.minor != 2- )) {- yaml_parser_set_parser_error(parser,- "found incompatible YAML document", token->start_mark);- goto error;- }- version_directive = YAML_MALLOC_STATIC(yaml_version_directive_t);- if (!version_directive) {- parser->error = YAML_MEMORY_ERROR;- goto error;- }- version_directive->major = token->data.version_directive.major;- version_directive->minor = token->data.version_directive.minor;- }-- else if (token->type == YAML_TAG_DIRECTIVE_TOKEN) {- yaml_tag_directive_t value;- value.handle = token->data.tag_directive.handle;- value.prefix = token->data.tag_directive.prefix;-- if (!yaml_parser_append_tag_directive(parser, value, 0,- token->start_mark))- goto error;- if (!PUSH(parser, tag_directives, value))- goto error;- }-- SKIP_TOKEN(parser);- token = PEEK_TOKEN(parser);- if (!token) goto error;- }-- for (default_tag_directive = default_tag_directives;- default_tag_directive->handle; default_tag_directive++) {- if (!yaml_parser_append_tag_directive(parser, *default_tag_directive, 1,- token->start_mark))- goto error;- }-- if (version_directive_ref) {- *version_directive_ref = version_directive;- }- if (tag_directives_start_ref) {- if (STACK_EMPTY(parser, tag_directives)) {- *tag_directives_start_ref = *tag_directives_end_ref = NULL;- STACK_DEL(parser, tag_directives);- }- else {- *tag_directives_start_ref = tag_directives.start;- *tag_directives_end_ref = tag_directives.top;- }- }- else {- STACK_DEL(parser, tag_directives);- }-- if (!version_directive_ref)- yaml_free(version_directive);- return 1;--error:- yaml_free(version_directive);- while (!STACK_EMPTY(parser, tag_directives)) {- yaml_tag_directive_t tag_directive = POP(parser, tag_directives);- yaml_free(tag_directive.handle);- yaml_free(tag_directive.prefix);- }- STACK_DEL(parser, tag_directives);- return 0;-}--/*- * Append a tag directive to the directives stack.- */--static int-yaml_parser_append_tag_directive(yaml_parser_t *parser,- yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark)-{- yaml_tag_directive_t *tag_directive;- yaml_tag_directive_t copy = { NULL, NULL };-- for (tag_directive = parser->tag_directives.start;- tag_directive != parser->tag_directives.top; tag_directive ++) {- if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {- if (allow_duplicates)- return 1;- return yaml_parser_set_parser_error(parser,- "found duplicate %TAG directive", mark);- }- }-- copy.handle = yaml_strdup(value.handle);- copy.prefix = yaml_strdup(value.prefix);- if (!copy.handle || !copy.prefix) {- parser->error = YAML_MEMORY_ERROR;- goto error;- }-- if (!PUSH(parser, parser->tag_directives, copy))- goto error;-- return 1;--error:- yaml_free(copy.handle);- yaml_free(copy.prefix);- return 0;-}-
− libyaml_src/reader.c
@@ -1,469 +0,0 @@--#include "yaml_private.h"--/*- * Declarations.- */--static int-yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem,- size_t offset, int value);--static int-yaml_parser_update_raw_buffer(yaml_parser_t *parser);--static int-yaml_parser_determine_encoding(yaml_parser_t *parser);--YAML_DECLARE(int)-yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);--/*- * Set the reader error and return 0.- */--static int-yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem,- size_t offset, int value)-{- parser->error = YAML_READER_ERROR;- parser->problem = problem;- parser->problem_offset = offset;- parser->problem_value = value;-- return 0;-}--/*- * Byte order marks.- */--#define BOM_UTF8 "\xef\xbb\xbf"-#define BOM_UTF16LE "\xff\xfe"-#define BOM_UTF16BE "\xfe\xff"--/*- * Determine the input stream encoding by checking the BOM symbol. If no BOM is- * found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure.- */--static int-yaml_parser_determine_encoding(yaml_parser_t *parser)-{- /* Ensure that we had enough bytes in the raw buffer. */-- while (!parser->eof- && parser->raw_buffer.last - parser->raw_buffer.pointer < 3) {- if (!yaml_parser_update_raw_buffer(parser)) {- return 0;- }- }-- /* Determine the encoding. */-- if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2- && !memcmp(parser->raw_buffer.pointer, BOM_UTF16LE, 2)) {- parser->encoding = YAML_UTF16LE_ENCODING;- parser->raw_buffer.pointer += 2;- parser->offset += 2;- }- else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2- && !memcmp(parser->raw_buffer.pointer, BOM_UTF16BE, 2)) {- parser->encoding = YAML_UTF16BE_ENCODING;- parser->raw_buffer.pointer += 2;- parser->offset += 2;- }- else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 3- && !memcmp(parser->raw_buffer.pointer, BOM_UTF8, 3)) {- parser->encoding = YAML_UTF8_ENCODING;- parser->raw_buffer.pointer += 3;- parser->offset += 3;- }- else {- parser->encoding = YAML_UTF8_ENCODING;- }-- return 1;-}--/*- * Update the raw buffer.- */--static int-yaml_parser_update_raw_buffer(yaml_parser_t *parser)-{- size_t size_read = 0;-- /* Return if the raw buffer is full. */-- if (parser->raw_buffer.start == parser->raw_buffer.pointer- && parser->raw_buffer.last == parser->raw_buffer.end)- return 1;-- /* Return on EOF. */-- if (parser->eof) return 1;-- /* Move the remaining bytes in the raw buffer to the beginning. */-- if (parser->raw_buffer.start < parser->raw_buffer.pointer- && parser->raw_buffer.pointer < parser->raw_buffer.last) {- memmove(parser->raw_buffer.start, parser->raw_buffer.pointer,- parser->raw_buffer.last - parser->raw_buffer.pointer);- }- parser->raw_buffer.last -=- parser->raw_buffer.pointer - parser->raw_buffer.start;- parser->raw_buffer.pointer = parser->raw_buffer.start;-- /* Call the read handler to fill the buffer. */-- if (!parser->read_handler(parser->read_handler_data, parser->raw_buffer.last,- parser->raw_buffer.end - parser->raw_buffer.last, &size_read)) {- return yaml_parser_set_reader_error(parser, "input error",- parser->offset, -1);- }- parser->raw_buffer.last += size_read;- if (!size_read) {- parser->eof = 1;- }-- return 1;-}--/*- * Ensure that the buffer contains at least `length` characters.- * Return 1 on success, 0 on failure.- *- * The length is supposed to be significantly less that the buffer size.- */--YAML_DECLARE(int)-yaml_parser_update_buffer(yaml_parser_t *parser, size_t length)-{- int first = 1;-- assert(parser->read_handler); /* Read handler must be set. */-- /* If the EOF flag is set and the raw buffer is empty, do nothing. */-- if (parser->eof && parser->raw_buffer.pointer == parser->raw_buffer.last)- return 1;-- /* Return if the buffer contains enough characters. */-- if (parser->unread >= length)- return 1;-- /* Determine the input encoding if it is not known yet. */-- if (!parser->encoding) {- if (!yaml_parser_determine_encoding(parser))- return 0;- }-- /* Move the unread characters to the beginning of the buffer. */-- if (parser->buffer.start < parser->buffer.pointer- && parser->buffer.pointer < parser->buffer.last) {- size_t size = parser->buffer.last - parser->buffer.pointer;- memmove(parser->buffer.start, parser->buffer.pointer, size);- parser->buffer.pointer = parser->buffer.start;- parser->buffer.last = parser->buffer.start + size;- }- else if (parser->buffer.pointer == parser->buffer.last) {- parser->buffer.pointer = parser->buffer.start;- parser->buffer.last = parser->buffer.start;- }-- /* Fill the buffer until it has enough characters. */-- while (parser->unread < length)- {- /* Fill the raw buffer if necessary. */-- if (!first || parser->raw_buffer.pointer == parser->raw_buffer.last) {- if (!yaml_parser_update_raw_buffer(parser)) return 0;- }- first = 0;-- /* Decode the raw buffer. */-- while (parser->raw_buffer.pointer != parser->raw_buffer.last)- {- unsigned int value = 0, value2 = 0;- int incomplete = 0;- unsigned char octet;- unsigned int width = 0;- int low, high;- size_t k;- size_t raw_unread = parser->raw_buffer.last - parser->raw_buffer.pointer;-- /* Decode the next character. */-- switch (parser->encoding)- {- case YAML_UTF8_ENCODING:-- /*- * Decode a UTF-8 character. Check RFC 3629- * (http://www.ietf.org/rfc/rfc3629.txt) for more details.- *- * The following table (taken from the RFC) is used for- * decoding.- *- * Char. number range | UTF-8 octet sequence- * (hexadecimal) | (binary)- * --------------------+------------------------------------- * 0000 0000-0000 007F | 0xxxxxxx- * 0000 0080-0000 07FF | 110xxxxx 10xxxxxx- * 0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx- * 0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx- *- * Additionally, the characters in the range 0xD800-0xDFFF- * are prohibited as they are reserved for use with UTF-16- * surrogate pairs.- */-- /* Determine the length of the UTF-8 sequence. */-- octet = parser->raw_buffer.pointer[0];- width = (octet & 0x80) == 0x00 ? 1 :- (octet & 0xE0) == 0xC0 ? 2 :- (octet & 0xF0) == 0xE0 ? 3 :- (octet & 0xF8) == 0xF0 ? 4 : 0;-- /* Check if the leading octet is valid. */-- if (!width)- return yaml_parser_set_reader_error(parser,- "invalid leading UTF-8 octet",- parser->offset, octet);-- /* Check if the raw buffer contains an incomplete character. */-- if (width > raw_unread) {- if (parser->eof) {- return yaml_parser_set_reader_error(parser,- "incomplete UTF-8 octet sequence",- parser->offset, -1);- }- incomplete = 1;- break;- }-- /* Decode the leading octet. */-- value = (octet & 0x80) == 0x00 ? octet & 0x7F :- (octet & 0xE0) == 0xC0 ? octet & 0x1F :- (octet & 0xF0) == 0xE0 ? octet & 0x0F :- (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;-- /* Check and decode the trailing octets. */-- for (k = 1; k < width; k ++)- {- octet = parser->raw_buffer.pointer[k];-- /* Check if the octet is valid. */-- if ((octet & 0xC0) != 0x80)- return yaml_parser_set_reader_error(parser,- "invalid trailing UTF-8 octet",- parser->offset+k, octet);-- /* Decode the octet. */-- value = (value << 6) + (octet & 0x3F);- }-- /* Check the length of the sequence against the value. */-- if (!((width == 1) ||- (width == 2 && value >= 0x80) ||- (width == 3 && value >= 0x800) ||- (width == 4 && value >= 0x10000)))- return yaml_parser_set_reader_error(parser,- "invalid length of a UTF-8 sequence",- parser->offset, -1);-- /* Check the range of the value. */-- if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF)- return yaml_parser_set_reader_error(parser,- "invalid Unicode character",- parser->offset, value);-- break;-- case YAML_UTF16LE_ENCODING:- case YAML_UTF16BE_ENCODING:-- low = (parser->encoding == YAML_UTF16LE_ENCODING ? 0 : 1);- high = (parser->encoding == YAML_UTF16LE_ENCODING ? 1 : 0);-- /*- * The UTF-16 encoding is not as simple as one might- * naively think. Check RFC 2781- * (http://www.ietf.org/rfc/rfc2781.txt).- *- * Normally, two subsequent bytes describe a Unicode- * character. However a special technique (called a- * surrogate pair) is used for specifying character- * values larger than 0xFFFF.- *- * A surrogate pair consists of two pseudo-characters:- * high surrogate area (0xD800-0xDBFF)- * low surrogate area (0xDC00-0xDFFF)- *- * The following formulas are used for decoding- * and encoding characters using surrogate pairs:- *- * U = U' + 0x10000 (0x01 00 00 <= U <= 0x10 FF FF)- * U' = yyyyyyyyyyxxxxxxxxxx (0 <= U' <= 0x0F FF FF)- * W1 = 110110yyyyyyyyyy- * W2 = 110111xxxxxxxxxx- *- * where U is the character value, W1 is the high surrogate- * area, W2 is the low surrogate area.- */-- /* Check for incomplete UTF-16 character. */-- if (raw_unread < 2) {- if (parser->eof) {- return yaml_parser_set_reader_error(parser,- "incomplete UTF-16 character",- parser->offset, -1);- }- incomplete = 1;- break;- }-- /* Get the character. */-- value = parser->raw_buffer.pointer[low]- + (parser->raw_buffer.pointer[high] << 8);-- /* Check for unexpected low surrogate area. */-- if ((value & 0xFC00) == 0xDC00)- return yaml_parser_set_reader_error(parser,- "unexpected low surrogate area",- parser->offset, value);-- /* Check for a high surrogate area. */-- if ((value & 0xFC00) == 0xD800) {-- width = 4;-- /* Check for incomplete surrogate pair. */-- if (raw_unread < 4) {- if (parser->eof) {- return yaml_parser_set_reader_error(parser,- "incomplete UTF-16 surrogate pair",- parser->offset, -1);- }- incomplete = 1;- break;- }-- /* Get the next character. */-- value2 = parser->raw_buffer.pointer[low+2]- + (parser->raw_buffer.pointer[high+2] << 8);-- /* Check for a low surrogate area. */-- if ((value2 & 0xFC00) != 0xDC00)- return yaml_parser_set_reader_error(parser,- "expected low surrogate area",- parser->offset+2, value2);-- /* Generate the value of the surrogate pair. */-- value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF);- }-- else {- width = 2;- }-- break;-- default:- assert(1); /* Impossible. */- }-- /* Check if the raw buffer contains enough bytes to form a character. */-- if (incomplete) break;-- /*- * Check if the character is in the allowed range:- * #x9 | #xA | #xD | [#x20-#x7E] (8 bit)- * | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD] (16 bit)- * | [#x10000-#x10FFFF] (32 bit)- */-- if (! (value == 0x09 || value == 0x0A || value == 0x0D- || (value >= 0x20 && value <= 0x7E)- || (value == 0x85) || (value >= 0xA0 && value <= 0xD7FF)- || (value >= 0xE000 && value <= 0xFFFD)- || (value >= 0x10000 && value <= 0x10FFFF)))- return yaml_parser_set_reader_error(parser,- "control characters are not allowed",- parser->offset, value);-- /* Move the raw pointers. */-- parser->raw_buffer.pointer += width;- parser->offset += width;-- /* Finally put the character into the buffer. */-- /* 0000 0000-0000 007F -> 0xxxxxxx */- if (value <= 0x7F) {- *(parser->buffer.last++) = value;- }- /* 0000 0080-0000 07FF -> 110xxxxx 10xxxxxx */- else if (value <= 0x7FF) {- *(parser->buffer.last++) = 0xC0 + (value >> 6);- *(parser->buffer.last++) = 0x80 + (value & 0x3F);- }- /* 0000 0800-0000 FFFF -> 1110xxxx 10xxxxxx 10xxxxxx */- else if (value <= 0xFFFF) {- *(parser->buffer.last++) = 0xE0 + (value >> 12);- *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);- *(parser->buffer.last++) = 0x80 + (value & 0x3F);- }- /* 0001 0000-0010 FFFF -> 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */- else {- *(parser->buffer.last++) = 0xF0 + (value >> 18);- *(parser->buffer.last++) = 0x80 + ((value >> 12) & 0x3F);- *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);- *(parser->buffer.last++) = 0x80 + (value & 0x3F);- }-- parser->unread ++;- }-- /* On EOF, put NUL into the buffer and return. */-- if (parser->eof) {- *(parser->buffer.last++) = '\0';- parser->unread ++;- return 1;- }-- }-- if (parser->offset >= MAX_FILE_SIZE) {- return yaml_parser_set_reader_error(parser, "input is too long",- parser->offset, -1);- }-- return 1;-}
− libyaml_src/scanner.c
@@ -1,3598 +0,0 @@--/*- * Introduction- * ************- *- * The following notes assume that you are familiar with the YAML specification- * (http://yaml.org/spec/cvs/current.html). We mostly follow it, although in- * some cases we are less restrictive that it requires.- *- * The process of transforming a YAML stream into a sequence of events is- * divided on two steps: Scanning and Parsing.- *- * The Scanner transforms the input stream into a sequence of tokens, while the- * parser transform the sequence of tokens produced by the Scanner into a- * sequence of parsing events.- *- * The Scanner is rather clever and complicated. The Parser, on the contrary,- * is a straightforward implementation of a recursive-descendant parser (or,- * LL(1) parser, as it is usually called).- *- * Actually there are two issues of Scanning that might be called "clever", the- * rest is quite straightforward. The issues are "block collection start" and- * "simple keys". Both issues are explained below in details.- *- * Here the Scanning step is explained and implemented. We start with the list- * of all the tokens produced by the Scanner together with short descriptions.- *- * Now, tokens:- *- * STREAM-START(encoding) # The stream start.- * STREAM-END # The stream end.- * VERSION-DIRECTIVE(major,minor) # The '%YAML' directive.- * TAG-DIRECTIVE(handle,prefix) # The '%TAG' directive.- * DOCUMENT-START # '---'- * DOCUMENT-END # '...'- * BLOCK-SEQUENCE-START # Indentation increase denoting a block- * BLOCK-MAPPING-START # sequence or a block mapping.- * BLOCK-END # Indentation decrease.- * FLOW-SEQUENCE-START # '['- * FLOW-SEQUENCE-END # ']'- * FLOW-MAPPING-START # '{'- * FLOW-MAPPING-END # '}'- * BLOCK-ENTRY # '-'- * FLOW-ENTRY # ','- * KEY # '?' or nothing (simple keys).- * VALUE # ':'- * ALIAS(anchor) # '*anchor'- * ANCHOR(anchor) # '&anchor'- * TAG(handle,suffix) # '!handle!suffix'- * SCALAR(value,style) # A scalar.- *- * The following two tokens are "virtual" tokens denoting the beginning and the- * end of the stream:- *- * STREAM-START(encoding)- * STREAM-END- *- * We pass the information about the input stream encoding with the- * STREAM-START token.- *- * The next two tokens are responsible for tags:- *- * VERSION-DIRECTIVE(major,minor)- * TAG-DIRECTIVE(handle,prefix)- *- * Example:- *- * %YAML 1.1- * %TAG ! !foo- * %TAG !yaml! tag:yaml.org,2002:- * ---- *- * The corresponding sequence of tokens:- *- * STREAM-START(utf-8)- * VERSION-DIRECTIVE(1,1)- * TAG-DIRECTIVE("!","!foo")- * TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:")- * DOCUMENT-START- * STREAM-END- *- * Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole- * line.- *- * The document start and end indicators are represented by:- *- * DOCUMENT-START- * DOCUMENT-END- *- * Note that if a YAML stream contains an implicit document (without '---'- * and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be- * produced.- *- * In the following examples, we present whole documents together with the- * produced tokens.- *- * 1. An implicit document:- *- * 'a scalar'- *- * Tokens:- *- * STREAM-START(utf-8)- * SCALAR("a scalar",single-quoted)- * STREAM-END- *- * 2. An explicit document:- *- * ---- * 'a scalar'- * ...- *- * Tokens:- *- * STREAM-START(utf-8)- * DOCUMENT-START- * SCALAR("a scalar",single-quoted)- * DOCUMENT-END- * STREAM-END- *- * 3. Several documents in a stream:- *- * 'a scalar'- * ---- * 'another scalar'- * ---- * 'yet another scalar'- *- * Tokens:- *- * STREAM-START(utf-8)- * SCALAR("a scalar",single-quoted)- * DOCUMENT-START- * SCALAR("another scalar",single-quoted)- * DOCUMENT-START- * SCALAR("yet another scalar",single-quoted)- * STREAM-END- *- * We have already introduced the SCALAR token above. The following tokens are- * used to describe aliases, anchors, tag, and scalars:- *- * ALIAS(anchor)- * ANCHOR(anchor)- * TAG(handle,suffix)- * SCALAR(value,style)- *- * The following series of examples illustrate the usage of these tokens:- *- * 1. A recursive sequence:- *- * &A [ *A ]- *- * Tokens:- *- * STREAM-START(utf-8)- * ANCHOR("A")- * FLOW-SEQUENCE-START- * ALIAS("A")- * FLOW-SEQUENCE-END- * STREAM-END- *- * 2. A tagged scalar:- *- * !!float "3.14" # A good approximation.- *- * Tokens:- *- * STREAM-START(utf-8)- * TAG("!!","float")- * SCALAR("3.14",double-quoted)- * STREAM-END- *- * 3. Various scalar styles:- *- * --- # Implicit empty plain scalars do not produce tokens.- * --- a plain scalar- * --- 'a single-quoted scalar'- * --- "a double-quoted scalar"- * --- |-- * a literal scalar- * --- >-- * a folded- * scalar- *- * Tokens:- *- * STREAM-START(utf-8)- * DOCUMENT-START- * DOCUMENT-START- * SCALAR("a plain scalar",plain)- * DOCUMENT-START- * SCALAR("a single-quoted scalar",single-quoted)- * DOCUMENT-START- * SCALAR("a double-quoted scalar",double-quoted)- * DOCUMENT-START- * SCALAR("a literal scalar",literal)- * DOCUMENT-START- * SCALAR("a folded scalar",folded)- * STREAM-END- *- * Now it's time to review collection-related tokens. We will start with- * flow collections:- *- * FLOW-SEQUENCE-START- * FLOW-SEQUENCE-END- * FLOW-MAPPING-START- * FLOW-MAPPING-END- * FLOW-ENTRY- * KEY- * VALUE- *- * The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and- * FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}'- * correspondingly. FLOW-ENTRY represent the ',' indicator. Finally the- * indicators '?' and ':', which are used for denoting mapping keys and values,- * are represented by the KEY and VALUE tokens.- *- * The following examples show flow collections:- *- * 1. A flow sequence:- *- * [item 1, item 2, item 3]- *- * Tokens:- *- * STREAM-START(utf-8)- * FLOW-SEQUENCE-START- * SCALAR("item 1",plain)- * FLOW-ENTRY- * SCALAR("item 2",plain)- * FLOW-ENTRY- * SCALAR("item 3",plain)- * FLOW-SEQUENCE-END- * STREAM-END- *- * 2. A flow mapping:- *- * {- * a simple key: a value, # Note that the KEY token is produced.