mini-program-cljs
Version:
1 lines • 95.8 kB
JavaScript
["^ ","~:resource-id",["~:shadow.build.classpath/resource","goog/i18n/bidi.js"],"~:js","goog.provide(\"goog.i18n.bidi\");\ngoog.provide(\"goog.i18n.bidi.Dir\");\ngoog.provide(\"goog.i18n.bidi.DirectionalString\");\ngoog.provide(\"goog.i18n.bidi.Format\");\n/** @define {boolean} */ goog.i18n.bidi.FORCE_RTL = goog.define(\"goog.i18n.bidi.FORCE_RTL\", false);\n/** @type {boolean} */ goog.i18n.bidi.IS_RTL = goog.i18n.bidi.FORCE_RTL || (goog.LOCALE.substring(0, 2).toLowerCase() == \"ar\" || goog.LOCALE.substring(0, 2).toLowerCase() == \"fa\" || goog.LOCALE.substring(0, 2).toLowerCase() == \"he\" || goog.LOCALE.substring(0, 2).toLowerCase() == \"iw\" || goog.LOCALE.substring(0, 2).toLowerCase() == \"ps\" || goog.LOCALE.substring(0, 2).toLowerCase() == \"sd\" || goog.LOCALE.substring(0, 2).toLowerCase() == \"ug\" || goog.LOCALE.substring(0, 2).toLowerCase() == \"ur\" || goog.LOCALE.substring(0, \n2).toLowerCase() == \"yi\") && (goog.LOCALE.length == 2 || goog.LOCALE.substring(2, 3) == \"-\" || goog.LOCALE.substring(2, 3) == \"_\") || goog.LOCALE.length >= 3 && goog.LOCALE.substring(0, 3).toLowerCase() == \"ckb\" && (goog.LOCALE.length == 3 || goog.LOCALE.substring(3, 4) == \"-\" || goog.LOCALE.substring(3, 4) == \"_\") || goog.LOCALE.length >= 7 && ((goog.LOCALE.substring(2, 3) == \"-\" || goog.LOCALE.substring(2, 3) == \"_\") && (goog.LOCALE.substring(3, 7).toLowerCase() == \"adlm\" || goog.LOCALE.substring(3, \n7).toLowerCase() == \"arab\" || goog.LOCALE.substring(3, 7).toLowerCase() == \"hebr\" || goog.LOCALE.substring(3, 7).toLowerCase() == \"nkoo\" || goog.LOCALE.substring(3, 7).toLowerCase() == \"rohg\" || goog.LOCALE.substring(3, 7).toLowerCase() == \"thaa\")) || goog.LOCALE.length >= 8 && ((goog.LOCALE.substring(3, 4) == \"-\" || goog.LOCALE.substring(3, 4) == \"_\") && (goog.LOCALE.substring(4, 8).toLowerCase() == \"adlm\" || goog.LOCALE.substring(4, 8).toLowerCase() == \"arab\" || goog.LOCALE.substring(4, 8).toLowerCase() == \n\"hebr\" || goog.LOCALE.substring(4, 8).toLowerCase() == \"nkoo\" || goog.LOCALE.substring(4, 8).toLowerCase() == \"rohg\" || goog.LOCALE.substring(4, 8).toLowerCase() == \"thaa\"));\n/** @enum {string} */ goog.i18n.bidi.Format = {LRE:\"\", RLE:\"\", PDF:\"\", LRM:\"\", RLM:\"\"};\n/** @enum {number} */ goog.i18n.bidi.Dir = {LTR:1, RTL:-1, NEUTRAL:0};\n/** @type {string} */ goog.i18n.bidi.RIGHT = \"right\";\n/** @type {string} */ goog.i18n.bidi.LEFT = \"left\";\n/** @type {string} */ goog.i18n.bidi.I18N_RIGHT = goog.i18n.bidi.IS_RTL ? goog.i18n.bidi.LEFT : goog.i18n.bidi.RIGHT;\n/** @type {string} */ goog.i18n.bidi.I18N_LEFT = goog.i18n.bidi.IS_RTL ? goog.i18n.bidi.RIGHT : goog.i18n.bidi.LEFT;\n/**\n * @param {(goog.i18n.bidi.Dir|number|boolean|null)} givenDir\n * @param {boolean=} opt_noNeutral\n * @return {?goog.i18n.bidi.Dir}\n */\ngoog.i18n.bidi.toDir = function(givenDir, opt_noNeutral) {\n if (typeof givenDir == \"number\") {\n return givenDir > 0 ? goog.i18n.bidi.Dir.LTR : givenDir < 0 ? goog.i18n.bidi.Dir.RTL : opt_noNeutral ? null : goog.i18n.bidi.Dir.NEUTRAL;\n } else {\n if (givenDir == null) {\n return null;\n } else {\n return givenDir ? goog.i18n.bidi.Dir.RTL : goog.i18n.bidi.Dir.LTR;\n }\n }\n};\n/** @private @type {string} */ goog.i18n.bidi.ltrChars_ = \"A-Za-zÀ-ÖØ-öø-ʸ̀-ऀ-\" + \"Ⰰ-\\ud801\\ud804-\\ud839\\ud83c-\\udbff\" + \"豈-︀--\";\n/** @private @type {string} */ goog.i18n.bidi.rtlChars_ = \"֑-ۯۺ-ࣿ\\ud802-\\ud803\\ud83a-\\ud83b\" + \"יִ-﷿ﹰ-ﻼ\";\n/** @private @type {RegExp} */ goog.i18n.bidi.htmlSkipReg_ = /<[^>]*>|&[^;]+;/g;\n/**\n * @private\n * @param {string} str\n * @param {boolean=} opt_isStripNeeded\n * @return {string}\n */\ngoog.i18n.bidi.stripHtmlIfNeeded_ = function(str, opt_isStripNeeded) {\n return opt_isStripNeeded ? str.replace(goog.i18n.bidi.htmlSkipReg_, \"\") : str;\n};\n/** @private @type {RegExp} */ goog.i18n.bidi.rtlCharReg_ = new RegExp(\"[\" + goog.i18n.bidi.rtlChars_ + \"]\");\n/** @private @type {RegExp} */ goog.i18n.bidi.ltrCharReg_ = new RegExp(\"[\" + goog.i18n.bidi.ltrChars_ + \"]\");\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n */\ngoog.i18n.bidi.hasAnyRtl = function(str, opt_isHtml) {\n return goog.i18n.bidi.rtlCharReg_.test(goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n/**\n * @param {string} str\n * @return {boolean}\n * @deprecated Use hasAnyRtl.\n */\ngoog.i18n.bidi.hasRtlChar = goog.i18n.bidi.hasAnyRtl;\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n */\ngoog.i18n.bidi.hasAnyLtr = function(str, opt_isHtml) {\n return goog.i18n.bidi.ltrCharReg_.test(goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n/** @private @type {RegExp} */ goog.i18n.bidi.ltrRe_ = new RegExp(\"^[\" + goog.i18n.bidi.ltrChars_ + \"]\");\n/** @private @type {RegExp} */ goog.i18n.bidi.rtlRe_ = new RegExp(\"^[\" + goog.i18n.bidi.rtlChars_ + \"]\");\n/**\n * @param {string} str\n * @return {boolean}\n */\ngoog.i18n.bidi.isRtlChar = function(str) {\n return goog.i18n.bidi.rtlRe_.test(str);\n};\n/**\n * @param {string} str\n * @return {boolean}\n */\ngoog.i18n.bidi.isLtrChar = function(str) {\n return goog.i18n.bidi.ltrRe_.test(str);\n};\n/**\n * @param {string} str\n * @return {boolean}\n */\ngoog.i18n.bidi.isNeutralChar = function(str) {\n return !goog.i18n.bidi.isLtrChar(str) && !goog.i18n.bidi.isRtlChar(str);\n};\n/** @private @type {RegExp} */ goog.i18n.bidi.ltrDirCheckRe_ = new RegExp(\"^[^\" + goog.i18n.bidi.rtlChars_ + \"]*[\" + goog.i18n.bidi.ltrChars_ + \"]\");\n/** @private @type {RegExp} */ goog.i18n.bidi.rtlDirCheckRe_ = new RegExp(\"^[^\" + goog.i18n.bidi.ltrChars_ + \"]*[\" + goog.i18n.bidi.rtlChars_ + \"]\");\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n */\ngoog.i18n.bidi.startsWithRtl = function(str, opt_isHtml) {\n return goog.i18n.bidi.rtlDirCheckRe_.test(goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n * @deprecated Use startsWithRtl.