| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| /* Portions Copyright Norbert Lindenberg 2011-2012. */ |
| |
| /*global JSMSG_INTL_OBJECT_NOT_INITED: false, JSMSG_INVALID_LOCALES_ELEMENT: false, |
| JSMSG_INVALID_LANGUAGE_TAG: false, JSMSG_INVALID_LOCALE_MATCHER: false, |
| JSMSG_INVALID_OPTION_VALUE: false, JSMSG_INVALID_DIGITS_VALUE: false, |
| JSMSG_INTL_OBJECT_REINITED: false, JSMSG_INVALID_CURRENCY_CODE: false, |
| JSMSG_UNDEFINED_CURRENCY: false, JSMSG_INVALID_TIME_ZONE: false, |
| JSMSG_DATE_NOT_FINITE: false, |
| intl_Collator_availableLocales: false, |
| intl_availableCollations: false, |
| intl_CompareStrings: false, |
| intl_NumberFormat_availableLocales: false, |
| intl_numberingSystem: false, |
| intl_FormatNumber: false, |
| intl_DateTimeFormat_availableLocales: false, |
| intl_availableCalendars: false, |
| intl_patternForSkeleton: false, |
| intl_FormatDateTime: false, |
| */ |
| |
| /* |
| * The Intl module specified by standard ECMA-402, |
| * ECMAScript Internationalization API Specification. |
| */ |
| |
| |
| /********** Locales, Time Zones, and Currencies **********/ |
| |
| |
| /** |
| * Convert s to upper case, but limited to characters a-z. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 6.1. |
| */ |
| function toASCIIUpperCase(s) { |
| assert(typeof s === "string", "toASCIIUpperCase"); |
| |
| // String.prototype.toUpperCase may map non-ASCII characters into ASCII, |
| // so go character by character (actually code unit by code unit, but |
| // since we only care about ASCII characters here, that's OK). |
| var result = ""; |
| for (var i = 0; i < s.length; i++) { |
| var c = s[i]; |
| if ("a" <= c && c <= "z") |
| c = callFunction(std_String_toUpperCase, c); |
| result += c; |
| } |
| return result; |
| } |
| |
| |
| /** |
| * Regular expression matching a "Unicode locale extension sequence", which the |
| * specification defines as: "any substring of a language tag that starts with |
| * a separator '-' and the singleton 'u' and includes the maximum sequence of |
| * following non-singleton subtags and their preceding '-' separators." |
| * |
| * Alternatively, this may be defined as: the components of a language tag that |
| * match the extension production in RFC 5646, where the singleton component is |
| * "u". |
| * |
| * Spec: ECMAScript Internationalization API Specification, 6.2.1. |
| */ |
| var unicodeLocaleExtensionSequence = "-u(-[a-z0-9]{2,8})+"; |
| var unicodeLocaleExtensionSequenceRE = new RegExp(unicodeLocaleExtensionSequence); |
| var unicodeLocaleExtensionSequenceGlobalRE = new RegExp(unicodeLocaleExtensionSequence, "g"); |
| |
| |
| /** |
| * Regular expression defining BCP 47 language tags. |
| * |
| * Spec: RFC 5646 section 2.1. |
| */ |
| var languageTagRE = (function () { |
| // RFC 5234 section B.1 |
| // ALPHA = %x41-5A / %x61-7A ; A-Z / a-z |
| var ALPHA = "[a-zA-Z]"; |
| // DIGIT = %x30-39 |
| // ; 0-9 |
| var DIGIT = "[0-9]"; |
| |
| // RFC 5646 section 2.1 |
| // alphanum = (ALPHA / DIGIT) ; letters and numbers |
| var alphanum = "(?:" + ALPHA + "|" + DIGIT + ")"; |
| // regular = "art-lojban" ; these tags match the 'langtag' |
| // / "cel-gaulish" ; production, but their subtags |
| // / "no-bok" ; are not extended language |
| // / "no-nyn" ; or variant subtags: their meaning |
| // / "zh-guoyu" ; is defined by their registration |
| // / "zh-hakka" ; and all of these are deprecated |
| // / "zh-min" ; in favor of a more modern |
| // / "zh-min-nan" ; subtag or sequence of subtags |
| // / "zh-xiang" |
| var regular = "(?:art-lojban|cel-gaulish|no-bok|no-nyn|zh-guoyu|zh-hakka|zh-min|zh-min-nan|zh-xiang)"; |
| // irregular = "en-GB-oed" ; irregular tags do not match |
| // / "i-ami" ; the 'langtag' production and |
| // / "i-bnn" ; would not otherwise be |
| // / "i-default" ; considered 'well-formed' |
| // / "i-enochian" ; These tags are all valid, |
| // / "i-hak" ; but most are deprecated |
| // / "i-klingon" ; in favor of more modern |
| // / "i-lux" ; subtags or subtag |
| // / "i-mingo" ; combination |
| // / "i-navajo" |
| // / "i-pwn" |
| // / "i-tao" |
| // / "i-tay" |
| // / "i-tsu" |
| // / "sgn-BE-FR" |
| // / "sgn-BE-NL" |
| // / "sgn-CH-DE" |
| var irregular = "(?:en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE)"; |
| // grandfathered = irregular ; non-redundant tags registered |
| // / regular ; during the RFC 3066 era |
| var grandfathered = "(?:" + irregular + "|" + regular + ")"; |
| // privateuse = "x" 1*("-" (1*8alphanum)) |
| var privateuse = "(?:x(?:-[a-z0-9]{1,8})+)"; |
| // singleton = DIGIT ; 0 - 9 |
| // / %x41-57 ; A - W |
| // / %x59-5A ; Y - Z |
| // / %x61-77 ; a - w |
| // / %x79-7A ; y - z |
| var singleton = "(?:" + DIGIT + "|[A-WY-Za-wy-z])"; |
| // extension = singleton 1*("-" (2*8alphanum)) |
| var extension = "(?:" + singleton + "(?:-" + alphanum + "{2,8})+)"; |
| // variant = 5*8alphanum ; registered variants |
| // / (DIGIT 3alphanum) |
| var variant = "(?:" + alphanum + "{5,8}|(?:" + DIGIT + alphanum + "{3}))"; |
| // region = 2ALPHA ; ISO 3166-1 code |
| // / 3DIGIT ; UN M.49 code |
| var region = "(?:" + ALPHA + "{2}|" + DIGIT + "{3})"; |
| // script = 4ALPHA ; ISO 15924 code |
| var script = "(?:" + ALPHA + "{4})"; |
| // extlang = 3ALPHA ; selected ISO 639 codes |
| // *2("-" 3ALPHA) ; permanently reserved |
| var extlang = "(?:" + ALPHA + "{3}(?:-" + ALPHA + "{3}){0,2})"; |
| // language = 2*3ALPHA ; shortest ISO 639 code |
| // ["-" extlang] ; sometimes followed by |
| // ; extended language subtags |
| // / 4ALPHA ; or reserved for future use |
| // / 5*8ALPHA ; or registered language subtag |
| var language = "(?:" + ALPHA + "{2,3}(?:-" + extlang + ")?|" + ALPHA + "{4}|" + ALPHA + "{5,8})"; |
| // langtag = language |
| // ["-" script] |
| // ["-" region] |
| // *("-" variant) |
| // *("-" extension) |
| // ["-" privateuse] |
| var langtag = language + "(?:-" + script + ")?(?:-" + region + ")?(?:-" + |
| variant + ")*(?:-" + extension + ")*(?:-" + privateuse + ")?"; |
| // Language-Tag = langtag ; normal language tags |
| // / privateuse ; private use tag |
| // / grandfathered ; grandfathered tags |
| var languageTag = "^(?:" + langtag + "|" + privateuse + "|" + grandfathered + ")$"; |
| |
| // Language tags are case insensitive (RFC 5646 section 2.1.1). |
| return new RegExp(languageTag, "i"); |
| }()); |
| |
| |
| var duplicateVariantRE = (function () { |
| // RFC 5234 section B.1 |
| // ALPHA = %x41-5A / %x61-7A ; A-Z / a-z |
| var ALPHA = "[a-zA-Z]"; |
| // DIGIT = %x30-39 |
| // ; 0-9 |
| var DIGIT = "[0-9]"; |
| |
| // RFC 5646 section 2.1 |
| // alphanum = (ALPHA / DIGIT) ; letters and numbers |
| var alphanum = "(?:" + ALPHA + "|" + DIGIT + ")"; |
| // variant = 5*8alphanum ; registered variants |
| // / (DIGIT 3alphanum) |
| var variant = "(?:" + alphanum + "{5,8}|(?:" + DIGIT + alphanum + "{3}))"; |
| |
| // Match a langtag that contains a duplicate variant. |
| var duplicateVariant = |
| // Match everything in a langtag prior to any variants, and maybe some |
| // of the variants as well (which makes this pattern inefficient but |
| // not wrong, for our purposes); |
| "(?:" + alphanum + "{2,8}-)+" + |
| // a variant, parenthesised so that we can refer back to it later; |
| "(" + variant + ")-" + |
| // zero or more subtags at least two characters long (thus stopping |
| // before extension and privateuse components); |
| "(?:" + alphanum + "{2,8}-)*" + |
| // and the same variant again |
| "\\1" + |
| // ...but not followed by any characters that would turn it into a |
| // different subtag. |
| "(?!" + alphanum + ")"; |
| |
| // Language tags are case insensitive (RFC 5646 section 2.1.1), but for |
| // this regular expression that's covered by having its character classes |
| // list both upper- and lower-case characters. |
| return new RegExp(duplicateVariant); |
| }()); |
| |
| |
| var duplicateSingletonRE = (function () { |
| // RFC 5234 section B.1 |
| // ALPHA = %x41-5A / %x61-7A ; A-Z / a-z |
| var ALPHA = "[a-zA-Z]"; |
| // DIGIT = %x30-39 |
| // ; 0-9 |
| var DIGIT = "[0-9]"; |
| |
| // RFC 5646 section 2.1 |
| // alphanum = (ALPHA / DIGIT) ; letters and numbers |
| var alphanum = "(?:" + ALPHA + "|" + DIGIT + ")"; |
| // singleton = DIGIT ; 0 - 9 |
| // / %x41-57 ; A - W |
| // / %x59-5A ; Y - Z |
| // / %x61-77 ; a - w |
| // / %x79-7A ; y - z |
| var singleton = "(?:" + DIGIT + "|[A-WY-Za-wy-z])"; |
| |
| // Match a langtag that contains a duplicate singleton. |
| var duplicateSingleton = |
| // Match a singleton subtag, parenthesised so that we can refer back to |
| // it later; |
| "-(" + singleton + ")-" + |
| // then zero or more subtags; |
| "(?:" + alphanum + "+-)*" + |
| // and the same singleton again |
| "\\1" + |