- * ? a complex key: another value,- * }- *- * Tokens:- *- * STREAM-START(utf-8)- * FLOW-MAPPING-START- * KEY- * SCALAR("a simple key",plain)- * VALUE- * SCALAR("a value",plain)- * FLOW-ENTRY- * KEY- * SCALAR("a complex key",plain)- * VALUE- * SCALAR("another value",plain)- * FLOW-ENTRY- * FLOW-MAPPING-END- * STREAM-END- *- * A simple key is a key which is not denoted by the '?' indicator. Note that- * the Scanner still produce the KEY token whenever it encounters a simple key.- *- * For scanning block collections, the following tokens are used (note that we- * repeat KEY and VALUE here):- *- * BLOCK-SEQUENCE-START- * BLOCK-MAPPING-START- * BLOCK-END- * BLOCK-ENTRY- * KEY- * VALUE- *- * The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation- * increase that precedes a block collection (cf. the INDENT token in Python).- * The token BLOCK-END denote indentation decrease that ends a block collection- * (cf. the DEDENT token in Python). However YAML has some syntax pecularities- * that makes detections of these tokens more complex.- *- * The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators- * '-', '?', and ':' correspondingly.- *- * The following examples show how the tokens BLOCK-SEQUENCE-START,- * BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner:- *- * 1. Block sequences:- *- * - item 1- * - item 2- * -- * - item 3.1- * - item 3.2- * -- * key 1: value 1- * key 2: value 2- *- * Tokens:- *- * STREAM-START(utf-8)- * BLOCK-SEQUENCE-START- * BLOCK-ENTRY- * SCALAR("item 1",plain)- * BLOCK-ENTRY- * SCALAR("item 2",plain)- * BLOCK-ENTRY- * BLOCK-SEQUENCE-START- * BLOCK-ENTRY- * SCALAR("item 3.1",plain)- * BLOCK-ENTRY- * SCALAR("item 3.2",plain)- * BLOCK-END- * BLOCK-ENTRY- * BLOCK-MAPPING-START- * KEY- * SCALAR("key 1",plain)- * VALUE- * SCALAR("value 1",plain)- * KEY- * SCALAR("key 2",plain)- * VALUE- * SCALAR("value 2",plain)- * BLOCK-END- * BLOCK-END- * STREAM-END- *- * 2. Block mappings:- *- * a simple key: a value # The KEY token is produced here.- * ? a complex key- * : another value- * a mapping:- * key 1: value 1- * key 2: value 2- * a sequence:- * - item 1- * - item 2- *- * Tokens:- *- * STREAM-START(utf-8)- * BLOCK-MAPPING-START- * KEY- * SCALAR("a simple key",plain)- * VALUE- * SCALAR("a value",plain)- * KEY- * SCALAR("a complex key",plain)- * VALUE- * SCALAR("another value",plain)- * KEY- * SCALAR("a mapping",plain)- * VALUE- * BLOCK-MAPPING-START- * KEY- * SCALAR("key 1",plain)- * VALUE- * SCALAR("value 1",plain)- * KEY- * SCALAR("key 2",plain)- * VALUE- * SCALAR("value 2",plain)- * BLOCK-END- * KEY- * SCALAR("a sequence",plain)- * VALUE- * BLOCK-SEQUENCE-START- * BLOCK-ENTRY- * SCALAR("item 1",plain)- * BLOCK-ENTRY- * SCALAR("item 2",plain)- * BLOCK-END- * BLOCK-END- * STREAM-END- *- * YAML does not always require to start a new block collection from a new- * line. If the current line contains only '-', '?', and ':' indicators, a new- * block collection may start at the current line. The following examples- * illustrate this case:- *- * 1. Collections in a sequence:- *- * - - item 1- * - item 2- * - key 1: value 1- * key 2: value 2- * - ? complex key- * : complex value- *- * Tokens:- *- * STREAM-START(utf-8)- * BLOCK-SEQUENCE-START- * BLOCK-ENTRY- * BLOCK-SEQUENCE-START- * BLOCK-ENTRY- * SCALAR("item 1",plain)- * BLOCK-ENTRY- * SCALAR("item 2",plain)- * BLOCK-END- * BLOCK-ENTRY- * BLOCK-MAPPING-START- * KEY- * SCALAR("key 1",plain)- * VALUE- * SCALAR("value 1",plain)- * KEY- * SCALAR("key 2",plain)- * VALUE- * SCALAR("value 2",plain)- * BLOCK-END- * BLOCK-ENTRY- * BLOCK-MAPPING-START- * KEY- * SCALAR("complex key")- * VALUE- * SCALAR("complex value")- * BLOCK-END- * BLOCK-END- * STREAM-END- *- * 2. Collections in a mapping:- *- * ? a sequence- * : - item 1- * - item 2- * ? a mapping- * : key 1: value 1- * key 2: value 2- *- * Tokens:- *- * STREAM-START(utf-8)- * BLOCK-MAPPING-START- * KEY- * SCALAR("a sequence",plain)- * VALUE- * BLOCK-SEQUENCE-START- * BLOCK-ENTRY- * SCALAR("item 1",plain)- * BLOCK-ENTRY- * SCALAR("item 2",plain)- * BLOCK-END- * KEY- * SCALAR("a mapping",plain)- * VALUE- * BLOCK-MAPPING-START- * KEY- * SCALAR("key 1",plain)- * VALUE- * SCALAR("value 1",plain)- * KEY- * SCALAR("key 2",plain)- * VALUE- * SCALAR("value 2",plain)- * BLOCK-END- * BLOCK-END- * STREAM-END- *- * YAML also permits non-indented sequences if they are included into a block- * mapping. In this case, the token BLOCK-SEQUENCE-START is not produced:- *- * key:- * - item 1 # BLOCK-SEQUENCE-START is NOT produced here.- * - item 2- *- * Tokens:- *- * STREAM-START(utf-8)- * BLOCK-MAPPING-START- * KEY- * SCALAR("key",plain)- * VALUE- * BLOCK-ENTRY- * SCALAR("item 1",plain)- * BLOCK-ENTRY- * SCALAR("item 2",plain)- * BLOCK-END- */--#include "yaml_private.h"--/*- * Ensure that the buffer contains the required number of characters.- * Return 1 on success, 0 on failure (reader error or memory error).- */--#define CACHE(parser,length) \- (parser->unread >= (length) \- ? 1 \- : yaml_parser_update_buffer(parser, (length)))--/*- * Advance the buffer pointer.- */--#define SKIP(parser) \- (parser->mark.index ++, \- parser->mark.column ++, \- parser->unread --, \- parser->buffer.pointer += WIDTH(parser->buffer))--#define SKIP_LINE(parser) \- (IS_CRLF(parser->buffer) ? \- (parser->mark.index += 2, \- parser->mark.column = 0, \- parser->mark.line ++, \- parser->unread -= 2, \- parser->buffer.pointer += 2) : \- IS_BREAK(parser->buffer) ? \- (parser->mark.index ++, \- parser->mark.column = 0, \- parser->mark.line ++, \- parser->unread --, \- parser->buffer.pointer += WIDTH(parser->buffer)) : 0)--/*- * Copy a character to a string buffer and advance pointers.- */--#define READ(parser,string) \- (STRING_EXTEND(parser,string) ? \- (COPY(string,parser->buffer), \- parser->mark.index ++, \- parser->mark.column ++, \- parser->unread --, \- 1) : 0)--/*- * Copy a line break character to a string buffer and advance pointers.- */--#define READ_LINE(parser,string) \- (STRING_EXTEND(parser,string) ? \- (((CHECK_AT(parser->buffer,'\r',0) \- && CHECK_AT(parser->buffer,'\n',1)) ? /* CR LF -> LF */ \- (*((string).pointer++) = (yaml_char_t) '\n', \- parser->buffer.pointer += 2, \- parser->mark.index += 2, \- parser->mark.column = 0, \- parser->mark.line ++, \- parser->unread -= 2) : \- (CHECK_AT(parser->buffer,'\r',0) \- || CHECK_AT(parser->buffer,'\n',0)) ? /* CR|LF -> LF */ \- (*((string).pointer++) = (yaml_char_t) '\n', \- parser->buffer.pointer ++, \- parser->mark.index ++, \- parser->mark.column = 0, \- parser->mark.line ++, \- parser->unread --) : \- (CHECK_AT(parser->buffer,'\xC2',0) \- && CHECK_AT(parser->buffer,'\x85',1)) ? /* NEL -> LF */ \- (*((string).pointer++) = (yaml_char_t) '\n', \- parser->buffer.pointer += 2, \- parser->mark.index ++, \- parser->mark.column = 0, \- parser->mark.line ++, \- parser->unread --) : \- (CHECK_AT(parser->buffer,'\xE2',0) && \- CHECK_AT(parser->buffer,'\x80',1) && \- (CHECK_AT(parser->buffer,'\xA8',2) || \- CHECK_AT(parser->buffer,'\xA9',2))) ? /* LS|PS -> LS|PS */ \- (*((string).pointer++) = *(parser->buffer.pointer++), \- *((string).pointer++) = *(parser->buffer.pointer++), \- *((string).pointer++) = *(parser->buffer.pointer++), \- parser->mark.index ++, \- parser->mark.column = 0, \- parser->mark.line ++, \- parser->unread --) : 0), \- 1) : 0)--/*- * Public API declarations.- */--YAML_DECLARE(int)-yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token);--/*- * Error handling.- */--static int-yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context,- yaml_mark_t context_mark, const char *problem);--/*- * High-level token API.- */--YAML_DECLARE(int)-yaml_parser_fetch_more_tokens(yaml_parser_t *parser);--static int-yaml_parser_fetch_next_token(yaml_parser_t *parser);--/*- * Potential simple keys.- */--static int-yaml_parser_stale_simple_keys(yaml_parser_t *parser);--static int-yaml_parser_save_simple_key(yaml_parser_t *parser);--static int-yaml_parser_remove_simple_key(yaml_parser_t *parser);--static int-yaml_parser_increase_flow_level(yaml_parser_t *parser);--static int-yaml_parser_decrease_flow_level(yaml_parser_t *parser);--/*- * Indentation treatment.- */--static int-yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column,- ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark);--static int-yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column);--/*- * Token fetchers.- */--static int-yaml_parser_fetch_stream_start(yaml_parser_t *parser);--static int-yaml_parser_fetch_stream_end(yaml_parser_t *parser);--static int-yaml_parser_fetch_directive(yaml_parser_t *parser);--static int-yaml_parser_fetch_document_indicator(yaml_parser_t *parser,- yaml_token_type_t type);--static int-yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser,- yaml_token_type_t type);--static int-yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser,- yaml_token_type_t type);--static int-yaml_parser_fetch_flow_entry(yaml_parser_t *parser);--static int-yaml_parser_fetch_block_entry(yaml_parser_t *parser);--static int-yaml_parser_fetch_key(yaml_parser_t *parser);--static int-yaml_parser_fetch_value(yaml_parser_t *parser);--static int-yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type);--static int-yaml_parser_fetch_tag(yaml_parser_t *parser);--static int-yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal);--static int-yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single);--static int-yaml_parser_fetch_plain_scalar(yaml_parser_t *parser);--/*- * Token scanners.- */--static int-yaml_parser_scan_to_next_token(yaml_parser_t *parser);--static int-yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token);--static int-yaml_parser_scan_directive_name(yaml_parser_t *parser,- yaml_mark_t start_mark, yaml_char_t **name);--static int-yaml_parser_scan_version_directive_value(yaml_parser_t *parser,- yaml_mark_t start_mark, int *major, int *minor);--static int-yaml_parser_scan_version_directive_number(yaml_parser_t *parser,- yaml_mark_t start_mark, int *number);--static int-yaml_parser_scan_tag_directive_value(yaml_parser_t *parser,- yaml_mark_t mark, yaml_char_t **handle, yaml_char_t **prefix);--static int-yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token,- yaml_token_type_t type);--static int-yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token);--static int-yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive,- yaml_mark_t start_mark, yaml_char_t **handle);--static int-yaml_parser_scan_tag_uri(yaml_parser_t *parser, int uri_char, int directive,- yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri);--static int-yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive,- yaml_mark_t start_mark, yaml_string_t *string);--static int-yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token,- int literal);--static int-yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser,- int *indent, yaml_string_t *breaks,- yaml_mark_t start_mark, yaml_mark_t *end_mark);--static int-yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token,- int single);--static int-yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token);--/*- * Get the next token.- */--YAML_DECLARE(int)-yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token)-{- assert(parser); /* Non-NULL parser object is expected. */- assert(token); /* Non-NULL token object is expected. */-- /* Erase the token object. */-- memset(token, 0, sizeof(yaml_token_t));-- /* No tokens after STREAM-END or error. */-- if (parser->stream_end_produced || parser->error) {- return 1;- }-- /* Ensure that the tokens queue contains enough tokens. */-- if (!parser->token_available) {- if (!yaml_parser_fetch_more_tokens(parser))- return 0;- }-- /* Fetch the next token from the queue. */-- *token = DEQUEUE(parser, parser->tokens);- parser->token_available = 0;- parser->tokens_parsed ++;-- if (token->type == YAML_STREAM_END_TOKEN) {- parser->stream_end_produced = 1;- }-- return 1;-}--/*- * Set the scanner error and return 0.- */--static int-yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context,- yaml_mark_t context_mark, const char *problem)-{- parser->error = YAML_SCANNER_ERROR;- parser->context = context;- parser->context_mark = context_mark;- parser->problem = problem;- parser->problem_mark = parser->mark;-- return 0;-}--/*- * Ensure that the tokens queue contains at least one token which can be- * returned to the Parser.- */--YAML_DECLARE(int)-yaml_parser_fetch_more_tokens(yaml_parser_t *parser)-{- int need_more_tokens;-- /* While we need more tokens to fetch, do it. */-- while (1)- {- /*- * Check if we really need to fetch more tokens.- */-- need_more_tokens = 0;-- if (parser->tokens.head == parser->tokens.tail)- {- /* Queue is empty. */-- need_more_tokens = 1;- }- else- {- yaml_simple_key_t *simple_key;-- /* Check if any potential simple key may occupy the head position. */-- if (!yaml_parser_stale_simple_keys(parser))- return 0;-- for (simple_key = parser->simple_keys.start;- simple_key != parser->simple_keys.top; simple_key++) {- if (simple_key->possible- && simple_key->token_number == parser->tokens_parsed) {- need_more_tokens = 1;- break;- }- }- }-- /* We are finished. */-- if (!need_more_tokens)- break;-- /* Fetch the next token. */-- if (!yaml_parser_fetch_next_token(parser))- return 0;- }-- parser->token_available = 1;-- return 1;-}--/*- * The dispatcher for token fetchers.- */--static int-yaml_parser_fetch_next_token(yaml_parser_t *parser)-{- /* Ensure that the buffer is initialized. */-- if (!CACHE(parser, 1))- return 0;-- /* Check if we just started scanning. Fetch STREAM-START then. */-- if (!parser->stream_start_produced)- return yaml_parser_fetch_stream_start(parser);-- /* Eat whitespaces and comments until we reach the next token. */-- if (!yaml_parser_scan_to_next_token(parser))- return 0;-- /* Remove obsolete potential simple keys. */-- if (!yaml_parser_stale_simple_keys(parser))- return 0;-- /* Check the indentation level against the current column. */-- if (!yaml_parser_unroll_indent(parser, parser->mark.column))- return 0;-- /*- * Ensure that the buffer contains at least 4 characters. 4 is the length- * of the longest indicators ('--- ' and '... ').- */-- if (!CACHE(parser, 4))- return 0;-- /* Is it the end of the stream? */-- if (IS_Z(parser->buffer))- return yaml_parser_fetch_stream_end(parser);-- /* Is it a directive? */-- if (parser->mark.column == 0 && CHECK(parser->buffer, '%'))- return yaml_parser_fetch_directive(parser);-- /* Is it the document start indicator? */-- if (parser->mark.column == 0- && CHECK_AT(parser->buffer, '-', 0)- && CHECK_AT(parser->buffer, '-', 1)- && CHECK_AT(parser->buffer, '-', 2)- && IS_BLANKZ_AT(parser->buffer, 3))- return yaml_parser_fetch_document_indicator(parser,- YAML_DOCUMENT_START_TOKEN);-- /* Is it the document end indicator? */-- if (parser->mark.column == 0- && CHECK_AT(parser->buffer, '.', 0)- && CHECK_AT(parser->buffer, '.', 1)- && CHECK_AT(parser->buffer, '.', 2)- && IS_BLANKZ_AT(parser->buffer, 3))- return yaml_parser_fetch_document_indicator(parser,- YAML_DOCUMENT_END_TOKEN);-- /* Is it the flow sequence start indicator? */-- if (CHECK(parser->buffer, '['))- return yaml_parser_fetch_flow_collection_start(parser,- YAML_FLOW_SEQUENCE_START_TOKEN);-- /* Is it the flow mapping start indicator? */-- if (CHECK(parser->buffer, '{'))- return yaml_parser_fetch_flow_collection_start(parser,- YAML_FLOW_MAPPING_START_TOKEN);-- /* Is it the flow sequence end indicator? */-- if (CHECK(parser->buffer, ']'))- return yaml_parser_fetch_flow_collection_end(parser,- YAML_FLOW_SEQUENCE_END_TOKEN);-- /* Is it the flow mapping end indicator? */-- if (CHECK(parser->buffer, '}'))- return yaml_parser_fetch_flow_collection_end(parser,- YAML_FLOW_MAPPING_END_TOKEN);-- /* Is it the flow entry indicator? */-- if (CHECK(parser->buffer, ','))- return yaml_parser_fetch_flow_entry(parser);-- /* Is it the block entry indicator? */-- if (CHECK(parser->buffer, '-') && IS_BLANKZ_AT(parser->buffer, 1))- return yaml_parser_fetch_block_entry(parser);-- /* Is it the key indicator? */-- if (CHECK(parser->buffer, '?')- && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1)))- return yaml_parser_fetch_key(parser);-- /* Is it the value indicator? */-- if (CHECK(parser->buffer, ':')- && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1)))- return yaml_parser_fetch_value(parser);-- /* Is it an alias? */-- if (CHECK(parser->buffer, '*'))- return yaml_parser_fetch_anchor(parser, YAML_ALIAS_TOKEN);-- /* Is it an anchor? */-- if (CHECK(parser->buffer, '&'))- return yaml_parser_fetch_anchor(parser, YAML_ANCHOR_TOKEN);-- /* Is it a tag? */-- if (CHECK(parser->buffer, '!'))- return yaml_parser_fetch_tag(parser);-- /* Is it a literal scalar? */-- if (CHECK(parser->buffer, '|') && !parser->flow_level)- return yaml_parser_fetch_block_scalar(parser, 1);-- /* Is it a folded scalar? */-- if (CHECK(parser->buffer, '>') && !parser->flow_level)- return yaml_parser_fetch_block_scalar(parser, 0);-- /* Is it a single-quoted scalar? */-- if (CHECK(parser->buffer, '\''))- return yaml_parser_fetch_flow_scalar(parser, 1);-- /* Is it a double-quoted scalar? */-- if (CHECK(parser->buffer, '"'))- return yaml_parser_fetch_flow_scalar(parser, 0);-- /*- * Is it a plain scalar?- *- * A plain scalar may start with any non-blank characters except- *- * '-', '?', ':', ',', '[', ']', '{', '}',- * '#', '&', '*', '!', '|', '>', '\'', '\"',- * '%', '@', '`'.- *- * In the block context (and, for the '-' indicator, in the flow context- * too), it may also start with the characters- *- * '-', '?', ':'- *- * if it is followed by a non-space character.- *- * The last rule is more restrictive than the specification requires.- */-- if (!(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '-')- || CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':')- || CHECK(parser->buffer, ',') || CHECK(parser->buffer, '[')- || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{')- || CHECK(parser->buffer, '}') || CHECK(parser->buffer, '#')- || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '*')- || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '|')- || CHECK(parser->buffer, '>') || CHECK(parser->buffer, '\'')- || CHECK(parser->buffer, '"') || CHECK(parser->buffer, '%')- || CHECK(parser->buffer, '@') || CHECK(parser->buffer, '`')) ||- (CHECK(parser->buffer, '-') && !IS_BLANK_AT(parser->buffer, 1)) ||- (!parser->flow_level &&- (CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':'))- && !IS_BLANKZ_AT(parser->buffer, 1)))- return yaml_parser_fetch_plain_scalar(parser);-- /*- * If we don't determine the token type so far, it is an error.- */-- return yaml_parser_set_scanner_error(parser,- "while scanning for the next token", parser->mark,- "found character that cannot start any token");-}--/*- * Check the list of potential simple keys and remove the positions that- * cannot contain simple keys anymore.- */--static int-yaml_parser_stale_simple_keys(yaml_parser_t *parser)-{- yaml_simple_key_t *simple_key;-- /* Check for a potential simple key for each flow level. */-- for (simple_key = parser->simple_keys.start;- simple_key != parser->simple_keys.top; simple_key ++)- {- /*- * The specification requires that a simple key- *- * - is limited to a single line,- * - is shorter than 1024 characters.- */-- if (simple_key->possible- && (simple_key->mark.line < parser->mark.line- || simple_key->mark.index+1024 < parser->mark.index)) {-- /* Check if the potential simple key to be removed is required. */-- if (simple_key->required) {- return yaml_parser_set_scanner_error(parser,- "while scanning a simple key", simple_key->mark,- "could not find expected ':'");- }-- simple_key->possible = 0;- }- }-- return 1;-}--/*- * Check if a simple key may start at the current position and add it if- * needed.- */--static int-yaml_parser_save_simple_key(yaml_parser_t *parser)-{- /*- * A simple key is required at the current position if the scanner is in- * the block context and the current column coincides with the indentation- * level.- */-- int required = (!parser->flow_level- && parser->indent == (ptrdiff_t)parser->mark.column);-- /*- * If the current position may start a simple key, save it.- */-- if (parser->simple_key_allowed)- {- yaml_simple_key_t simple_key;- simple_key.possible = 1;- simple_key.required = required;- simple_key.token_number =- parser->tokens_parsed + (parser->tokens.tail - parser->tokens.head);- simple_key.mark = parser->mark;-- if (!yaml_parser_remove_simple_key(parser)) return 0;-- *(parser->simple_keys.top-1) = simple_key;- }-- return 1;-}--/*- * Remove a potential simple key at the current flow level.