\n */\ngoog.i18n.bidi.isRtlText = goog.i18n.bidi.startsWithRtl;\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n */\ngoog.i18n.bidi.startsWithLtr = function(str, opt_isHtml) {\n return goog.i18n.bidi.ltrDirCheckRe_.test(goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n * @deprecated Use startsWithLtr.\n */\ngoog.i18n.bidi.isLtrText = goog.i18n.bidi.startsWithLtr;\n/** @private @type {RegExp} */ goog.i18n.bidi.isRequiredLtrRe_ = /^http:\\/\\/.*/;\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n */\ngoog.i18n.bidi.isNeutralText = function(str, opt_isHtml) {\n str = goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml);\n return goog.i18n.bidi.isRequiredLtrRe_.test(str) || !goog.i18n.bidi.hasAnyLtr(str) && !goog.i18n.bidi.hasAnyRtl(str);\n};\n/** @private @type {RegExp} */ goog.i18n.bidi.ltrExitDirCheckRe_ = new RegExp(\"[\" + goog.i18n.bidi.ltrChars_ + \"]\" + \"[^\" + goog.i18n.bidi.rtlChars_ + \"]*$\");\n/** @private @type {RegExp} */ goog.i18n.bidi.rtlExitDirCheckRe_ = new RegExp(\"[\" + goog.i18n.bidi.rtlChars_ + \"]\" + \"[^\" + goog.i18n.bidi.ltrChars_ + \"]*$\");\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n */\ngoog.i18n.bidi.endsWithLtr = function(str, opt_isHtml) {\n return goog.i18n.bidi.ltrExitDirCheckRe_.test(goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n * @deprecated Use endsWithLtr.\n */\ngoog.i18n.bidi.isLtrExitText = goog.i18n.bidi.endsWithLtr;\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n */\ngoog.i18n.bidi.endsWithRtl = function(str, opt_isHtml) {\n return goog.i18n.bidi.rtlExitDirCheckRe_.test(goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n * @deprecated Use endsWithRtl.\n */\ngoog.i18n.bidi.isRtlExitText = goog.i18n.bidi.endsWithRtl;\n/** @private @type {!RegExp} */ goog.i18n.bidi.rtlLocalesRe_ = new RegExp(\"^(ar|ckb|dv|he|iw|fa|nqo|ps|sd|ug|ur|yi|\" + \".*[-_](Adlm|Arab|Hebr|Nkoo|Rohg|Thaa))\" + \"(?!.*[-_](Latn|Cyrl)($|-|_))($|-|_)\", \"i\");\n/**\n * @param {string} lang\n * @return {boolean}\n */\ngoog.i18n.bidi.isRtlLanguage = function(lang) {\n return goog.i18n.bidi.rtlLocalesRe_.test(lang);\n};\n/** @private @type {RegExp} */ goog.i18n.bidi.bracketGuardTextRe_ = /(\\(.*?\\)+)|(\\[.*?\\]+)|(\\{.*?\\}+)|(<.*?>+)/g;\n/**\n * @param {string} s\n * @param {boolean=} opt_isRtlContext\n * @return {string}\n */\ngoog.i18n.bidi.guardBracketInText = function(s, opt_isRtlContext) {\n /** @const */ var useRtl = opt_isRtlContext === undefined ? goog.i18n.bidi.hasAnyRtl(s) : opt_isRtlContext;\n /** @const */ var mark = useRtl ? goog.i18n.bidi.Format.RLM : goog.i18n.bidi.Format.LRM;\n return s.replace(goog.i18n.bidi.bracketGuardTextRe_, mark + \"$\\x26\" + mark);\n};\n/**\n * @param {string} html\n * @return {string}\n */\ngoog.i18n.bidi.enforceRtlInHtml = function(html) {\n if (html.charAt(0) == \"\\x3c\") {\n return html.replace(/<\\w+/, \"$\\x26 dir\\x3drtl\");\n }\n return \"\\n\\x3cspan dir\\x3drtl\\x3e\" + html + \"\\x3c/span\\x3e\";\n};\n/**\n * @param {string} text\n * @return {string}\n */\ngoog.i18n.bidi.enforceRtlInText = function(text) {\n return goog.i18n.bidi.Format.RLE + text + goog.i18n.bidi.Format.PDF;\n};\n/**\n * @param {string} html\n * @return {string}\n */\ngoog.i18n.bidi.enforceLtrInHtml = function(html) {\n if (html.charAt(0) == \"\\x3c\") {\n return html.replace(/<\\w+/, \"$\\x26 dir\\x3dltr\");\n }\n return \"\\n\\x3cspan dir\\x3dltr\\x3e\" + html + \"\\x3c/span\\x3e\";\n};\n/**\n * @param {string} text\n * @return {string}\n */\ngoog.i18n.bidi.enforceLtrInText = function(text) {\n return goog.i18n.bidi.Format.LRE + text + goog.i18n.bidi.Format.PDF;\n};\n/** @private @type {RegExp} */ goog.i18n.bidi.dimensionsRe_ = /:\\s*([.\\d][.\\w]*)\\s+([.\\d][.\\w]*)\\s+([.\\d][.\\w]*)\\s+([.\\d][.\\w]*)/g;\n/** @private @type {RegExp} */ goog.i18n.bidi.leftRe_ = /left/gi;\n/** @private @type {RegExp} */ goog.i18n.bidi.rightRe_ = /right/gi;\n/** @private @type {RegExp} */ goog.i18n.bidi.tempRe_ = /%%%%/g;\n/**\n * @param {string} cssStr\n * @return {string}\n */\ngoog.i18n.bidi.mirrorCSS = function(cssStr) {\n return cssStr.replace(goog.i18n.bidi.dimensionsRe_, \":$1 $4 $3 $2\").replace(goog.i18n.bidi.leftRe_, \"%%%%\").replace(goog.i18n.bidi.rightRe_, goog.i18n.bidi.LEFT).replace(goog.i18n.bidi.tempRe_, goog.i18n.bidi.RIGHT);\n};\n/** @private @type {RegExp} */ goog.i18n.bidi.doubleQuoteSubstituteRe_ = /([\\u0591-\\u05f2])\"/g;\n/** @private @type {RegExp} */ goog.i18n.bidi.singleQuoteSubstituteRe_ = /([\\u0591-\\u05f2])'/g;\n/**\n * @param {string} str\n * @return {string}\n */\ngoog.i18n.bidi.normalizeHebrewQuote = function(str) {\n return str.replace(goog.i18n.bidi.doubleQuoteSubstituteRe_, \"$1״\").replace(goog.i18n.bidi.singleQuoteSubstituteRe_, \"$1׳\");\n};\n/** @private @type {RegExp} */ goog.i18n.bidi.wordSeparatorRe_ = /\\s+/;\n/** @private @type {RegExp} */ goog.i18n.bidi.hasNumeralsRe_ = /[\\d\\u06f0-\\u06f9]/;\n/** @private @type {number} */ goog.i18n.bidi.rtlDetectionThreshold_ = 0.40;\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {goog.i18n.bidi.Dir}\n */\ngoog.i18n.bidi.estimateDirection = function(str, opt_isHtml) {\n var rtlCount = 0;\n var