| // ...but not followed by any characters that would turn it into a |
| // different subtag. |
| "(?!" + alphanum + ")"; |
| |
| // Language tags are case insensitive (RFC 5646 section 2.1.1), but for |
| // this regular expression that's covered by having its character classes |
| // list both upper- and lower-case characters. |
| return new RegExp(duplicateSingleton); |
| }()); |
| |
| |
| /** |
| * Verifies that the given string is a well-formed BCP 47 language tag |
| * with no duplicate variant or singleton subtags. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 6.2.2. |
| */ |
| function IsStructurallyValidLanguageTag(locale) { |
| assert(typeof locale === "string", "IsStructurallyValidLanguageTag"); |
| if (!callFunction(std_RegExp_test, languageTagRE, locale)) |
| return false; |
| |
| // Before checking for duplicate variant or singleton subtags with |
| // regular expressions, we have to get private use subtag sequences |
| // out of the picture. |
| if (callFunction(std_String_startsWith, locale, "x-")) |
| return true; |
| var pos = callFunction(std_String_indexOf, locale, "-x-"); |
| if (pos !== -1) |
| locale = callFunction(std_String_substring, locale, 0, pos); |
| |
| // Check for duplicate variant or singleton subtags. |
| return !callFunction(std_RegExp_test, duplicateVariantRE, locale) && |
| !callFunction(std_RegExp_test, duplicateSingletonRE, locale); |
| } |
| |
| |
| /** |
| * Canonicalizes the given structurally valid BCP 47 language tag, including |
| * regularized case of subtags. For example, the language tag |
| * Zh-NAN-haNS-bu-variant2-Variant1-u-ca-chinese-t-Zh-laTN-x-PRIVATE, where |
| * |
| * Zh ; 2*3ALPHA |
| * -NAN ; ["-" extlang] |
| * -haNS ; ["-" script] |
| * -bu ; ["-" region] |
| * -variant2 ; *("-" variant) |
| * -Variant1 |
| * -u-ca-chinese ; *("-" extension) |
| * -t-Zh-laTN |
| * -x-PRIVATE ; ["-" privateuse] |
| * |
| * becomes nan-Hans-mm-variant2-variant1-t-zh-latn-u-ca-chinese-x-private |
| * |
| * Spec: ECMAScript Internationalization API Specification, 6.2.3. |
| * Spec: RFC 5646, section 4.5. |
| */ |
| function CanonicalizeLanguageTag(locale) { |
| assert(IsStructurallyValidLanguageTag(locale), "CanonicalizeLanguageTag"); |
| |
| // The input |
| // "Zh-NAN-haNS-bu-variant2-Variant1-u-ca-chinese-t-Zh-laTN-x-PRIVATE" |
| // will be used throughout this method to illustrate how it works. |
| |
| // Language tags are compared and processed case-insensitively, so |
| // technically it's not necessary to adjust case. But for easier processing, |
| // and because the canonical form for most subtags is lower case, we start |
| // with lower case for all. |
| // "Zh-NAN-haNS-bu-variant2-Variant1-u-ca-chinese-t-Zh-laTN-x-PRIVATE" -> |
| // "zh-nan-hans-bu-variant2-variant1-u-ca-chinese-t-zh-latn-x-private" |
| locale = callFunction(std_String_toLowerCase, locale); |
| |
| // Handle mappings for complete tags. |
| if (callFunction(std_Object_hasOwnProperty, langTagMappings, locale)) |
| return langTagMappings[locale]; |
| |
| var subtags = callFunction(std_String_split, locale, "-"); |
| var i = 0; |
| |
| // Handle the standard part: All subtags before the first singleton or "x". |
| // "zh-nan-hans-bu-variant2-variant1" |
| while (i < subtags.length) { |
| var subtag = subtags[i]; |
| |
| // If we reach the start of an extension sequence or private use part, |
| // we're done with this loop. We have to check for i > 0 because for |
| // irregular language tags, such as i-klingon, the single-character |
| // subtag "i" is not the start of an extension sequence. |
| // In the example, we break at "u". |
| if (subtag.length === 1 && (i > 0 || subtag === "x")) |
| break; |
| |
| if (subtag.length === 4) { |
| // 4-character subtags are script codes; their first character |
| // needs to be capitalized. "hans" -> "Hans" |
| subtag = callFunction(std_String_toUpperCase, subtag[0]) + |
| callFunction(std_String_substring, subtag, 1); |
| } else if (i !== 0 && subtag.length === 2) { |
| // 2-character subtags that are not in initial position are region |
| // codes; they need to be upper case. "bu" -> "BU" |
| subtag = callFunction(std_String_toUpperCase, subtag); |
| } |
| if (callFunction(std_Object_hasOwnProperty, langSubtagMappings, subtag)) { |
| // Replace deprecated subtags with their preferred values. |
| // "BU" -> "MM" |
| // This has to come after we capitalize region codes because |
| // otherwise some language and region codes could be confused. |
| // For example, "in" is an obsolete language code for Indonesian, |
| // but "IN" is the country code for India. |
| // Note that the script generating langSubtagMappings makes sure |
| // that no regular subtag mapping will replace an extlang code. |
| subtag = langSubtagMappings[subtag]; |
| } else if (callFunction(std_Object_hasOwnProperty, extlangMappings, subtag)) { |
| // Replace deprecated extlang subtags with their preferred values, |
| // and remove the preceding subtag if it's a redundant prefix. |
| // "zh-nan" -> "nan" |
| // Note that the script generating extlangMappings makes sure that |
| // no extlang mapping will replace a normal language code. |
| subtag = extlangMappings[subtag].preferred; |
| if (i === 1 && extlangMappings[subtag].prefix === subtags[0]) { |
| callFunction(std_Array_shift, subtags); |
| i--; |
| } |
| } |
| subtags[i] = subtag; |
| i++; |
| } |
| var normal = callFunction(std_Array_join, callFunction(std_Array_slice, subtags, 0, i), "-"); |
| |
| // Extension sequences are sorted by their singleton characters. |
| // "u-ca-chinese-t-zh-latn" -> "t-zh-latn-u-ca-chinese" |
| var extensions = new List(); |
| while (i < subtags.length && subtags[i] !== "x") { |
| var extensionStart = i; |
| i++; |
| while (i < subtags.length && subtags[i].length > 1) |
| i++; |
| var extension = callFunction(std_Array_join, callFunction(std_Array_slice, subtags, extensionStart, i), "-"); |
| extensions.push(extension); |
| } |
| extensions.sort(); |
| |
| // Private use sequences are left as is. "x-private" |
| var privateUse = ""; |
| if (i < subtags.length) |
| privateUse = callFunction(std_Array_join, callFunction(std_Array_slice, subtags, i), "-"); |
| |
| // Put everything back together. |
| var canonical = normal; |
| if (extensions.length > 0) |
| canonical += "-" + extensions.join("-"); |
| if (privateUse.length > 0) { |
| // Be careful of a Language-Tag that is entirely privateuse. |
| if (canonical.length > 0) |
| canonical += "-" + privateUse; |
| else |
| canonical = privateUse; |
| } |
| |
| return canonical; |
| } |
| |
| |
| // mappings from some commonly used old-style language tags to current flavors |
| // with script codes |
| var oldStyleLanguageTagMappings = { |
| "pa-PK": "pa-Arab-PK", |
| "zh-CN": "zh-Hans-CN", |
| "zh-HK": "zh-Hant-HK", |
| "zh-SG": "zh-Hans-SG", |
| "zh-TW": "zh-Hant-TW" |
| }; |
| |
| |
| /** |
| * Returns the BCP 47 language tag for the host environment's current locale. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 6.2.4. |
| */ |
| function DefaultLocale() { |
| // The locale of last resort is used if none of the available locales |
| // satisfies a request. "en-GB" is used based on the assumptions that |
| // English is the most common second language, that both en-GB and en-US |
| // are normally available in an implementation, and that en-GB is more |
| // representative of the English used in other locales. |
| var localeOfLastResort = "en-GB"; |
| |
| var locale = RuntimeDefaultLocale(); |
| if (!IsStructurallyValidLanguageTag(locale)) |
| return localeOfLastResort; |
| |
| locale = CanonicalizeLanguageTag(locale); |
| if (callFunction(std_Object_hasOwnProperty, oldStyleLanguageTagMappings, locale)) |
| locale = oldStyleLanguageTagMappings[locale]; |
| |
| if (!(collatorInternalProperties.availableLocales[locale] && |
| numberFormatInternalProperties.availableLocales[locale] && |
| dateTimeFormatInternalProperties.availableLocales[locale])) |
| { |
| locale = localeOfLastResort; |
| } |
| return locale; |
| } |
| |
| |
| /** |
| * Verifies that the given string is a well-formed ISO 4217 currency code. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 6.3.1. |
| */ |
| function IsWellFormedCurrencyCode(currency) { |
| var c = ToString(currency); |
| var normalized = toASCIIUpperCase(c); |
| if (normalized.length !== 3) |
| return false; |
| return !callFunction(std_RegExp_test, /[^A-Z]/, normalized); |
| } |
| |
| |
| /********** Locale and Parameter Negotiation **********/ |
| |
| |
| /** |
| * Add old-style language tags without script code for locales that in current |
| * usage would include a script subtag. Returns the availableLocales argument |
| * provided. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.1. |
| */ |
| function addOldStyleLanguageTags(availableLocales) { |