- */--static int-yaml_parser_remove_simple_key(yaml_parser_t *parser)-{- yaml_simple_key_t *simple_key = parser->simple_keys.top-1;-- if (simple_key->possible)- {- /* If the key is required, it is an error. */-- if (simple_key->required) {- return yaml_parser_set_scanner_error(parser,- "while scanning a simple key", simple_key->mark,- "could not find expected ':'");- }- }-- /* Remove the key from the stack. */-- simple_key->possible = 0;-- return 1;-}--/*- * Increase the flow level and resize the simple key list if needed.- */--static int-yaml_parser_increase_flow_level(yaml_parser_t *parser)-{- yaml_simple_key_t empty_simple_key = { 0, 0, 0, { 0, 0, 0 } };-- /* Reset the simple key on the next level. */-- if (!PUSH(parser, parser->simple_keys, empty_simple_key))- return 0;-- /* Increase the flow level. */-- if (parser->flow_level == INT_MAX) {- parser->error = YAML_MEMORY_ERROR;- return 0;- }-- parser->flow_level++;-- return 1;-}--/*- * Decrease the flow level.- */--static int-yaml_parser_decrease_flow_level(yaml_parser_t *parser)-{- if (parser->flow_level) {- parser->flow_level --;- (void)POP(parser, parser->simple_keys);- }-- return 1;-}--/*- * Push the current indentation level to the stack and set the new level- * the current column is greater than the indentation level. In this case,- * append or insert the specified token into the token queue.- *- */--static int-yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column,- ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark)-{- yaml_token_t token;-- /* In the flow context, do nothing. */-- if (parser->flow_level)- return 1;-- if (parser->indent < column)- {- /*- * Push the current indentation level to the stack and set the new- * indentation level.- */-- if (!PUSH(parser, parser->indents, parser->indent))- return 0;-- if (column > INT_MAX) {- parser->error = YAML_MEMORY_ERROR;- return 0;- }-- parser->indent = column;-- /* Create a token and insert it into the queue. */-- TOKEN_INIT(token, type, mark, mark);-- if (number == -1) {- if (!ENQUEUE(parser, parser->tokens, token))- return 0;- }- else {- if (!QUEUE_INSERT(parser,- parser->tokens, number - parser->tokens_parsed, token))- return 0;- }- }-- return 1;-}--/*- * Pop indentation levels from the indents stack until the current level- * becomes less or equal to the column. For each indentation level, append- * the BLOCK-END token.- */---static int-yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column)-{- yaml_token_t token;-- /* In the flow context, do nothing. */-- if (parser->flow_level)- return 1;-- /* Loop through the indentation levels in the stack. */-- while (parser->indent > column)- {- /* Create a token and append it to the queue. */-- TOKEN_INIT(token, YAML_BLOCK_END_TOKEN, parser->mark, parser->mark);-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- /* Pop the indentation level. */-- parser->indent = POP(parser, parser->indents);- }-- return 1;-}--/*- * Initialize the scanner and produce the STREAM-START token.- */--static int-yaml_parser_fetch_stream_start(yaml_parser_t *parser)-{- yaml_simple_key_t simple_key = { 0, 0, 0, { 0, 0, 0 } };- yaml_token_t token;-- /* Set the initial indentation. */-- parser->indent = -1;-- /* Initialize the simple key stack. */-- if (!PUSH(parser, parser->simple_keys, simple_key))- return 0;-- /* A simple key is allowed at the beginning of the stream. */-- parser->simple_key_allowed = 1;-- /* We have started. */-- parser->stream_start_produced = 1;-- /* Create the STREAM-START token and append it to the queue. */-- STREAM_START_TOKEN_INIT(token, parser->encoding,- parser->mark, parser->mark);-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- return 1;-}--/*- * Produce the STREAM-END token and shut down the scanner.- */--static int-yaml_parser_fetch_stream_end(yaml_parser_t *parser)-{- yaml_token_t token;-- /* Force new line. */-- if (parser->mark.column != 0) {- parser->mark.column = 0;- parser->mark.line ++;- }-- /* Reset the indentation level. */-- if (!yaml_parser_unroll_indent(parser, -1))- return 0;-- /* Reset simple keys. */-- if (!yaml_parser_remove_simple_key(parser))- return 0;-- parser->simple_key_allowed = 0;-- /* Create the STREAM-END token and append it to the queue. */-- STREAM_END_TOKEN_INIT(token, parser->mark, parser->mark);-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- return 1;-}--/*- * Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token.- */--static int-yaml_parser_fetch_directive(yaml_parser_t *parser)-{- yaml_token_t token;-- /* Reset the indentation level. */-- if (!yaml_parser_unroll_indent(parser, -1))- return 0;-- /* Reset simple keys. */-- if (!yaml_parser_remove_simple_key(parser))- return 0;-- parser->simple_key_allowed = 0;-- /* Create the YAML-DIRECTIVE or TAG-DIRECTIVE token. */-- if (!yaml_parser_scan_directive(parser, &token))- return 0;-- /* Append the token to the queue. */-- if (!ENQUEUE(parser, parser->tokens, token)) {- yaml_token_delete(&token);- return 0;- }-- return 1;-}--/*- * Produce the DOCUMENT-START or DOCUMENT-END token.- */--static int-yaml_parser_fetch_document_indicator(yaml_parser_t *parser,- yaml_token_type_t type)-{- yaml_mark_t start_mark, end_mark;- yaml_token_t token;-- /* Reset the indentation level. */-- if (!yaml_parser_unroll_indent(parser, -1))- return 0;-- /* Reset simple keys. */-- if (!yaml_parser_remove_simple_key(parser))- return 0;-- parser->simple_key_allowed = 0;-- /* Consume the token. */-- start_mark = parser->mark;-- SKIP(parser);- SKIP(parser);- SKIP(parser);-- end_mark = parser->mark;-- /* Create the DOCUMENT-START or DOCUMENT-END token. */-- TOKEN_INIT(token, type, start_mark, end_mark);-- /* Append the token to the queue. */-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- return 1;-}--/*- * Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token.- */--static int-yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser,- yaml_token_type_t type)-{- yaml_mark_t start_mark, end_mark;- yaml_token_t token;-- /* The indicators '[' and '{' may start a simple key. */-- if (!yaml_parser_save_simple_key(parser))- return 0;-- /* Increase the flow level. */-- if (!yaml_parser_increase_flow_level(parser))- return 0;-- /* A simple key may follow the indicators '[' and '{'. */-- parser->simple_key_allowed = 1;-- /* Consume the token. */-- start_mark = parser->mark;- SKIP(parser);- end_mark = parser->mark;-- /* Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token. */-- TOKEN_INIT(token, type, start_mark, end_mark);-- /* Append the token to the queue. */-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- return 1;-}--/*- * Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token.- */--static int-yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser,- yaml_token_type_t type)-{- yaml_mark_t start_mark, end_mark;- yaml_token_t token;-- /* Reset any potential simple key on the current flow level. */-- if (!yaml_parser_remove_simple_key(parser))- return 0;-- /* Decrease the flow level. */-- if (!yaml_parser_decrease_flow_level(parser))- return 0;-- /* No simple keys after the indicators ']' and '}'. */-- parser->simple_key_allowed = 0;-- /* Consume the token. */-- start_mark = parser->mark;- SKIP(parser);- end_mark = parser->mark;-- /* Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token. */-- TOKEN_INIT(token, type, start_mark, end_mark);-- /* Append the token to the queue. */-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- return 1;-}--/*- * Produce the FLOW-ENTRY token.- */--static int-yaml_parser_fetch_flow_entry(yaml_parser_t *parser)-{- yaml_mark_t start_mark, end_mark;- yaml_token_t token;-- /* Reset any potential simple keys on the current flow level. */-- if (!yaml_parser_remove_simple_key(parser))- return 0;-- /* Simple keys are allowed after ','. */-- parser->simple_key_allowed = 1;-- /* Consume the token. */-- start_mark = parser->mark;- SKIP(parser);- end_mark = parser->mark;-- /* Create the FLOW-ENTRY token and append it to the queue. */-- TOKEN_INIT(token, YAML_FLOW_ENTRY_TOKEN, start_mark, end_mark);-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- return 1;-}--/*- * Produce the BLOCK-ENTRY token.- */--static int-yaml_parser_fetch_block_entry(yaml_parser_t *parser)-{- yaml_mark_t start_mark, end_mark;- yaml_token_t token;-- /* Check if the scanner is in the block context. */-- if (!parser->flow_level)- {- /* Check if we are allowed to start a new entry. */-- if (!parser->simple_key_allowed) {- return yaml_parser_set_scanner_error(parser, NULL, parser->mark,- "block sequence entries are not allowed in this context");- }-- /* Add the BLOCK-SEQUENCE-START token if needed. */-- if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,- YAML_BLOCK_SEQUENCE_START_TOKEN, parser->mark))- return 0;- }- else- {- /*- * It is an error for the '-' indicator to occur in the flow context,- * but we let the Parser detect and report about it because the Parser- * is able to point to the context.- */- }-- /* Reset any potential simple keys on the current flow level. */-- if (!yaml_parser_remove_simple_key(parser))- return 0;-- /* Simple keys are allowed after '-'. */-- parser->simple_key_allowed = 1;-- /* Consume the token. */-- start_mark = parser->mark;- SKIP(parser);- end_mark = parser->mark;-- /* Create the BLOCK-ENTRY token and append it to the queue. */-- TOKEN_INIT(token, YAML_BLOCK_ENTRY_TOKEN, start_mark, end_mark);-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- return 1;-}--/*- * Produce the KEY token.- */--static int-yaml_parser_fetch_key(yaml_parser_t *parser)-{- yaml_mark_t start_mark, end_mark;- yaml_token_t token;-- /* In the block context, additional checks are required. */-- if (!parser->flow_level)- {- /* Check if we are allowed to start a new key (not necessary simple). */-- if (!parser->simple_key_allowed) {- return yaml_parser_set_scanner_error(parser, NULL, parser->mark,- "mapping keys are not allowed in this context");- }-- /* Add the BLOCK-MAPPING-START token if needed. */-- if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,- YAML_BLOCK_MAPPING_START_TOKEN, parser->mark))- return 0;- }-- /* Reset any potential simple keys on the current flow level. */-- if (!yaml_parser_remove_simple_key(parser))- return 0;-- /* Simple keys are allowed after '?' in the block context. */-- parser->simple_key_allowed = (!parser->flow_level);-- /* Consume the token. */-- start_mark = parser->mark;- SKIP(parser);- end_mark = parser->mark;-- /* Create the KEY token and append it to the queue. */-- TOKEN_INIT(token, YAML_KEY_TOKEN, start_mark, end_mark);-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- return 1;-}--/*- * Produce the VALUE token.- */--static int-yaml_parser_fetch_value(yaml_parser_t *parser)-{- yaml_mark_t start_mark, end_mark;- yaml_token_t token;- yaml_simple_key_t *simple_key = parser->simple_keys.top-1;-- /* Have we found a simple key? */-- if (simple_key->possible)- {-- /* Create the KEY token and insert it into the queue. */-- TOKEN_INIT(token, YAML_KEY_TOKEN, simple_key->mark, simple_key->mark);-- if (!QUEUE_INSERT(parser, parser->tokens,- simple_key->token_number - parser->tokens_parsed, token))- return 0;-- /* In the block context, we may need to add the BLOCK-MAPPING-START token. */-- if (!yaml_parser_roll_indent(parser, simple_key->mark.column,- simple_key->token_number,- YAML_BLOCK_MAPPING_START_TOKEN, simple_key->mark))- return 0;-- /* Remove the simple key. */-- simple_key->possible = 0;-- /* A simple key cannot follow another simple key. */-- parser->simple_key_allowed = 0;- }- else- {- /* The ':' indicator follows a complex key. */-- /* In the block context, extra checks are required. */-- if (!parser->flow_level)- {- /* Check if we are allowed to start a complex value. */-- if (!parser->simple_key_allowed) {- return yaml_parser_set_scanner_error(parser, NULL, parser->mark,- "mapping values are not allowed in this context");- }-- /* Add the BLOCK-MAPPING-START token if needed. */-- if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,- YAML_BLOCK_MAPPING_START_TOKEN, parser->mark))- return 0;- }-- /* Simple keys after ':' are allowed in the block context. */-- parser->simple_key_allowed = (!parser->flow_level);- }-- /* Consume the token. */-- start_mark = parser->mark;- SKIP(parser);- end_mark = parser->mark;-- /* Create the VALUE token and append it to the queue. */-- TOKEN_INIT(token, YAML_VALUE_TOKEN, start_mark, end_mark);-- if (!ENQUEUE(parser, parser->tokens, token))- return 0;-- return 1;-}--/*- * Produce the ALIAS or ANCHOR token.- */--static int-yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type)-{- yaml_token_t token;-- /* An anchor or an alias could be a simple key. */-- if (!yaml_parser_save_simple_key(parser))- return 0;-- /* A simple key cannot follow an anchor or an alias. */-- parser->simple_key_allowed = 0;-- /* Create the ALIAS or ANCHOR token and append it to the queue. */-- if (!yaml_parser_scan_anchor(parser, &token, type))- return 0;-- if (!ENQUEUE(parser, parser->tokens, token)) {- yaml_token_delete(&token);- return 0;- }- return 1;-}--/*- * Produce the TAG token.- */--static int-yaml_parser_fetch_tag(yaml_parser_t *parser)-{- yaml_token_t token;-- /* A tag could be a simple key. */-- if (!yaml_parser_save_simple_key(parser))- return 0;-- /* A simple key cannot follow a tag. */-- parser->simple_key_allowed = 0;-- /* Create the TAG token and append it to the queue. */-- if (!yaml_parser_scan_tag(parser, &token))- return 0;-- if (!ENQUEUE(parser, parser->tokens, token)) {- yaml_token_delete(&token);- return 0;- }-- return 1;-}--/*- * Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens.- */--static int-yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal)-{- yaml_token_t token;-- /* Remove any potential simple keys. */-- if (!yaml_parser_remove_simple_key(parser))- return 0;-- /* A simple key may follow a block scalar. */-- parser->simple_key_allowed = 1;-- /* Create the SCALAR token and append it to the queue. */-- if (!yaml_parser_scan_block_scalar(parser, &token, literal))- return 0;-- if (!ENQUEUE(parser, parser->tokens, token)) {- yaml_token_delete(&token);- return 0;- }-- return 1;-}--/*- * Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens.- */--static int-yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single)-{- yaml_token_t token;-- /* A plain scalar could be a simple key. */-- if (!yaml_parser_save_simple_key(parser))- return 0;-- /* A simple key cannot follow a flow scalar. */-- parser->simple_key_allowed = 0;-- /* Create the SCALAR token and append it to the queue. */-- if (!yaml_parser_scan_flow_scalar(parser, &token, single))- return 0;-- if (!ENQUEUE(parser, parser->tokens, token)) {- yaml_token_delete(&token);- return 0;- }-- return 1;-}--/*- * Produce the SCALAR(...,plain) token.- */--static int-yaml_parser_fetch_plain_scalar(yaml_parser_t *parser)-{- yaml_token_t token;-- /* A plain scalar could be a simple key. */-- if (!yaml_parser_save_simple_key(parser))- return 0;-- /* A simple key cannot follow a flow scalar. */-- parser->simple_key_allowed = 0;-- /* Create the SCALAR token and append it to the queue. */-- if (!yaml_parser_scan_plain_scalar(parser, &token))- return 0;-- if (!ENQUEUE(parser, parser->tokens, token)) {- yaml_token_delete(&token);- return 0;- }-- return 1;-}--/*- * Eat whitespaces and comments until the next token is found.- */--static int-yaml_parser_scan_to_next_token(yaml_parser_t *parser)-{- /* Until the next token is not found. */-- while (1)- {- /* Allow the BOM mark to start a line. */-- if (!CACHE(parser, 1)) return 0;-- if (parser->mark.column == 0 && IS_BOM(parser->buffer))- SKIP(parser);-- /*- * Eat whitespaces.- *- * Tabs are allowed:- *- * - in the flow context;- * - in the block context, but not at the beginning of the line or- * after '-', '?', or ':' (complex value).- */-- if (!CACHE(parser, 1)) return 0;-- while (CHECK(parser->buffer,' ') ||- ((parser->flow_level || !parser->simple_key_allowed) &&- CHECK(parser->buffer, '\t'))) {- SKIP(parser);- if (!CACHE(parser, 1)) return 0;- }-- /* Eat a comment until a line break. */-- if (CHECK(parser->buffer, '#')) {- while (!IS_BREAKZ(parser->buffer)) {- SKIP(parser);- if (!CACHE(parser, 1)) return 0;- }- }-- /* If it is a line break, eat it. */-- if (IS_BREAK(parser->buffer))- {- if (!CACHE(parser, 2)) return 0;- SKIP_LINE(parser);-- /* In the block context, a new line may start a simple key. */-- if (!parser->flow_level) {- parser->simple_key_allowed = 1;- }- }- else- {- /* We have found a token. */-- break;- }- }-- return 1;-}--/*- * Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token.- *- * Scope:- * %YAML 1.1 # a comment \n- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- * %TAG !yaml! tag:yaml.org,2002: \n- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- */--int-yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token)-{- yaml_mark_t start_mark, end_mark;- yaml_char_t *name = NULL;- int major, minor;- yaml_char_t *handle = NULL, *prefix = NULL;-- /* Eat '%'. */-- start_mark = parser->mark;-- SKIP(parser);-- /* Scan the directive name. */-- if (!yaml_parser_scan_directive_name(parser, start_mark, &name))- goto error;-- /* Is it a YAML directive? */-- if (strcmp((char *)name, "YAML") == 0)- {- /* Scan the VERSION directive value. */-- if (!yaml_parser_scan_version_directive_value(parser, start_mark,- &major, &minor))- goto error;-- end_mark = parser->mark;-- /* Create a VERSION-DIRECTIVE token. */-- VERSION_DIRECTIVE_TOKEN_INIT(*token, major, minor,- start_mark, end_mark);- }-- /* Is it a TAG directive? */-- else if (strcmp((char *)name, "TAG") == 0)- {- /* Scan the TAG directive value. */-- if (!yaml_parser_scan_tag_directive_value(parser, start_mark,- &handle, &prefix))- goto error;-- end_mark = parser->mark;-- /* Create a TAG-DIRECTIVE token. */-- TAG_DIRECTIVE_TOKEN_INIT(*token, handle, prefix,- start_mark, end_mark);- }-- /* Unknown directive. */-- else- {- yaml_parser_set_scanner_error(parser, "while scanning a directive",- start_mark, "found unknown directive name");- goto error;- }-- /* Eat the rest of the line including any comments. */-- if (!CACHE(parser, 1)) goto error;-- while (IS_BLANK(parser->buffer)) {- SKIP(parser);- if (!CACHE(parser, 1)) goto error;- }-- if (CHECK(parser->buffer, '#')) {- while (!IS_BREAKZ(parser->buffer)) {- SKIP(parser);- if (!CACHE(parser, 1)) goto error;- }- }-- /* Check if we are at the end of the line. */-- if (!IS_BREAKZ(parser->buffer)) {- yaml_parser_set_scanner_error(parser, "while scanning a directive",- start_mark, "did not find expected comment or line break");- goto error;- }-- /* Eat a line break. */-- if (IS_BREAK(parser->buffer)) {- if (!CACHE(parser, 2)) goto error;- SKIP_LINE(parser);- }-- yaml_free(name);-- return 1;--error:- yaml_free(prefix);- yaml_free(handle);- yaml_free(name);- return 0;-}--/*- * Scan the directive name.- *- * Scope:- * %YAML 1.1 # a comment \n- * ^^^^- * %TAG !yaml! tag:yaml.org,2002: \n- * ^^^- */--static int-yaml_parser_scan_directive_name(yaml_parser_t *parser,- yaml_mark_t start_mark, yaml_char_t **name)-{- yaml_string_t string = NULL_STRING;-- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;-- /* Consume the directive name. */-- if (!CACHE(parser, 1)) goto error;-- while (IS_ALPHA(parser->buffer))- {- if (!READ(parser, string)) goto error;- if (!CACHE(parser, 1)) goto error;- }-- /* Check if the name is empty. */-- if (string.start == string.pointer) {- yaml_parser_set_scanner_error(parser, "while scanning a directive",- start_mark, "could not find expected directive name");- goto error;- }-- /* Check for an blank character after the name. */-- if (!IS_BLANKZ(parser->buffer)) {- yaml_parser_set_scanner_error(parser, "while scanning a directive",- start_mark, "found unexpected non-alphabetical character");- goto error;- }-- *name = string.start;-- return 1;--error:- STRING_DEL(parser, string);- return 0;-}--/*- * Scan the value of VERSION-DIRECTIVE.- *- * Scope:- * %YAML 1.1 # a comment \n- * ^^^^^^- */--static int-yaml_parser_scan_version_directive_value(yaml_parser_t *parser,- yaml_mark_t start_mark, int *major, int *minor)-{- /* Eat whitespaces. */-- if (!CACHE(parser, 1)) return 0;-- while (IS_BLANK(parser->buffer)) {- SKIP(parser);- if (!CACHE(parser, 1)) return 0;- }-- /* Consume the major version number. */-- if (!yaml_parser_scan_version_directive_number(parser, start_mark, major))- return 0;-- /* Eat '.'. */-- if (!CHECK(parser->buffer, '.')) {- return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",- start_mark, "did not find expected digit or '.' character");- }-- SKIP(parser);-- /* Consume the minor version number. */-- if (!yaml_parser_scan_version_directive_number(parser, start_mark, minor))- return 0;-- return 1;-}--#define MAX_NUMBER_LENGTH 9--/*- * Scan the version number of VERSION-DIRECTIVE.