jquery.i18n.emitter.bidi.js
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jquery.i18n.emitter.bidi.js
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	/*!
	* BIDI embedding support for jQuery.i18n
	*
	* Copyright (C) 2015, David Chan
	*
	* This code is dual licensed GPLv2 or later and MIT. You don't have to do
	* anything special to choose one license or the other and you don't have to
	* notify anyone which license you are using. You are free to use this code
	* in commercial projects as long as the copyright header is left intact.
	* See files GPL-LICENSE and MIT-LICENSE for details.
	*
	* @licence GNU General Public Licence 2.0 or later
	* @licence MIT License
	*/

	( function ( $ ) {
	'use strict';
	var strongDirRegExp;

	/**
	* Matches the first strong directionality codepoint:
	* - in group 1 if it is LTR
	* - in group 2 if it is RTL
	* Does not match if there is no strong directionality codepoint.
	*
	* Generated by UnicodeJS (see tools/strongDir) from the UCD; see
	* https://gerrit.wikimedia.org/g/unicodejs .
	*/
	// eslint-disable-next-line no-misleading-character-class
	strongDirRegExp = new RegExp(
	'(?:' +
	'(' +
	'[\u0041-\u005a\u0061-\u007a\u00aa\u00b5\u00ba\u00c0-\u00d6\u00d8-\u00f6\u00f8-\u02b8\u02bb-\u02c1\u02d0\u02d1\u02e0-\u02e4\u02ee\u0370-\u0373\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0482\u048a-\u052f\u0531-\u0556\u0559-\u055f\u0561-\u0587\u0589\u0903-\u0939\u093b\u093d-\u0940\u0949-\u094c\u094e-\u0950\u0958-\u0961\u0964-\u0980\u0982\u0983\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd-\u09c0\u09c7\u09c8\u09cb\u09cc\u09ce\u09d7\u09dc\u09dd\u09df-\u09e1\u09e6-\u09f1\u09f4-\u09fa\u0a03\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a3e-\u0a40\u0a59-\u0a5c\u0a5e\u0a66-\u0a6f\u0a72-\u0a74\u0a83\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd-\u0ac0\u0ac9\u0acb\u0acc\u0ad0\u0ae0\u0ae1\u0ae6-\u0af0\u0af9\u0b02\u0b03\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b3e\u0b40\u0b47\u0b48\u0b4b\u0b4c\u0b57\u0b5c\u0b5d\u0b5f-\u0b61\u0b66-\u0b77\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bbe\u0bbf\u0bc1\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcc\u0bd0\u0bd7\u0be6-\u0bf2\u0c01-\u0c03\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c41-\u0c44\u0c58-\u0c5a\u0c60\u0c61\u0c66-\u0c6f\u0c7f\u0c82\u0c83\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd-\u0cc4\u0cc6-\u0cc8\u0cca\u0ccb\u0cd5\u0cd6\u0cde\u0ce0\u0ce1\u0ce6-\u0cef\u0cf1\u0cf2\u0d02\u0d03\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d-\u0d40\u0d46-\u0d48\u0d4a-\u0d4c\u0d4e\u0d57\u0d5f-\u0d61\u0d66-\u0d75\u0d79-\u0d7f\u0d82\u0d83\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0dcf-\u0dd1\u0dd8-\u0ddf\u0de6-\u0def\u0df2-\u0df4\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e4f-\u0e5b\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0ed0-\u0ed9\u0edc-\u0edf\u0f00-\u0f17\u0f1a-\u0f34\u0f36\u0f38\u0f3e-\u0f47\u0f49-\u0f6c\u0f7f\u0f85\u0f88-\u0f8c\u0fbe-\u0fc5\u0fc7-\u0fcc\u0fce-\u0fda\u1000-\u102c\u1031\u1038\u103b\u103c\u103f-\u1057\u105a-\u105d\u1061-\u1070\u1075-\u1081\u1083\u1084\u1087-\u108c\u108e-\u109c\u109e-\u10c5\u10c7\u10cd\