| var oldStyleLocales = std_Object_getOwnPropertyNames(oldStyleLanguageTagMappings); |
| for (var i = 0; i < oldStyleLocales.length; i++) { |
| var oldStyleLocale = oldStyleLocales[i]; |
| if (availableLocales[oldStyleLanguageTagMappings[oldStyleLocale]]) |
| availableLocales[oldStyleLocale] = true; |
| } |
| return availableLocales; |
| } |
| |
| |
| /** |
| * Canonicalizes a locale list. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.1. |
| */ |
| function CanonicalizeLocaleList(locales) { |
| if (locales === undefined) |
| return new List(); |
| var seen = new List(); |
| if (typeof locales === "string") |
| locales = [locales]; |
| var O = ToObject(locales); |
| var len = TO_UINT32(O.length); |
| var k = 0; |
| while (k < len) { |
| // Don't call ToString(k) - SpiderMonkey is faster with integers. |
| var kPresent = HasProperty(O, k); |
| if (kPresent) { |
| var kValue = O[k]; |
| if (!(typeof kValue === "string" || IsObject(kValue))) |
| ThrowError(JSMSG_INVALID_LOCALES_ELEMENT); |
| var tag = ToString(kValue); |
| if (!IsStructurallyValidLanguageTag(tag)) |
| ThrowError(JSMSG_INVALID_LANGUAGE_TAG, tag); |
| tag = CanonicalizeLanguageTag(tag); |
| if (seen.indexOf(tag) === -1) |
| seen.push(tag); |
| } |
| k++; |
| } |
| return seen; |
| } |
| |
| |
| /** |
| * Compares a BCP 47 language tag against the locales in availableLocales |
| * and returns the best available match. Uses the fallback |
| * mechanism of RFC 4647, section 3.4. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.2. |
| * Spec: RFC 4647, section 3.4. |
| */ |
| function BestAvailableLocale(availableLocales, locale) { |
| assert(IsStructurallyValidLanguageTag(locale), "BestAvailableLocale"); |
| assert(locale === CanonicalizeLanguageTag(locale), "BestAvailableLocale"); |
| assert(callFunction(std_String_indexOf, locale, "-u-") === -1, "BestAvailableLocale"); |
| |
| var candidate = locale; |
| while (true) { |
| if (availableLocales[candidate]) |
| return candidate; |
| var pos = callFunction(std_String_lastIndexOf, candidate, "-"); |
| if (pos === -1) |
| return undefined; |
| if (pos >= 2 && candidate[pos - 2] === "-") |
| pos -= 2; |
| candidate = callFunction(std_String_substring, candidate, 0, pos); |
| } |
| } |
| |
| |
| /** |
| * Compares a BCP 47 language priority list against the set of locales in |
| * availableLocales and determines the best available language to meet the |
| * request. Options specified through Unicode extension subsequences are |
| * ignored in the lookup, but information about such subsequences is returned |
| * separately. |
| * |
| * This variant is based on the Lookup algorithm of RFC 4647 section 3.4. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.3. |
| * Spec: RFC 4647, section 3.4. |
| */ |
| function LookupMatcher(availableLocales, requestedLocales) { |
| var i = 0; |
| var len = requestedLocales.length; |
| var availableLocale; |
| var locale, noExtensionsLocale; |
| while (i < len && availableLocale === undefined) { |
| locale = requestedLocales[i]; |
| noExtensionsLocale = callFunction(std_String_replace, locale, unicodeLocaleExtensionSequenceGlobalRE, ""); |
| availableLocale = BestAvailableLocale(availableLocales, noExtensionsLocale); |
| i++; |
| } |
| |
| var result = new Record(); |
| if (availableLocale !== undefined) { |
| result.locale = availableLocale; |
| if (locale !== noExtensionsLocale) { |
| var extensionMatch = callFunction(std_String_match, locale, unicodeLocaleExtensionSequenceRE); |
| var extension = extensionMatch[0]; |
| var extensionIndex = extensionMatch.index; |
| result.extension = extension; |
| result.extensionIndex = extensionIndex; |
| } |
| } else { |
| result.locale = DefaultLocale(); |
| } |
| return result; |
| } |
| |
| |
| /** |
| * Compares a BCP 47 language priority list against the set of locales in |
| * availableLocales and determines the best available language to meet the |
| * request. Options specified through Unicode extension subsequences are |
| * ignored in the lookup, but information about such subsequences is returned |
| * separately. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.4. |
| */ |
| function BestFitMatcher(availableLocales, requestedLocales) { |
| // this implementation doesn't have anything better |
| return LookupMatcher(availableLocales, requestedLocales); |
| } |
| |
| |
| /** |
| * Compares a BCP 47 language priority list against availableLocales and |
| * determines the best available language to meet the request. Options specified |
| * through Unicode extension subsequences are negotiated separately, taking the |
| * caller's relevant extensions and locale data as well as client-provided |
| * options into consideration. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.5. |
| */ |
| function ResolveLocale(availableLocales, requestedLocales, options, relevantExtensionKeys, localeData) { |
| /*jshint laxbreak: true */ |
| |
| // Steps 1-3. |
| var matcher = options.localeMatcher; |
| var r = (matcher === "lookup") |
| ? LookupMatcher(availableLocales, requestedLocales) |
| : BestFitMatcher(availableLocales, requestedLocales); |
| |
| // Step 4. |
| var foundLocale = r.locale; |
| |
| // Step 5.a. |
| var extension = r.extension; |
| var extensionIndex, extensionSubtags, extensionSubtagsLength; |
| |
| // Step 5. |
| if (extension !== undefined) { |
| // Step 5.b. |
| extensionIndex = r.extensionIndex; |
| |
| // Steps 5.d-e. |
| extensionSubtags = callFunction(std_String_split, extension, "-"); |
| extensionSubtagsLength = extensionSubtags.length; |
| } |
| |
| // Steps 6-7. |
| var result = new Record(); |
| result.dataLocale = foundLocale; |
| |
| // Step 8. |
| var supportedExtension = "-u"; |
| |
| // Steps 9-11. |
| var i = 0; |
| var len = relevantExtensionKeys.length; |
| while (i < len) { |
| // Steps 11.a-c. |
| var key = relevantExtensionKeys[i]; |
| |
| // In this implementation, localeData is a function, not an object. |
| var foundLocaleData = localeData(foundLocale); |
| var keyLocaleData = foundLocaleData[key]; |
| |
| // Locale data provides default value. |
| // Step 11.d. |
| var value = keyLocaleData[0]; |
| |
| // Locale tag may override. |
| |
| // Step 11.e. |
| var supportedExtensionAddition = ""; |
| |
| // Step 11.f is implemented by Utilities.js. |
| |
| var valuePos; |
| |
| // Step 11.g. |
| if (extensionSubtags !== undefined) { |
| // Step 11.g.i. |
| var keyPos = callFunction(std_Array_indexOf, extensionSubtags, key); |
| |
| // Step 11.g.ii. |
| if (keyPos !== -1) { |
| // Step 11.g.ii.1. |
| if (keyPos + 1 < extensionSubtagsLength && |
| extensionSubtags[keyPos + 1].length > 2) |
| { |
| // Step 11.g.ii.1.a. |
| var requestedValue = extensionSubtags[keyPos + 1]; |
| |
| // Step 11.g.ii.1.b. |
| valuePos = callFunction(std_Array_indexOf, keyLocaleData, requestedValue); |
| |
| // Step 11.g.ii.1.c. |
| if (valuePos !== -1) { |
| value = requestedValue; |
| supportedExtensionAddition = "-" + key + "-" + value; |
| } |
| } else { |
| // Step 11.g.ii.2. |
| |
| // According to the LDML spec, if there's no type value, |
| // and true is an allowed value, it's used. |
| |
| // Step 11.g.ii.2.a. |
| valuePos = callFunction(std_Array_indexOf, keyLocaleData, "true"); |
| |
| // Step 11.g.ii.2.b. |
| if (valuePos !== -1) |
| value = "true"; |
| } |
| } |
| } |
| |
| // Options override all. |
| |
| // Step 11.h.i. |
| var optionsValue = options[key]; |
| |
| // Step 11.h, 11.h.ii. |
| if (optionsValue !== undefined && |
| callFunction(std_Array_indexOf, keyLocaleData, optionsValue) !== -1) |
| { |
| // Step 11.h.ii.1. |
| if (optionsValue !== value) { |
| value = optionsValue; |
| supportedExtensionAddition = ""; |
| } |
| } |
| |
| // Steps 11.i-k. |
| result[key] = value; |
| supportedExtension += supportedExtensionAddition; |
| i++; |
| } |
| |
| // Step 12. |
| if (supportedExtension.length > 2) { |
| var preExtension = callFunction(std_String_substring, foundLocale, 0, extensionIndex); |
| var postExtension = callFunction(std_String_substring, foundLocale, extensionIndex); |
| foundLocale = preExtension + supportedExtension + postExtension; |
| } |
| |
| // Steps 13-14. |
| result.locale = foundLocale; |
| return result; |
| } |
| |
| |
| /** |
| * Returns the subset of requestedLocales for which availableLocales has a |
| * matching (possibly fallback) locale. Locales appear in the same order in the |
| * returned list as in the input list. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.6. |
| */ |
| function LookupSupportedLocales(availableLocales, requestedLocales) { |
| // Steps 1-2. |
| var len = requestedLocales.length; |
| var subset = new List(); |
| |
| // Steps 3-4. |
| var k = 0; |
| while (k < len) { |
| // Steps 4.a-b. |
| var locale = requestedLocales[k]; |