- *- * Scope:- * %YAML 1.1 # a comment \n- * ^- * %YAML 1.1 # a comment \n- * ^- */--static int-yaml_parser_scan_version_directive_number(yaml_parser_t *parser,- yaml_mark_t start_mark, int *number)-{- int value = 0;- size_t length = 0;-- /* Repeat while the next character is digit. */-- if (!CACHE(parser, 1)) return 0;-- while (IS_DIGIT(parser->buffer))- {- /* Check if the number is too long. */-- if (++length > MAX_NUMBER_LENGTH) {- return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",- start_mark, "found extremely long version number");- }-- value = value*10 + AS_DIGIT(parser->buffer);-- SKIP(parser);-- if (!CACHE(parser, 1)) return 0;- }-- /* Check if the number was present. */-- if (!length) {- return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",- start_mark, "did not find expected version number");- }-- *number = value;-- return 1;-}--/*- * Scan the value of a TAG-DIRECTIVE token.- *- * Scope:- * %TAG !yaml! tag:yaml.org,2002: \n- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- */--static int-yaml_parser_scan_tag_directive_value(yaml_parser_t *parser,- yaml_mark_t start_mark, yaml_char_t **handle, yaml_char_t **prefix)-{- yaml_char_t *handle_value = NULL;- yaml_char_t *prefix_value = NULL;-- /* Eat whitespaces. */-- if (!CACHE(parser, 1)) goto error;-- while (IS_BLANK(parser->buffer)) {- SKIP(parser);- if (!CACHE(parser, 1)) goto error;- }-- /* Scan a handle. */-- if (!yaml_parser_scan_tag_handle(parser, 1, start_mark, &handle_value))- goto error;-- /* Expect a whitespace. */-- if (!CACHE(parser, 1)) goto error;-- if (!IS_BLANK(parser->buffer)) {- yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",- start_mark, "did not find expected whitespace");- goto error;- }-- /* Eat whitespaces. */-- while (IS_BLANK(parser->buffer)) {- SKIP(parser);- if (!CACHE(parser, 1)) goto error;- }-- /* Scan a prefix. */-- if (!yaml_parser_scan_tag_uri(parser, 1, 1, NULL, start_mark, &prefix_value))- goto error;-- /* Expect a whitespace or line break. */-- if (!CACHE(parser, 1)) goto error;-- if (!IS_BLANKZ(parser->buffer)) {- yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",- start_mark, "did not find expected whitespace or line break");- goto error;- }-- *handle = handle_value;- *prefix = prefix_value;-- return 1;--error:- yaml_free(handle_value);- yaml_free(prefix_value);- return 0;-}--static int-yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token,- yaml_token_type_t type)-{- int length = 0;- yaml_mark_t start_mark, end_mark;- yaml_string_t string = NULL_STRING;-- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;-- /* Eat the indicator character. */-- start_mark = parser->mark;-- SKIP(parser);-- /* Consume the value. */-- if (!CACHE(parser, 1)) goto error;-- while (IS_ALPHA(parser->buffer)) {- if (!READ(parser, string)) goto error;- if (!CACHE(parser, 1)) goto error;- length ++;- }-- end_mark = parser->mark;-- /*- * Check if length of the anchor is greater than 0 and it is followed by- * a whitespace character or one of the indicators:- *- * '?', ':', ',', ']', '}', '%', '@', '`'.- */-- if (!length || !(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '?')- || CHECK(parser->buffer, ':') || CHECK(parser->buffer, ',')- || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '}')- || CHECK(parser->buffer, '%') || CHECK(parser->buffer, '@')- || CHECK(parser->buffer, '`'))) {- yaml_parser_set_scanner_error(parser, type == YAML_ANCHOR_TOKEN ?- "while scanning an anchor" : "while scanning an alias", start_mark,- "did not find expected alphabetic or numeric character");- goto error;- }-- /* Create a token. */-- if (type == YAML_ANCHOR_TOKEN) {- ANCHOR_TOKEN_INIT(*token, string.start, start_mark, end_mark);- }- else {- ALIAS_TOKEN_INIT(*token, string.start, start_mark, end_mark);- }-- return 1;--error:- STRING_DEL(parser, string);- return 0;-}--/*- * Scan a TAG token.- */--static int-yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token)-{- yaml_char_t *handle = NULL;- yaml_char_t *suffix = NULL;- yaml_mark_t start_mark, end_mark;-- start_mark = parser->mark;-- /* Check if the tag is in the canonical form. */-- if (!CACHE(parser, 2)) goto error;-- if (CHECK_AT(parser->buffer, '<', 1))- {- /* Set the handle to '' */-- handle = YAML_MALLOC(1);- if (!handle) goto error;- handle[0] = '\0';-- /* Eat '!<' */-- SKIP(parser);- SKIP(parser);-- /* Consume the tag value. */-- if (!yaml_parser_scan_tag_uri(parser, 1, 0, NULL, start_mark, &suffix))- goto error;-- /* Check for '>' and eat it. */-- if (!CHECK(parser->buffer, '>')) {- yaml_parser_set_scanner_error(parser, "while scanning a tag",- start_mark, "did not find the expected '>'");- goto error;- }-- SKIP(parser);- }- else- {- /* The tag has either the '!suffix' or the '!handle!suffix' form. */-- /* First, try to scan a handle. */-- if (!yaml_parser_scan_tag_handle(parser, 0, start_mark, &handle))- goto error;-- /* Check if it is, indeed, handle. */-- if (handle[0] == '!' && handle[1] != '\0' && handle[strlen((char *)handle)-1] == '!')- {- /* Scan the suffix now. */-- if (!yaml_parser_scan_tag_uri(parser, 0, 0, NULL, start_mark, &suffix))- goto error;- }- else- {- /* It wasn't a handle after all. Scan the rest of the tag. */-- if (!yaml_parser_scan_tag_uri(parser, 0, 0, handle, start_mark, &suffix))- goto error;-- /* Set the handle to '!'. */-- yaml_free(handle);- handle = YAML_MALLOC(2);- if (!handle) goto error;- handle[0] = '!';- handle[1] = '\0';-- /*- * A special case: the '!' tag. Set the handle to '' and the- * suffix to '!'.- */-- if (suffix[0] == '\0') {- yaml_char_t *tmp = handle;- handle = suffix;- suffix = tmp;- }- }- }-- /* Check the character which ends the tag. */-- if (!CACHE(parser, 1)) goto error;-- if (!IS_BLANKZ(parser->buffer)) {- if (!parser->flow_level || !CHECK(parser->buffer, ',') ) {- yaml_parser_set_scanner_error(parser, "while scanning a tag",- start_mark, "did not find expected whitespace or line break");- goto error;- }- }-- end_mark = parser->mark;-- /* Create a token. */-- TAG_TOKEN_INIT(*token, handle, suffix, start_mark, end_mark);-- return 1;--error:- yaml_free(handle);- yaml_free(suffix);- return 0;-}--/*- * Scan a tag handle.- */--static int-yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive,- yaml_mark_t start_mark, yaml_char_t **handle)-{- yaml_string_t string = NULL_STRING;-- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;-- /* Check the initial '!' character. */-- if (!CACHE(parser, 1)) goto error;-- if (!CHECK(parser->buffer, '!')) {- yaml_parser_set_scanner_error(parser, directive ?- "while scanning a tag directive" : "while scanning a tag",- start_mark, "did not find expected '!'");- goto error;- }-- /* Copy the '!' character. */-- if (!READ(parser, string)) goto error;-- /* Copy all subsequent alphabetical and numerical characters. */-- if (!CACHE(parser, 1)) goto error;-- while (IS_ALPHA(parser->buffer))- {- if (!READ(parser, string)) goto error;- if (!CACHE(parser, 1)) goto error;- }-- /* Check if the trailing character is '!' and copy it. */-- if (CHECK(parser->buffer, '!'))- {- if (!READ(parser, string)) goto error;- }- else- {- /*- * It's either the '!' tag or not really a tag handle. If it's a %TAG- * directive, it's an error. If it's a tag token, it must be a part of- * URI.- */-- if (directive && !(string.start[0] == '!' && string.start[1] == '\0')) {- yaml_parser_set_scanner_error(parser, "while parsing a tag directive",- start_mark, "did not find expected '!'");- goto error;- }- }-- *handle = string.start;-- return 1;--error:- STRING_DEL(parser, string);- return 0;-}--/*- * Scan a tag.- */--static int-yaml_parser_scan_tag_uri(yaml_parser_t *parser, int uri_char, int directive,- yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri)-{- size_t length = head ? strlen((char *)head) : 0;- yaml_string_t string = NULL_STRING;-- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;-- /* Resize the string to include the head. */-- while ((size_t)(string.end - string.start) <= length) {- if (!yaml_string_extend(&string.start, &string.pointer, &string.end)) {- parser->error = YAML_MEMORY_ERROR;- goto error;- }- }-- /*- * Copy the head if needed.- *- * Note that we don't copy the leading '!' character.- */-- if (length > 1) {- memcpy(string.start, head+1, length-1);- string.pointer += length-1;- }-- /* Scan the tag. */-- if (!CACHE(parser, 1)) goto error;-- /*- * The set of characters that may appear in URI is as follows:- *- * '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&',- * '=', '+', '$', '.', '!', '~', '*', '\'', '(', ')', '%'.- *- * If we are inside a verbatim tag <...> (parameter uri_char is true)- * then also the following flow indicators are allowed:- * ',', '[', ']'- */-- while (IS_ALPHA(parser->buffer) || CHECK(parser->buffer, ';')- || CHECK(parser->buffer, '/') || CHECK(parser->buffer, '?')- || CHECK(parser->buffer, ':') || CHECK(parser->buffer, '@')- || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '=')- || CHECK(parser->buffer, '+') || CHECK(parser->buffer, '$')- || CHECK(parser->buffer, '.') || CHECK(parser->buffer, '%')- || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '~')- || CHECK(parser->buffer, '*') || CHECK(parser->buffer, '\'')- || CHECK(parser->buffer, '(') || CHECK(parser->buffer, ')')- || (uri_char && (- CHECK(parser->buffer, ',')- || CHECK(parser->buffer, '[') || CHECK(parser->buffer, ']')- )- ))- {- /* Check if it is a URI-escape sequence. */-- if (CHECK(parser->buffer, '%')) {- if (!STRING_EXTEND(parser, string))- goto error;-- if (!yaml_parser_scan_uri_escapes(parser,- directive, start_mark, &string)) goto error;- }- else {- if (!READ(parser, string)) goto error;- }-- length ++;- if (!CACHE(parser, 1)) goto error;- }-- /* Check if the tag is non-empty. */-- if (!length) {- if (!STRING_EXTEND(parser, string))- goto error;-- yaml_parser_set_scanner_error(parser, directive ?- "while parsing a %TAG directive" : "while parsing a tag",- start_mark, "did not find expected tag URI");- goto error;- }-- *uri = string.start;-- return 1;--error:- STRING_DEL(parser, string);- return 0;-}--/*- * Decode an URI-escape sequence corresponding to a single UTF-8 character.- */--static int-yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive,- yaml_mark_t start_mark, yaml_string_t *string)-{- int width = 0;-- /* Decode the required number of characters. */-- do {-- unsigned char octet = 0;-- /* Check for a URI-escaped octet. */-- if (!CACHE(parser, 3)) return 0;-- if (!(CHECK(parser->buffer, '%')- && IS_HEX_AT(parser->buffer, 1)- && IS_HEX_AT(parser->buffer, 2))) {- return yaml_parser_set_scanner_error(parser, directive ?- "while parsing a %TAG directive" : "while parsing a tag",- start_mark, "did not find URI escaped octet");- }-- /* Get the octet. */-- octet = (AS_HEX_AT(parser->buffer, 1) << 4) + AS_HEX_AT(parser->buffer, 2);-- /* If it is the leading octet, determine the length of the UTF-8 sequence. */-- if (!width)- {- width = (octet & 0x80) == 0x00 ? 1 :- (octet & 0xE0) == 0xC0 ? 2 :- (octet & 0xF0) == 0xE0 ? 3 :- (octet & 0xF8) == 0xF0 ? 4 : 0;- if (!width) {- return yaml_parser_set_scanner_error(parser, directive ?- "while parsing a %TAG directive" : "while parsing a tag",- start_mark, "found an incorrect leading UTF-8 octet");- }- }- else- {- /* Check if the trailing octet is correct. */-- if ((octet & 0xC0) != 0x80) {- return yaml_parser_set_scanner_error(parser, directive ?- "while parsing a %TAG directive" : "while parsing a tag",- start_mark, "found an incorrect trailing UTF-8 octet");- }- }-- /* Copy the octet and move the pointers. */-- *(string->pointer++) = octet;- SKIP(parser);- SKIP(parser);- SKIP(parser);-- } while (--width);-- return 1;-}--/*- * Scan a block scalar.- */--static int-yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token,- int literal)-{- yaml_mark_t start_mark;- yaml_mark_t end_mark;- yaml_string_t string = NULL_STRING;- yaml_string_t leading_break = NULL_STRING;- yaml_string_t trailing_breaks = NULL_STRING;- int chomping = 0;- int increment = 0;- int indent = 0;- int leading_blank = 0;- int trailing_blank = 0;-- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;- if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;- if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;-- /* Eat the indicator '|' or '>'. */-- start_mark = parser->mark;-- SKIP(parser);-- /* Scan the additional block scalar indicators. */-- if (!CACHE(parser, 1)) goto error;-- /* Check for a chomping indicator. */-- if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-'))- {- /* Set the chomping method and eat the indicator. */-- chomping = CHECK(parser->buffer, '+') ? +1 : -1;-- SKIP(parser);-- /* Check for an indentation indicator. */-- if (!CACHE(parser, 1)) goto error;-- if (IS_DIGIT(parser->buffer))- {- /* Check that the indentation is greater than 0. */-- if (CHECK(parser->buffer, '0')) {- yaml_parser_set_scanner_error(parser, "while scanning a block scalar",- start_mark, "found an indentation indicator equal to 0");- goto error;- }-- /* Get the indentation level and eat the indicator. */-- increment = AS_DIGIT(parser->buffer);-- SKIP(parser);- }- }-- /* Do the same as above, but in the opposite order. */-- else if (IS_DIGIT(parser->buffer))- {- if (CHECK(parser->buffer, '0')) {- yaml_parser_set_scanner_error(parser, "while scanning a block scalar",- start_mark, "found an indentation indicator equal to 0");- goto error;- }-- increment = AS_DIGIT(parser->buffer);-- SKIP(parser);-- if (!CACHE(parser, 1)) goto error;-- if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-')) {- chomping = CHECK(parser->buffer, '+') ? +1 : -1;-- SKIP(parser);- }- }-- /* Eat whitespaces and comments to the end of the line. */-- if (!CACHE(parser, 1)) goto error;-- while (IS_BLANK(parser->buffer)) {- SKIP(parser);- if (!CACHE(parser, 1)) goto error;- }-- if (CHECK(parser->buffer, '#')) {- while (!IS_BREAKZ(parser->buffer)) {- SKIP(parser);- if (!CACHE(parser, 1)) goto error;- }- }-- /* Check if we are at the end of the line. */-- if (!IS_BREAKZ(parser->buffer)) {- yaml_parser_set_scanner_error(parser, "while scanning a block scalar",- start_mark, "did not find expected comment or line break");- goto error;- }-- /* Eat a line break. */-- if (IS_BREAK(parser->buffer)) {- if (!CACHE(parser, 2)) goto error;- SKIP_LINE(parser);- }-- end_mark = parser->mark;-- /* Set the indentation level if it was specified. */-- if (increment) {- indent = parser->indent >= 0 ? parser->indent+increment : increment;- }-- /* Scan the leading line breaks and determine the indentation level if needed. */-- if (!yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks,- start_mark, &end_mark)) goto error;-- /* Scan the block scalar content. */-- if (!CACHE(parser, 1)) goto error;-- while ((int)parser->mark.column == indent && !(IS_Z(parser->buffer)))- {- /*- * We are at the beginning of a non-empty line.- */-- /* Is it a trailing whitespace? */-- trailing_blank = IS_BLANK(parser->buffer);-- /* Check if we need to fold the leading line break. */-- if (!literal && (*leading_break.start == '\n')- && !leading_blank && !trailing_blank)- {- /* Do we need to join the lines by space? */-- if (*trailing_breaks.start == '\0') {- if (!STRING_EXTEND(parser, string)) goto error;- *(string.pointer ++) = ' ';- }-- CLEAR(parser, leading_break);- }- else {- if (!JOIN(parser, string, leading_break)) goto error;- CLEAR(parser, leading_break);- }-- /* Append the remaining line breaks. */-- if (!JOIN(parser, string, trailing_breaks)) goto error;- CLEAR(parser, trailing_breaks);-- /* Is it a leading whitespace? */-- leading_blank = IS_BLANK(parser->buffer);-- /* Consume the current line. */-- while (!IS_BREAKZ(parser->buffer)) {- if (!READ(parser, string)) goto error;- if (!CACHE(parser, 1)) goto error;- }-- /* Consume the line break. */-- if (!CACHE(parser, 2)) goto error;-- if (!READ_LINE(parser, leading_break)) goto error;-- /* Eat the following indentation spaces and line breaks. */-- if (!yaml_parser_scan_block_scalar_breaks(parser,- &indent, &trailing_breaks, start_mark, &end_mark)) goto error;- }-- /* Chomp the tail. */-- if (chomping != -1) {- if (!JOIN(parser, string, leading_break)) goto error;- }- if (chomping == 1) {- if (!JOIN(parser, string, trailing_breaks)) goto error;- }-- /* Create a token. */-- SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,- literal ? YAML_LITERAL_SCALAR_STYLE : YAML_FOLDED_SCALAR_STYLE,- start_mark, end_mark);-- STRING_DEL(parser, leading_break);- STRING_DEL(parser, trailing_breaks);-- return 1;--error:- STRING_DEL(parser, string);- STRING_DEL(parser, leading_break);- STRING_DEL(parser, trailing_breaks);-- return 0;-}--/*- * Scan indentation spaces and line breaks for a block scalar. Determine the- * indentation level if needed.- */--static int-yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser,- int *indent, yaml_string_t *breaks,- yaml_mark_t start_mark, yaml_mark_t *end_mark)-{- int max_indent = 0;-- *end_mark = parser->mark;-- /* Eat the indentation spaces and line breaks. */-- while (1)- {- /* Eat the indentation spaces. */-- if (!CACHE(parser, 1)) return 0;-- while ((!*indent || (int)parser->mark.column < *indent)- && IS_SPACE(parser->buffer)) {- SKIP(parser);- if (!CACHE(parser, 1)) return 0;- }-- if ((int)parser->mark.column > max_indent)- max_indent = (int)parser->mark.column;-- /* Check for a tab character messing the indentation. */-- if ((!*indent || (int)parser->mark.column < *indent)- && IS_TAB(parser->buffer)) {- return yaml_parser_set_scanner_error(parser, "while scanning a block scalar",- start_mark, "found a tab character where an indentation space is expected");- }-- /* Have we found a non-empty line? */-- if (!IS_BREAK(parser->buffer)) break;-- /* Consume the line break. */-- if (!CACHE(parser, 2)) return 0;- if (!READ_LINE(parser, *breaks)) return 0;- *end_mark = parser->mark;- }-- /* Determine the indentation level if needed. */-- if (!*indent) {- *indent = max_indent;- if (*indent < parser->indent + 1)- *indent = parser->indent + 1;- if (*indent < 1)- *indent = 1;- }-- return 1;-}--/*- * Scan a quoted scalar.