happstack-yui-7371.5.0: bundle/text-wordbreak/text-wordbreak-coverage.js
/*
YUI 3.7.1 (build 5627)
Copyright 2012 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/
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However, it"," * does not cover language or context specific requirements, and it does not"," * provide meaningful results at all for languages that don't use spaces between"," * words, such as Chinese, Japanese, Thai, Lao, Khmer, and others. Server-based"," * word breaking services usually provide significantly better results with"," * better performance."," * </p>"," *"," * @class Text.WordBreak"," * @static"," */","","var Text = Y.Text,"," WBData = Text.Data.WordBreak,","","// Constants representing code point classifications.","ALETTER = 0,","MIDNUMLET = 1,","MIDLETTER = 2,","MIDNUM = 3,","NUMERIC = 4,","CR = 5,","LF = 6,","NEWLINE = 7,","EXTEND = 8,","FORMAT = 9,","KATAKANA = 10,","EXTENDNUMLET = 11,","OTHER = 12,","","// RegExp objects generated from code point data. Each regex matches a single","// character against a set of Unicode code points. 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YUI.add('text-wordbreak', function (Y, NAME) {
/**
* Provides utility methods for splitting strings on word breaks and determining
* whether a character index represents a word boundary.
*
* @module text
* @submodule text-wordbreak
*/
/**
* <p>
* Provides utility methods for splitting strings on word breaks and determining
* whether a character index represents a word boundary, using the generic word
* breaking algorithm defined in the Unicode Text Segmentation guidelines
* (<a href="http://unicode.org/reports/tr29/#Word_Boundaries">Unicode Standard
* Annex #29</a>).
* </p>
*
* <p>
* This algorithm provides a reasonable default for many languages. However, it
* does not cover language or context specific requirements, and it does not
* provide meaningful results at all for languages that don't use spaces between
* words, such as Chinese, Japanese, Thai, Lao, Khmer, and others. Server-based
* word breaking services usually provide significantly better results with
* better performance.
* </p>
*
* @class Text.WordBreak
* @static
*/
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var Text = Y.Text,
WBData = Text.Data.WordBreak,
// Constants representing code point classifications.
ALETTER = 0,
MIDNUMLET = 1,
MIDLETTER = 2,
MIDNUM = 3,
NUMERIC = 4,
CR = 5,
LF = 6,
NEWLINE = 7,
EXTEND = 8,
FORMAT = 9,
KATAKANA = 10,
EXTENDNUMLET = 11,
OTHER = 12,
// RegExp objects generated from code point data. Each regex matches a single
// character against a set of Unicode code points. The index of each item in
// this array must match its corresponding code point constant value defined
// above.
SETS = [
new RegExp(WBData.aletter),
new RegExp(WBData.midnumlet),
new RegExp(WBData.midletter),
new RegExp(WBData.midnum),
new RegExp(WBData.numeric),
new RegExp(WBData.cr),
new RegExp(WBData.lf),
new RegExp(WBData.newline),
new RegExp(WBData.extend),
new RegExp(WBData.format),
new RegExp(WBData.katakana),
new RegExp(WBData.extendnumlet)
],
EMPTY_STRING = '',
PUNCTUATION = new RegExp('^' + WBData.punctuation + '$'),
WHITESPACE = /\s/,
WordBreak = {
// -- Public Static Methods ------------------------------------------------
/**
* Splits the specified string into an array of individual words.
*
* @method getWords
* @param {String} string String to split.
* @param {Object} options (optional) Options object containing zero or more
* of the following properties:
*
* <dl>
* <dt>ignoreCase (Boolean)</dt>
* <dd>
* If <code>true</code>, the string will be converted to lowercase
* before being split. Default is <code>false</code>.
* </dd>
*
* <dt>includePunctuation (Boolean)</dt>
* <dd>
* If <code>true</code>, the returned array will include punctuation
* characters. Default is <code>false</code>.
* </dd>
*
* <dt>includeWhitespace (Boolean)</dt>
* <dd>
* If <code>true</code>, the returned array will include whitespace
* characters. Default is <code>false</code>.
* </dd>
* </dl>
* @return {Array} Array of words.
* @static
*/
getWords: function (string, options) {
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var i = 0,
map = WordBreak._classify(string),
len = map.length,
word = [],
words = [],
chr,
includePunctuation,
includeWhitespace;
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if (!options) {
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options = {};
}
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if (options.ignoreCase) {
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string = string.toLowerCase();
}
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includePunctuation = options.includePunctuation;
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includeWhitespace = options.includeWhitespace;
// Loop through each character in the classification map and determine
// whether it precedes a word boundary, building an array of distinct
// words as we go.
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for (; i < len; ++i) {
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chr = string.charAt(i);
// Append this character to the current word.
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word.push(chr);
// If there's a word boundary between the current character and the
// next character, append the current word to the words array and
// start building a new word.
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if (WordBreak._isWordBoundary(map, i)) {
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word = word.join(EMPTY_STRING);
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if (word &&
(includeWhitespace || !WHITESPACE.test(word)) &&
(includePunctuation || !PUNCTUATION.test(word))) {
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words.push(word);
}
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word = [];
}
}
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return words;
},
/**
* Returns an array containing only unique words from the specified string.
* For example, the string <code>'foo bar baz foo'</code> would result in
* the array <code>['foo', 'bar', 'baz']</code>.