| var noExtensionsLocale = callFunction(std_String_replace, locale, unicodeLocaleExtensionSequenceGlobalRE, ""); |
| |
| // Step 4.c-d. |
| var availableLocale = BestAvailableLocale(availableLocales, noExtensionsLocale); |
| if (availableLocale !== undefined) |
| subset.push(locale); |
| |
| // Step 4.e. |
| k++; |
| } |
| |
| // Steps 5-6. |
| return subset.slice(0); |
| } |
| |
| |
| /** |
| * Returns the subset of requestedLocales for which availableLocales has a |
| * matching (possibly fallback) locale. Locales appear in the same order in the |
| * returned list as in the input list. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.7. |
| */ |
| function BestFitSupportedLocales(availableLocales, requestedLocales) { |
| // don't have anything better |
| return LookupSupportedLocales(availableLocales, requestedLocales); |
| } |
| |
| |
| /** |
| * Returns the subset of requestedLocales for which availableLocales has a |
| * matching (possibly fallback) locale. Locales appear in the same order in the |
| * returned list as in the input list. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.8. |
| */ |
| function SupportedLocales(availableLocales, requestedLocales, options) { |
| /*jshint laxbreak: true */ |
| |
| // Step 1. |
| var matcher; |
| if (options !== undefined) { |
| // Steps 1.a-b. |
| options = ToObject(options); |
| matcher = options.localeMatcher; |
| |
| // Step 1.c. |
| if (matcher !== undefined) { |
| matcher = ToString(matcher); |
| if (matcher !== "lookup" && matcher !== "best fit") |
| ThrowError(JSMSG_INVALID_LOCALE_MATCHER, matcher); |
| } |
| } |
| |
| // Steps 2-3. |
| var subset = (matcher === undefined || matcher === "best fit") |
| ? BestFitSupportedLocales(availableLocales, requestedLocales) |
| : LookupSupportedLocales(availableLocales, requestedLocales); |
| |
| // Step 4. |
| for (var i = 0; i < subset.length; i++) |
| std_Object_defineProperty(subset, i, {value: subset[i], writable: false, enumerable: true, configurable: false}); |
| std_Object_defineProperty(subset, "length", {value: subset.length, writable: false, enumerable: false, configurable: false}); |
| |
| // Step 5. |
| return subset; |
| } |
| |
| |
| /** |
| * Extracts a property value from the provided options object, converts it to |
| * the required type, checks whether it is one of a list of allowed values, |
| * and fills in a fallback value if necessary. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.9. |
| */ |
| function GetOption(options, property, type, values, fallback) { |
| // Step 1. |
| var value = options[property]; |
| |
| // Step 2. |
| if (value !== undefined) { |
| // Steps 2.a-c. |
| if (type === "boolean") |
| value = ToBoolean(value); |
| else if (type === "string") |
| value = ToString(value); |
| else |
| assert(false, "GetOption"); |
| |
| // Step 2.d. |
| if (values !== undefined && callFunction(std_Array_indexOf, values, value) === -1) |
| ThrowError(JSMSG_INVALID_OPTION_VALUE, property, value); |
| |
| // Step 2.e. |
| return value; |
| } |
| |
| // Step 3. |
| return fallback; |
| } |
| |
| /** |
| * Extracts a property value from the provided options object, converts it to a |
| * Number value, checks whether it is in the allowed range, and fills in a |
| * fallback value if necessary. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.2.10. |
| */ |
| function GetNumberOption(options, property, minimum, maximum, fallback) { |
| assert(typeof minimum === "number", "GetNumberOption"); |
| assert(typeof maximum === "number", "GetNumberOption"); |
| assert(fallback === undefined || (fallback >= minimum && fallback <= maximum), "GetNumberOption"); |
| |
| // Step 1. |
| var value = options[property]; |
| |
| // Step 2. |
| if (value !== undefined) { |
| value = ToNumber(value); |
| if (std_isNaN(value) || value < minimum || value > maximum) |
| ThrowError(JSMSG_INVALID_DIGITS_VALUE, value); |
| return std_Math_floor(value); |
| } |
| |
| // Step 3. |
| return fallback; |
| } |
| |
| |
| /********** Property access for Intl objects **********/ |
| |
| |
| /** |
| * Set a normal public property p of o to value v, but use Object.defineProperty |
| * to avoid interference from setters on Object.prototype. |
| */ |
| function defineProperty(o, p, v) { |
| std_Object_defineProperty(o, p, {value: v, writable: true, enumerable: true, configurable: true}); |
| } |
| |
| |
| /** |
| * Weak map holding objects with the properties specified as "internal" for |
| * all Intl API objects. Presence of an object as a key within this map is |
| * considered equivalent to having the [[initializedIntlObject]] internal |
| * property set to true on this object. |
| * |
| * Ideally we'd be using private symbols for internal properties, but |
| * SpiderMonkey doesn't have those yet. |
| */ |
| var internalsMap = new WeakMap(); |
| |
| |
| /** |
| * Create an object holding the properties specified as "internal" for |
| * an Intl API object. This call is equivalent to setting the |
| * [[initializedIntlObject]] internal property of o to true. |
| */ |
| function initializeIntlObject(o) { |
| assert(IsObject(o), "initializeIntlObject"); |
| var internals = std_Object_create(null); |
| callFunction(std_WeakMap_set, internalsMap, o, internals); |
| return internals; |
| } |
| |
| |
| /** |
| * Return whether the object has been initialized as an Intl object, equivalent |
| * to testing whether the [[initializedIntlObject]] internal property of o is |
| * true. |
| */ |
| function isInitializedIntlObject(o) { |
| return callFunction(std_WeakMap_has, internalsMap, o); |
| } |
| |
| |
| /** |
| * Returns the object holding the internal properties of o. |
| */ |
| function getInternals(o) { |
| return callFunction(std_WeakMap_get, internalsMap, o); |
| } |
| |
| |
| /** |
| * Check that the object on which certain functions are called |
| * meet the requirements for "this Collator object", "this NumberFormat object", |
| * "this DateTimeFormat object". If it meets the requirements, return the |
| * object holding its internal properties. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 10.3. |
| * Spec: ECMAScript Internationalization API Specification, 11.3. |
| * Spec: ECMAScript Internationalization API Specification, 12.3. |
| */ |
| function checkIntlAPIObject(o, className, methodName) { |
| assert(typeof className === "string", "checkIntlAPIObject"); |
| var internals = getInternals(o); |
| if (internals === undefined || internals["initialized" + className] !== true) |
| ThrowError(JSMSG_INTL_OBJECT_NOT_INITED, className, methodName, className); |
| assert(IsObject(o), "checkIntlAPIObject"); |
| return internals; |
| } |
| |
| |
| /********** Intl.Collator **********/ |
| |
| |
| /** |
| * Mapping from Unicode extension keys for collation to options properties, |
| * their types and permissible values. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 10.1.1. |
| */ |
| var collatorKeyMappings = { |
| kn: {property: "numeric", type: "boolean"}, |
| kf: {property: "caseFirst", type: "string", values: ["upper", "lower", "false"]} |
| }; |
| |
| |
| /** |
| * Initializes an object as a Collator. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 10.1.1. |
| */ |
| function InitializeCollator(collator, locales, options) { |
| assert(IsObject(collator), "InitializeCollator"); |
| |
| // Step 1. |
| if (isInitializedIntlObject(collator)) |
| ThrowError(JSMSG_INTL_OBJECT_REINITED); |
| |
| // Step 2. |
| var internals = initializeIntlObject(collator); |
| |
| // Step 3. |
| var requestedLocales = CanonicalizeLocaleList(locales); |
| |
| // Steps 4-5. |
| if (options === undefined) |
| options = {}; |
| else |
| options = ToObject(options); |
| |
| // Compute options that impact interpretation of locale. |
| // Steps 6-7. |
| var u = GetOption(options, "usage", "string", ["sort", "search"], "sort"); |
| internals.usage = u; |
| |
| // Step 8. |
| var Collator = collatorInternalProperties; |
| |
| // Step 9. |
| var localeData = u === "sort" ? Collator.sortLocaleData : Collator.searchLocaleData; |
| |
| // Step 10. |
| var opt = new Record(); |
| |
| // Steps 11-12. |
| var matcher = GetOption(options, "localeMatcher", "string", ["lookup", "best fit"], "best fit"); |
| opt.localeMatcher = matcher; |
| |
| // Check all allowed options properties and convert them to extension keys. |
| // Steps 13-13.a. |
| var key, mapping, property, value; |
| for (key in collatorKeyMappings) { |
| if (callFunction(std_Object_hasOwnProperty, collatorKeyMappings, key)) { |
| mapping = collatorKeyMappings[key]; |
| |
| // Step 13.b. |
| value = GetOption(options, mapping.property, mapping.type, mapping.values, undefined); |
| |
| // Step 13.c. |
| if (mapping.type === "boolean" && value !== undefined) |