totalCount = 0;\n var hasWeaklyLtr = false;\n /** @const */ var tokens = goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml).split(goog.i18n.bidi.wordSeparatorRe_);\n for (var i = 0; i < tokens.length; i++) {\n /** @const */ var token = tokens[i];\n if (goog.i18n.bidi.startsWithRtl(token)) {\n rtlCount++;\n totalCount++;\n } else {\n if (goog.i18n.bidi.isRequiredLtrRe_.test(token)) {\n hasWeaklyLtr = true;\n } else {\n if (goog.i18n.bidi.hasAnyLtr(token)) {\n totalCount++;\n } else {\n if (goog.i18n.bidi.hasNumeralsRe_.test(token)) {\n hasWeaklyLtr = true;\n }\n }\n }\n }\n }\n return totalCount == 0 ? hasWeaklyLtr ? goog.i18n.bidi.Dir.LTR : goog.i18n.bidi.Dir.NEUTRAL : rtlCount / totalCount > goog.i18n.bidi.rtlDetectionThreshold_ ? goog.i18n.bidi.Dir.RTL : goog.i18n.bidi.Dir.LTR;\n};\n/**\n * @param {string} str\n * @param {boolean=} opt_isHtml\n * @return {boolean}\n */\ngoog.i18n.bidi.detectRtlDirectionality = function(str, opt_isHtml) {\n return goog.i18n.bidi.estimateDirection(str, opt_isHtml) == goog.i18n.bidi.Dir.RTL;\n};\n/**\n * @param {Element} element\n * @param {(goog.i18n.bidi.Dir|number|boolean|null)} dir\n */\ngoog.i18n.bidi.setElementDirAndAlign = function(element, dir) {\n if (element) {\n /** @const */ var htmlElement = /** @type {!HTMLElement} */ (element);\n dir = goog.i18n.bidi.toDir(dir);\n if (dir) {\n htmlElement.style.textAlign = dir == goog.i18n.bidi.Dir.RTL ? goog.i18n.bidi.RIGHT : goog.i18n.bidi.LEFT;\n htmlElement.dir = dir == goog.i18n.bidi.Dir.RTL ? \"rtl\" : \"ltr\";\n }\n }\n};\n/**\n * @param {!Element} element\n * @param {string} text\n */\ngoog.i18n.bidi.setElementDirByTextDirectionality = function(element, text) {\n /** @const */ var htmlElement = /** @type {!HTMLElement} */ (element);\n switch(goog.i18n.bidi.estimateDirection(text)) {\n case goog.i18n.bidi.Dir.LTR:\n htmlElement.dir = \"ltr\";\n break;\n case goog.i18n.bidi.Dir.RTL:\n htmlElement.dir = \"rtl\";\n break;\n default:\n htmlElement.removeAttribute(\"dir\");\n }\n};\n/** @interface */ goog.i18n.bidi.DirectionalString = function() {\n};\n/** @type {boolean} */ goog.i18n.bidi.DirectionalString.prototype.implementsGoogI18nBidiDirectionalString;\n/**\n * @return {?goog.i18n.bidi.Dir}\n */\ngoog.i18n.bidi.DirectionalString.prototype.getDirection;\n","~:source","// Copyright 2007 The Closure Library Authors. All Rights Reserved.\n//\n// Licensed under the Apache License, Version 2.0 (the \"License\");\n// you may not use this file except in compliance with the License.\n// You may obtain a copy of the License at\n//\n// http://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing, software\n// distributed under the License is distributed on an \"AS-IS\" BASIS,\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n// See the License for the specific language governing permissions and\n// limitations under the License.\n\n/**\n * @fileoverview Utility functions for supporting Bidi issues.\n */\n\n\n/**\n * Namespace for bidi supporting functions.\n */\ngoog.provide('goog.i18n.bidi');\ngoog.provide('goog.i18n.bidi.Dir');\ngoog.provide('goog.i18n.bidi.DirectionalString');\ngoog.provide('goog.i18n.bidi.Format');\n\n\n/**\n * @define {boolean} FORCE_RTL forces the {@link goog.i18n.bidi.IS_RTL} constant\n * to say that the current locale is a RTL locale. This should only be used\n * if you want to override the default behavior for deciding whether the\n * current locale is RTL or not.\n *\n * {@see goog.i18n.bidi.IS_RTL}\n */\ngoog.i18n.bidi.FORCE_RTL = goog.define('goog.i18n.bidi.FORCE_RTL', false);\n\n\n/**\n * Constant that defines whether or not the current locale is a RTL locale.\n * If {@link goog.i18n.bidi.FORCE_RTL} is not true, this constant will default\n * to check that {@link goog.LOCALE} is one of a few major RTL locales.\n *\n * <p>This is designed to be a maximally efficient compile-time constant. For\n * example, for the default goog.LOCALE, compiling\n * \"if (goog.i18n.bidi.IS_RTL) alert('rtl') else {}\" should produce no code. It\n * is this design consideration that limits the implementation to only\n * supporting a few major RTL locales, as opposed to the broader repertoire of\n * something like goog.i18n.bidi.isRtlLanguage.\n *\n * <p>Since this constant refers to the directionality of the locale, it is up\n * to the caller to determine if this constant should also be used for the\n * direction of the UI.\n *\n * {@see goog.LOCALE}\n *\n * @type {boolean}\n *\n * TODO(user): write a test that checks that this is a compile-time constant.\n */\n// LINT.IfChange\ngoog.i18n.bidi.IS_RTL =\n goog.i18n.bidi.FORCE_RTL ||\n ((goog.LOCALE.substring(0, 2).toLowerCase() == 'ar' ||\n goog.LOCALE.substring(0, 2).toLowerCase() == 'fa' ||\n goog.LOCALE.substring(0, 2).toLowerCase() == 'he' ||\n goog.LOCALE.substring(0, 2).toLowerCase() == 'iw' ||\n goog.LOCALE.substring(0, 2).toLowerCase() == 'ps' ||\n goog.LOCALE.substring(0, 2).toLowerCase() == 'sd' ||\n goog.LOCALE.substring(0, 2).toLowerCase() == 'ug' ||\n goog.LOCALE.substring(0, 2).toLowerCase() == 'ur' ||\n goog.LOCALE.substring(0, 2).toLowerCase() == 'yi') &&\n (goog.LOCALE.length == 2 || goog.LOCALE.substring(2, 3) == '-' ||\n goog.LOCALE.substring(2, 3) == '_')) ||\n ( // Specific to CKB (Central Kurdish)\n goog.LOCALE.length >= 3 &&\n goog.LOCALE.substring(0, 3).toLowerCase() == 'ckb' &&\n (goog.LOCALE.length == 3 || goog.LOCALE.substring(3, 4) == '-' ||\n goog.LOCALE.substring(3, 4) == '_')) ||\n ( // 2 letter language codes with RTL scripts\n goog.LOCALE.length >= 