- */--static int-yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token,- int single)-{- yaml_mark_t start_mark;- yaml_mark_t end_mark;- yaml_string_t string = NULL_STRING;- yaml_string_t leading_break = NULL_STRING;- yaml_string_t trailing_breaks = NULL_STRING;- yaml_string_t whitespaces = NULL_STRING;- int leading_blanks;-- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;- if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;- if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;- if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error;-- /* Eat the left quote. */-- start_mark = parser->mark;-- SKIP(parser);-- /* Consume the content of the quoted scalar. */-- while (1)- {- /* Check that there are no document indicators at the beginning of the line. */-- if (!CACHE(parser, 4)) goto error;-- if (parser->mark.column == 0 &&- ((CHECK_AT(parser->buffer, '-', 0) &&- CHECK_AT(parser->buffer, '-', 1) &&- CHECK_AT(parser->buffer, '-', 2)) ||- (CHECK_AT(parser->buffer, '.', 0) &&- CHECK_AT(parser->buffer, '.', 1) &&- CHECK_AT(parser->buffer, '.', 2))) &&- IS_BLANKZ_AT(parser->buffer, 3))- {- yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",- start_mark, "found unexpected document indicator");- goto error;- }-- /* Check for EOF. */-- if (IS_Z(parser->buffer)) {- yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",- start_mark, "found unexpected end of stream");- goto error;- }-- /* Consume non-blank characters. */-- if (!CACHE(parser, 2)) goto error;-- leading_blanks = 0;-- while (!IS_BLANKZ(parser->buffer))- {- /* Check for an escaped single quote. */-- if (single && CHECK_AT(parser->buffer, '\'', 0)- && CHECK_AT(parser->buffer, '\'', 1))- {- if (!STRING_EXTEND(parser, string)) goto error;- *(string.pointer++) = '\'';- SKIP(parser);- SKIP(parser);- }-- /* Check for the right quote. */-- else if (CHECK(parser->buffer, single ? '\'' : '"'))- {- break;- }-- /* Check for an escaped line break. */-- else if (!single && CHECK(parser->buffer, '\\')- && IS_BREAK_AT(parser->buffer, 1))- {- if (!CACHE(parser, 3)) goto error;- SKIP(parser);- SKIP_LINE(parser);- leading_blanks = 1;- break;- }-- /* Check for an escape sequence. */-- else if (!single && CHECK(parser->buffer, '\\'))- {- size_t code_length = 0;-- if (!STRING_EXTEND(parser, string)) goto error;-- /* Check the escape character. */-- switch (parser->buffer.pointer[1])- {- case '0':- *(string.pointer++) = '\0';- break;-- case 'a':- *(string.pointer++) = '\x07';- break;-- case 'b':- *(string.pointer++) = '\x08';- break;-- case 't':- case '\t':- *(string.pointer++) = '\x09';- break;-- case 'n':- *(string.pointer++) = '\x0A';- break;-- case 'v':- *(string.pointer++) = '\x0B';- break;-- case 'f':- *(string.pointer++) = '\x0C';- break;-- case 'r':- *(string.pointer++) = '\x0D';- break;-- case 'e':- *(string.pointer++) = '\x1B';- break;-- case ' ':- *(string.pointer++) = '\x20';- break;-- case '"':- *(string.pointer++) = '"';- break;-- case '/':- *(string.pointer++) = '/';- break;-- case '\\':- *(string.pointer++) = '\\';- break;-- case 'N': /* NEL (#x85) */- *(string.pointer++) = '\xC2';- *(string.pointer++) = '\x85';- break;-- case '_': /* #xA0 */- *(string.pointer++) = '\xC2';- *(string.pointer++) = '\xA0';- break;-- case 'L': /* LS (#x2028) */- *(string.pointer++) = '\xE2';- *(string.pointer++) = '\x80';- *(string.pointer++) = '\xA8';- break;-- case 'P': /* PS (#x2029) */- *(string.pointer++) = '\xE2';- *(string.pointer++) = '\x80';- *(string.pointer++) = '\xA9';- break;-- case 'x':- code_length = 2;- break;-- case 'u':- code_length = 4;- break;-- case 'U':- code_length = 8;- break;-- default:- yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",- start_mark, "found unknown escape character");- goto error;- }-- SKIP(parser);- SKIP(parser);-- /* Consume an arbitrary escape code. */-- if (code_length)- {- unsigned int value = 0;- size_t k;-- /* Scan the character value. */-- if (!CACHE(parser, code_length)) goto error;-- for (k = 0; k < code_length; k ++) {- if (!IS_HEX_AT(parser->buffer, k)) {- yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",- start_mark, "did not find expected hexdecimal number");- goto error;- }- value = (value << 4) + AS_HEX_AT(parser->buffer, k);- }-- /* Check the value and write the character. */-- if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF) {- yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",- start_mark, "found invalid Unicode character escape code");- goto error;- }-- if (value <= 0x7F) {- *(string.pointer++) = value;- }- else if (value <= 0x7FF) {- *(string.pointer++) = 0xC0 + (value >> 6);- *(string.pointer++) = 0x80 + (value & 0x3F);- }- else if (value <= 0xFFFF) {- *(string.pointer++) = 0xE0 + (value >> 12);- *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F);- *(string.pointer++) = 0x80 + (value & 0x3F);- }- else {- *(string.pointer++) = 0xF0 + (value >> 18);- *(string.pointer++) = 0x80 + ((value >> 12) & 0x3F);- *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F);- *(string.pointer++) = 0x80 + (value & 0x3F);- }-- /* Advance the pointer. */-- for (k = 0; k < code_length; k ++) {- SKIP(parser);- }- }- }-- else- {- /* It is a non-escaped non-blank character. */-- if (!READ(parser, string)) goto error;- }-- if (!CACHE(parser, 2)) goto error;- }-- /* Check if we are at the end of the scalar. */-- /* Fix for crash unitialized value crash- * Credit for the bug and input is to OSS Fuzz- * Credit for the fix to Alex Gaynor- */- if (!CACHE(parser, 1)) goto error;- if (CHECK(parser->buffer, single ? '\'' : '"'))- break;-- /* Consume blank characters. */-- if (!CACHE(parser, 1)) goto error;-- while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer))- {- if (IS_BLANK(parser->buffer))- {- /* Consume a space or a tab character. */-- if (!leading_blanks) {- if (!READ(parser, whitespaces)) goto error;- }- else {- SKIP(parser);- }- }- else- {- if (!CACHE(parser, 2)) goto error;-- /* Check if it is a first line break. */-- if (!leading_blanks)- {- CLEAR(parser, whitespaces);- if (!READ_LINE(parser, leading_break)) goto error;- leading_blanks = 1;- }- else- {- if (!READ_LINE(parser, trailing_breaks)) goto error;- }- }- if (!CACHE(parser, 1)) goto error;- }-- /* Join the whitespaces or fold line breaks. */-- if (leading_blanks)- {- /* Do we need to fold line breaks? */-- if (leading_break.start[0] == '\n') {- if (trailing_breaks.start[0] == '\0') {- if (!STRING_EXTEND(parser, string)) goto error;- *(string.pointer++) = ' ';- }- else {- if (!JOIN(parser, string, trailing_breaks)) goto error;- CLEAR(parser, trailing_breaks);- }- CLEAR(parser, leading_break);- }- else {- if (!JOIN(parser, string, leading_break)) goto error;- if (!JOIN(parser, string, trailing_breaks)) goto error;- CLEAR(parser, leading_break);- CLEAR(parser, trailing_breaks);- }- }- else- {- if (!JOIN(parser, string, whitespaces)) goto error;- CLEAR(parser, whitespaces);- }- }-- /* Eat the right quote. */-- SKIP(parser);-- end_mark = parser->mark;-- /* Create a token. */-- SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,- single ? YAML_SINGLE_QUOTED_SCALAR_STYLE : YAML_DOUBLE_QUOTED_SCALAR_STYLE,- start_mark, end_mark);-- STRING_DEL(parser, leading_break);- STRING_DEL(parser, trailing_breaks);- STRING_DEL(parser, whitespaces);-- return 1;--error:- STRING_DEL(parser, string);- STRING_DEL(parser, leading_break);- STRING_DEL(parser, trailing_breaks);- STRING_DEL(parser, whitespaces);-- return 0;-}--/*- * Scan a plain scalar.- */--static int-yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token)-{- yaml_mark_t start_mark;- yaml_mark_t end_mark;- yaml_string_t string = NULL_STRING;- yaml_string_t leading_break = NULL_STRING;- yaml_string_t trailing_breaks = NULL_STRING;- yaml_string_t whitespaces = NULL_STRING;- int leading_blanks = 0;- int indent = parser->indent+1;-- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;- if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;- if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;- if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error;-- start_mark = end_mark = parser->mark;-- /* Consume the content of the plain scalar. */-- while (1)- {- /* Check for a document indicator. */-- if (!CACHE(parser, 4)) goto error;-- if (parser->mark.column == 0 &&- ((CHECK_AT(parser->buffer, '-', 0) &&- CHECK_AT(parser->buffer, '-', 1) &&- CHECK_AT(parser->buffer, '-', 2)) ||- (CHECK_AT(parser->buffer, '.', 0) &&- CHECK_AT(parser->buffer, '.', 1) &&- CHECK_AT(parser->buffer, '.', 2))) &&- IS_BLANKZ_AT(parser->buffer, 3)) break;-- /* Check for a comment. */-- if (CHECK(parser->buffer, '#'))- break;-- /* Consume non-blank characters. */-- while (!IS_BLANKZ(parser->buffer))- {- /* Check for "x:" + one of ',?[]{}' in the flow context. TODO: Fix the test "spec-08-13".- * This is not completely according to the spec- * See http://yaml.org/spec/1.1/#id907281 9.1.3. Plain- */-- if (parser->flow_level- && CHECK(parser->buffer, ':')- && (- CHECK_AT(parser->buffer, ',', 1)- || CHECK_AT(parser->buffer, '?', 1)- || CHECK_AT(parser->buffer, '[', 1)- || CHECK_AT(parser->buffer, ']', 1)- || CHECK_AT(parser->buffer, '{', 1)- || CHECK_AT(parser->buffer, '}', 1)- )- ) {- yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",- start_mark, "found unexpected ':'");- goto error;- }-- /* Check for indicators that may end a plain scalar. */-- if ((CHECK(parser->buffer, ':') && IS_BLANKZ_AT(parser->buffer, 1))- || (parser->flow_level &&- (CHECK(parser->buffer, ',')- || CHECK(parser->buffer, '[')- || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{')- || CHECK(parser->buffer, '}'))))- break;-- /* Check if we need to join whitespaces and breaks. */-- if (leading_blanks || whitespaces.start != whitespaces.pointer)- {- if (leading_blanks)- {- /* Do we need to fold line breaks? */-- if (leading_break.start[0] == '\n') {- if (trailing_breaks.start[0] == '\0') {- if (!STRING_EXTEND(parser, string)) goto error;- *(string.pointer++) = ' ';- }- else {- if (!JOIN(parser, string, trailing_breaks)) goto error;- CLEAR(parser, trailing_breaks);- }- CLEAR(parser, leading_break);- }- else {- if (!JOIN(parser, string, leading_break)) goto error;- if (!JOIN(parser, string, trailing_breaks)) goto error;- CLEAR(parser, leading_break);- CLEAR(parser, trailing_breaks);- }-- leading_blanks = 0;- }- else- {- if (!JOIN(parser, string, whitespaces)) goto error;- CLEAR(parser, whitespaces);- }- }-- /* Copy the character. */-- if (!READ(parser, string)) goto error;-- end_mark = parser->mark;-- if (!CACHE(parser, 2)) goto error;- }-- /* Is it the end? */-- if (!(IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer)))- break;-- /* Consume blank characters. */-- if (!CACHE(parser, 1)) goto error;-- while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer))- {- if (IS_BLANK(parser->buffer))- {- /* Check for tab characters that abuse indentation. */-- if (leading_blanks && (int)parser->mark.column < indent- && IS_TAB(parser->buffer)) {- yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",- start_mark, "found a tab character that violates indentation");- goto error;- }-- /* Consume a space or a tab character. */-- if (!leading_blanks) {- if (!READ(parser, whitespaces)) goto error;- }- else {- SKIP(parser);- }- }- else- {- if (!CACHE(parser, 2)) goto error;-- /* Check if it is a first line break. */-- if (!leading_blanks)- {- CLEAR(parser, whitespaces);- if (!READ_LINE(parser, leading_break)) goto error;- leading_blanks = 1;- }- else- {- if (!READ_LINE(parser, trailing_breaks)) goto error;- }- }- if (!CACHE(parser, 1)) goto error;- }-- /* Check indentation level. */-- if (!parser->flow_level && (int)parser->mark.column < indent)- break;- }-- /* Create a token. */-- SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,- YAML_PLAIN_SCALAR_STYLE, start_mark, end_mark);-- /* Note that we change the 'simple_key_allowed' flag. */-- if (leading_blanks) {- parser->simple_key_allowed = 1;- }-- STRING_DEL(parser, leading_break);- STRING_DEL(parser, trailing_breaks);- STRING_DEL(parser, whitespaces);-- return 1;--error:- STRING_DEL(parser, string);- STRING_DEL(parser, leading_break);- STRING_DEL(parser, trailing_breaks);- STRING_DEL(parser, whitespaces);-- return 0;-}
− libyaml_src/writer.c
@@ -1,141 +0,0 @@--#include "yaml_private.h"--/*- * Declarations.- */--static int-yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem);--YAML_DECLARE(int)-yaml_emitter_flush(yaml_emitter_t *emitter);--/*- * Set the writer error and return 0.- */--static int-yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem)-{- emitter->error = YAML_WRITER_ERROR;- emitter->problem = problem;-- return 0;-}--/*- * Flush the output buffer.- */--YAML_DECLARE(int)-yaml_emitter_flush(yaml_emitter_t *emitter)-{- int low, high;-- assert(emitter); /* Non-NULL emitter object is expected. */- assert(emitter->write_handler); /* Write handler must be set. */- assert(emitter->encoding); /* Output encoding must be set. */-- emitter->buffer.last = emitter->buffer.pointer;- emitter->buffer.pointer = emitter->buffer.start;-- /* Check if the buffer is empty. */-- if (emitter->buffer.start == emitter->buffer.last) {- return 1;- }-- /* If the output encoding is UTF-8, we don't need to recode the buffer. */-- if (emitter->encoding == YAML_UTF8_ENCODING)- {- if (emitter->write_handler(emitter->write_handler_data,- emitter->buffer.start,- emitter->buffer.last - emitter->buffer.start)) {- emitter->buffer.last = emitter->buffer.start;- emitter->buffer.pointer = emitter->buffer.start;- return 1;- }- else {- return yaml_emitter_set_writer_error(emitter, "write error");- }- }-- /* Recode the buffer into the raw buffer. */-- low = (emitter->encoding == YAML_UTF16LE_ENCODING ? 0 : 1);- high = (emitter->encoding == YAML_UTF16LE_ENCODING ? 1 : 0);-- while (emitter->buffer.pointer != emitter->buffer.last)- {- unsigned char octet;- unsigned int width;- unsigned int value;- size_t k;-- /*- * See the "reader.c" code for more details on UTF-8 encoding. Note- * that we assume that the buffer contains a valid UTF-8 sequence.- */-- /* Read the next UTF-8 character. */-- octet = emitter->buffer.pointer[0];-- width = (octet & 0x80) == 0x00 ? 1 :- (octet & 0xE0) == 0xC0 ? 2 :- (octet & 0xF0) == 0xE0 ? 3 :- (octet & 0xF8) == 0xF0 ? 4 : 0;-- value = (octet & 0x80) == 0x00 ? octet & 0x7F :- (octet & 0xE0) == 0xC0 ? octet & 0x1F :- (octet & 0xF0) == 0xE0 ? octet & 0x0F :- (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;-- for (k = 1; k < width; k ++) {- octet = emitter->buffer.pointer[k];- value = (value << 6) + (octet & 0x3F);- }-- emitter->buffer.pointer += width;-- /* Write the character. */-- if (value < 0x10000)- {- emitter->raw_buffer.last[high] = value >> 8;- emitter->raw_buffer.last[low] = value & 0xFF;-- emitter->raw_buffer.last += 2;- }- else- {- /* Write the character using a surrogate pair (check "reader.c"). */-- value -= 0x10000;- emitter->raw_buffer.last[high] = 0xD8 + (value >> 18);- emitter->raw_buffer.last[low] = (value >> 10) & 0xFF;- emitter->raw_buffer.last[high+2] = 0xDC + ((value >> 8) & 0xFF);- emitter->raw_buffer.last[low+2] = value & 0xFF;-- emitter->raw_buffer.last += 4;- }- }-- /* Write the raw buffer. */-- if (emitter->write_handler(emitter->write_handler_data,- emitter->raw_buffer.start,- emitter->raw_buffer.last - emitter->raw_buffer.start)) {- emitter->buffer.last = emitter->buffer.start;- emitter->buffer.pointer = emitter->buffer.start;- emitter->raw_buffer.last = emitter->raw_buffer.start;- emitter->raw_buffer.pointer = emitter->raw_buffer.start;- return 1;- }- else {- return yaml_emitter_set_writer_error(emitter, "write error");- }-}-
− libyaml_src/yaml.h
@@ -1,1985 +0,0 @@-/**- * @file yaml.h- * @brief Public interface for libyaml.- * - * Include the header file with the code:- * @code- * #include <yaml.h>- * @endcode- */--#ifndef YAML_H-#define YAML_H--#ifdef __cplusplus-extern "C" {-#endif--#include <stdlib.h>-#include <stdio.h>-#include <string.h>--/**- * @defgroup export Export Definitions- * @{- */--/** The public API declaration. */--#if defined(__MINGW32__)-# define YAML_DECLARE(type) type-#elif defined(_WIN32)-# if defined(YAML_DECLARE_STATIC)-# define YAML_DECLARE(type) type-# elif defined(YAML_DECLARE_EXPORT)-# define YAML_DECLARE(type) __declspec(dllexport) type-# else-# define YAML_DECLARE(type) __declspec(dllimport) type-# endif-#else-# define YAML_DECLARE(type) type-#endif--/** @} */--/**- * @defgroup version Version Information- * @{- */--/**- * Get the library version as a string.- *- * @returns The function returns the pointer to a static string of the form- * @c "X.Y.Z", where @c X is the major version number, @c Y is a minor version- * number, and @c Z is the patch version number.- */--YAML_DECLARE(const char *)-yaml_get_version_string(void);--/**- * Get the library version numbers.- *- * @param[out] major Major version number.- * @param[out] minor Minor version number.- * @param[out] patch Patch version number.- */--YAML_DECLARE(void)-yaml_get_version(int *major, int *minor, int *patch);--/** @} */--/**- * @defgroup basic Basic Types- * @{- */--/** The character type (UTF-8 octet). */-typedef unsigned char yaml_char_t;--/** The version directive data. */-typedef struct yaml_version_directive_s {- /** The major version number. */- int major;- /** The minor version number. */- int minor;-} yaml_version_directive_t;--/** The tag directive data. */-typedef struct yaml_tag_directive_s {- /** The tag handle. */- yaml_char_t *handle;- /** The tag prefix. */- yaml_char_t *prefix;-} yaml_tag_directive_t;--/** The stream encoding. */-typedef enum yaml_encoding_e {- /** Let the parser choose the encoding. */- YAML_ANY_ENCODING,- /** The default UTF-8 encoding. */- YAML_UTF8_ENCODING,- /** The UTF-16-LE encoding with BOM. */- YAML_UTF16LE_ENCODING,- /** The UTF-16-BE encoding with BOM. */- YAML_UTF16BE_ENCODING-} yaml_encoding_t;--/** Line break types. */--typedef enum yaml_break_e {- /** Let the parser choose the break type. */- YAML_ANY_BREAK,- /** Use CR for line breaks (Mac style). */- YAML_CR_BREAK,- /** Use LN for line breaks (Unix style). */- YAML_LN_BREAK,- /** Use CR LN for line breaks (DOS style). */- YAML_CRLN_BREAK-} yaml_break_t;--/** Many bad things could happen with the parser and emitter. */-typedef enum yaml_error_type_e {- /** No error is produced. */- YAML_NO_ERROR,-- /** Cannot allocate or reallocate a block of memory. */- YAML_MEMORY_ERROR,-- /** Cannot read or decode the input stream. */- YAML_READER_ERROR,- /** Cannot scan the input stream. */- YAML_SCANNER_ERROR,- /** Cannot parse the input stream. */- YAML_PARSER_ERROR,- /** Cannot compose a YAML document. */- YAML_COMPOSER_ERROR,-- /** Cannot write to the output stream. */- YAML_WRITER_ERROR,- /** Cannot emit a YAML stream. */- YAML_EMITTER_ERROR-} yaml_error_type_t;--/** The pointer position. */-typedef struct yaml_mark_s {- /** The position index. */- size_t index;-- /** The position line. */- size_t line;-- /** The position column. */- size_t column;-} yaml_mark_t;--/** @} */--/**- * @defgroup styles Node Styles- * @{- */--/** Scalar styles. */-typedef enum yaml_scalar_style_e {- /** Let the emitter choose the style. */- YAML_ANY_SCALAR_STYLE,-- /** The plain scalar style. */- YAML_PLAIN_SCALAR_STYLE,-- /** The single-quoted scalar style. */- YAML_SINGLE_QUOTED_SCALAR_STYLE,- /** The double-quoted scalar style. */- YAML_DOUBLE_QUOTED_SCALAR_STYLE,-- /** The literal scalar style. */- YAML_LITERAL_SCALAR_STYLE,- /** The folded scalar style. */- YAML_FOLDED_SCALAR_STYLE-} yaml_scalar_style_t;--/** Sequence styles. */-typedef enum yaml_sequence_style_e {- /** Let the emitter choose the style. */- YAML_ANY_SEQUENCE_STYLE,-- /** The block sequence style. */- YAML_BLOCK_SEQUENCE_STYLE,- /** The flow sequence style. */- YAML_FLOW_SEQUENCE_STYLE-} yaml_sequence_style_t;--/** Mapping styles. */-typedef enum yaml_mapping_style_e {- /** Let the emitter choose the style. */- YAML_ANY_MAPPING_STYLE,-- /** The block mapping style. */- YAML_BLOCK_MAPPING_STYLE,- /** The flow mapping style. */- YAML_FLOW_MAPPING_STYLE-/* YAML_FLOW_SET_MAPPING_STYLE */-} yaml_mapping_style_t;--/** @} */--/**- * @defgroup tokens Tokens- * @{- */--/** Token types. */-typedef enum yaml_token_type_e {- /** An empty token. */- YAML_NO_TOKEN,-- /** A STREAM-START token. */- YAML_STREAM_START_TOKEN,- /** A STREAM-END token. */- YAML_STREAM_END_TOKEN,-- /** A VERSION-DIRECTIVE token. */- YAML_VERSION_DIRECTIVE_TOKEN,- /** A TAG-DIRECTIVE token. */- YAML_TAG_DIRECTIVE_TOKEN,- /** A DOCUMENT-START token. */- YAML_DOCUMENT_START_TOKEN,- /** A DOCUMENT-END token. */- YAML_DOCUMENT_END_TOKEN,-- /** A BLOCK-SEQUENCE-START token. */- YAML_BLOCK_SEQUENCE_START_TOKEN,- /** A BLOCK-MAPPING-START token. */- YAML_BLOCK_MAPPING_START_TOKEN,- /** A BLOCK-END token. */- YAML_BLOCK_END_TOKEN,-- /** A FLOW-SEQUENCE-START token. */- YAML_FLOW_SEQUENCE_START_TOKEN,- /** A FLOW-SEQUENCE-END token. */- YAML_FLOW_SEQUENCE_END_TOKEN,- /** A FLOW-MAPPING-START token. */- YAML_FLOW_MAPPING_START_TOKEN,- /** A FLOW-MAPPING-END token. */- YAML_FLOW_MAPPING_END_TOKEN,-- /** A BLOCK-ENTRY token. */- YAML_BLOCK_ENTRY_TOKEN,- /** A FLOW-ENTRY token. */- YAML_FLOW_ENTRY_TOKEN,- /** A KEY token. */- YAML_KEY_TOKEN,- /** A VALUE token. */- YAML_VALUE_TOKEN,-- /** An ALIAS token. */- YAML_ALIAS_TOKEN,- /** An ANCHOR token. */- YAML_ANCHOR_TOKEN,- /** A TAG token. */- YAML_TAG_TOKEN,- /** A SCALAR token. */- YAML_SCALAR_TOKEN-} yaml_token_type_t;--/** The token structure. */-typedef struct yaml_token_s {-- /** The token type. */- yaml_token_type_t type;-- /** The token data. */- union {-- /** The stream start (for @c YAML_STREAM_START_TOKEN). */- struct {- /** The stream encoding. */- yaml_encoding_t encoding;- } stream_start;-- /** The alias (for @c YAML_ALIAS_TOKEN). */- struct {- /** The alias value. */- yaml_char_t *value;- } alias;-- /** The anchor (for @c YAML_ANCHOR_TOKEN). */- struct {- /** The anchor value. */- yaml_char_t *value;- } anchor;-- /** The tag (for @c YAML_TAG_TOKEN). */- struct {- /** The tag handle. */- yaml_char_t *handle;- /** The tag suffix. */- yaml_char_t *suffix;- } tag;-- /** The scalar value (for @c YAML_SCALAR_TOKEN). */- struct {- /** The scalar value. */- yaml_char_t *value;- /** The length of the scalar value. */- size_t length;- /** The scalar style. */- yaml_scalar_style_t style;- } scalar;-- /** The version directive (for @c YAML_VERSION_DIRECTIVE_TOKEN). */- struct {- /** The major version number. */- int major;- /** The minor version number. */- int minor;- } version_directive;-- /** The tag directive (for @c YAML_TAG_DIRECTIVE_TOKEN). */- struct {- /** The tag handle. */- yaml_char_t *handle;- /** The tag prefix. */- yaml_char_t *prefix;- } tag_directive;-- } data;-- /** The beginning of the token. */- yaml_mark_t start_mark;- /** The end of the token. */- yaml_mark_t end_mark;--} yaml_token_t;--/**- * Free any memory allocated for a token object.