| value = callFunction(std_Boolean_toString, value); |
| |
| // Step 13.d. |
| opt[key] = value; |
| } |
| } |
| |
| // Compute effective locale. |
| // Step 14. |
| var relevantExtensionKeys = Collator.relevantExtensionKeys; |
| |
| // Step 15. |
| var r = ResolveLocale(Collator.availableLocales, |
| requestedLocales, opt, |
| relevantExtensionKeys, |
| localeData); |
| // Step 16. |
| internals.locale = r.locale; |
| |
| // Steps 17-19. |
| var i = 0, len = relevantExtensionKeys.length; |
| while (i < len) { |
| // Step 19.a. |
| key = relevantExtensionKeys[i]; |
| if (key === "co") { |
| // Step 19.b. |
| property = "collation"; |
| value = r.co === null ? "default" : r.co; |
| } else { |
| // Step 19.c. |
| mapping = collatorKeyMappings[key]; |
| property = mapping.property; |
| value = r[key]; |
| if (mapping.type === "boolean") |
| value = value === "true"; |
| } |
| |
| // Step 19.d. |
| internals[property] = value; |
| |
| // Step 19.e. |
| i++; |
| } |
| |
| // Compute remaining collation options. |
| // Steps 20-21. |
| var s = GetOption(options, "sensitivity", "string", |
| ["base", "accent", "case", "variant"], undefined); |
| if (s === undefined) { |
| if (u === "sort") { |
| // Step 21.a. |
| s = "variant"; |
| } else { |
| // Step 21.b. |
| var dataLocale = r.dataLocale; |
| var dataLocaleData = localeData(dataLocale); |
| s = dataLocaleData.sensitivity; |
| } |
| } |
| |
| // Step 22. |
| internals.sensitivity = s; |
| |
| // Steps 23-24. |
| var ip = GetOption(options, "ignorePunctuation", "boolean", undefined, false); |
| internals.ignorePunctuation = ip; |
| |
| // Step 25. |
| internals.boundFormat = undefined; |
| |
| // Step 26. |
| internals.initializedCollator = true; |
| } |
| |
| |
| /** |
| * Returns the subset of the given locale list for which this locale list has a |
| * matching (possibly fallback) locale. Locales appear in the same order in the |
| * returned list as in the input list. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 10.2.2. |
| */ |
| function Intl_Collator_supportedLocalesOf(locales /*, options*/) { |
| var options = arguments.length > 1 ? arguments[1] : undefined; |
| |
| var availableLocales = collatorInternalProperties.availableLocales; |
| var requestedLocales = CanonicalizeLocaleList(locales); |
| return SupportedLocales(availableLocales, requestedLocales, options); |
| } |
| |
| |
| /** |
| * Collator internal properties. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.1 and 10.2.3. |
| */ |
| var collatorInternalProperties = { |
| sortLocaleData: collatorSortLocaleData, |
| searchLocaleData: collatorSearchLocaleData, |
| availableLocales: addOldStyleLanguageTags(intl_Collator_availableLocales()), |
| relevantExtensionKeys: ["co", "kn"] |
| }; |
| |
| |
| function collatorSortLocaleData(locale) { |
| var collations = intl_availableCollations(locale); |
| callFunction(std_Array_unshift, collations, null); |
| return { |
| co: collations, |
| kn: ["false", "true"] |
| }; |
| } |
| |
| |
| function collatorSearchLocaleData(locale) { |
| return { |
| co: [null], |
| kn: ["false", "true"], |
| // In theory the default sensitivity is locale dependent; |
| // in reality the CLDR/ICU default strength is always tertiary. |
| sensitivity: "variant" |
| }; |
| } |
| |
| |
| /** |
| * Function to be bound and returned by Intl.Collator.prototype.format. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.3.2. |
| */ |
| function collatorCompareToBind(x, y) { |
| // Steps 1.a.i-ii implemented by ECMAScript declaration binding instantiation, |
| // ES5.1 10.5, step 4.d.ii. |
| |
| // Step 1.a.iii-v. |
| var X = ToString(x); |
| var Y = ToString(y); |
| return intl_CompareStrings(this, X, Y); |
| } |
| |
| |
| /** |
| * Returns a function bound to this Collator that compares x (converted to a |
| * String value) and y (converted to a String value), |
| * and returns a number less than 0 if x < y, 0 if x = y, or a number greater |
| * than 0 if x > y according to the sort order for the locale and collation |
| * options of this Collator object. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 10.3.2. |
| */ |
| function Intl_Collator_compare_get() { |
| // Check "this Collator object" per introduction of section 10.3. |
| var internals = checkIntlAPIObject(this, "Collator", "compare"); |
| |
| // Step 1. |
| if (internals.boundCompare === undefined) { |
| // Step 1.a. |
| var F = collatorCompareToBind; |
| |
| // Step 1.b-d. |
| var bc = callFunction(std_Function_bind, F, this); |
| internals.boundCompare = bc; |
| } |
| |
| // Step 2. |
| return internals.boundCompare; |
| } |
| |
| |
| /** |
| * Returns the resolved options for a Collator object. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 10.3.3 and 10.4. |
| */ |
| function Intl_Collator_resolvedOptions() { |
| // Check "this Collator object" per introduction of section 10.3. |
| var internals = checkIntlAPIObject(this, "Collator", "resolvedOptions"); |
| |
| var result = { |
| locale: internals.locale, |
| usage: internals.usage, |
| sensitivity: internals.sensitivity, |
| ignorePunctuation: internals.ignorePunctuation |
| }; |
| |
| var relevantExtensionKeys = collatorInternalProperties.relevantExtensionKeys; |
| for (var i = 0; i < relevantExtensionKeys.length; i++) { |
| var key = relevantExtensionKeys[i]; |
| var property = (key === "co") ? "collation" : collatorKeyMappings[key].property; |
| defineProperty(result, property, internals[property]); |
| } |
| return result; |
| } |
| |
| |
| /********** Intl.NumberFormat **********/ |
| |
| |
| /** |
| * Initializes an object as a NumberFormat. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 11.1.1. |
| */ |
| function InitializeNumberFormat(numberFormat, locales, options) { |
| assert(IsObject(numberFormat), "InitializeNumberFormat"); |
| |
| // Step 1. |
| if (isInitializedIntlObject(numberFormat)) |
| ThrowError(JSMSG_INTL_OBJECT_REINITED); |
| |
| // Step 2. |
| var internals = initializeIntlObject(numberFormat); |
| |
| // Step 3. |
| var requestedLocales = CanonicalizeLocaleList(locales); |
| |
| // Steps 4-5. |
| if (options === undefined) |
| options = {}; |
| else |
| options = ToObject(options); |
| |
| // Compute options that impact interpretation of locale. |
| // Step 6. |
| var opt = new Record(); |
| |
| // Steps 7-8. |
| var matcher = GetOption(options, "localeMatcher", "string", ["lookup", "best fit"], "best fit"); |
| opt.localeMatcher = matcher; |
| |
| // Compute effective locale. |
| // Step 9. |
| var NumberFormat = numberFormatInternalProperties; |
| |
| // Step 10. |
| var localeData = NumberFormat.localeData; |
| |
| // Step 11. |
| var r = ResolveLocale(NumberFormat.availableLocales, |
| requestedLocales, opt, |
| NumberFormat.relevantExtensionKeys, |
| localeData); |
| |
| // Steps 12-14. |
| internals.locale = r.locale; |
| internals.numberingSystem = r.nu; |
| var dataLocale = r.dataLocale; |
| |
| // Compute formatting options. |
| // Steps 15-16. |
| var s = GetOption(options, "style", "string", ["decimal", "percent", "currency"], "decimal"); |
| internals.style = s; |
| |
| // Steps 17-20. |
| var c = GetOption(options, "currency", "string", undefined, undefined); |
| if (c !== undefined && !IsWellFormedCurrencyCode(c)) |
| ThrowError(JSMSG_INVALID_CURRENCY_CODE, c); |
| var cDigits; |
| if (s === "currency") { |
| if (c === undefined) |
| ThrowError(JSMSG_UNDEFINED_CURRENCY); |
| |
| // Steps 20.a-c. |
| c = toASCIIUpperCase(c); |
| internals.currency = c; |
| cDigits = CurrencyDigits(c); |
| } |
| |
| // Steps 21-22. |
| var cd = GetOption(options, "currencyDisplay", "string", ["code", "symbol", "name"], "symbol"); |
| if (s === "currency") |
| internals.currencyDisplay = cd; |
| |
| // Steps 23-24. |
| var mnid = GetNumberOption(options, "minimumIntegerDigits", 1, 21, 1); |
| internals.minimumIntegerDigits = mnid; |
| |
| // Steps 25-27. |
| var mnfdDefault = (s === "currency") ? cDigits : 0; |
| var mnfd = GetNumberOption(options, "minimumFractionDigits", 0, 20, mnfdDefault); |
| internals.minimumFractionDigits = mnfd; |
| |
| // Steps 28-30. |
| var mxfdDefault; |
| if (s === "currency") |
| mxfdDefault = std_Math_max(mnfd, cDigits); |
| else if (s === "percent") |
| mxfdDefault = std_Math_max(mnfd, 0); |
| else |
| mxfdDefault = std_Math_max(mnfd, 3); |
| var mxfd = GetNumberOption(options, "maximumFractionDigits", mnfd, 20, mxfdDefault); |
| internals.maximumFractionDigits = mxfd; |
| |
| // Steps 31-32. |
| var mnsd = options.minimumSignificantDigits; |
| var mxsd = options.maximumSignificantDigits; |
| |
| // Step 33. |
| if (mnsd !== undefined || mxsd !== undefined) { |
| mnsd = GetNumberOption(options, "minimumSignificantDigits", 1, 21, 1); |
| mxsd = GetNumberOption(options, "maximumSignificantDigits", mnsd, 21, 21); |