7 &&\n ((goog.LOCALE.substring(2, 3) == '-' ||\n goog.LOCALE.substring(2, 3) == '_') &&\n (goog.LOCALE.substring(3, 7).toLowerCase() == 'adlm' ||\n goog.LOCALE.substring(3, 7).toLowerCase() == 'arab' ||\n goog.LOCALE.substring(3, 7).toLowerCase() == 'hebr' ||\n goog.LOCALE.substring(3, 7).toLowerCase() == 'nkoo' ||\n goog.LOCALE.substring(3, 7).toLowerCase() == 'rohg' ||\n goog.LOCALE.substring(3, 7).toLowerCase() == 'thaa'))) ||\n ( // 3 letter languages codes with RTL scripts\n goog.LOCALE.length >= 8 &&\n ((goog.LOCALE.substring(3, 4) == '-' ||\n goog.LOCALE.substring(3, 4) == '_') &&\n (goog.LOCALE.substring(4, 8).toLowerCase() == 'adlm' ||\n goog.LOCALE.substring(4, 8).toLowerCase() == 'arab' ||\n goog.LOCALE.substring(4, 8).toLowerCase() == 'hebr' ||\n goog.LOCALE.substring(4, 8).toLowerCase() == 'nkoo' ||\n goog.LOCALE.substring(4, 8).toLowerCase() == 'rohg' ||\n goog.LOCALE.substring(4, 8).toLowerCase() == 'thaa')));\n// closure/RtlLocalesTest.java)\n\n// TODO(b/77919903): Add additional scripts and languages that are RTL,\n// e.g., mende, samaritan, etc.\n\n\n/**\n * Unicode formatting characters and directionality string constants.\n * @enum {string}\n */\ngoog.i18n.bidi.Format = {\n /** Unicode \"Left-To-Right Embedding\" (LRE) character. */\n LRE: '\\u202A',\n /** Unicode \"Right-To-Left Embedding\" (RLE) character. */\n RLE: '\\u202B',\n /** Unicode \"Pop Directional Formatting\" (PDF) character. */\n PDF: '\\u202C',\n /** Unicode \"Left-To-Right Mark\" (LRM) character. */\n LRM: '\\u200E',\n /** Unicode \"Right-To-Left Mark\" (RLM) character. */\n RLM: '\\u200F'\n};\n\n\n/**\n * Directionality enum.\n * @enum {number}\n */\ngoog.i18n.bidi.Dir = {\n /**\n * Left-to-right.\n */\n LTR: 1,\n\n /**\n * Right-to-left.\n */\n RTL: -1,\n\n /**\n * Neither left-to-right nor right-to-left.\n */\n NEUTRAL: 0\n};\n\n\n/**\n * 'right' string constant.\n * @type {string}\n */\ngoog.i18n.bidi.RIGHT = 'right';\n\n\n/**\n * 'left' string constant.\n * @type {string}\n */\ngoog.i18n.bidi.LEFT = 'left';\n\n\n/**\n * 'left' if locale is RTL, 'right' if not.\n * @type {string}\n */\ngoog.i18n.bidi.I18N_RIGHT =\n goog.i18n.bidi.IS_RTL ? goog.i18n.bidi.LEFT : goog.i18n.bidi.RIGHT;\n\n\n/**\n * 'right' if locale is RTL, 'left' if not.\n * @type {string}\n */\ngoog.i18n.bidi.I18N_LEFT =\n goog.i18n.bidi.IS_RTL ? goog.i18n.bidi.RIGHT : goog.i18n.bidi.LEFT;\n\n\n/**\n * Convert a directionality given in various formats to a goog.i18n.bidi.Dir\n * constant. Useful for interaction with different standards of directionality\n * representation.\n *\n * @param {goog.i18n.bidi.Dir|number|boolean|null} givenDir Directionality given\n * in one of the following formats:\n * 1. A goog.i18n.bidi.Dir constant.\n * 2. A number (positive = LTR, negative = RTL, 0 = neutral).\n * 3. A boolean (true = RTL, false = LTR).\n * 4. A null for unknown directionality.\n * @param {boolean=} opt_noNeutral Whether a givenDir of zero or\n * goog.i18n.bidi.Dir.NEUTRAL should be treated as null, i.e. unknown, in\n * order to preserve legacy behavior.\n * @return {?goog.i18n.bidi.Dir} A goog.i18n.bidi.Dir constant matching the\n * given directionality. If given null, returns null (i.e. unknown).\n */\ngoog.i18n.bidi.toDir = function(givenDir, opt_noNeutral) {\n if (typeof givenDir == 'number') {\n // This includes the non-null goog.i18n.bidi.Dir case.\n return givenDir > 0 ?\n goog.i18n.bidi.Dir.LTR :\n givenDir < 0 ? goog.i18n.bidi.Dir.RTL :\n opt_noNeutral ? null : goog.i18n.bidi.Dir.NEUTRAL;\n } else if (givenDir == null) {\n return null;\n } else {\n // Must be typeof givenDir == 'boolean'.\n return givenDir ? goog.i18n.bidi.Dir.RTL : goog.i18n.bidi.Dir.LTR;\n }\n};\n\n\n/**\n * A practical pattern to identify strong LTR character in the BMP.\n * This pattern is not theoretically correct according to the Unicode\n * standard. It is simplified for performance and small code size.\n * It also partially supports LTR scripts beyond U+FFFF by including\n * UTF-16 high surrogate values corresponding to mostly L-class code\n * point ranges.\n * However, low surrogate values and private-use regions are not included\n * in this RegEx.\n * @type {string}\n * @private\n */\ngoog.i18n.bidi.ltrChars_ =\n 'A-Za-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02B8\\u0300-\\u0590\\u0900-\\u1FFF' +\n '\\u200E\\u2C00-\\uD801\\uD804-\\uD839\\uD83C-\\uDBFF' +\n '\\uF900-\\uFB1C\\uFE00-\\uFE6F\\uFEFD-\\uFFFF';\n\n/**\n * A practical pattern to identify strong RTL character. This pattern is not\n * theoretically correct according to the Unicode standard. It is simplified\n * for performance and small code size.\n * It also partially supports RTL scripts beyond U+FFFF by including\n * UTF-16 high surrogate values corresponding to mostly R- or AL-class\n * code point ranges.\n * However, low surrogate values and private-use regions are not included\n * in this RegEx.\n * @type {string}\n * @private\n */\ngoog.i18n.bidi.rtlChars_ =\n '\\u0591-\\u06EF\\u06FA-\\u08FF\\u200F\\uD802-\\uD803\\uD83A-\\uD83B' +\n '\\uFB1D-\\uFDFF\\uFE70-\\uFEFC';\n\n/**\n * Simplified regular expression for an HTML tag (opening or closing) or an HTML\n * escape. We might want to skip over such expressions when estimating the text\n * directionality.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.htmlSkipReg_ = /<[^>]*>|&[^;]+;/g;\n\n\n/**\n * Returns the input text with spaces instead of HTML tags or HTML escapes, if\n * opt_isStripNeeded is true. Else returns the input as is.\n * Useful for text directionality estimation.