diff --git a/COPYING.md b/COPYING.md new file mode 100644 --- /dev/null +++ b/COPYING.md @@ -0,0 +1,361 @@ +### GNU GENERAL PUBLIC LICENSE + +Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +### Preamble + +The licenses for most software are designed to take away your freedom +to share and change it. By contrast, the GNU General Public License is +intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Lesser General Public License instead.) You can apply it to +your programs, too. + +When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + +To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if +you distribute copies of the software, or if you modify it. + +For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. 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Whether that +is true depends on what the Program does. + +**1.** You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a +fee. + +**2.** You may modify your copy or copies of the Program or any +portion of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + +**a)** You must cause the modified files to carry prominent notices +stating that you changed the files and the date of any change. + + +**b)** You must cause any work that you distribute or publish, that in +whole or in part contains or is derived from the Program or any part +thereof, to be licensed as a whole at no charge to all third parties +under the terms of this License. + + +**c)** If the modified program normally reads commands interactively +when run, you must cause it, when started running for such interactive +use in the most ordinary way, to print or display an announcement +including an appropriate copyright notice and a notice that there is +no warranty (or else, saying that you provide a warranty) and that +users may redistribute the program under these conditions, and telling +the user how to view a copy of this License. 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Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + +**8.** If the distribution and/or use of the Program is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Program under this License +may add an explicit geographical distribution limitation excluding +those countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + +**9.** The Free Software Foundation may publish revised and/or new +versions of the General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and +"any later version", you have the option of following the terms and +conditions either of that version or of any later version published by +the Free Software Foundation. If the Program does not specify a +version number of this License, you may choose any version ever +published by the Free Software Foundation. + +**10.** If you wish to incorporate parts of the Program into other +free programs whose distribution conditions are different, write to +the author to ask for permission. For software which is copyrighted by +the Free Software Foundation, write to the Free Software Foundation; +we sometimes make exceptions for this. Our decision will be guided by +the two goals of preserving the free status of all derivatives of our +free software and of promoting the sharing and reuse of software +generally. + +**NO WARRANTY** + +**11.** BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO +WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. +EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR +OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY +KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE +PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME +THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + +**12.** IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + +### END OF TERMS AND CONDITIONS + +### How to Apply These Terms to Your New Programs + +If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these +terms. + +To do so, attach the following notices to the program. It is safest to +attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + one line to give the program's name and an idea of what it does. + Copyright (C) yyyy name of author + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + +Also add information on how to contact you by electronic and paper +mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details + type `show w'. This is free software, and you are welcome + to redistribute it under certain conditions; type `show c' + for details. + +The hypothetical commands \`show w' and \`show c' should show the +appropriate parts of the General Public License. Of course, the +commands you use may be called something other than \`show w' and +\`show c'; they could even be mouse-clicks or menu items--whatever +suits your program. + +You should also get your employer (if you work as a programmer) or +your school, if any, to sign a "copyright disclaimer" for the program, +if necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright + interest in the program `Gnomovision' + (which makes passes at compilers) written + by James Hacker. + + signature of Ty Coon, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, +you