- *- * @param[in,out] token A token object.- */--YAML_DECLARE(void)-yaml_token_delete(yaml_token_t *token);--/** @} */--/**- * @defgroup events Events- * @{- */--/** Event types. */-typedef enum yaml_event_type_e {- /** An empty event. */- YAML_NO_EVENT,-- /** A STREAM-START event. */- YAML_STREAM_START_EVENT,- /** A STREAM-END event. */- YAML_STREAM_END_EVENT,-- /** A DOCUMENT-START event. */- YAML_DOCUMENT_START_EVENT,- /** A DOCUMENT-END event. */- YAML_DOCUMENT_END_EVENT,-- /** An ALIAS event. */- YAML_ALIAS_EVENT,- /** A SCALAR event. */- YAML_SCALAR_EVENT,-- /** A SEQUENCE-START event. */- YAML_SEQUENCE_START_EVENT,- /** A SEQUENCE-END event. */- YAML_SEQUENCE_END_EVENT,-- /** A MAPPING-START event. */- YAML_MAPPING_START_EVENT,- /** A MAPPING-END event. */- YAML_MAPPING_END_EVENT-} yaml_event_type_t;--/** The event structure. */-typedef struct yaml_event_s {-- /** The event type. */- yaml_event_type_t type;-- /** The event data. */- union {- - /** The stream parameters (for @c YAML_STREAM_START_EVENT). */- struct {- /** The document encoding. */- yaml_encoding_t encoding;- } stream_start;-- /** The document parameters (for @c YAML_DOCUMENT_START_EVENT). */- struct {- /** The version directive. */- yaml_version_directive_t *version_directive;-- /** The list of tag directives. */- struct {- /** The beginning of the tag directives list. */- yaml_tag_directive_t *start;- /** The end of the tag directives list. */- yaml_tag_directive_t *end;- } tag_directives;-- /** Is the document indicator implicit? */- int implicit;- } document_start;-- /** The document end parameters (for @c YAML_DOCUMENT_END_EVENT). */- struct {- /** Is the document end indicator implicit? */- int implicit;- } document_end;-- /** The alias parameters (for @c YAML_ALIAS_EVENT). */- struct {- /** The anchor. */- yaml_char_t *anchor;- } alias;-- /** The scalar parameters (for @c YAML_SCALAR_EVENT). */- struct {- /** The anchor. */- yaml_char_t *anchor;- /** The tag. */- yaml_char_t *tag;- /** The scalar value. */- yaml_char_t *value;- /** The length of the scalar value. */- size_t length;- /** Is the tag optional for the plain style? */- int plain_implicit;- /** Is the tag optional for any non-plain style? */- int quoted_implicit;- /** The scalar style. */- yaml_scalar_style_t style;- } scalar;-- /** The sequence parameters (for @c YAML_SEQUENCE_START_EVENT). */- struct {- /** The anchor. */- yaml_char_t *anchor;- /** The tag. */- yaml_char_t *tag;- /** Is the tag optional? */- int implicit;- /** The sequence style. */- yaml_sequence_style_t style;- } sequence_start;-- /** The mapping parameters (for @c YAML_MAPPING_START_EVENT). */- struct {- /** The anchor. */- yaml_char_t *anchor;- /** The tag. */- yaml_char_t *tag;- /** Is the tag optional? */- int implicit;- /** The mapping style. */- yaml_mapping_style_t style;- } mapping_start;-- } data;-- /** The beginning of the event. */- yaml_mark_t start_mark;- /** The end of the event. */- yaml_mark_t end_mark;--} yaml_event_t;--/**- * Create the STREAM-START event.- *- * @param[out] event An empty event object.- * @param[in] encoding The stream encoding.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_stream_start_event_initialize(yaml_event_t *event,- yaml_encoding_t encoding);--/**- * Create the STREAM-END event.- *- * @param[out] event An empty event object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_stream_end_event_initialize(yaml_event_t *event);--/**- * Create the DOCUMENT-START event.- *- * The @a implicit argument is considered as a stylistic parameter and may be- * ignored by the emitter.- *- * @param[out] event An empty event object.- * @param[in] version_directive The %YAML directive value or- * @c NULL.- * @param[in] tag_directives_start The beginning of the %TAG- * directives list.- * @param[in] tag_directives_end The end of the %TAG directives- * list.- * @param[in] implicit If the document start indicator is- * implicit.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_document_start_event_initialize(yaml_event_t *event,- yaml_version_directive_t *version_directive,- yaml_tag_directive_t *tag_directives_start,- yaml_tag_directive_t *tag_directives_end,- int implicit);--/**- * Create the DOCUMENT-END event.- *- * The @a implicit argument is considered as a stylistic parameter and may be- * ignored by the emitter.- *- * @param[out] event An empty event object.- * @param[in] implicit If the document end indicator is implicit.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_document_end_event_initialize(yaml_event_t *event, int implicit);--/**- * Create an ALIAS event.- *- * @param[out] event An empty event object.- * @param[in] anchor The anchor value.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_alias_event_initialize(yaml_event_t *event, const yaml_char_t *anchor);--/**- * Create a SCALAR event.- *- * The @a style argument may be ignored by the emitter.- *- * Either the @a tag attribute or one of the @a plain_implicit and- * @a quoted_implicit flags must be set.- *- * @param[out] event An empty event object.- * @param[in] anchor The scalar anchor or @c NULL.- * @param[in] tag The scalar tag or @c NULL.- * @param[in] value The scalar value.- * @param[in] length The length of the scalar value.- * @param[in] plain_implicit If the tag may be omitted for the plain- * style.- * @param[in] quoted_implicit If the tag may be omitted for any- * non-plain style.- * @param[in] style The scalar style.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_scalar_event_initialize(yaml_event_t *event,- const yaml_char_t *anchor, const yaml_char_t *tag,- const yaml_char_t *value, int length,- int plain_implicit, int quoted_implicit,- yaml_scalar_style_t style);--/**- * Create a SEQUENCE-START event.- *- * The @a style argument may be ignored by the emitter.- *- * Either the @a tag attribute or the @a implicit flag must be set.- *- * @param[out] event An empty event object.- * @param[in] anchor The sequence anchor or @c NULL.- * @param[in] tag The sequence tag or @c NULL.- * @param[in] implicit If the tag may be omitted.- * @param[in] style The sequence style.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_sequence_start_event_initialize(yaml_event_t *event,- const yaml_char_t *anchor, const yaml_char_t *tag, int implicit,- yaml_sequence_style_t style);--/**- * Create a SEQUENCE-END event.- *- * @param[out] event An empty event object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_sequence_end_event_initialize(yaml_event_t *event);--/**- * Create a MAPPING-START event.- *- * The @a style argument may be ignored by the emitter.- *- * Either the @a tag attribute or the @a implicit flag must be set.- *- * @param[out] event An empty event object.- * @param[in] anchor The mapping anchor or @c NULL.- * @param[in] tag The mapping tag or @c NULL.- * @param[in] implicit If the tag may be omitted.- * @param[in] style The mapping style.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_mapping_start_event_initialize(yaml_event_t *event,- const yaml_char_t *anchor, const yaml_char_t *tag, int implicit,- yaml_mapping_style_t style);--/**- * Create a MAPPING-END event.- *- * @param[out] event An empty event object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_mapping_end_event_initialize(yaml_event_t *event);--/**- * Free any memory allocated for an event object.- *- * @param[in,out] event An event object.- */--YAML_DECLARE(void)-yaml_event_delete(yaml_event_t *event);--/** @} */--/**- * @defgroup nodes Nodes- * @{- */--/** The tag @c !!null with the only possible value: @c null. */-#define YAML_NULL_TAG "tag:yaml.org,2002:null"-/** The tag @c !!bool with the values: @c true and @c false. */-#define YAML_BOOL_TAG "tag:yaml.org,2002:bool"-/** The tag @c !!str for string values. */-#define YAML_STR_TAG "tag:yaml.org,2002:str"-/** The tag @c !!int for integer values. */-#define YAML_INT_TAG "tag:yaml.org,2002:int"-/** The tag @c !!float for float values. */-#define YAML_FLOAT_TAG "tag:yaml.org,2002:float"-/** The tag @c !!timestamp for date and time values. */-#define YAML_TIMESTAMP_TAG "tag:yaml.org,2002:timestamp"--/** The tag @c !!seq is used to denote sequences. */-#define YAML_SEQ_TAG "tag:yaml.org,2002:seq"-/** The tag @c !!map is used to denote mapping. */-#define YAML_MAP_TAG "tag:yaml.org,2002:map"--/** The default scalar tag is @c !!str. */-#define YAML_DEFAULT_SCALAR_TAG YAML_STR_TAG-/** The default sequence tag is @c !!seq. */-#define YAML_DEFAULT_SEQUENCE_TAG YAML_SEQ_TAG-/** The default mapping tag is @c !!map. */-#define YAML_DEFAULT_MAPPING_TAG YAML_MAP_TAG--/** Node types. */-typedef enum yaml_node_type_e {- /** An empty node. */- YAML_NO_NODE,-- /** A scalar node. */- YAML_SCALAR_NODE,- /** A sequence node. */- YAML_SEQUENCE_NODE,- /** A mapping node. */- YAML_MAPPING_NODE-} yaml_node_type_t;--/** The forward definition of a document node structure. */-typedef struct yaml_node_s yaml_node_t;--/** An element of a sequence node. */-typedef int yaml_node_item_t;--/** An element of a mapping node. */-typedef struct yaml_node_pair_s {- /** The key of the element. */- int key;- /** The value of the element. */- int value;-} yaml_node_pair_t;--/** The node structure. */-struct yaml_node_s {-- /** The node type. */- yaml_node_type_t type;-- /** The node tag. */- yaml_char_t *tag;-- /** The node data. */- union {- - /** The scalar parameters (for @c YAML_SCALAR_NODE). */- struct {- /** The scalar value. */- yaml_char_t *value;- /** The length of the scalar value. */- size_t length;- /** The scalar style. */- yaml_scalar_style_t style;- } scalar;-- /** The sequence parameters (for @c YAML_SEQUENCE_NODE). */- struct {- /** The stack of sequence items. */- struct {- /** The beginning of the stack. */- yaml_node_item_t *start;- /** The end of the stack. */- yaml_node_item_t *end;- /** The top of the stack. */- yaml_node_item_t *top;- } items;- /** The sequence style. */- yaml_sequence_style_t style;- } sequence;-- /** The mapping parameters (for @c YAML_MAPPING_NODE). */- struct {- /** The stack of mapping pairs (key, value). */- struct {- /** The beginning of the stack. */- yaml_node_pair_t *start;- /** The end of the stack. */- yaml_node_pair_t *end;- /** The top of the stack. */- yaml_node_pair_t *top;- } pairs;- /** The mapping style. */- yaml_mapping_style_t style;- } mapping;-- } data;-- /** The beginning of the node. */- yaml_mark_t start_mark;- /** The end of the node. */- yaml_mark_t end_mark;--};--/** The document structure. */-typedef struct yaml_document_s {-- /** The document nodes. */- struct {- /** The beginning of the stack. */- yaml_node_t *start;- /** The end of the stack. */- yaml_node_t *end;- /** The top of the stack. */- yaml_node_t *top;- } nodes;-- /** The version directive. */- yaml_version_directive_t *version_directive;-- /** The list of tag directives. */- struct {- /** The beginning of the tag directives list. */- yaml_tag_directive_t *start;- /** The end of the tag directives list. */- yaml_tag_directive_t *end;- } tag_directives;-- /** Is the document start indicator implicit? */- int start_implicit;- /** Is the document end indicator implicit? */- int end_implicit;-- /** The beginning of the document. */- yaml_mark_t start_mark;- /** The end of the document. */- yaml_mark_t end_mark;--} yaml_document_t;--/**- * Create a YAML document.- *- * @param[out] document An empty document object.- * @param[in] version_directive The %YAML directive value or- * @c NULL.- * @param[in] tag_directives_start The beginning of the %TAG- * directives list.- * @param[in] tag_directives_end The end of the %TAG directives- * list.- * @param[in] start_implicit If the document start indicator is- * implicit.- * @param[in] end_implicit If the document end indicator is- * implicit.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_document_initialize(yaml_document_t *document,- yaml_version_directive_t *version_directive,- yaml_tag_directive_t *tag_directives_start,- yaml_tag_directive_t *tag_directives_end,- int start_implicit, int end_implicit);--/**- * Delete a YAML document and all its nodes.- *- * @param[in,out] document A document object.- */--YAML_DECLARE(void)-yaml_document_delete(yaml_document_t *document);--/**- * Get a node of a YAML document.- *- * The pointer returned by this function is valid until any of the functions- * modifying the documents are called.- *- * @param[in] document A document object.- * @param[in] index The node id.- *- * @returns the node objct or @c NULL if @c node_id is out of range.- */--YAML_DECLARE(yaml_node_t *)-yaml_document_get_node(yaml_document_t *document, int index);--/**- * Get the root of a YAML document node.- *- * The root object is the first object added to the document.- *- * The pointer returned by this function is valid until any of the functions- * modifying the documents are called.- *- * An empty document produced by the parser signifies the end of a YAML- * stream.- *- * @param[in] document A document object.- *- * @returns the node object or @c NULL if the document is empty.- */--YAML_DECLARE(yaml_node_t *)-yaml_document_get_root_node(yaml_document_t *document);--/**- * Create a SCALAR node and attach it to the document.- *- * The @a style argument may be ignored by the emitter.- *- * @param[in,out] document A document object.- * @param[in] tag The scalar tag.- * @param[in] value The scalar value.- * @param[in] length The length of the scalar value.- * @param[in] style The scalar style.- *- * @returns the node id or @c 0 on error.- */--YAML_DECLARE(int)-yaml_document_add_scalar(yaml_document_t *document,- const yaml_char_t *tag, const yaml_char_t *value, int length,- yaml_scalar_style_t style);--/**- * Create a SEQUENCE node and attach it to the document.- *- * The @a style argument may be ignored by the emitter.- *- * @param[in,out] document A document object.- * @param[in] tag The sequence tag.- * @param[in] style The sequence style.- *- * @returns the node id or @c 0 on error.- */--YAML_DECLARE(int)-yaml_document_add_sequence(yaml_document_t *document,- const yaml_char_t *tag, yaml_sequence_style_t style);--/**- * Create a MAPPING node and attach it to the document.- *- * The @a style argument may be ignored by the emitter.- *- * @param[in,out] document A document object.- * @param[in] tag The sequence tag.- * @param[in] style The sequence style.- *- * @returns the node id or @c 0 on error.- */--YAML_DECLARE(int)-yaml_document_add_mapping(yaml_document_t *document,- const yaml_char_t *tag, yaml_mapping_style_t style);--/**- * Add an item to a SEQUENCE node.- *- * @param[in,out] document A document object.- * @param[in] sequence The sequence node id.- * @param[in] item The item node id.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_document_append_sequence_item(yaml_document_t *document,- int sequence, int item);--/**- * Add a pair of a key and a value to a MAPPING node.- *- * @param[in,out] document A document object.- * @param[in] mapping The mapping node id.- * @param[in] key The key node id.- * @param[in] value The value node id.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_document_append_mapping_pair(yaml_document_t *document,- int mapping, int key, int value);--/** @} */--/**- * @defgroup parser Parser Definitions- * @{- */--/**- * The prototype of a read handler.- *- * The read handler is called when the parser needs to read more bytes from the- * source. The handler should write not more than @a size bytes to the @a- * buffer. The number of written bytes should be set to the @a length variable.- *- * @param[in,out] data A pointer to an application data specified by- * yaml_parser_set_input().- * @param[out] buffer The buffer to write the data from the source.- * @param[in] size The size of the buffer.- * @param[out] size_read The actual number of bytes read from the source.- *- * @returns On success, the handler should return @c 1. If the handler failed,- * the returned value should be @c 0. On EOF, the handler should set the- * @a size_read to @c 0 and return @c 1.- */--typedef int yaml_read_handler_t(void *data, unsigned char *buffer, size_t size,- size_t *size_read);--/**- * This structure holds information about a potential simple key.- */--typedef struct yaml_simple_key_s {- /** Is a simple key possible? */- int possible;-- /** Is a simple key required? */- int required;-- /** The number of the token. */- size_t token_number;-- /** The position mark. */- yaml_mark_t mark;-} yaml_simple_key_t;--/**- * The states of the parser.- */-typedef enum yaml_parser_state_e {- /** Expect STREAM-START. */- YAML_PARSE_STREAM_START_STATE,- /** Expect the beginning of an implicit document. */- YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE,- /** Expect DOCUMENT-START. */- YAML_PARSE_DOCUMENT_START_STATE,- /** Expect the content of a document. */- YAML_PARSE_DOCUMENT_CONTENT_STATE,- /** Expect DOCUMENT-END. */- YAML_PARSE_DOCUMENT_END_STATE,-- /** Expect a block node. */- YAML_PARSE_BLOCK_NODE_STATE,- /** Expect a block node or indentless sequence. */- YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE,- /** Expect a flow node. */- YAML_PARSE_FLOW_NODE_STATE,- /** Expect the first entry of a block sequence. */- YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE,- /** Expect an entry of a block sequence. */- YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE,-- /** Expect an entry of an indentless sequence. */- YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE,- /** Expect the first key of a block mapping. */- YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE,- /** Expect a block mapping key. */- YAML_PARSE_BLOCK_MAPPING_KEY_STATE,- /** Expect a block mapping value. */- YAML_PARSE_BLOCK_MAPPING_VALUE_STATE,- /** Expect the first entry of a flow sequence. */- YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE,-- /** Expect an entry of a flow sequence. */- YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE,- /** Expect a key of an ordered mapping. */- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE,- /** Expect a value of an ordered mapping. */- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE,- /** Expect the and of an ordered mapping entry. */- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE,- /** Expect the first key of a flow mapping. */- YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE,- /** Expect a key of a flow mapping. */-- YAML_PARSE_FLOW_MAPPING_KEY_STATE,- /** Expect a value of a flow mapping. */- YAML_PARSE_FLOW_MAPPING_VALUE_STATE,- /** Expect an empty value of a flow mapping. */- YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE,- /** Expect nothing. */- YAML_PARSE_END_STATE-} yaml_parser_state_t;--/**- * This structure holds aliases data.- */--typedef struct yaml_alias_data_s {- /** The anchor. */- yaml_char_t *anchor;- /** The node id. */- int index;- /** The anchor mark. */- yaml_mark_t mark;-} yaml_alias_data_t;--/**- * The parser structure.- *- * All members are internal. Manage the structure using the @c yaml_parser_- * family of functions.