\n * Note: the function should not be used in other contexts; it is not 100%\n * correct, but rather a good-enough implementation for directionality\n * estimation purposes.\n * @param {string} str The given string.\n * @param {boolean=} opt_isStripNeeded Whether to perform the stripping.\n * Default: false (to retain consistency with calling functions).\n * @return {string} The given string cleaned of HTML tags / escapes.\n * @private\n */\ngoog.i18n.bidi.stripHtmlIfNeeded_ = function(str, opt_isStripNeeded) {\n return opt_isStripNeeded ? str.replace(goog.i18n.bidi.htmlSkipReg_, '') : str;\n};\n\n\n/**\n * Regular expression to check for RTL characters, BMP and high surrogate.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.rtlCharReg_ = new RegExp('[' + goog.i18n.bidi.rtlChars_ + ']');\n\n\n/**\n * Regular expression to check for LTR characters.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.ltrCharReg_ = new RegExp('[' + goog.i18n.bidi.ltrChars_ + ']');\n\n\n/**\n * Test whether the given string has any RTL characters in it.\n * @param {string} str The given string that need to be tested.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether the string contains RTL characters.\n */\ngoog.i18n.bidi.hasAnyRtl = function(str, opt_isHtml) {\n return goog.i18n.bidi.rtlCharReg_.test(\n goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n\n\n/**\n * Test whether the given string has any RTL characters in it.\n * @param {string} str The given string that need to be tested.\n * @return {boolean} Whether the string contains RTL characters.\n * @deprecated Use hasAnyRtl.\n */\ngoog.i18n.bidi.hasRtlChar = goog.i18n.bidi.hasAnyRtl;\n\n\n/**\n * Test whether the given string has any LTR characters in it.\n * @param {string} str The given string that need to be tested.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether the string contains LTR characters.\n */\ngoog.i18n.bidi.hasAnyLtr = function(str, opt_isHtml) {\n return goog.i18n.bidi.ltrCharReg_.test(\n goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n\n\n/**\n * Regular expression pattern to check if the first character in the string\n * is LTR.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.ltrRe_ = new RegExp('^[' + goog.i18n.bidi.ltrChars_ + ']');\n\n\n/**\n * Regular expression pattern to check if the first character in the string\n * is RTL.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.rtlRe_ = new RegExp('^[' + goog.i18n.bidi.rtlChars_ + ']');\n\n\n/**\n * Check if the first character in the string is RTL or not.\n * @param {string} str The given string that need to be tested.\n * @return {boolean} Whether the first character in str is an RTL char.\n */\ngoog.i18n.bidi.isRtlChar = function(str) {\n return goog.i18n.bidi.rtlRe_.test(str);\n};\n\n\n/**\n * Check if the first character in the string is LTR or not.\n * @param {string} str The given string that need to be tested.\n * @return {boolean} Whether the first character in str is an LTR char.\n */\ngoog.i18n.bidi.isLtrChar = function(str) {\n return goog.i18n.bidi.ltrRe_.test(str);\n};\n\n\n/**\n * Check if the first character in the string is neutral or not.\n * @param {string} str The given string that need to be tested.\n * @return {boolean} Whether the first character in str is a neutral char.\n */\ngoog.i18n.bidi.isNeutralChar = function(str) {\n return !goog.i18n.bidi.isLtrChar(str) && !goog.i18n.bidi.isRtlChar(str);\n};\n\n\n/**\n * Regular expressions to check if a piece of text is of LTR directionality\n * on first character with strong directionality.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.ltrDirCheckRe_ = new RegExp(\n '^[^' + goog.i18n.bidi.rtlChars_ + ']*[' + goog.i18n.bidi.ltrChars_ + ']');\n\n\n/**\n * Regular expressions to check if a piece of text is of RTL directionality\n * on first character with strong directionality.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.rtlDirCheckRe_ = new RegExp(\n '^[^' + goog.i18n.bidi.ltrChars_ + ']*[' + goog.i18n.bidi.rtlChars_ + ']');\n\n\n/**\n * Check whether the first strongly directional character (if any) is RTL.\n * @param {string} str String being checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether RTL directionality is detected using the first\n * strongly-directional character method.\n */\ngoog.i18n.bidi.startsWithRtl = function(str, opt_isHtml) {\n return goog.i18n.bidi.rtlDirCheckRe_.test(\n goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n\n\n/**\n * Check whether the first strongly directional character (if any) is RTL.\n * @param {string} str String being checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether RTL directionality is detected using the first\n * strongly-directional character method.\n * @deprecated Use startsWithRtl.\n */\ngoog.i18n.bidi.isRtlText = goog.i18n.bidi.startsWithRtl;\n\n\n/**\n * Check whether the first strongly directional character (if any) is LTR.\n * @param {string} str String being checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether LTR directionality is detected using the first\n * strongly-directional character method.\n */\ngoog.i18n.bidi.startsWithLtr = function(str, opt_isHtml) {\n return goog.i18n.bidi.ltrDirCheckRe_.test(\n goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n\n\n/**\n * Check whether the first strongly directional character (if any) is LTR.\n * @param {string} str String being checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether LTR directionality is detected using the first\n * strongly-directional character method.