| internals.minimumSignificantDigits = mnsd; |
| internals.maximumSignificantDigits = mxsd; |
| } |
| |
| // Steps 34-35. |
| var g = GetOption(options, "useGrouping", "boolean", undefined, true); |
| internals.useGrouping = g; |
| |
| // ??? Steps 36-41 to be provided by concrete implementation. |
| |
| // Step 42. |
| internals.boundFormat = undefined; |
| |
| // Step 43. |
| internals.initializedNumberFormat = true; |
| } |
| |
| |
| /** |
| * Mapping from currency codes to the number of decimal digits used for them. |
| * Default is 2 digits. |
| * |
| * Spec: ISO 4217 Currency and Funds Code List. |
| * http://www.currency-iso.org/en/home/tables/table-a1.html |
| */ |
| var currencyDigits = { |
| BHD: 3, |
| BIF: 0, |
| BYR: 0, |
| CLF: 0, |
| CLP: 0, |
| DJF: 0, |
| IQD: 3, |
| GNF: 0, |
| ISK: 0, |
| JOD: 3, |
| JPY: 0, |
| KMF: 0, |
| KRW: 0, |
| KWD: 3, |
| LYD: 3, |
| OMR: 3, |
| PYG: 0, |
| RWF: 0, |
| TND: 3, |
| UGX: 0, |
| UYI: 0, |
| VND: 0, |
| VUV: 0, |
| XAF: 0, |
| XOF: 0, |
| XPF: 0 |
| }; |
| |
| |
| /** |
| * Returns the number of decimal digits to be used for the given currency. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 11.1.1. |
| */ |
| function CurrencyDigits(currency) { |
| assert(typeof currency === "string", "CurrencyDigits"); |
| assert(callFunction(std_RegExp_test, /^[A-Z]{3}$/, currency), "CurrencyDigits"); |
| |
| if (callFunction(std_Object_hasOwnProperty, currencyDigits, currency)) |
| return currencyDigits[currency]; |
| return 2; |
| } |
| |
| |
| /** |
| * Returns the subset of the given locale list for which this locale list has a |
| * matching (possibly fallback) locale. Locales appear in the same order in the |
| * returned list as in the input list. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 11.2.2. |
| */ |
| function Intl_NumberFormat_supportedLocalesOf(locales /*, options*/) { |
| var options = arguments.length > 1 ? arguments[1] : undefined; |
| |
| var availableLocales = numberFormatInternalProperties.availableLocales; |
| var requestedLocales = CanonicalizeLocaleList(locales); |
| return SupportedLocales(availableLocales, requestedLocales, options); |
| } |
| |
| |
| /** |
| * NumberFormat internal properties. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.1 and 11.2.3. |
| */ |
| var numberFormatInternalProperties = { |
| localeData: numberFormatLocaleData, |
| availableLocales: addOldStyleLanguageTags(intl_NumberFormat_availableLocales()), |
| relevantExtensionKeys: ["nu"] |
| }; |
| |
| |
| function getNumberingSystems(locale) { |
| // ICU doesn't have an API to determine the set of numbering systems |
| // supported for a locale; it generally pretends that any numbering system |
| // can be used with any locale. Supporting a decimal numbering system |
| // (where only the digits are replaced) is easy, so we offer them all here. |
| // Algorithmic numbering systems are typically tied to one locale, so for |
| // lack of information we don't offer them. To increase chances that |
| // other software will process output correctly, we further restrict to |
| // those decimal numbering systems explicitly listed in table 2 of |
| // the ECMAScript Internationalization API Specification, 11.3.2, which |
| // in turn are those with full specifications in version 21 of Unicode |
| // Technical Standard #35 using digits that were defined in Unicode 5.0, |
| // the Unicode version supported in Windows Vista. |
| // The one thing we can find out from ICU is the default numbering system |
| // for a locale. |
| var defaultNumberingSystem = intl_numberingSystem(locale); |
| return [ |
| defaultNumberingSystem, |
| "arab", "arabext", "bali", "beng", "deva", |
| "fullwide", "gujr", "guru", "hanidec", "khmr", |
| "knda", "laoo", "latn", "limb", "mlym", |
| "mong", "mymr", "orya", "tamldec", "telu", |
| "thai", "tibt" |
| ]; |
| } |
| |
| |
| function numberFormatLocaleData(locale) { |
| return { |
| nu: getNumberingSystems(locale) |
| }; |
| } |
| |
| |
| /** |
| * Function to be bound and returned by Intl.NumberFormat.prototype.format. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 11.3.2. |
| */ |
| function numberFormatFormatToBind(value) { |
| // Steps 1.a.i implemented by ECMAScript declaration binding instantiation, |
| // ES5.1 10.5, step 4.d.ii. |
| |
| // Step 1.a.ii-iii. |
| var x = ToNumber(value); |
| return intl_FormatNumber(this, x); |
| } |
| |
| |
| /** |
| * Returns a function bound to this NumberFormat that returns a String value |
| * representing the result of calling ToNumber(value) according to the |
| * effective locale and the formatting options of this NumberFormat. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 11.3.2. |
| */ |
| function Intl_NumberFormat_format_get() { |
| // Check "this NumberFormat object" per introduction of section 11.3. |
| var internals = checkIntlAPIObject(this, "NumberFormat", "format"); |
| |
| // Step 1. |
| if (internals.boundFormat === undefined) { |
| // Step 1.a. |
| var F = numberFormatFormatToBind; |
| |
| // Step 1.b-d. |
| var bf = callFunction(std_Function_bind, F, this); |
| internals.boundFormat = bf; |
| } |
| // Step 2. |
| return internals.boundFormat; |
| } |
| |
| |
| /** |
| * Returns the resolved options for a NumberFormat object. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 11.3.3 and 11.4. |
| */ |
| function Intl_NumberFormat_resolvedOptions() { |
| // Check "this NumberFormat object" per introduction of section 11.3. |
| var internals = checkIntlAPIObject(this, "NumberFormat", "resolvedOptions"); |
| |
| var result = { |
| locale: internals.locale, |
| numberingSystem: internals.numberingSystem, |
| style: internals.style, |
| minimumIntegerDigits: internals.minimumIntegerDigits, |
| minimumFractionDigits: internals.minimumFractionDigits, |
| maximumFractionDigits: internals.maximumFractionDigits, |
| useGrouping: internals.useGrouping |
| }; |
| var optionalProperties = [ |
| "currency", |
| "currencyDisplay", |
| "minimumSignificantDigits", |
| "maximumSignificantDigits" |
| ]; |
| for (var i = 0; i < optionalProperties.length; i++) { |
| var p = optionalProperties[i]; |
| if (callFunction(std_Object_hasOwnProperty, internals, p)) |
| defineProperty(result, p, internals[p]); |
| } |
| return result; |
| } |
| |
| |
| /********** Intl.DateTimeFormat **********/ |
| |
| |
| /** |
| * Components of date and time formats and their values. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.1.1. |
| */ |
| var dateTimeComponentValues = { |
| weekday: ["narrow", "short", "long"], |
| era: ["narrow", "short", "long"], |
| year: ["2-digit", "numeric"], |
| month: ["2-digit", "numeric", "narrow", "short", "long"], |
| day: ["2-digit", "numeric"], |
| hour: ["2-digit", "numeric"], |
| minute: ["2-digit", "numeric"], |
| second: ["2-digit", "numeric"], |
| timeZoneName: ["short", "long"] |
| }; |
| |
| |
| var dateTimeComponents = std_Object_getOwnPropertyNames(dateTimeComponentValues); |
| |
| |
| /** |
| * Initializes an object as a DateTimeFormat. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.1.1. |
| */ |
| function InitializeDateTimeFormat(dateTimeFormat, locales, options) { |
| assert(IsObject(dateTimeFormat), "InitializeDateTimeFormat"); |
| |
| // Step 1. |
| if (isInitializedIntlObject(dateTimeFormat)) |
| ThrowError(JSMSG_INTL_OBJECT_REINITED); |
| |
| // Step 2. |
| var internals = initializeIntlObject(dateTimeFormat); |
| |
| // Step 3. |
| var requestedLocales = CanonicalizeLocaleList(locales); |
| |
| // Step 4. |
| options = ToDateTimeOptions(options, "any", "date"); |
| |
| // Compute options that impact interpretation of locale. |
| // Step 5. |
| var opt = new Record(); |
| |
| // Steps 6-7. |
| var matcher = GetOption(options, "localeMatcher", "string", ["lookup", "best fit"], "best fit"); |
| opt.localeMatcher = matcher; |
| |
| // Compute effective locale. |
| // Step 8. |
| var DateTimeFormat = dateTimeFormatInternalProperties; |
| |
| // Step 9. |
| var localeData = DateTimeFormat.localeData; |
| |
| // Step 10. |
| var r = ResolveLocale(DateTimeFormat.availableLocales, |
| requestedLocales, opt, |
| DateTimeFormat.relevantExtensionKeys, |
| localeData); |
| |
| // Steps 11-13. |
| internals.locale = r.locale; |
| internals.calendar = r.ca; |
| internals.numberingSystem = r.nu; |
| |
| // Compute formatting options. |
| // Step 14. |
| var dataLocale = r.dataLocale; |
| |
| // Steps 15-17. |
| var tz = options.timeZone; |
| if (tz !== undefined) { |
| tz = toASCIIUpperCase(ToString(tz)); |
| if (tz !== "UTC") |
| ThrowError(JSMSG_INVALID_TIME_ZONE, tz); |
| } |
| internals.timeZone = tz; |
| |
| // Step 18. |
| opt = new Record(); |
| |
| // Step 19. |
| var i, prop; |
| for (i = 0; i < dateTimeComponents.length; i++) { |