u10d0-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1360-\u137c\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u167f\u1681-\u169a\u16a0-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1735\u1736\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17b6\u17be-\u17c5\u17c7\u17c8\u17d4-\u17da\u17dc\u17e0-\u17e9\u1810-\u1819\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1923-\u1926\u1929-\u192b\u1930\u1931\u1933-\u1938\u1946-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u19d0-\u19da\u1a00-\u1a16\u1a19\u1a1a\u1a1e-\u1a55\u1a57\u1a61\u1a63\u1a64\u1a6d-\u1a72\u1a80-\u1a89\u1a90-\u1a99\u1aa0-\u1aad\u1b04-\u1b33\u1b35\u1b3b\u1b3d-\u1b41\u1b43-\u1b4b\u1b50-\u1b6a\u1b74-\u1b7c\u1b82-\u1ba1\u1ba6\u1ba7\u1baa\u1bae-\u1be5\u1be7\u1bea-\u1bec\u1bee\u1bf2\u1bf3\u1bfc-\u1c2b\u1c34\u1c35\u1c3b-\u1c49\u1c4d-\u1c7f\u1cc0-\u1cc7\u1cd3\u1ce1\u1ce9-\u1cec\u1cee-\u1cf3\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u200e\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u214f\u2160-\u2188\u2336-\u237a\u2395\u249c-\u24e9\u26ac\u2800-\u28ff\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d70\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u302e\u302f\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u3190-\u31ba\u31f0-\u321c\u3220-\u324f\u3260-\u327b\u327f-\u32b0\u32c0-\u32cb\u32d0-\u32fe\u3300-\u3376\u337b-\u33dd\u33e0-\u33fe\u3400-\u4db5\u4e00-\u9fd5\ua000-\ua48c\ua4d0-\ua60c\ua610-\ua62b\ua640-\ua66e\ua680-\ua69d\ua6a0-\ua6ef\ua6f2-\ua6f7\ua722-\ua787\ua789-\ua7ad\ua7b0-\ua7b7\ua7f7-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua824\ua827\ua830-\ua837\ua840-\ua873\ua880-\ua8c3\ua8ce-\ua8d9\ua8f2-\ua8fd\ua900-\ua925\ua92e-\ua946\ua952\ua953\ua95f-\ua97c\ua983-\ua9b2\ua9b4\ua9b5\ua9ba\ua9bb\ua9bd-\ua9cd\ua9cf-\ua9d9\ua9de-\ua9e4\ua9e6-\ua9fe\uaa00-\uaa28\uaa2f\uaa30\uaa33\uaa34\uaa40-\uaa42\uaa44-\uaa4b\uaa4d\uaa50-\uaa59\uaa5c-\uaa7b\uaa7d-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaaeb\uaaee-\uaaf5\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab65\uab70-\uabe4\uabe6\uabe7\uabe9-\uabec\uabf0-\uabf9\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\ue000-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]\|\ud800[\udc00-\udc0b]\|\ud800[\udc0d-\udc26]\|\ud800[\udc28-\udc3a]\|\ud800\udc3c\|\ud800\udc3d\|\ud800[\udc3f-\udc4d]\|\ud800[\udc50-\udc5d]\|\ud800[\udc80-\udcfa]\|\ud800\udd00\|\ud800\udd02\|\ud800[\udd07-\udd33]\|\ud800[\udd37-\udd3f]\|\ud800[\uddd0-\uddfc]\|\ud800[\ude80-\ude9c]\|\ud800[\udea0-\uded0]\|\ud800[\udf00-\udf23]\|\ud800[\udf30-\udf4a]\|\ud800[\udf50-\udf75]\|\ud800[\udf80-\udf9d]\|\ud800[\udf9f-\udfc3]\|\ud800[\udfc8-\udfd5]\|\ud801[\udc00-\udc9d]\|\ud801[\udca0-\udca9]\|\ud801[\udd00-\udd27]\|\ud801[\udd30-\udd63]\|\ud801\udd6f\|\ud801[\ude00-\udf36]\|\ud801[\udf40-\udf55]\|\ud801[\udf60-\udf67]\|\ud804\udc00\|\ud804[\udc02-\udc37]\|\ud804[\udc47-\udc4d]\|\ud804[\udc66-\udc6f]\|\ud804[\udc82-\udcb2]\|\ud804\udcb7\|\ud804\udcb8\|\ud804[\udcbb-\udcc1]\|\ud804[\udcd0-\udce8]\|\ud804[\udcf0-\udcf9]\|\ud804[\udd03-\udd26]\|\ud804\udd2c\|\ud804[\udd36-\udd43]\|\ud804[\udd50-\udd72]\|\ud804[\udd74-\udd76]\|\ud804[\udd82-\uddb5]\|\ud804[\uddbf-\uddc9]\|\ud804\uddcd\|\ud804[\uddd0-\udddf]\|\ud804[\udde1-\uddf4]\|\ud804[\ude00-\ude11]\|\ud804[\ude13-\ude2e]\|\ud804\ude32\|\ud804\ude33\|\ud804\ude35\|\ud804[\ude38-\ude3d]\|\ud804[\ude80-\ude86]\|\ud804\ude88\|\ud804[\ude8a-\ude8d]\|\ud804[\ude8f-\ude9d]\|\ud804[\ude9f-\udea9]\|\ud804[\udeb0-\udede]\|\ud804[\udee0-\udee2]\|\ud804[\udef0-\udef9]\|\ud804\udf02\|\ud804\udf03\|\ud804[\udf05-\udf0c]\|\ud804\udf0f\|\ud804\udf10\|\ud804[\udf13-\udf28]\|\ud804[\udf2a-\udf30]\|\ud804\udf32\|\ud804\udf33\|\ud804[\udf35-\udf39]\|\ud804[\udf3d-\udf3f]\|\ud804[\udf41-\udf44]\|\ud804\udf47\|\ud804\udf48\|\ud804[\udf4b-\udf4d]\|\ud804\udf50\|\ud804\udf57\|\ud804[\udf5d-\udf63]\|\ud805[\udc80-\udcb2]\|\ud805\udcb9\|\ud805[\udcbb-\udcbe]\|\ud805\udcc1\|\ud805[\udcc4-\udcc7]\|\ud805[\udcd0-\udcd9]\|\ud805[\udd80-\uddb1]\|\ud805[\uddb8-\uddbb]\|\ud805\uddbe\|\ud805[\uddc1-\udddb]\|\ud805[\ude00-\ude32]\|\ud805\ude3b\|\ud805\ude3c\|\ud805\ude3e\|\ud805[\ude41-\ude44]\|\ud805[\ude50-\ude59]\|\ud805[\ude80-\udeaa]\|\ud805\udeac\|\ud805\udeae\|\ud805\udeaf\|\ud805\udeb6\|\ud805[\udec0-\udec9]\|\ud805[\udf00-\udf19]\|\ud805\udf20\|\ud805\udf21\|\ud805\udf26\|\ud805[\udf30-\udf3f]\|\ud806[\udca0-\udcf2]\|\ud806\udcff\|\ud806[\udec0-\udef8]\|\ud808[\udc00-\udf99]\|\ud809[\udc00-\udc6e]\|\ud809[\udc70-\udc74]\|\ud809[\udc80-\udd43]\|\ud80c[\udc00-\udfff]\|\ud80d[\udc00-\udc2e]\|\ud811[\udc00-\ude46]\|\ud81a[\udc00-\ude38]\|\ud81a[\ude40-\ude5e]\|\ud81a[\ude60-\ude69]\|\ud81a\ude6e\|\ud81a\ude6f\|\ud81a[\uded0-\udeed]\|\ud81a\udef5\|\ud81a[\udf00-\udf2f]\|\ud81a[\udf37-\udf45]\|\ud81a[\udf50-\udf59]\|\ud81a[\udf5b-\udf61]\|\ud81a[\udf63-\udf77]\|\ud81a[\udf7d-\udf8f]\|\ud81b[\udf00-\udf44]\|\ud81b[\udf50-\udf7e]\|\ud81b[\udf93-\udf9f]\|\ud82c\udc00\|\ud82c\udc01\|\ud82f[\udc00-\udc6a]\|\ud82f[\udc70-\udc7c]\|\ud82f[\udc80-\udc88]\|\ud82f[\udc90-\udc99]\|\ud82f\udc9c\|\ud82f\udc9f\|\ud834[\udc00-\udcf5]\|\ud834[\udd00-\udd26]\|\ud834[\udd29-\udd66]\|\ud834[\udd6a-\udd72]\|\ud834\udd83\|\ud834\udd84\|\ud834[\udd8c-\udda9]\|\ud834[\uddae-\udde8]\|\ud834[\udf60-\udf71]\|\ud835[\udc00-\udc54]\|\ud835[\udc56-\udc9c]\|\ud835\udc9e\|\ud835\udc9f\|\ud835\udca2\|\ud835\udca5\|\ud835\udca6\|\ud835[\udca9-\udcac]\|\ud835[\udcae-\udcb9]\|\ud835\udcbb\|\ud835[\udcbd-\udcc3]\|\ud835[\udcc5-\udd05]\|\ud835[\udd07-\udd0a]\|\ud835[\udd0d-\udd14]\|\ud835[\udd16-\udd1c]\|\ud835[\udd1e-\udd39]\|\ud835[\udd3b-\udd3e]\|\ud835[\udd40-\udd44]\|\ud835\udd46\|\ud835[\udd4a-\udd50]\|\ud835[\udd52-\udea5]\|\ud835[\udea8-\udeda]\|\ud835[\udedc-\udf14]\|\ud835[\udf16-\udf4e]\|\ud835[\udf50-\udf88]\|\ud835[\udf8a-\udfc2]\|\ud835[\udfc4-\udfcb]\|\ud836[\udc00-\uddff]\|\ud836[\ude37-\ude3a]\|\ud836[\ude6d-\ude74]\|\ud836[\ude76-\ude83]\|\ud836[\ude85-\ude8b]\|\ud83c[\udd10-\udd2e]\|\ud83c[\udd30-\udd69]\|\ud83c[\udd70-\udd9a]\|\ud83c[\udde6-\ude02]\|\ud83c[\ude10-\ude3a]\|\ud83c[\ude40-\ude48]\|\ud83c\ude50\|\ud83c\ude51\|[\ud840-\ud868][\udc00-\udfff]\|\ud869[\udc00-\uded6]\|\ud869[\udf00-\udfff]\|[\ud86a-\ud86c][\udc00-\udfff]\|\ud86d[\udc00-\udf34]\|\ud86d[\udf40-\udfff]\|\ud86e[\udc00-\udc1d]\|\ud86e[\udc20-\udfff]\|[\ud86f-\ud872][\udc00-\udfff]\|\ud873[\udc00-\udea1]\|\ud87e[\udc00-\ude1d]\|[\udb80-\udbbe][\udc00-\udfff]\|\udbbf[\udc00-\udffd]\|[\udbc0-\udbfe][\udc00-\udfff]\|\udbff[\udc00-\udffd]' +