*
* @method getUniqueWords
* @param {String} string String to split.
* @param {Object} options (optional) Options (see <code>getWords()</code>
* for details).
* @return {Array} Array of unique words.
* @static
*/
getUniqueWords: function (string, options) {
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return Y.Array.unique(WordBreak.getWords(string, options));
},
/**
* <p>
* Returns <code>true</code> if there is a word boundary between the
* specified character index and the next character index (or the end of the
* string).
* </p>
*
* <p>
* Note that there are always word breaks at the beginning and end of a
* string, so <code>isWordBoundary('', 0)</code> and
* <code>isWordBoundary('a', 0)</code> will both return <code>true</code>.
* </p>
*
* @method isWordBoundary
* @param {String} string String to test.
* @param {Number} index Character index to test within the string.
* @return {Boolean} <code>true</code> for a word boundary,
* <code>false</code> otherwise.
* @static
*/
isWordBoundary: function (string, index) {
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return WordBreak._isWordBoundary(WordBreak._classify(string), index);
},
// -- Protected Static Methods ---------------------------------------------
/**
* Returns a character classification map for the specified string.
*
* @method _classify
* @param {String} string String to classify.
* @return {Array} Classification map.
* @protected
* @static
*/
_classify: function (string) {
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var chr,
map = [],
i = 0,
j,
set,
stringLength = string.length,
setsLength = SETS.length,
type;
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for (; i < stringLength; ++i) {
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chr = string.charAt(i);
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type = OTHER;
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for (j = 0; j < setsLength; ++j) {
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set = SETS[j];
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if (set && set.test(chr)) {
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type = j;
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break;
}
}
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map.push(type);
}
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return map;
},
/**
* <p>
* Returns <code>true</code> if there is a word boundary between the
* specified character index and the next character index (or the end of the
* string).
* </p>
*
* <p>
* Note that there are always word breaks at the beginning and end of a
* string, so <code>_isWordBoundary('', 0)</code> and
* <code>_isWordBoundary('a', 0)</code> will both return <code>true</code>.
* </p>
*
* @method _isWordBoundary
* @param {Array} map Character classification map generated by
* <code>_classify</code>.
* @param {Number} index Character index to test.
* @return {Boolean}
* @protected
* @static
*/
_isWordBoundary: function (map, index) {
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var prevType,
type = map[index],
nextType = map[index + 1],
nextNextType;
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if (index < 0 || (index > map.length - 1 && index !== 0)) {
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return false;
}
// WB5. Don't break between most letters.
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 268);
if (type === ALETTER && nextType === ALETTER) {
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return false;
}
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nextNextType = map[index + 2];
// WB6. Don't break letters across certain punctuation.
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if (type === ALETTER &&
(nextType === MIDLETTER || nextType === MIDNUMLET) &&
nextNextType === ALETTER) {
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return false;
}
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prevType = map[index - 1];
// WB7. Don't break letters across certain punctuation.
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if ((type === MIDLETTER || type === MIDNUMLET) &&
nextType === ALETTER &&
prevType === ALETTER) {
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return false;
}
// WB8/WB9/WB10. Don't break inside sequences of digits or digits
// adjacent to letters.
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if ((type === NUMERIC || type === ALETTER) &&
(nextType === NUMERIC || nextType === ALETTER)) {
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return false;
}
// WB11. Don't break inside numeric sequences like "3.2" or
// "3,456.789".
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 299);
if ((type === MIDNUM || type === MIDNUMLET) &&
nextType === NUMERIC &&
prevType === NUMERIC) {
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return false;
}
// WB12. Don't break inside numeric sequences like "3.2" or
// "3,456.789".
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if (type === NUMERIC &&
(nextType === MIDNUM || nextType === MIDNUMLET) &&
nextNextType === NUMERIC) {
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return false;
}
// WB4. Ignore format and extend characters.
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if (type === EXTEND || type === FORMAT ||
prevType === EXTEND || prevType === FORMAT ||
nextType === EXTEND || nextType === FORMAT) {
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return false;
}
// WB3. Don't break inside CRLF.
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 321);
if (type === CR && nextType === LF) {
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return false;
}
// WB3a. Break before newlines (including CR and LF).
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 326);
if (type === NEWLINE || type === CR || type === LF) {
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return true;
}
// WB3b. Break after newlines (including CR and LF).
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if (nextType === NEWLINE || nextType === CR || nextType === LF) {
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return true;
}
// WB13. Don't break between Katakana characters.
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 336);
if (type === KATAKANA && nextType === KATAKANA) {
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 337);
return false;
}
// WB13a. Don't break from extenders.
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 341);
if (nextType === EXTENDNUMLET &&
(type === ALETTER || type === NUMERIC || type === KATAKANA ||
type === EXTENDNUMLET)) {
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 344);
return false;
}
// WB13b. Don't break from extenders.
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 348);
if (type === EXTENDNUMLET &&
(nextType === ALETTER || nextType === NUMERIC ||
nextType === KATAKANA)) {
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 351);
return false;
}
// Break after any character not covered by the rules above.
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 355);
return true;
}
};
_yuitest_coverline("build/text-wordbreak/text-wordbreak.js", 359);
Text.WordBreak = WordBreak;
}, '3.7.1', {"requires": ["array-extras", "text-data-wordbreak"]});