| prop = dateTimeComponents[i]; |
| var value = GetOption(options, prop, "string", dateTimeComponentValues[prop], undefined); |
| opt[prop] = value; |
| } |
| |
| // Steps 20-21 provided by ICU - see comment after this function. |
| |
| // Step 22. |
| matcher = GetOption(options, "formatMatcher", "string", ["basic", "best fit"], "best fit"); |
| |
| // Steps 23-25 provided by ICU, more or less - see comment after this function. |
| |
| // Step 26. |
| var hr12 = GetOption(options, "hour12", "boolean", undefined, undefined); |
| |
| // Pass hr12 on to ICU. |
| if (hr12 !== undefined) |
| opt.hour12 = hr12; |
| |
| // Steps 27-28, more or less - see comment after this function. |
| var pattern = toBestICUPattern(dataLocale, opt); |
| |
| // Step 29. |
| internals.pattern = pattern; |
| |
| // Step 30. |
| internals.boundFormat = undefined; |
| |
| // Step 31. |
| internals.initializedDateTimeFormat = true; |
| } |
| |
| |
| // Intl.DateTimeFormat and ICU skeletons and patterns |
| // ================================================== |
| // |
| // Different locales have different ways to display dates using the same |
| // basic components. For example, en-US might use "Sept. 24, 2012" while |
| // fr-FR might use "24 Sept. 2012". The intent of Intl.DateTimeFormat is to |
| // permit production of a format for the locale that best matches the |
| // set of date-time components and their desired representation as specified |
| // by the API client. |
| // |
| // ICU supports specification of date and time formats in three ways: |
| // |
| // 1) A style is just one of the identifiers FULL, LONG, MEDIUM, or SHORT. |
| // The date-time components included in each style and their representation |
| // are defined by ICU using CLDR locale data (CLDR is the Unicode |
| // Consortium's Common Locale Data Repository). |
| // |
| // 2) A skeleton is a string specifying which date-time components to include, |
| // and which representations to use for them. For example, "yyyyMMMMdd" |
| // specifies a year with at least four digits, a full month name, and a |
| // two-digit day. It does not specify in which order the components appear, |
| // how they are separated, the localized strings for textual components |
| // (such as weekday or month), whether the month is in format or |
| // stand-alone form¹, or the numbering system used for numeric components. |
| // All that information is filled in by ICU using CLDR locale data. |
| // ¹ The format form is the one used in formatted strings that include a |
| // day; the stand-alone form is used when not including days, e.g., in |
| // calendar headers. The two forms differ at least in some Slavic languages, |
| // e.g. Russian: "22 марта 2013 г." vs. "Март 2013". |
| // |
| // 3) A pattern is a string specifying which date-time components to include, |
| // in which order, with which separators, in which grammatical case. For |
| // example, "EEEE, d MMMM y" specifies the full localized weekday name, |
| // followed by comma and space, followed by the day, followed by space, |
| // followed by the full month name in format form, followed by space, |
| // followed by the full year. It |
| // still does not specify localized strings for textual components and the |
| // numbering system - these are determined by ICU using CLDR locale data or |
| // possibly API parameters. |
| // |
| // All actual formatting in ICU is done with patterns; styles and skeletons |
| // have to be mapped to patterns before processing. |
| // |
| // The options of DateTimeFormat most closely correspond to ICU skeletons. This |
| // implementation therefore, in the toBestICUPattern function, converts |
| // DateTimeFormat options to ICU skeletons, and then lets ICU map skeletons to |
| // actual ICU patterns. The pattern may not directly correspond to what the |
| // skeleton requests, as the mapper (UDateTimePatternGenerator) is constrained |
| // by the available locale data for the locale. The resulting ICU pattern is |
| // kept as the DateTimeFormat's [[pattern]] internal property and passed to ICU |
| // in the format method. |
| // |
| // An ICU pattern represents the information of the following DateTimeFormat |
| // internal properties described in the specification, which therefore don't |
| // exist separately in the implementation: |
| // - [[weekday]], [[era]], [[year]], [[month]], [[day]], [[hour]], [[minute]], |
| // [[second]], [[timeZoneName]] |
| // - [[hour12]] |
| // - [[hourNo0]] |
| // When needed for the resolvedOptions method, the resolveICUPattern function |
| // maps the instance's ICU pattern back to the specified properties of the |
| // object returned by resolvedOptions. |
| // |
| // ICU date-time skeletons and patterns aren't fully documented in the ICU |
| // documentation (see http://bugs.icu-project.org/trac/ticket/9627). The best |
| // documentation at this point is in UTR 35: |
| // http://unicode.org/reports/tr35/tr35-dates.html#Date_Format_Patterns |
| |
| |
| /** |
| * Returns an ICU pattern string for the given locale and representing the |
| * specified options as closely as possible given available locale data. |
| */ |
| function toBestICUPattern(locale, options) { |
| // Create an ICU skeleton representing the specified options. See |
| // http://unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table |
| var skeleton = ""; |
| switch (options.weekday) { |
| case "narrow": |
| skeleton += "EEEEE"; |
| break; |
| case "short": |
| skeleton += "E"; |
| break; |
| case "long": |
| skeleton += "EEEE"; |
| } |
| switch (options.era) { |
| case "narrow": |
| skeleton += "GGGGG"; |
| break; |
| case "short": |
| skeleton += "G"; |
| break; |
| case "long": |
| skeleton += "GGGG"; |
| break; |
| } |
| switch (options.year) { |
| case "2-digit": |
| skeleton += "yy"; |
| break; |
| case "numeric": |
| skeleton += "y"; |
| break; |
| } |
| switch (options.month) { |
| case "2-digit": |
| skeleton += "MM"; |
| break; |
| case "numeric": |
| skeleton += "M"; |
| break; |
| case "narrow": |
| skeleton += "MMMMM"; |
| break; |
| case "short": |
| skeleton += "MMM"; |
| break; |
| case "long": |
| skeleton += "MMMM"; |
| break; |
| } |
| switch (options.day) { |
| case "2-digit": |
| skeleton += "dd"; |
| break; |
| case "numeric": |
| skeleton += "d"; |
| break; |
| } |
| var hourSkeletonChar = "j"; |
| if (options.hour12 !== undefined) { |
| if (options.hour12) |
| hourSkeletonChar = "h"; |
| else |
| hourSkeletonChar = "H"; |
| } |
| switch (options.hour) { |
| case "2-digit": |
| skeleton += hourSkeletonChar + hourSkeletonChar; |
| break; |
| case "numeric": |
| skeleton += hourSkeletonChar; |
| break; |
| } |
| switch (options.minute) { |
| case "2-digit": |
| skeleton += "mm"; |
| break; |
| case "numeric": |
| skeleton += "m"; |
| break; |
| } |
| switch (options.second) { |
| case "2-digit": |
| skeleton += "ss"; |
| break; |
| case "numeric": |
| skeleton += "s"; |
| break; |
| } |
| switch (options.timeZoneName) { |
| case "short": |
| skeleton += "z"; |
| break; |
| case "long": |
| skeleton += "zzzz"; |
| break; |
| } |
| |
| // Let ICU convert the ICU skeleton to an ICU pattern for the given locale. |
| return intl_patternForSkeleton(locale, skeleton); |
| } |
| |
| |
| /** |
| * Returns a new options object that includes the provided options (if any) |
| * and fills in default components if required components are not defined. |
| * Required can be "date", "time", or "any". |
| * Defaults can be "date", "time", or "all". |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.1.1. |
| */ |
| function ToDateTimeOptions(options, required, defaults) { |
| assert(typeof required === "string", "ToDateTimeOptions"); |
| assert(typeof defaults === "string", "ToDateTimeOptions"); |
| |
| // Steps 1-3. |
| if (options === undefined) |
| options = null; |
| else |
| options = ToObject(options); |
| options = std_Object_create(options); |
| |
| // Step 4. |
| var needDefaults = true; |
| |
| // Step 5. |
| if ((required === "date" || required === "any") && |
| (options.weekday !== undefined || options.year !== undefined || |
| options.month !== undefined || options.day !== undefined)) |
| { |
| needDefaults = false; |
| } |
| |
| // Step 6. |
| if ((required === "time" || required === "any") && |
| (options.hour !== undefined || options.minute !== undefined || |
| options.second !== undefined)) |
| { |
| needDefaults = false; |
| } |
| |
| // Step 7. |
| if (needDefaults && (defaults === "date" || defaults === "all")) { |
| // The specification says to call [[DefineOwnProperty]] with false for |
| // the Throw parameter, while Object.defineProperty uses true. For the |
| // calls here, the difference doesn't matter because we're adding |
