| 1 | /** Used to compose unicode character classes. */
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| 2 | var rsAstralRange = '\\ud800-\\udfff',
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| 3 | rsComboMarksRange = '\\u0300-\\u036f',
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| 4 | reComboHalfMarksRange = '\\ufe20-\\ufe2f',
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| 5 | rsComboSymbolsRange = '\\u20d0-\\u20ff',
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| 6 | rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
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| 7 | rsDingbatRange = '\\u2700-\\u27bf',
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| 8 | rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
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| 9 | rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
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| 10 | rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
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| 11 | rsPunctuationRange = '\\u2000-\\u206f',
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| 12 | rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
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| 13 | rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
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| 14 | rsVarRange = '\\ufe0e\\ufe0f',
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| 15 | rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;
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| 16 |
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| 17 | /** Used to compose unicode capture groups. */
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| 18 | var rsApos = "['\u2019]",
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| 19 | rsBreak = '[' + rsBreakRange + ']',
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| 20 | rsCombo = '[' + rsComboRange + ']',
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| 21 | rsDigits = '\\d+',
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| 22 | rsDingbat = '[' + rsDingbatRange + ']',
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| 23 | rsLower = '[' + rsLowerRange + ']',
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| 24 | rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
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| 25 | rsFitz = '\\ud83c[\\udffb-\\udfff]',
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| 26 | rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
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| 27 | rsNonAstral = '[^' + rsAstralRange + ']',
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| 28 | rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
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| 29 | rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
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| 30 | rsUpper = '[' + rsUpperRange + ']',
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| 31 | rsZWJ = '\\u200d';
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| 32 |
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| 33 | /** Used to compose unicode regexes. */
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| 34 | var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
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| 35 | rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
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| 36 | rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
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| 37 | rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
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| 38 | reOptMod = rsModifier + '?',
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| 39 | rsOptVar = '[' + rsVarRange + ']?',
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| 40 | rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
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| 41 | rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
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| 42 | rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
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| 43 | rsSeq = rsOptVar + reOptMod + rsOptJoin,
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| 44 | rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq;
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| 45 |
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| 46 | /** Used to match complex or compound words. */
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| 47 | var reUnicodeWord = RegExp([
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| 48 | rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
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| 49 | rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
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| 50 | rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
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| 51 | rsUpper + '+' + rsOptContrUpper,
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| 52 | rsOrdUpper,
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| 53 | rsOrdLower,
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| 54 | rsDigits,
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| 55 | rsEmoji
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| 56 | ].join('|'), 'g');
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| 57 |
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| 58 | /**
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| 59 | * Splits a Unicode `string` into an array of its words.
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| 60 | *
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| 61 | * @private
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| 62 | * @param {string} The string to inspect.
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| 63 | * @returns {Array} Returns the words of `string`.
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| 64 | */
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| 65 | function unicodeWords(string) {
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| 66 | return string.match(reUnicodeWord) || [];
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| 67 | }
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| 68 |
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| 69 | module.exports = unicodeWords;
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