\n * @deprecated Use startsWithLtr.\n */\ngoog.i18n.bidi.isLtrText = goog.i18n.bidi.startsWithLtr;\n\n\n/**\n * Regular expression to check if a string looks like something that must\n * always be LTR even in RTL text, e.g. a URL. When estimating the\n * directionality of text containing these, we treat these as weakly LTR,\n * like numbers.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.isRequiredLtrRe_ = /^http:\\/\\/.*/;\n\n\n/**\n * Check whether the input string either contains no strongly directional\n * characters or looks like a url.\n * @param {string} str String being checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether neutral directionality is detected.\n */\ngoog.i18n.bidi.isNeutralText = function(str, opt_isHtml) {\n str = goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml);\n return goog.i18n.bidi.isRequiredLtrRe_.test(str) ||\n !goog.i18n.bidi.hasAnyLtr(str) && !goog.i18n.bidi.hasAnyRtl(str);\n};\n\n\n/**\n * Regular expressions to check if the last strongly-directional character in a\n * piece of text is LTR.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.ltrExitDirCheckRe_ = new RegExp(\n '[' + goog.i18n.bidi.ltrChars_ + ']' +\n '[^' + goog.i18n.bidi.rtlChars_ + ']*$');\n\n\n/**\n * Regular expressions to check if the last strongly-directional character in a\n * piece of text is RTL.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.rtlExitDirCheckRe_ = new RegExp(\n '[' + goog.i18n.bidi.rtlChars_ + ']' +\n '[^' + goog.i18n.bidi.ltrChars_ + ']*$');\n\n\n/**\n * Check if the exit directionality a piece of text is LTR, i.e. if the last\n * strongly-directional character in the string is LTR.\n * @param {string} str String being checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether LTR exit directionality was detected.\n */\ngoog.i18n.bidi.endsWithLtr = function(str, opt_isHtml) {\n return goog.i18n.bidi.ltrExitDirCheckRe_.test(\n goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n\n\n/**\n * Check if the exit directionality a piece of text is LTR, i.e. if the last\n * strongly-directional character in the string is LTR.\n * @param {string} str String being checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether LTR exit directionality was detected.\n * @deprecated Use endsWithLtr.\n */\ngoog.i18n.bidi.isLtrExitText = goog.i18n.bidi.endsWithLtr;\n\n\n/**\n * Check if the exit directionality a piece of text is RTL, i.e. if the last\n * strongly-directional character in the string is RTL.\n * @param {string} str String being checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether RTL exit directionality was detected.\n */\ngoog.i18n.bidi.endsWithRtl = function(str, opt_isHtml) {\n return goog.i18n.bidi.rtlExitDirCheckRe_.test(\n goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml));\n};\n\n\n/**\n * Check if the exit directionality a piece of text is RTL, i.e. if the last\n * strongly-directional character in the string is RTL.\n * @param {string} str String being checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether RTL exit directionality was detected.\n * @deprecated Use endsWithRtl.\n */\ngoog.i18n.bidi.isRtlExitText = goog.i18n.bidi.endsWithRtl;\n\n\n/**\n * A regular expression for matching right-to-left language codes.\n * See {@link #isRtlLanguage} for the design.\n * Note that not all RTL scripts are included.\n * @type {!RegExp}\n * @private\n */\ngoog.i18n.bidi.rtlLocalesRe_ = new RegExp(\n '^(ar|ckb|dv|he|iw|fa|nqo|ps|sd|ug|ur|yi|' +\n '.*[-_](Adlm|Arab|Hebr|Nkoo|Rohg|Thaa))' +\n '(?!.*[-_](Latn|Cyrl)($|-|_))($|-|_)',\n 'i');\n\n\n/**\n * Check if a BCP 47 / III language code indicates an RTL language, i.e. either:\n * - a language code explicitly specifying one of the right-to-left scripts,\n * e.g. \"az-Arab\", or<p>\n * - a language code specifying one of the languages normally written in a\n * right-to-left script, e.g. \"fa\" (Farsi), except ones explicitly specifying\n * Latin or Cyrillic script (which are the usual LTR alternatives).<p>\n * The list of right-to-left scripts appears in the 100-199 range in\n * http://www.unicode.org/iso15924/iso15924-num.html, of which Arabic and\n * Hebrew are by far the most widely used. We also recognize Thaana, and N'Ko,\n * which also have significant modern usage. Adlam and Rohingya\n * scripts are now included since they can be expected to be used in the\n * future. The rest (Syriac, Samaritan, Mandaic, etc.) seem to have extremely\n * limited or no modern usage and are not recognized to save on code size. The\n * languages usually written in a right-to-left script are taken as those with\n * Suppress-Script: Hebr|Arab|Thaa|Nkoo|Adlm|Rohg in\n * http://www.iana.org/assignments/language-subtag-registry,\n * as well as Central (or Sorani) Kurdish (ckb), Sindhi (sd) and Uyghur (ug).\n * Other subtags of the language code, e.g. regions like EG (Egypt), are\n * ignored.\n * @param {string} lang BCP 47 (a.k.a III) language code.\n * @return {boolean} Whether the language code is an RTL language.\n */\ngoog.i18n.bidi.isRtlLanguage = function(lang) {\n return goog.i18n.bidi.rtlLocalesRe_.test(lang);\n};\n\n\n/**\n * Regular expression for bracket guard replacement in text.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.bracketGuardTextRe_ =\n /(\\(.*?\\)+)|(\\[.*?\\]+)|(\\{.*?\\}+)|(<.*?>+)/g;\n\n\n/**\n * Apply bracket guard using LRM and RLM. This is to address the problem of\n * messy bracket display frequently happens in RTL layout.