| // properties to a new object. |
| defineProperty(options, "year", "numeric"); |
| defineProperty(options, "month", "numeric"); |
| defineProperty(options, "day", "numeric"); |
| } |
| |
| // Step 8. |
| if (needDefaults && (defaults === "time" || defaults === "all")) { |
| // See comment for step 7. |
| defineProperty(options, "hour", "numeric"); |
| defineProperty(options, "minute", "numeric"); |
| defineProperty(options, "second", "numeric"); |
| } |
| |
| // Step 9. |
| return options; |
| } |
| |
| |
| /** |
| * Compares the date and time components requested by options with the available |
| * date and time formats in formats, and selects the best match according |
| * to a specified basic matching algorithm. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.1.1. |
| */ |
| function BasicFormatMatcher(options, formats) { |
| // Steps 1-6. |
| var removalPenalty = 120, |
| additionPenalty = 20, |
| longLessPenalty = 8, |
| longMorePenalty = 6, |
| shortLessPenalty = 6, |
| shortMorePenalty = 3; |
| |
| // Table 3. |
| var properties = ["weekday", "era", "year", "month", "day", |
| "hour", "minute", "second", "timeZoneName"]; |
| |
| // Step 11.c.vi.1. |
| var values = ["2-digit", "numeric", "narrow", "short", "long"]; |
| |
| // Steps 7-8. |
| var bestScore = -Infinity; |
| var bestFormat; |
| |
| // Steps 9-11. |
| var i = 0; |
| var len = formats.length; |
| while (i < len) { |
| // Steps 11.a-b. |
| var format = formats[i]; |
| var score = 0; |
| |
| // Step 11.c. |
| var formatProp; |
| for (var j = 0; j < properties.length; j++) { |
| var property = properties[j]; |
| |
| // Step 11.c.i. |
| var optionsProp = options[property]; |
| // Step missing from spec. |
| // https://bugs.ecmascript.org/show_bug.cgi?id=1254 |
| formatProp = undefined; |
| |
| // Steps 11.c.ii-iii. |
| if (callFunction(std_Object_hasOwnProperty, format, property)) |
| formatProp = format[property]; |
| |
| if (optionsProp === undefined && formatProp !== undefined) { |
| // Step 11.c.iv. |
| score -= additionPenalty; |
| } else if (optionsProp !== undefined && formatProp === undefined) { |
| // Step 11.c.v. |
| score -= removalPenalty; |
| } else { |
| // Step 11.c.vi. |
| var optionsPropIndex = callFunction(std_Array_indexOf, values, optionsProp); |
| var formatPropIndex = callFunction(std_Array_indexOf, values, formatProp); |
| var delta = std_Math_max(std_Math_min(formatPropIndex - optionsPropIndex, 2), -2); |
| if (delta === 2) |
| score -= longMorePenalty; |
| else if (delta === 1) |
| score -= shortMorePenalty; |
| else if (delta === -1) |
| score -= shortLessPenalty; |
| else if (delta === -2) |
| score -= longLessPenalty; |
| } |
| } |
| |
| // Step 11.d. |
| if (score > bestScore) { |
| bestScore = score; |
| bestFormat = format; |
| } |
| |
| // Step 11.e. |
| i++; |
| } |
| |
| // Step 12. |
| return bestFormat; |
| } |
| |
| |
| /** |
| * Compares the date and time components requested by options with the available |
| * date and time formats in formats, and selects the best match according |
| * to an unspecified best-fit matching algorithm. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.1.1. |
| */ |
| function BestFitFormatMatcher(options, formats) { |
| // this implementation doesn't have anything better |
| return BasicFormatMatcher(options, formats); |
| } |
| |
| |
| /** |
| * Returns the subset of the given locale list for which this locale list has a |
| * matching (possibly fallback) locale. Locales appear in the same order in the |
| * returned list as in the input list. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.2.2. |
| */ |
| function Intl_DateTimeFormat_supportedLocalesOf(locales /*, options*/) { |
| var options = arguments.length > 1 ? arguments[1] : undefined; |
| |
| var availableLocales = dateTimeFormatInternalProperties.availableLocales; |
| var requestedLocales = CanonicalizeLocaleList(locales); |
| return SupportedLocales(availableLocales, requestedLocales, options); |
| } |
| |
| |
| /** |
| * DateTimeFormat internal properties. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 9.1 and 12.2.3. |
| */ |
| var dateTimeFormatInternalProperties = { |
| localeData: dateTimeFormatLocaleData, |
| availableLocales: addOldStyleLanguageTags(intl_DateTimeFormat_availableLocales()), |
| relevantExtensionKeys: ["ca", "nu"] |
| }; |
| |
| |
| function dateTimeFormatLocaleData(locale) { |
| return { |
| ca: intl_availableCalendars(locale), |
| nu: getNumberingSystems(locale) |
| }; |
| } |
| |
| |
| /** |
| * Function to be bound and returned by Intl.DateTimeFormat.prototype.format. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.3.2. |
| */ |
| function dateTimeFormatFormatToBind() { |
| // Steps 1.a.i-ii |
| var date = arguments.length > 0 ? arguments[0] : undefined; |
| var x = (date === undefined) ? std_Date_now() : ToNumber(date); |
| |
| // Step 1.a.iii. |
| return intl_FormatDateTime(this, x); |
| } |
| |
| |
| /** |
| * Returns a function bound to this DateTimeFormat that returns a String value |
| * representing the result of calling ToNumber(date) according to the |
| * effective locale and the formatting options of this DateTimeFormat. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.3.2. |
| */ |
| function Intl_DateTimeFormat_format_get() { |
| // Check "this DateTimeFormat object" per introduction of section 12.3. |
| var internals = checkIntlAPIObject(this, "DateTimeFormat", "format"); |
| |
| // Step 1. |
| if (internals.boundFormat === undefined) { |
| // Step 1.a. |
| var F = dateTimeFormatFormatToBind; |
| |
| // Step 1.b-d. |
| var bf = callFunction(std_Function_bind, F, this); |
| internals.boundFormat = bf; |
| } |
| |
| // Step 2. |
| return internals.boundFormat; |
| } |
| |
| |
| /** |
| * Returns the resolved options for a DateTimeFormat object. |
| * |
| * Spec: ECMAScript Internationalization API Specification, 12.3.3 and 12.4. |
| */ |
| function Intl_DateTimeFormat_resolvedOptions() { |
| // Check "this DateTimeFormat object" per introduction of section 12.3. |
| var internals = checkIntlAPIObject(this, "DateTimeFormat", "resolvedOptions"); |
| |
| var result = { |
| locale: internals.locale, |
| calendar: internals.calendar, |
| numberingSystem: internals.numberingSystem, |
| timeZone: internals.timeZone |
| }; |
| resolveICUPattern(internals.pattern, result); |
| return result; |
| } |
| |
| |
| // Table mapping ICU pattern characters back to the corresponding date-time |
| // components of DateTimeFormat. See |
| // http://unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table |
| var icuPatternCharToComponent = { |
| E: "weekday", |
| G: "era", |
| y: "year", |
| M: "month", |
| L: "month", |
| d: "day", |
| h: "hour", |
| H: "hour", |
| k: "hour", |
| K: "hour", |
| m: "minute", |
| s: "second", |
| z: "timeZoneName", |
| v: "timeZoneName", |
| V: "timeZoneName" |
| }; |
| |
| |
| /** |
| * Maps an ICU pattern string to a corresponding set of date-time components |
| * and their values, and adds properties for these components to the result |
| * object, which will be returned by the resolvedOptions method. For the |
| * interpretation of ICU pattern characters, see |
| * http://unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table |
| */ |
| function resolveICUPattern(pattern, result) { |
| assert(IsObject(result), "resolveICUPattern"); |
| var i = 0; |
| while (i < pattern.length) { |
| var c = pattern[i++]; |
| if (c === "'") { |
| while (i < pattern.length && pattern[i] !== "'") |
| i++; |
| i++; |
| } else { |
| var count = 1; |
| while (i < pattern.length && pattern[i] === c) { |
| i++; |
| count++; |
| } |
| var value; |
| switch (c) { |
| // "text" cases |
| case "G": |
| case "E": |
| case "z": |
| case "v": |
| case "V": |
| if (count <= 3) |
| value = "short"; |
| else if (count === 4) |
| value = "long"; |
| else |
| value = "narrow"; |
| break; |
| // "number" cases |
| case "y": |
| case "d": |
| case "h": |
| case "H": |
| case "m": |
| case "s": |
| case "k": |
| case "K": |
| if (count === 2) |
| value = "2-digit"; |
| else |
| value = "numeric"; |
| break; |
| // "text & number" cases |
| case "M": |
| case "L": |
| if (count === 1) |
| value = "numeric"; |
| else if (count === 2) |
| value = "2-digit"; |
| else if (count === 3) |
| value = "short"; |
| else if (count === 4) |
| value = "long"; |
| else |
| value = "narrow"; |
| break; |
| default: |
| // skip other pattern characters and literal text |
| } |
| if (callFunction(std_Object_hasOwnProperty, icuPatternCharToComponent, c)) |
| defineProperty(result, icuPatternCharToComponent[c], value); |
| if (c === "h" || c === "K") |
| defineProperty(result, "hour12", true); |
| else if (c === "H" || c === "k") |
| defineProperty(result, "hour12", false); |
| } |
| } |
| } |