may consider it more useful to permit linking proprietary +applications with the library. If this is what you want to do, use the +[GNU Lesser General Public +License](https://www.gnu.org/licenses/lgpl.html) instead of this +License. diff --git a/lua/PandocCLI/Lua.hs b/lua/PandocCLI/Lua.hs new file mode 100644 --- /dev/null +++ b/lua/PandocCLI/Lua.hs @@ -0,0 +1,35 @@ +{-# LANGUAGE OverloadedStrings #-} +{- | + Module : PandocCLI.Lua + Copyright : © 2022-2023 Albert Krewinkel + License : GPL-2.0-or-later + Maintainer : Albert Krewinkel + +Functions to run the pandoc Lua scripting engine. +-} +module PandocCLI.Lua (runLuaInterpreter, getEngine) where + +import Control.Monad ((<=<)) +import HsLua.CLI (EnvBehavior (..), Settings (..), runStandalone) +import Text.Pandoc.Class (runIOorExplode) +import Text.Pandoc.Error (handleError) +import Text.Pandoc.Lua (runLua, runLuaNoEnv, getEngine) +import Text.Pandoc.Version (pandocVersionText) + +-- | Runs pandoc as a Lua interpreter that is (mostly) compatible with +-- the default @lua@ program shipping with Lua. +runLuaInterpreter :: String -- ^ Program name + -> [String] -- ^ Command line arguments + -> IO () +runLuaInterpreter progName args = do + let settings = Settings + { settingsVersionInfo = "\nEmbedded in pandoc " <> pandocVersionText + , settingsRunner = runner + } + runStandalone settings progName args + where + runner envBehavior = + let runLua' = case envBehavior of + IgnoreEnvVars -> runLuaNoEnv + ConsultEnvVars -> runLua + in handleError <=< runIOorExplode . runLua' diff --git a/no-lua/PandocCLI/Lua.hs b/no-lua/PandocCLI/Lua.hs new file mode 100644 --- /dev/null +++ b/no-lua/PandocCLI/Lua.hs @@ -0,0 +1,25 @@ +{- | + Module : PandocCLI.Lua + Copyright : © 2022-2023 Albert Krewinkel + License : GPL-2.0-or-later + Maintainer : Albert Krewinkel + +Placeholder values to be used when pandoc is compiled without support +for the Lua scripting engine. +-} +module PandocCLI.Lua (runLuaInterpreter, getEngine) where + +import Control.Monad.IO.Class (MonadIO) +import Text.Pandoc.Error (PandocError (PandocNoScriptingEngine), handleError) +import Text.Pandoc.Scripting (ScriptingEngine, noEngine) + +-- | Raises an error, reporting that the scripting engine is unavailable. +runLuaInterpreter :: String -- ^ Program name + -> [String] -- ^ Command line arguments + -> IO () +runLuaInterpreter _progName _args = do + handleError (Left PandocNoScriptingEngine) + +-- | Placeholder scripting engine. +getEngine :: MonadIO m => m ScriptingEngine +getEngine = pure noEngine diff --git a/no-server/PandocCLI/Server.hs b/no-server/PandocCLI/Server.hs new file mode 100644 --- /dev/null +++ b/no-server/PandocCLI/Server.hs @@ -0,0 +1,33 @@ +{- | + Module : PandocCLI.Server + Copyright : © 2006-2023 John MacFarlane + License : GPL-2.0-or-later + Maintainer : John MacFarlane + +Placeholder module to be used when pandoc is compiled without server +support. +-} +module PandocCLI.Server + ( runCGI + , runServer + ) +where + +import System.IO (hPutStrLn, stderr) +import System.Exit (exitWith, ExitCode(ExitFailure)) + +-- | Placeholder function for the CGI server; prints an error message +-- and exists with error code. +runCGI :: IO () +runCGI = serverUnsupported + +-- | Placeholder function for the HTTP server; prints an error message +-- and exists with error code. +runServer :: [String] -> IO () +runServer _args = serverUnsupported + +serverUnsupported :: IO () +serverUnsupported = do + hPutStrLn stderr $ "Server mode unsupported.\n" <> + "Pandoc was not compiled with the 'server' flag." + exitWith $ ExitFailure 4 diff --git a/pandoc-cli.cabal b/pandoc-cli.cabal new file mode 100644 --- /dev/null +++ b/pandoc-cli.cabal @@ -0,0 +1,92 @@ +cabal-version: 2.4 +name: pandoc-cli +version: 0.1 +build-type: Simple +license: GPL-2.0-or-later +license-file: COPYING.md +copyright: (c) 2006-2022 John MacFarlane +author: John MacFarlane +maintainer: John MacFarlane +bug-reports: https://github.com/jgm/pandoc/issues +stability: alpha +homepage: https://pandoc.org +category: Text +tested-with: GHC == 8.6.5, GHC == 8.8.4, GHC == 8.10.7, GHC == 9.0.2, + GHC == 9.2.5, GHC == 9.4.4 +synopsis: Conversion between documentation formats +description: Pandoc-cli provides a command-line executable that uses the + pandoc library to convert between markup formats. +-- data-files: +-- extra-source-files: +source-repository head + type: git + location: git://github.com/jgm/pandoc.git + +flag lua + description: Support custom modifications and conversions with the + pandoc Lua scripting engine. + default: True + +flag server + Description: Include support for running pandoc as an HTTP server. + Default: True + +flag nightly + Description: Add '-nightly-COMPILEDATE' to the output of '--version'. + Default: False + +common common-options + default-language: Haskell2010 + other-extensions: OverloadedStrings + build-depends: base >= 4.12 && < 5 + ghc-options: -Wall -fno-warn-unused-do-bind + -Wincomplete-record-updates + -Wnoncanonical-monad-instances + -Wcpp-undef + -Wincomplete-uni-patterns + -Widentities + -Wpartial-fields + -Wmissing-signatures + -fhide-source-paths + + if impl(ghc >= 8.10) + ghc-options: -Wunused-packages + + if impl(ghc >= 9.0) + ghc-options: -Winvalid-haddock + + if os(windows) + cpp-options: -D_WINDOWS + +common common-executable + import: common-options + ghc-options: -rtsopts -with-rtsopts=-A8m -threaded + +executable pandoc + import: common-executable + hs-source-dirs: src + main-is: pandoc.hs + buildable: True + build-depends: pandoc >= 3.0, + text + other-modules: PandocCLI.Lua + , PandocCLI.Server + if flag(nightly) + cpp-options: -DNIGHTLY + build-depends: template-haskell, + time + if flag(server) + build-depends: pandoc-server >= 0.1 && < 0.2, + wai-extra >= 3.0.24, + warp, + safe + hs-source-dirs: server + else + hs-source-dirs: no-server + + if flag(lua) + build-depends: hslua-cli >= 1.2 && < 1.3, + pandoc-lua-engine >= 0.1 && < 0.2 + hs-source-dirs: lua + else + hs-source-dirs: no-lua diff --git a/server/PandocCLI/Server.hs b/server/PandocCLI/Server.hs new file mode 100644 --- /dev/null +++ b/server/PandocCLI/Server.hs @@ -0,0 +1,35 @@ +{-# LANGUAGE OverloadedStrings #-} +{- | + Module : Main + Copyright : © 2006-2023 John MacFarlane + License : GPL-2.0-or-later + Maintainer : John MacFarlane + +Functions for the pandoc server CLI. +-} +module PandocCLI.Server + ( runCGI + , runServer + ) +where +import qualified Network.Wai.Handler.CGI as CGI +import qualified Network.Wai.Handler.Warp as Warp +import Network.Wai.Middleware.Timeout (timeout) +import Safe (readDef) +import System.Environment (lookupEnv) +import Text.Pandoc.Server (ServerOpts(..), parseServerOptsFromArgs, app) +import System.IO (stderr, hPutStrLn) + +-- | Runs the CGI server. +runCGI :: IO () +runCGI = do + cgiTimeout <- maybe 2 (readDef 2) <$> lookupEnv "PANDOC_SERVER_TIMEOUT" + CGI.run (timeout cgiTimeout app) + +-- | Runs the HTTP server. +runServer :: [String] -> IO () +runServer args = do + sopts <- parseServerOptsFromArgs args + hPutStrLn stderr $ + "Starting server on port " <> show (serverPort sopts) <> "..." + Warp.run (serverPort sopts) (timeout (serverTimeout sopts) app) diff --git a/src/pandoc.hs b/src/pandoc.hs new file mode 100644 --- /dev/null +++ b/src/pandoc.hs @@ -0,0 +1,105 @@ +{-# LANGUAGE CPP #-} +{-# LANGUAGE TemplateHaskell #-} +{- | + Module : Main + Copyright : Copyright (C) 2006-2023 John MacFarlane + License : GNU GPL, version 2 or above + + Maintainer : John MacFarlane + Stability : alpha + Portability : portable + +Parses command-line options and calls the appropriate readers and +writers. +-} +module Main where +import qualified Control.Exception as E +import System.Environment (getArgs, getProgName) +import Text.Pandoc.App ( convertWithOpts, defaultOpts, options + , parseOptionsFromArgs, handleOptInfo ) +import Text.Pandoc.Error (handleError) +import qualified Text.Pandoc.UTF8 as UTF8 +import System.Exit (exitSuccess) +import Data.Monoid (Any(..)) +import Control.Monad (when) +import PandocCLI.Lua +import PandocCLI.Server +import Text.Pandoc.Version (pandocVersion) +import Text.Pandoc.Data (defaultUserDataDir) +import Text.Pandoc.Scripting (ScriptingEngine(..)) +import Data.Version (showVersion) +import qualified Data.Text as T + +#ifdef NIGHTLY +import qualified Language.Haskell.TH as TH +import Data.Time +#endif + +#ifdef NIGHTLY +versionSuffix :: String +versionSuffix = "-nightly-" ++ + $(TH.stringE =<< + TH.runIO (formatTime defaultTimeLocale "%F" <$> Data.Time.getCurrentTime)) +#else +versionSuffix :: String +versionSuffix = "" +#endif + +main :: IO () +main = E.handle (handleError . Left) $ do + prg <- getProgName + rawArgs <- map UTF8.decodeArg <$> getArgs + let hasVersion = getAny $ foldMap + (\s -> Any (s == "-v" || s == "--version")) + (takeWhile (/= "--") rawArgs) + when hasVersion versionInfo + case prg of + "pandoc-server.cgi" -> runCGI + "pandoc-server" -> runServer rawArgs + "pandoc-lua" -> runLuaInterpreter prg rawArgs + _ -> + case rawArgs of + "lua" : args -> runLuaInterpreter "pandoc lua" args + "server": args -> runServer args + args -> do + engine <- getEngine + res <- parseOptionsFromArgs options defaultOpts prg args + case res of + Left e -> handleOptInfo engine e + Right opts -> convertWithOpts engine opts + +copyrightMessage :: String +copyrightMessage = + "Copyright (C) 2006-2023 John MacFarlane. Web: https://pandoc.org\n" + ++ + "This is free software; see the source for copying conditions. There is no\n" + ++ + "warranty, not even for merchantability or fitness for a particular purpose." + +flagSettings :: String +flagSettings = "Features: " ++ +#ifdef VERSION_pandoc_server + "+server" +#else + "-server" +#endif + ++ " " ++ +#ifdef VERSION_hslua_cli + "+lua" +#else + "-lua" +#endif + +versionInfo :: IO () +versionInfo = do + progname <- getProgName + defaultDatadir <- defaultUserDataDir + scriptingEngine <- getEngine + putStr $ unlines + [ progname ++ " " ++ showVersion pandocVersion ++ versionSuffix + , flagSettings + , "Scripting engine: " ++ T.unpack (engineName scriptingEngine) + , "User data directory: " ++ defaultDatadir + , copyrightMessage + ] + exitSuccess