\n * This function works for plain text, not for HTML. In HTML, the opening\n * bracket might be in a different context than the closing bracket (such as\n * an attribute value).\n * @param {string} s The string that need to be processed.\n * @param {boolean=} opt_isRtlContext specifies default direction (usually\n * direction of the UI).\n * @return {string} The processed string, with all bracket guarded.\n */\ngoog.i18n.bidi.guardBracketInText = function(s, opt_isRtlContext) {\n const useRtl = opt_isRtlContext === undefined ? goog.i18n.bidi.hasAnyRtl(s) :\n opt_isRtlContext;\n const mark = useRtl ? goog.i18n.bidi.Format.RLM : goog.i18n.bidi.Format.LRM;\n return s.replace(goog.i18n.bidi.bracketGuardTextRe_, mark + '$&' + mark);\n};\n\n\n/**\n * Enforce the html snippet in RTL directionality regardless of overall context.\n * If the html piece was enclosed by tag, dir will be applied to existing\n * tag, otherwise a span tag will be added as wrapper. For this reason, if\n * html snippet starts with a tag, this tag must enclose the whole piece. If\n * the tag already has a dir specified, this new one will override existing\n * one in behavior (tested on FF and IE).\n * @param {string} html The string that need to be processed.\n * @return {string} The processed string, with directionality enforced to RTL.\n */\ngoog.i18n.bidi.enforceRtlInHtml = function(html) {\n if (html.charAt(0) == '<') {\n return html.replace(/<\\w+/, '$& dir=rtl');\n }\n // '\\n' is important for FF so that it won't incorrectly merge span groups\n return '\\n<span dir=rtl>' + html + '</span>';\n};\n\n\n/**\n * Enforce RTL on both end of the given text piece using unicode BiDi formatting\n * characters RLE and PDF.\n * @param {string} text The piece of text that need to be wrapped.\n * @return {string} The wrapped string after process.\n */\ngoog.i18n.bidi.enforceRtlInText = function(text) {\n return goog.i18n.bidi.Format.RLE + text + goog.i18n.bidi.Format.PDF;\n};\n\n\n/**\n * Enforce the html snippet in RTL directionality regardless or overall context.\n * If the html piece was enclosed by tag, dir will be applied to existing\n * tag, otherwise a span tag will be added as wrapper. For this reason, if\n * html snippet starts with a tag, this tag must enclose the whole piece. If\n * the tag already has a dir specified, this new one will override existing\n * one in behavior (tested on FF and IE).\n * @param {string} html The string that need to be processed.\n * @return {string} The processed string, with directionality enforced to RTL.\n */\ngoog.i18n.bidi.enforceLtrInHtml = function(html) {\n if (html.charAt(0) == '<') {\n return html.replace(/<\\w+/, '$& dir=ltr');\n }\n // '\\n' is important for FF so that it won't incorrectly merge span groups\n return '\\n<span dir=ltr>' + html + '</span>';\n};\n\n\n/**\n * Enforce LTR on both end of the given text piece using unicode BiDi formatting\n * characters LRE and PDF.\n * @param {string} text The piece of text that need to be wrapped.\n * @return {string} The wrapped string after process.\n */\ngoog.i18n.bidi.enforceLtrInText = function(text) {\n return goog.i18n.bidi.Format.LRE + text + goog.i18n.bidi.Format.PDF;\n};\n\n\n/**\n * Regular expression to find dimensions such as \"padding: .3 0.4ex 5px 6;\"\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.dimensionsRe_ =\n /:\\s*([.\\d][.\\w]*)\\s+([.\\d][.\\w]*)\\s+([.\\d][.\\w]*)\\s+([.\\d][.\\w]*)/g;\n\n\n/**\n * Regular expression for left.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.leftRe_ = /left/gi;\n\n\n/**\n * Regular expression for right.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.rightRe_ = /right/gi;\n\n\n/**\n * Placeholder regular expression for swapping.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.tempRe_ = /%%%%/g;\n\n\n/**\n * Swap location parameters and 'left'/'right' in CSS specification. The\n * processed string will be suited for RTL layout. Though this function can\n * cover most cases, there are always exceptions. It is suggested to put\n * those exceptions in separate group of CSS string.\n * @param {string} cssStr CSS spefication string.\n * @return {string} Processed CSS specification string.\n */\ngoog.i18n.bidi.mirrorCSS = function(cssStr) {\n return cssStr\n .\n // reverse dimensions\n replace(goog.i18n.bidi.dimensionsRe_, ':$1 $4 $3 $2')\n .replace(goog.i18n.bidi.leftRe_, '%%%%')\n . // swap left and right\n replace(goog.i18n.bidi.rightRe_, goog.i18n.bidi.LEFT)\n .replace(goog.i18n.bidi.tempRe_, goog.i18n.bidi.RIGHT);\n};\n\n\n/**\n * Regular expression for hebrew double quote substitution, finding quote\n * directly after hebrew characters.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.doubleQuoteSubstituteRe_ = /([\\u0591-\\u05f2])\"/g;\n\n\n/**\n * Regular expression for hebrew single quote substitution, finding quote\n * directly after hebrew characters.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.singleQuoteSubstituteRe_ = /([\\u0591-\\u05f2])'/g;\n\n\n/**\n * Replace the double and single quote directly after a Hebrew character with\n * GERESH and GERSHAYIM. In such case, most likely that's user intention.\n * @param {string} str String that need to be processed.\n * @return {string} Processed string with double/single quote replaced.\n */\ngoog.i18n.bidi.normalizeHebrewQuote = function(str) {\n return str.replace(goog.i18n.bidi.doubleQuoteSubstituteRe_, '$1\\u05f4')\n .replace(goog.i18n.bidi.singleQuoteSubstituteRe_, '$1\\u05f3');\n};\n\n\n/**\n * Regular expression to split a string into \"words\" for directionality\n * estimation based on relative word counts.