	')\|(' +
	'[\u0590\u05be\u05c0\u05c3\u05c6\u05c8-\u05ff\u07c0-\u07ea\u07f4\u07f5\u07fa-\u0815\u081a\u0824\u0828\u082e-\u0858\u085c-\u089f\u200f\ufb1d\ufb1f-\ufb28\ufb2a-\ufb4f\u0608\u060b\u060d\u061b-\u064a\u066d-\u066f\u0671-\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u0710\u0712-\u072f\u074b-\u07a5\u07b1-\u07bf\u08a0-\u08e2\ufb50-\ufd3d\ufd40-\ufdcf\ufdf0-\ufdfc\ufdfe\ufdff\ufe70-\ufefe]\|\ud802[\udc00-\udd1e]\|\ud802[\udd20-\ude00]\|\ud802\ude04\|\ud802[\ude07-\ude0b]\|\ud802[\ude10-\ude37]\|\ud802[\ude3b-\ude3e]\|\ud802[\ude40-\udee4]\|\ud802[\udee7-\udf38]\|\ud802[\udf40-\udfff]\|\ud803[\udc00-\ude5f]\|\ud803[\ude7f-\udfff]\|\ud83a[\udc00-\udccf]\|\ud83a[\udcd7-\udfff]\|\ud83b[\udc00-\uddff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\udf00-\udfff]\|\ud83b[\ude00-\udeef]\|\ud83b[\udef2-\udeff]' +
	')' +
	')'
	);

	/**
	* Gets directionality of the first strongly directional codepoint
	*
	* This is the rule the BIDI algorithm uses to determine the directionality of
	* paragraphs ( http://unicode.org/reports/tr9/#The_Paragraph_Level ) and
	* FSI isolates ( http://unicode.org/reports/tr9/#Explicit_Directional_Isolates ).
	*
	* TODO: Does not handle BIDI control characters inside the text.
	* TODO: Does not handle unallocated characters.
	*
	* @param {string} text The text from which to extract initial directionality.
	* @return {string} Directionality (either 'ltr' or 'rtl')
	*/
	function strongDirFromContent( text ) {
	var m = text.match( strongDirRegExp );
	if ( !m ) {
	return null;
	}
	if ( m[ 2 ] === undefined ) {
	return 'ltr';
	}
	return 'rtl';
	}

	$.extend( $.i18n.parser.emitter, {
	/**
	* Wraps argument with unicode control characters for directionality safety
	*
	* This solves the problem where directionality-neutral characters at the edge of
	* the argument string get interpreted with the wrong directionality from the
	* enclosing context, giving renderings that look corrupted like "(Ben_(WMF".
	*
	* The wrapping is LRE...PDF or RLE...PDF, depending on the detected
	* directionality of the argument string, using the BIDI algorithm's own "First
	* strong directional codepoint" rule. Essentially, this works round the fact that
	* there is no embedding equivalent of U+2068 FSI (isolation with heuristic
	* direction inference). The latter is cleaner but still not widely supported.
	*
	* @param {string[]} nodes The text nodes from which to take the first item.
	* @return {string} Wrapped String of content as needed.
	*/
	bidi: function ( nodes ) {
	var dir = strongDirFromContent( nodes[ 0 ] );
	if ( dir === 'ltr' ) {
	// Wrap in LEFT-TO-RIGHT EMBEDDING ... POP DIRECTIONAL FORMATTING
	return '\u202A' + nodes[ 0 ] + '\u202C';
	}
	if ( dir === 'rtl' ) {
	// Wrap in RIGHT-TO-LEFT EMBEDDING ... POP DIRECTIONAL FORMATTING
	return '\u202B' + nodes[ 0 ] + '\u202C';
	}
	// No strong directionality: do not wrap
	return nodes[ 0 ];
	}
	} );
	}( jQuery ) );

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