- */--typedef struct yaml_parser_s {-- /**- * @name Error handling- * @{- */-- /** Error type. */- yaml_error_type_t error;- /** Error description. */- const char *problem;- /** The byte about which the problem occured. */- size_t problem_offset;- /** The problematic value (@c -1 is none). */- int problem_value;- /** The problem position. */- yaml_mark_t problem_mark;- /** The error context. */- const char *context;- /** The context position. */- yaml_mark_t context_mark;-- /**- * @}- */-- /**- * @name Reader stuff- * @{- */-- /** Read handler. */- yaml_read_handler_t *read_handler;-- /** A pointer for passing to the read handler. */- void *read_handler_data;-- /** Standard (string or file) input data. */- union {- /** String input data. */- struct {- /** The string start pointer. */- const unsigned char *start;- /** The string end pointer. */- const unsigned char *end;- /** The string current position. */- const unsigned char *current;- } string;-- /** File input data. */- FILE *file;- } input;-- /** EOF flag */- int eof;-- /** The working buffer. */- struct {- /** The beginning of the buffer. */- yaml_char_t *start;- /** The end of the buffer. */- yaml_char_t *end;- /** The current position of the buffer. */- yaml_char_t *pointer;- /** The last filled position of the buffer. */- yaml_char_t *last;- } buffer;-- /* The number of unread characters in the buffer. */- size_t unread;-- /** The raw buffer. */- struct {- /** The beginning of the buffer. */- unsigned char *start;- /** The end of the buffer. */- unsigned char *end;- /** The current position of the buffer. */- unsigned char *pointer;- /** The last filled position of the buffer. */- unsigned char *last;- } raw_buffer;-- /** The input encoding. */- yaml_encoding_t encoding;-- /** The offset of the current position (in bytes). */- size_t offset;-- /** The mark of the current position. */- yaml_mark_t mark;-- /**- * @}- */-- /**- * @name Scanner stuff- * @{- */-- /** Have we started to scan the input stream? */- int stream_start_produced;-- /** Have we reached the end of the input stream? */- int stream_end_produced;-- /** The number of unclosed '[' and '{' indicators. */- int flow_level;-- /** The tokens queue. */- struct {- /** The beginning of the tokens queue. */- yaml_token_t *start;- /** The end of the tokens queue. */- yaml_token_t *end;- /** The head of the tokens queue. */- yaml_token_t *head;- /** The tail of the tokens queue. */- yaml_token_t *tail;- } tokens;-- /** The number of tokens fetched from the queue. */- size_t tokens_parsed;-- /** Does the tokens queue contain a token ready for dequeueing. */- int token_available;-- /** The indentation levels stack. */- struct {- /** The beginning of the stack. */- int *start;- /** The end of the stack. */- int *end;- /** The top of the stack. */- int *top;- } indents;-- /** The current indentation level. */- int indent;-- /** May a simple key occur at the current position? */- int simple_key_allowed;-- /** The stack of simple keys. */- struct {- /** The beginning of the stack. */- yaml_simple_key_t *start;- /** The end of the stack. */- yaml_simple_key_t *end;- /** The top of the stack. */- yaml_simple_key_t *top;- } simple_keys;-- /**- * @}- */-- /**- * @name Parser stuff- * @{- */-- /** The parser states stack. */- struct {- /** The beginning of the stack. */- yaml_parser_state_t *start;- /** The end of the stack. */- yaml_parser_state_t *end;- /** The top of the stack. */- yaml_parser_state_t *top;- } states;-- /** The current parser state. */- yaml_parser_state_t state;-- /** The stack of marks. */- struct {- /** The beginning of the stack. */- yaml_mark_t *start;- /** The end of the stack. */- yaml_mark_t *end;- /** The top of the stack. */- yaml_mark_t *top;- } marks;-- /** The list of TAG directives. */- struct {- /** The beginning of the list. */- yaml_tag_directive_t *start;- /** The end of the list. */- yaml_tag_directive_t *end;- /** The top of the list. */- yaml_tag_directive_t *top;- } tag_directives;-- /**- * @}- */-- /**- * @name Dumper stuff- * @{- */-- /** The alias data. */- struct {- /** The beginning of the list. */- yaml_alias_data_t *start;- /** The end of the list. */- yaml_alias_data_t *end;- /** The top of the list. */- yaml_alias_data_t *top;- } aliases;-- /** The currently parsed document. */- yaml_document_t *document;-- /**- * @}- */--} yaml_parser_t;--/**- * Initialize a parser.- *- * This function creates a new parser object. An application is responsible- * for destroying the object using the yaml_parser_delete() function.- *- * @param[out] parser An empty parser object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_parser_initialize(yaml_parser_t *parser);--/**- * Destroy a parser.- *- * @param[in,out] parser A parser object.- */--YAML_DECLARE(void)-yaml_parser_delete(yaml_parser_t *parser);--/**- * Set a string input.- *- * Note that the @a input pointer must be valid while the @a parser object- * exists. The application is responsible for destroing @a input after- * destroying the @a parser.- *- * @param[in,out] parser A parser object.- * @param[in] input A source data.- * @param[in] size The length of the source data in bytes.- */--YAML_DECLARE(void)-yaml_parser_set_input_string(yaml_parser_t *parser,- const unsigned char *input, size_t size);--/**- * Set a file input.- *- * @a file should be a file object open for reading. The application is- * responsible for closing the @a file.- *- * @param[in,out] parser A parser object.- * @param[in] file An open file.- */--YAML_DECLARE(void)-yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file);--/**- * Set a generic input handler.- *- * @param[in,out] parser A parser object.- * @param[in] handler A read handler.- * @param[in] data Any application data for passing to the read- * handler.- */--YAML_DECLARE(void)-yaml_parser_set_input(yaml_parser_t *parser,- yaml_read_handler_t *handler, void *data);--/**- * Set the source encoding.- *- * @param[in,out] parser A parser object.- * @param[in] encoding The source encoding.- */--YAML_DECLARE(void)-yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding);--/**- * Scan the input stream and produce the next token.- *- * Call the function subsequently to produce a sequence of tokens corresponding- * to the input stream. The initial token has the type- * @c YAML_STREAM_START_TOKEN while the ending token has the type- * @c YAML_STREAM_END_TOKEN.- *- * An application is responsible for freeing any buffers associated with the- * produced token object using the @c yaml_token_delete function.- *- * An application must not alternate the calls of yaml_parser_scan() with the- * calls of yaml_parser_parse() or yaml_parser_load(). Doing this will break- * the parser.- *- * @param[in,out] parser A parser object.- * @param[out] token An empty token object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token);--/**- * Parse the input stream and produce the next parsing event.- *- * Call the function subsequently to produce a sequence of events corresponding- * to the input stream. The initial event has the type- * @c YAML_STREAM_START_EVENT while the ending event has the type- * @c YAML_STREAM_END_EVENT.- *- * An application is responsible for freeing any buffers associated with the- * produced event object using the yaml_event_delete() function.- *- * An application must not alternate the calls of yaml_parser_parse() with the- * calls of yaml_parser_scan() or yaml_parser_load(). Doing this will break the- * parser.- *- * @param[in,out] parser A parser object.- * @param[out] event An empty event object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event);--/**- * Parse the input stream and produce the next YAML document.- *- * Call this function subsequently to produce a sequence of documents- * constituting the input stream.- *- * If the produced document has no root node, it means that the document- * end has been reached.- *- * An application is responsible for freeing any data associated with the- * produced document object using the yaml_document_delete() function.- *- * An application must not alternate the calls of yaml_parser_load() with the- * calls of yaml_parser_scan() or yaml_parser_parse(). Doing this will break- * the parser.- *- * @param[in,out] parser A parser object.- * @param[out] document An empty document object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document);--/** @} */--/**- * @defgroup emitter Emitter Definitions- * @{- */--/**- * The prototype of a write handler.- *- * The write handler is called when the emitter needs to flush the accumulated- * characters to the output. The handler should write @a size bytes of the- * @a buffer to the output.- *- * @param[in,out] data A pointer to an application data specified by- * yaml_emitter_set_output().- * @param[in] buffer The buffer with bytes to be written.- * @param[in] size The size of the buffer.- *- * @returns On success, the handler should return @c 1. If the handler failed,- * the returned value should be @c 0.- */--typedef int yaml_write_handler_t(void *data, unsigned char *buffer, size_t size);--/** The emitter states. */-typedef enum yaml_emitter_state_e {- /** Expect STREAM-START. */- YAML_EMIT_STREAM_START_STATE,- /** Expect the first DOCUMENT-START or STREAM-END. */- YAML_EMIT_FIRST_DOCUMENT_START_STATE,- /** Expect DOCUMENT-START or STREAM-END. */- YAML_EMIT_DOCUMENT_START_STATE,- /** Expect the content of a document. */- YAML_EMIT_DOCUMENT_CONTENT_STATE,- /** Expect DOCUMENT-END. */- YAML_EMIT_DOCUMENT_END_STATE,-- /** Expect the first item of a flow sequence. */- YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE,- /** Expect an item of a flow sequence. */- YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE,- /** Expect the first key of a flow mapping. */- YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE,- /** Expect a key of a flow mapping. */- YAML_EMIT_FLOW_MAPPING_KEY_STATE,- /** Expect a value for a simple key of a flow mapping. */- YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE,-- /** Expect a value of a flow mapping. */- YAML_EMIT_FLOW_MAPPING_VALUE_STATE,- /** Expect the first item of a block sequence. */- YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE,- /** Expect an item of a block sequence. */- YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE,- /** Expect the first key of a block mapping. */- YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE,- /** Expect the key of a block mapping. */- YAML_EMIT_BLOCK_MAPPING_KEY_STATE,-- /** Expect a value for a simple key of a block mapping. */- YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE,- /** Expect a value of a block mapping. */- YAML_EMIT_BLOCK_MAPPING_VALUE_STATE,- /** Expect nothing. */- YAML_EMIT_END_STATE-} yaml_emitter_state_t;---/* This is needed for C++ */--typedef struct yaml_anchors_s {- /** The number of references. */- int references;- /** The anchor id. */- int anchor;- /** If the node has been emitted? */- int serialized;-} yaml_anchors_t;--/**- * The emitter structure.- *- * All members are internal. Manage the structure using the @c yaml_emitter_- * family of functions.- */--typedef struct yaml_emitter_s {-- /**- * @name Error handling- * @{- */-- /** Error type. */- yaml_error_type_t error;- /** Error description. */- const char *problem;-- /**- * @}- */-- /**- * @name Writer stuff- * @{- */-- /** Write handler. */- yaml_write_handler_t *write_handler;-- /** A pointer for passing to the write handler. */- void *write_handler_data;-- /** Standard (string or file) output data. */- union {- /** String output data. */- struct {- /** The buffer pointer. */- unsigned char *buffer;- /** The buffer size. */- size_t size;- /** The number of written bytes. */- size_t *size_written;- } string;-- /** File output data. */- FILE *file;- } output;-- /** The working buffer. */- struct {- /** The beginning of the buffer. */- yaml_char_t *start;- /** The end of the buffer. */- yaml_char_t *end;- /** The current position of the buffer. */- yaml_char_t *pointer;- /** The last filled position of the buffer. */- yaml_char_t *last;- } buffer;-- /** The raw buffer. */- struct {- /** The beginning of the buffer. */- unsigned char *start;- /** The end of the buffer. */- unsigned char *end;- /** The current position of the buffer. */- unsigned char *pointer;- /** The last filled position of the buffer. */- unsigned char *last;- } raw_buffer;-- /** The stream encoding. */- yaml_encoding_t encoding;-- /**- * @}- */-- /**- * @name Emitter stuff- * @{- */-- /** If the output is in the canonical style? */- int canonical;- /** The number of indentation spaces. */- int best_indent;- /** The preferred width of the output lines. */- int best_width;- /** Allow unescaped non-ASCII characters? */- int unicode;- /** The preferred line break. */- yaml_break_t line_break;-- /** The stack of states. */- struct {- /** The beginning of the stack. */- yaml_emitter_state_t *start;- /** The end of the stack. */- yaml_emitter_state_t *end;- /** The top of the stack. */- yaml_emitter_state_t *top;- } states;-- /** The current emitter state. */- yaml_emitter_state_t state;-- /** The event queue. */- struct {- /** The beginning of the event queue. */- yaml_event_t *start;- /** The end of the event queue. */- yaml_event_t *end;- /** The head of the event queue. */- yaml_event_t *head;- /** The tail of the event queue. */- yaml_event_t *tail;- } events;-- /** The stack of indentation levels. */- struct {- /** The beginning of the stack. */- int *start;- /** The end of the stack. */- int *end;- /** The top of the stack. */- int *top;- } indents;-- /** The list of tag directives. */- struct {- /** The beginning of the list. */- yaml_tag_directive_t *start;- /** The end of the list. */- yaml_tag_directive_t *end;- /** The top of the list. */- yaml_tag_directive_t *top;- } tag_directives;-- /** The current indentation level. */- int indent;-- /** The current flow level. */- int flow_level;-- /** Is it the document root context? */- int root_context;- /** Is it a sequence context? */- int sequence_context;- /** Is it a mapping context? */- int mapping_context;- /** Is it a simple mapping key context? */- int simple_key_context;-- /** The current line. */- int line;- /** The current column. */- int column;- /** If the last character was a whitespace? */- int whitespace;- /** If the last character was an indentation character (' ', '-', '?', ':')? */- int indention;- /** If an explicit document end is required? */- int open_ended;-- /** Anchor analysis. */- struct {- /** The anchor value. */- yaml_char_t *anchor;- /** The anchor length. */- size_t anchor_length;- /** Is it an alias? */- int alias;- } anchor_data;-- /** Tag analysis. */- struct {- /** The tag handle. */- yaml_char_t *handle;- /** The tag handle length. */- size_t handle_length;- /** The tag suffix. */- yaml_char_t *suffix;- /** The tag suffix length. */- size_t suffix_length;- } tag_data;-- /** Scalar analysis. */- struct {- /** The scalar value. */- yaml_char_t *value;- /** The scalar length. */- size_t length;- /** Does the scalar contain line breaks? */- int multiline;- /** Can the scalar be expessed in the flow plain style? */- int flow_plain_allowed;- /** Can the scalar be expressed in the block plain style? */- int block_plain_allowed;- /** Can the scalar be expressed in the single quoted style? */- int single_quoted_allowed;- /** Can the scalar be expressed in the literal or folded styles? */- int block_allowed;- /** The output style. */- yaml_scalar_style_t style;- } scalar_data;-- /**- * @}- */-- /**- * @name Dumper stuff- * @{- */-- /** If the stream was already opened? */- int opened;- /** If the stream was already closed? */- int closed;-- /** The information associated with the document nodes. */- yaml_anchors_t *anchors;-- /** The last assigned anchor id. */- int last_anchor_id;-- /** The currently emitted document. */- yaml_document_t *document;-- /**- * @}- */--} yaml_emitter_t;--/**- * Initialize an emitter.- *- * This function creates a new emitter object. An application is responsible- * for destroying the object using the yaml_emitter_delete() function.- *- * @param[out] emitter An empty parser object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_emitter_initialize(yaml_emitter_t *emitter);--/**- * Destroy an emitter.- *- * @param[in,out] emitter An emitter object.- */--YAML_DECLARE(void)-yaml_emitter_delete(yaml_emitter_t *emitter);--/**- * Set a string output.- *- * The emitter will write the output characters to the @a output buffer of the- * size @a size. The emitter will set @a size_written to the number of written- * bytes. If the buffer is smaller than required, the emitter produces the- * YAML_WRITE_ERROR error.- *- * @param[in,out] emitter An emitter object.- * @param[in] output An output buffer.- * @param[in] size The buffer size.- * @param[in] size_written The pointer to save the number of written- * bytes.- */--YAML_DECLARE(void)-yaml_emitter_set_output_string(yaml_emitter_t *emitter,- unsigned char *output, size_t size, size_t *size_written);--/**- * Set a file output.- *- * @a file should be a file object open for writing. The application is- * responsible for closing the @a file.- *- * @param[in,out] emitter An emitter object.- * @param[in] file An open file.- */--YAML_DECLARE(void)-yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file);--/**- * Set a generic output handler.- *- * @param[in,out] emitter An emitter object.- * @param[in] handler A write handler.- * @param[in] data Any application data for passing to the write- * handler.- */--YAML_DECLARE(void)-yaml_emitter_set_output(yaml_emitter_t *emitter,- yaml_write_handler_t *handler, void *data);--/**- * Set the output encoding.- *- * @param[in,out] emitter An emitter object.- * @param[in] encoding The output encoding.- */--YAML_DECLARE(void)-yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding);--/**- * Set if the output should be in the "canonical" format as in the YAML- * specification.- *- * @param[in,out] emitter An emitter object.- * @param[in] canonical If the output is canonical.- */--YAML_DECLARE(void)-yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical);--/**- * Set the indentation increment.- *- * @param[in,out] emitter An emitter object.- * @param[in] indent The indentation increment (1 < . < 10).- */--YAML_DECLARE(void)-yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent);--/**- * Set the preferred line width. @c -1 means unlimited.- *- * @param[in,out] emitter An emitter object.- * @param[in] width The preferred line width.- */--YAML_DECLARE(void)-yaml_emitter_set_width(yaml_emitter_t *emitter, int width);--/**- * Set if unescaped non-ASCII characters are allowed.- *- * @param[in,out] emitter An emitter object.- * @param[in] unicode If unescaped Unicode characters are allowed.- */--YAML_DECLARE(void)-yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode);--/**- * Set the preferred line break.- *- * @param[in,out] emitter An emitter object.- * @param[in] line_break The preferred line break.- */--YAML_DECLARE(void)-yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break);--/**- * Emit an event.- *- * The event object may be generated using the yaml_parser_parse() function.- * The emitter takes the responsibility for the event object and destroys its- * content after it is emitted. The event object is destroyed even if the- * function fails.- *- * @param[in,out] emitter An emitter object.- * @param[in,out] event An event object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);--/**- * Start a YAML stream.- *- * This function should be used before yaml_emitter_dump() is called.- *- * @param[in,out] emitter An emitter object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_emitter_open(yaml_emitter_t *emitter);--/**- * Finish a YAML stream.- *- * This function should be used after yaml_emitter_dump() is called.- *- * @param[in,out] emitter An emitter object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_emitter_close(yaml_emitter_t *emitter);--/**- * Emit a YAML document.- *- * The documen object may be generated using the yaml_parser_load() function- * or the yaml_document_initialize() function. The emitter takes the- * responsibility for the document object and destroys its content after- * it is emitted. The document object is destroyed even if the function fails.- *- * @param[in,out] emitter An emitter object.- * @param[in,out] document A document object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document);--/**- * Flush the accumulated characters to the output.- *- * @param[in,out] emitter An emitter object.- *- * @returns @c 1 if the function succeeded, @c 0 on error.- */--YAML_DECLARE(int)-yaml_emitter_flush(yaml_emitter_t *emitter);--/** @} */--#ifdef __cplusplus-}-#endif--#endif /* #ifndef YAML_H */-
− libyaml_src/yaml_private.h