\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.wordSeparatorRe_ = /\\s+/;\n\n\n/**\n * Regular expression to check if a string contains any numerals. Used to\n * differentiate between completely neutral strings and those containing\n * numbers, which are weakly LTR.\n *\n * Native Arabic digits (\\u0660 - \\u0669) are not included because although they\n * do flow left-to-right inside a number, this is the case even if the overall\n * directionality is RTL, and a mathematical expression using these digits is\n * supposed to flow right-to-left overall, including unary plus and minus\n * appearing to the right of a number, and this does depend on the overall\n * directionality being RTL. The digits used in Farsi (\\u06F0 - \\u06F9), on the\n * other hand, are included, since Farsi math (including unary plus and minus)\n * does flow left-to-right.\n * TODO: Consider other systems of digits, e.g., Adlam.\n *\n * @type {RegExp}\n * @private\n */\ngoog.i18n.bidi.hasNumeralsRe_ = /[\\d\\u06f0-\\u06f9]/;\n\n\n/**\n * This constant controls threshold of RTL directionality.\n * @type {number}\n * @private\n */\ngoog.i18n.bidi.rtlDetectionThreshold_ = 0.40;\n\n\n/**\n * Estimates the directionality of a string based on relative word counts.\n * If the number of RTL words is above a certain percentage of the total number\n * of strongly directional words, returns RTL.\n * Otherwise, if any words are strongly or weakly LTR, returns LTR.\n * Otherwise, returns UNKNOWN, which is used to mean \"neutral\".\n * Numbers are counted as weakly LTR.\n * @param {string} str The string to be checked.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {goog.i18n.bidi.Dir} Estimated overall directionality of `str`.\n */\ngoog.i18n.bidi.estimateDirection = function(str, opt_isHtml) {\n let rtlCount = 0;\n let totalCount = 0;\n let hasWeaklyLtr = false;\n const tokens = goog.i18n.bidi.stripHtmlIfNeeded_(str, opt_isHtml)\n .split(goog.i18n.bidi.wordSeparatorRe_);\n for (let i = 0; i < tokens.length; i++) {\n const token = tokens[i];\n if (goog.i18n.bidi.startsWithRtl(token)) {\n rtlCount++;\n totalCount++;\n } else if (goog.i18n.bidi.isRequiredLtrRe_.test(token)) {\n hasWeaklyLtr = true;\n } else if (goog.i18n.bidi.hasAnyLtr(token)) {\n totalCount++;\n } else if (goog.i18n.bidi.hasNumeralsRe_.test(token)) {\n hasWeaklyLtr = true;\n }\n }\n\n return totalCount == 0 ?\n (hasWeaklyLtr ? goog.i18n.bidi.Dir.LTR : goog.i18n.bidi.Dir.NEUTRAL) :\n (rtlCount / totalCount > goog.i18n.bidi.rtlDetectionThreshold_ ?\n goog.i18n.bidi.Dir.RTL :\n goog.i18n.bidi.Dir.LTR);\n};\n\n\n/**\n * Check the directionality of a piece of text, return true if the piece of\n * text should be laid out in RTL direction.\n * @param {string} str The piece of text that need to be detected.\n * @param {boolean=} opt_isHtml Whether str is HTML / HTML-escaped.\n * Default: false.\n * @return {boolean} Whether this piece of text should be laid out in RTL.\n */\ngoog.i18n.bidi.detectRtlDirectionality = function(str, opt_isHtml) {\n return goog.i18n.bidi.estimateDirection(str, opt_isHtml) ==\n goog.i18n.bidi.Dir.RTL;\n};\n\n\n/**\n * Sets text input element's directionality and text alignment based on a\n * given directionality. Does nothing if the given directionality is unknown or\n * neutral.\n * @param {Element} element Input field element to set directionality to.\n * @param {goog.i18n.bidi.Dir|number|boolean|null} dir Desired directionality,\n * given in one of the following formats:\n * 1. A goog.i18n.bidi.Dir constant.\n * 2. A number (positive = LRT, negative = RTL, 0 = neutral).\n * 3. A boolean (true = RTL, false = LTR).\n * 4. A null for unknown directionality.\n */\ngoog.i18n.bidi.setElementDirAndAlign = function(element, dir) {\n if (element) {\n const htmlElement = /** @type {!HTMLElement} */ (element);\n dir = goog.i18n.bidi.toDir(dir);\n if (dir) {\n htmlElement.style.textAlign = dir == goog.i18n.bidi.Dir.RTL ?\n goog.i18n.bidi.RIGHT :\n goog.i18n.bidi.LEFT;\n htmlElement.dir = dir == goog.i18n.bidi.Dir.RTL ? 'rtl' : 'ltr';\n }\n }\n};\n\n\n/**\n * Sets element dir based on estimated directionality of the given text.\n * @param {!Element} element\n * @param {string} text\n */\ngoog.i18n.bidi.setElementDirByTextDirectionality = function(element, text) {\n const htmlElement = /** @type {!HTMLElement} */ (element);\n switch (goog.i18n.bidi.estimateDirection(text)) {\n case (goog.i18n.bidi.Dir.LTR):\n htmlElement.dir = 'ltr';\n break;\n case (goog.i18n.bidi.Dir.RTL):\n htmlElement.dir = 'rtl';\n break;\n default:\n // Default for no direction, inherit from document.\n htmlElement.removeAttribute('dir');\n }\n};\n\n\n\n/**\n * Strings that have an (optional) known direction.\n *\n * Implementations of this interface are string-like objects that carry an\n * attached direction, if known.\n * @interface\n */\ngoog.i18n.bidi.DirectionalString = function() {};\n\n\n/**\n * Interface marker of the DirectionalString interface.\n *\n * This property can be used to determine at runtime whether or not an object\n * implements this interface. All implementations of this interface set this\n * property to `true`.\n * @type {boolean}\n */\ngoog.i18n.bidi.DirectionalString.prototype\n .implementsGoogI18nBidiDirectionalString;\n\n\n/**\n * Retrieves this object's known direction (if any).\n * @return {?goog.i18n.bidi.Dir} The known direction. 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