@@ -1,690 +0,0 @@-#if HAVE_CONFIG_H-#include "config.h"-#endif--#include <yaml.h>--#include <assert.h>-#include <limits.h>-#include <stddef.h>--/*- * Memory management.- */--YAML_DECLARE(void *)-yaml_malloc(size_t size);--YAML_DECLARE(void *)-yaml_realloc(void *ptr, size_t size);--YAML_DECLARE(void)-yaml_free(void *ptr);--YAML_DECLARE(yaml_char_t *)-yaml_strdup(const yaml_char_t *);--/*- * Reader: Ensure that the buffer contains at least `length` characters.- */--YAML_DECLARE(int)-yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);--/*- * Scanner: Ensure that the token stack contains at least one token ready.- */--YAML_DECLARE(int)-yaml_parser_fetch_more_tokens(yaml_parser_t *parser);--/*- * The size of the input raw buffer.- */--#define INPUT_RAW_BUFFER_SIZE 16384--/*- * The size of the input buffer.- *- * It should be possible to decode the whole raw buffer.- */--#define INPUT_BUFFER_SIZE (INPUT_RAW_BUFFER_SIZE*3)--/*- * The size of the output buffer.- */--#define OUTPUT_BUFFER_SIZE 16384--/*- * The size of the output raw buffer.- *- * It should be possible to encode the whole output buffer.- */--#define OUTPUT_RAW_BUFFER_SIZE (OUTPUT_BUFFER_SIZE*2+2)--/*- * The maximum size of a YAML input file.- * This used to be PTRDIFF_MAX, but that's not entirely portable- * because stdint.h isn't available on all platforms.- * It is not entirely clear why this isn't the maximum value- * that can fit into the parser->offset field.- */--#define MAX_FILE_SIZE (~(size_t)0 / 2)---/*- * The size of other stacks and queues.- */--#define INITIAL_STACK_SIZE 16-#define INITIAL_QUEUE_SIZE 16-#define INITIAL_STRING_SIZE 16--/*- * Buffer management.- */--#define BUFFER_INIT(context,buffer,size) \- (((buffer).start = (yaml_char_t *)yaml_malloc(size)) ? \- ((buffer).last = (buffer).pointer = (buffer).start, \- (buffer).end = (buffer).start+(size), \- 1) : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--#define BUFFER_DEL(context,buffer) \- (yaml_free((buffer).start), \- (buffer).start = (buffer).pointer = (buffer).end = 0)--/*- * String management.- */--typedef struct {- yaml_char_t *start;- yaml_char_t *end;- yaml_char_t *pointer;-} yaml_string_t;--YAML_DECLARE(int)-yaml_string_extend(yaml_char_t **start,- yaml_char_t **pointer, yaml_char_t **end);--YAML_DECLARE(int)-yaml_string_join(- yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,- yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end);--#define NULL_STRING { NULL, NULL, NULL }--#define STRING(string,length) { (string), (string)+(length), (string) }--#define STRING_ASSIGN(value,string,length) \- ((value).start = (string), \- (value).end = (string)+(length), \- (value).pointer = (string))--#define STRING_INIT(context,string,size) \- (((string).start = YAML_MALLOC(size)) ? \- ((string).pointer = (string).start, \- (string).end = (string).start+(size), \- memset((string).start, 0, (size)), \- 1) : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--#define STRING_DEL(context,string) \- (yaml_free((string).start), \- (string).start = (string).pointer = (string).end = 0)--#define STRING_EXTEND(context,string) \- ((((string).pointer+5 < (string).end) \- || yaml_string_extend(&(string).start, \- &(string).pointer, &(string).end)) ? \- 1 : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--#define CLEAR(context,string) \- ((string).pointer = (string).start, \- memset((string).start, 0, (string).end-(string).start))--#define JOIN(context,string_a,string_b) \- ((yaml_string_join(&(string_a).start, &(string_a).pointer, \- &(string_a).end, &(string_b).start, \- &(string_b).pointer, &(string_b).end)) ? \- ((string_b).pointer = (string_b).start, \- 1) : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--/*- * String check operations.- */--/*- * Check the octet at the specified position.- */--#define CHECK_AT(string,octet,offset) \- ((string).pointer[offset] == (yaml_char_t)(octet))--/*- * Check the current octet in the buffer.- */--#define CHECK(string,octet) (CHECK_AT((string),(octet),0))--/*- * Check if the character at the specified position is an alphabetical- * character, a digit, '_', or '-'.- */--#define IS_ALPHA_AT(string,offset) \- (((string).pointer[offset] >= (yaml_char_t) '0' && \- (string).pointer[offset] <= (yaml_char_t) '9') || \- ((string).pointer[offset] >= (yaml_char_t) 'A' && \- (string).pointer[offset] <= (yaml_char_t) 'Z') || \- ((string).pointer[offset] >= (yaml_char_t) 'a' && \- (string).pointer[offset] <= (yaml_char_t) 'z') || \- (string).pointer[offset] == '_' || \- (string).pointer[offset] == '-')--#define IS_ALPHA(string) IS_ALPHA_AT((string),0)--/*- * Check if the character at the specified position is a digit.- */--#define IS_DIGIT_AT(string,offset) \- (((string).pointer[offset] >= (yaml_char_t) '0' && \- (string).pointer[offset] <= (yaml_char_t) '9'))--#define IS_DIGIT(string) IS_DIGIT_AT((string),0)--/*- * Get the value of a digit.- */--#define AS_DIGIT_AT(string,offset) \- ((string).pointer[offset] - (yaml_char_t) '0')--#define AS_DIGIT(string) AS_DIGIT_AT((string),0)--/*- * Check if the character at the specified position is a hex-digit.- */--#define IS_HEX_AT(string,offset) \- (((string).pointer[offset] >= (yaml_char_t) '0' && \- (string).pointer[offset] <= (yaml_char_t) '9') || \- ((string).pointer[offset] >= (yaml_char_t) 'A' && \- (string).pointer[offset] <= (yaml_char_t) 'F') || \- ((string).pointer[offset] >= (yaml_char_t) 'a' && \- (string).pointer[offset] <= (yaml_char_t) 'f'))--#define IS_HEX(string) IS_HEX_AT((string),0)--/*- * Get the value of a hex-digit.- */--#define AS_HEX_AT(string,offset) \- (((string).pointer[offset] >= (yaml_char_t) 'A' && \- (string).pointer[offset] <= (yaml_char_t) 'F') ? \- ((string).pointer[offset] - (yaml_char_t) 'A' + 10) : \- ((string).pointer[offset] >= (yaml_char_t) 'a' && \- (string).pointer[offset] <= (yaml_char_t) 'f') ? \- ((string).pointer[offset] - (yaml_char_t) 'a' + 10) : \- ((string).pointer[offset] - (yaml_char_t) '0'))--#define AS_HEX(string) AS_HEX_AT((string),0)--/*- * Check if the character is ASCII.- */--#define IS_ASCII_AT(string,offset) \- ((string).pointer[offset] <= (yaml_char_t) '\x7F')--#define IS_ASCII(string) IS_ASCII_AT((string),0)--/*- * Check if the character can be printed unescaped.- */--#define IS_PRINTABLE_AT(string,offset) \- (((string).pointer[offset] == 0x0A) /* . == #x0A */ \- || ((string).pointer[offset] >= 0x20 /* #x20 <= . <= #x7E */ \- && (string).pointer[offset] <= 0x7E) \- || ((string).pointer[offset] == 0xC2 /* #0xA0 <= . <= #xD7FF */ \- && (string).pointer[offset+1] >= 0xA0) \- || ((string).pointer[offset] > 0xC2 \- && (string).pointer[offset] < 0xED) \- || ((string).pointer[offset] == 0xED \- && (string).pointer[offset+1] < 0xA0) \- || ((string).pointer[offset] == 0xEE) \- || ((string).pointer[offset] == 0xEF /* #xE000 <= . <= #xFFFD */ \- && !((string).pointer[offset+1] == 0xBB /* && . != #xFEFF */ \- && (string).pointer[offset+2] == 0xBF) \- && !((string).pointer[offset+1] == 0xBF \- && ((string).pointer[offset+2] == 0xBE \- || (string).pointer[offset+2] == 0xBF))))--#define IS_PRINTABLE(string) IS_PRINTABLE_AT((string),0)--/*- * Check if the character at the specified position is NUL.- */--#define IS_Z_AT(string,offset) CHECK_AT((string),'\0',(offset))--#define IS_Z(string) IS_Z_AT((string),0)--/*- * Check if the character at the specified position is BOM.- */--#define IS_BOM_AT(string,offset) \- (CHECK_AT((string),'\xEF',(offset)) \- && CHECK_AT((string),'\xBB',(offset)+1) \- && CHECK_AT((string),'\xBF',(offset)+2)) /* BOM (#xFEFF) */--#define IS_BOM(string) IS_BOM_AT(string,0)--/*- * Check if the character at the specified position is space.- */--#define IS_SPACE_AT(string,offset) CHECK_AT((string),' ',(offset))--#define IS_SPACE(string) IS_SPACE_AT((string),0)--/*- * Check if the character at the specified position is tab.- */--#define IS_TAB_AT(string,offset) CHECK_AT((string),'\t',(offset))--#define IS_TAB(string) IS_TAB_AT((string),0)--/*- * Check if the character at the specified position is blank (space or tab).- */--#define IS_BLANK_AT(string,offset) \- (IS_SPACE_AT((string),(offset)) || IS_TAB_AT((string),(offset)))--#define IS_BLANK(string) IS_BLANK_AT((string),0)--/*- * Check if the character at the specified position is a line break.- */--#define IS_BREAK_AT(string,offset) \- (CHECK_AT((string),'\r',(offset)) /* CR (#xD)*/ \- || CHECK_AT((string),'\n',(offset)) /* LF (#xA) */ \- || (CHECK_AT((string),'\xC2',(offset)) \- && CHECK_AT((string),'\x85',(offset)+1)) /* NEL (#x85) */ \- || (CHECK_AT((string),'\xE2',(offset)) \- && CHECK_AT((string),'\x80',(offset)+1) \- && CHECK_AT((string),'\xA8',(offset)+2)) /* LS (#x2028) */ \- || (CHECK_AT((string),'\xE2',(offset)) \- && CHECK_AT((string),'\x80',(offset)+1) \- && CHECK_AT((string),'\xA9',(offset)+2))) /* PS (#x2029) */--#define IS_BREAK(string) IS_BREAK_AT((string),0)--#define IS_CRLF_AT(string,offset) \- (CHECK_AT((string),'\r',(offset)) && CHECK_AT((string),'\n',(offset)+1))--#define IS_CRLF(string) IS_CRLF_AT((string),0)--/*- * Check if the character is a line break or NUL.- */--#define IS_BREAKZ_AT(string,offset) \- (IS_BREAK_AT((string),(offset)) || IS_Z_AT((string),(offset)))--#define IS_BREAKZ(string) IS_BREAKZ_AT((string),0)--/*- * Check if the character is a line break, space, or NUL.- */--#define IS_SPACEZ_AT(string,offset) \- (IS_SPACE_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))--#define IS_SPACEZ(string) IS_SPACEZ_AT((string),0)--/*- * Check if the character is a line break, space, tab, or NUL.- */--#define IS_BLANKZ_AT(string,offset) \- (IS_BLANK_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))--#define IS_BLANKZ(string) IS_BLANKZ_AT((string),0)--/*- * Determine the width of the character.- */--#define WIDTH_AT(string,offset) \- (((string).pointer[offset] & 0x80) == 0x00 ? 1 : \- ((string).pointer[offset] & 0xE0) == 0xC0 ? 2 : \- ((string).pointer[offset] & 0xF0) == 0xE0 ? 3 : \- ((string).pointer[offset] & 0xF8) == 0xF0 ? 4 : 0)--#define WIDTH(string) WIDTH_AT((string),0)--/*- * Move the string pointer to the next character.- */--#define MOVE(string) ((string).pointer += WIDTH((string)))--/*- * Copy a character and move the pointers of both strings.- */--#define COPY(string_a,string_b) \- ((*(string_b).pointer & 0x80) == 0x00 ? \- (*((string_a).pointer++) = *((string_b).pointer++)) : \- (*(string_b).pointer & 0xE0) == 0xC0 ? \- (*((string_a).pointer++) = *((string_b).pointer++), \- *((string_a).pointer++) = *((string_b).pointer++)) : \- (*(string_b).pointer & 0xF0) == 0xE0 ? \- (*((string_a).pointer++) = *((string_b).pointer++), \- *((string_a).pointer++) = *((string_b).pointer++), \- *((string_a).pointer++) = *((string_b).pointer++)) : \- (*(string_b).pointer & 0xF8) == 0xF0 ? \- (*((string_a).pointer++) = *((string_b).pointer++), \- *((string_a).pointer++) = *((string_b).pointer++), \- *((string_a).pointer++) = *((string_b).pointer++), \- *((string_a).pointer++) = *((string_b).pointer++)) : 0)--/*- * Stack and queue management.- */--YAML_DECLARE(int)-yaml_stack_extend(void **start, void **top, void **end);--YAML_DECLARE(int)-yaml_queue_extend(void **start, void **head, void **tail, void **end);--#define STACK_INIT(context,stack,type) \- (((stack).start = (type)yaml_malloc(INITIAL_STACK_SIZE*sizeof(*(stack).start))) ? \- ((stack).top = (stack).start, \- (stack).end = (stack).start+INITIAL_STACK_SIZE, \- 1) : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--#define STACK_DEL(context,stack) \- (yaml_free((stack).start), \- (stack).start = (stack).top = (stack).end = 0)--#define STACK_EMPTY(context,stack) \- ((stack).start == (stack).top)--#define STACK_LIMIT(context,stack,size) \- ((stack).top - (stack).start < (size) ? \- 1 : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--#define PUSH(context,stack,value) \- (((stack).top != (stack).end \- || yaml_stack_extend((void **)&(stack).start, \- (void **)&(stack).top, (void **)&(stack).end)) ? \- (*((stack).top++) = value, \- 1) : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--#define POP(context,stack) \- (*(--(stack).top))--#define QUEUE_INIT(context,queue,size,type) \- (((queue).start = (type)yaml_malloc((size)*sizeof(*(queue).start))) ? \- ((queue).head = (queue).tail = (queue).start, \- (queue).end = (queue).start+(size), \- 1) : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--#define QUEUE_DEL(context,queue) \- (yaml_free((queue).start), \- (queue).start = (queue).head = (queue).tail = (queue).end = 0)--#define QUEUE_EMPTY(context,queue) \- ((queue).head == (queue).tail)--#define ENQUEUE(context,queue,value) \- (((queue).tail != (queue).end \- || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head, \- (void **)&(queue).tail, (void **)&(queue).end)) ? \- (*((queue).tail++) = value, \- 1) : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--#define DEQUEUE(context,queue) \- (*((queue).head++))--#define QUEUE_INSERT(context,queue,index,value) \- (((queue).tail != (queue).end \- || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head, \- (void **)&(queue).tail, (void **)&(queue).end)) ? \- (memmove((queue).head+(index)+1,(queue).head+(index), \- ((queue).tail-(queue).head-(index))*sizeof(*(queue).start)), \- *((queue).head+(index)) = value, \- (queue).tail++, \- 1) : \- ((context)->error = YAML_MEMORY_ERROR, \- 0))--/*- * Token initializers.- */--#define TOKEN_INIT(token,token_type,token_start_mark,token_end_mark) \- (memset(&(token), 0, sizeof(yaml_token_t)), \- (token).type = (token_type), \- (token).start_mark = (token_start_mark), \- (token).end_mark = (token_end_mark))--#define STREAM_START_TOKEN_INIT(token,token_encoding,start_mark,end_mark) \- (TOKEN_INIT((token),YAML_STREAM_START_TOKEN,(start_mark),(end_mark)), \- (token).data.stream_start.encoding = (token_encoding))--#define STREAM_END_TOKEN_INIT(token,start_mark,end_mark) \- (TOKEN_INIT((token),YAML_STREAM_END_TOKEN,(start_mark),(end_mark)))--#define ALIAS_TOKEN_INIT(token,token_value,start_mark,end_mark) \- (TOKEN_INIT((token),YAML_ALIAS_TOKEN,(start_mark),(end_mark)), \- (token).data.alias.value = (token_value))--#define ANCHOR_TOKEN_INIT(token,token_value,start_mark,end_mark) \- (TOKEN_INIT((token),YAML_ANCHOR_TOKEN,(start_mark),(end_mark)), \- (token).data.anchor.value = (token_value))--#define TAG_TOKEN_INIT(token,token_handle,token_suffix,start_mark,end_mark) \- (TOKEN_INIT((token),YAML_TAG_TOKEN,(start_mark),(end_mark)), \- (token).data.tag.handle = (token_handle), \- (token).data.tag.suffix = (token_suffix))--#define SCALAR_TOKEN_INIT(token,token_value,token_length,token_style,start_mark,end_mark) \- (TOKEN_INIT((token),YAML_SCALAR_TOKEN,(start_mark),(end_mark)), \- (token).data.scalar.value = (token_value), \- (token).data.scalar.length = (token_length), \- (token).data.scalar.style = (token_style))--#define VERSION_DIRECTIVE_TOKEN_INIT(token,token_major,token_minor,start_mark,end_mark) \- (TOKEN_INIT((token),YAML_VERSION_DIRECTIVE_TOKEN,(start_mark),(end_mark)), \- (token).data.version_directive.major = (token_major), \- (token).data.version_directive.minor = (token_minor))--#define TAG_DIRECTIVE_TOKEN_INIT(token,token_handle,token_prefix,start_mark,end_mark) \- (TOKEN_INIT((token),YAML_TAG_DIRECTIVE_TOKEN,(start_mark),(end_mark)), \- (token).data.tag_directive.handle = (token_handle), \- (token).data.tag_directive.prefix = (token_prefix))--/*- * Event initializers.- */--#define EVENT_INIT(event,event_type,event_start_mark,event_end_mark) \- (memset(&(event), 0, sizeof(yaml_event_t)), \- (event).type = (event_type), \- (event).start_mark = (event_start_mark), \- (event).end_mark = (event_end_mark))--#define STREAM_START_EVENT_INIT(event,event_encoding,start_mark,end_mark) \- (EVENT_INIT((event),YAML_STREAM_START_EVENT,(start_mark),(end_mark)), \- (event).data.stream_start.encoding = (event_encoding))--#define STREAM_END_EVENT_INIT(event,start_mark,end_mark) \- (EVENT_INIT((event),YAML_STREAM_END_EVENT,(start_mark),(end_mark)))--#define DOCUMENT_START_EVENT_INIT(event,event_version_directive, \- event_tag_directives_start,event_tag_directives_end,event_implicit,start_mark,end_mark) \- (EVENT_INIT((event),YAML_DOCUMENT_START_EVENT,(start_mark),(end_mark)), \- (event).data.document_start.version_directive = (event_version_directive), \- (event).data.document_start.tag_directives.start = (event_tag_directives_start), \- (event).data.document_start.tag_directives.end = (event_tag_directives_end), \- (event).data.document_start.implicit = (event_implicit))--#define DOCUMENT_END_EVENT_INIT(event,event_implicit,start_mark,end_mark) \- (EVENT_INIT((event),YAML_DOCUMENT_END_EVENT,(start_mark),(end_mark)), \- (event).data.document_end.implicit = (event_implicit))--#define ALIAS_EVENT_INIT(event,event_anchor,start_mark,end_mark) \- (EVENT_INIT((event),YAML_ALIAS_EVENT,(start_mark),(end_mark)), \- (event).data.alias.anchor = (event_anchor))--#define SCALAR_EVENT_INIT(event,event_anchor,event_tag,event_value,event_length, \- event_plain_implicit, event_quoted_implicit,event_style,start_mark,end_mark) \- (EVENT_INIT((event),YAML_SCALAR_EVENT,(start_mark),(end_mark)), \- (event).data.scalar.anchor = (event_anchor), \- (event).data.scalar.tag = (event_tag), \- (event).data.scalar.value = (event_value), \- (event).data.scalar.length = (event_length), \- (event).data.scalar.plain_implicit = (event_plain_implicit), \- (event).data.scalar.quoted_implicit = (event_quoted_implicit), \- (event).data.scalar.style = (event_style))--#define SEQUENCE_START_EVENT_INIT(event,event_anchor,event_tag, \- event_implicit,event_style,start_mark,end_mark) \- (EVENT_INIT((event),YAML_SEQUENCE_START_EVENT,(start_mark),(end_mark)), \- (event).data.sequence_start.anchor = (event_anchor), \- (event).data.sequence_start.tag = (event_tag), \- (event).data.sequence_start.implicit = (event_implicit), \- (event).data.sequence_start.style = (event_style))--#define SEQUENCE_END_EVENT_INIT(event,start_mark,end_mark) \- (EVENT_INIT((event),YAML_SEQUENCE_END_EVENT,(start_mark),(end_mark)))--#define MAPPING_START_EVENT_INIT(event,event_anchor,event_tag, \- event_implicit,event_style,start_mark,end_mark) \- (EVENT_INIT((event),YAML_MAPPING_START_EVENT,(start_mark),(end_mark)), \- (event).data.mapping_start.anchor = (event_anchor), \- (event).data.mapping_start.tag = (event_tag), \- (event).data.mapping_start.implicit = (event_implicit), \- (event).data.mapping_start.style = (event_style))--#define MAPPING_END_EVENT_INIT(event,start_mark,end_mark) \- (EVENT_INIT((event),YAML_MAPPING_END_EVENT,(start_mark),(end_mark)))--/*- * Document initializer.- */--#define DOCUMENT_INIT(document,document_nodes_start,document_nodes_end, \- document_version_directive,document_tag_directives_start, \- document_tag_directives_end,document_start_implicit, \- document_end_implicit,document_start_mark,document_end_mark) \- (memset(&(document), 0, sizeof(yaml_document_t)), \- (document).nodes.start = (document_nodes_start), \- (document).nodes.end = (document_nodes_end), \- (document).nodes.top = (document_nodes_start), \- (document).version_directive = (document_version_directive), \- (document).tag_directives.start = (document_tag_directives_start), \- (document).tag_directives.end = (document_tag_directives_end), \- (document).start_implicit = (document_start_implicit), \- (document).end_implicit = (document_end_implicit), \- (document).start_mark = (document_start_mark), \- (document).end_mark = (document_end_mark))--/*- * Node initializers.- */--#define NODE_INIT(node,node_type,node_tag,node_start_mark,node_end_mark) \- (memset(&(node), 0, sizeof(yaml_node_t)), \- (node).type = (node_type), \- (node).tag = (node_tag), \- (node).start_mark = (node_start_mark), \- (node).end_mark = (node_end_mark))--#define SCALAR_NODE_INIT(node,node_tag,node_value,node_length, \- node_style,start_mark,end_mark) \- (NODE_INIT((node),YAML_SCALAR_NODE,(node_tag),(start_mark),(end_mark)), \- (node).data.scalar.value = (node_value), \- (node).data.scalar.length = (node_length), \- (node).data.scalar.style = (node_style))--#define SEQUENCE_NODE_INIT(node,node_tag,node_items_start,node_items_end, \- node_style,start_mark,end_mark) \- (NODE_INIT((node),YAML_SEQUENCE_NODE,(node_tag),(start_mark),(end_mark)), \- (node).data.sequence.items.start = (node_items_start), \- (node).data.sequence.items.end = (node_items_end), \- (node).data.sequence.items.top = (node_items_start), \- (node).data.sequence.style = (node_style))--#define MAPPING_NODE_INIT(node,node_tag,node_pairs_start,node_pairs_end, \- node_style,start_mark,end_mark) \- (NODE_INIT((node),YAML_MAPPING_NODE,(node_tag),(start_mark),(end_mark)), \- (node).data.mapping.pairs.start = (node_pairs_start), \- (node).data.mapping.pairs.end = (node_pairs_end), \- (node).data.mapping.pairs.top = (node_pairs_start), \- (node).data.mapping.style = (node_style))--/* Strict C compiler warning helpers */--#if defined(__clang__) || defined(__GNUC__)-# define HASATTRIBUTE_UNUSED-#endif-#ifdef HASATTRIBUTE_UNUSED-# define __attribute__unused__ __attribute__((__unused__))-#else-# define __attribute__unused__-#endif--/* Shim arguments are arguments that must be included in your function,- * but serve no purpose inside. Silence compiler warnings. */-#define SHIM(a) /*@unused@*/ a __attribute__unused__--/* UNUSED_PARAM() marks a shim argument in the body to silence compiler warnings */-#ifdef __clang__-# define UNUSED_PARAM(a) (void)(a);-#else-# define UNUSED_PARAM(a) /*@-noeffect*/if (0) (void)(a)/*@=noeffect*/;-#endif--#define YAML_MALLOC_STATIC(type) (type*)yaml_malloc(sizeof(type))-#define YAML_MALLOC(size) (yaml_char_t *)yaml_malloc(size)--/* For Haskell yaml package, since we do not use the configure script */-#define YAML_VERSION_STRING "0.2.5"-#define YAML_VERSION_MAJOR 0-#define YAML_VERSION_MINOR 2-#define YAML_VERSION_PATCH 5