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Issue #2046 - Move a bunch of functions in builtin/intl/CommonFunctions.js into more-specific files, where those functions are only used in a single more-specific file
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Martok
roytam1
parent
cf2e2ed906
commit
87eaaee953
3 changed files with 141 additions and 152 deletions
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@ -4,29 +4,6 @@
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/* Portions Copyright Norbert Lindenberg 2011-2012. */
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/********** Locales, Time Zones, and Currencies **********/
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/**
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* Convert s to upper case, but limited to characters a-z.
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*
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* Spec: ECMAScript Internationalization API Specification, 6.1.
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*/
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function toASCIIUpperCase(s) {
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assert(typeof s === "string", "toASCIIUpperCase");
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// String.prototype.toUpperCase may map non-ASCII characters into ASCII,
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// so go character by character (actually code unit by code unit, but
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// since we only care about ASCII characters here, that's OK).
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var result = "";
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for (var i = 0; i < s.length; i++) {
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var c = callFunction(std_String_charCodeAt, s, i);
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result += (0x61 <= c && c <= 0x7A)
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? callFunction(std_String_fromCharCode, null, c & ~0x20)
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: s[i];
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}
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return result;
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}
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/**
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* Holder object for encapsulating regexp instances.
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@ -314,6 +291,24 @@ function IsStructurallyValidLanguageTag(locale) {
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!regexp_test_no_statics(duplicateSingletonRE, locale);
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}
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/**
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* Joins the array elements in the given range with the supplied separator.
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*/
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function ArrayJoinRange(array, separator, from, to = array.length) {
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assert(typeof separator === "string", "|separator| is a string value");
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assert(typeof from === "number", "|from| is a number value");
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assert(typeof to === "number", "|to| is a number value");
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assert(0 <= from && from <= to && to <= array.length, "|from| and |to| form a valid range");
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if (from === to)
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return "";
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var result = array[from];
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for (var i = from + 1; i < to; i++) {
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result += separator + array[i];
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}
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return result;
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}
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/**
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* Canonicalizes the given structurally valid BCP 47 language tag, including
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@ -443,25 +438,6 @@ function CanonicalizeLanguageTag(locale) {
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return canonical;
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}
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/**
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* Joins the array elements in the given range with the supplied separator.
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*/
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function ArrayJoinRange(array, separator, from, to = array.length) {
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assert(typeof separator === "string", "|separator| is a string value");
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assert(typeof from === "number", "|from| is a number value");
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assert(typeof to === "number", "|to| is a number value");
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assert(0 <= from && from <= to && to <= array.length, "|from| and |to| form a valid range");
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if (from === to)
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return "";
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var result = array[from];
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for (var i = from + 1; i < to; i++) {
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result += separator + array[i];
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}
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return result;
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}
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function localeContainsNoUnicodeExtensions(locale) {
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// No "-u-", no possible Unicode extension.
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if (callFunction(std_String_indexOf, locale, "-u-") === -1)
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@ -601,113 +577,6 @@ function DefaultLocale() {
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}
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/**
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* Verifies that the given string is a well-formed ISO 4217 currency code.
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*
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* Spec: ECMAScript Internationalization API Specification, 6.3.1.
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*/
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function getIsWellFormedCurrencyCodeRE() {
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return internalIntlRegExps.isWellFormedCurrencyCodeRE ||
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(internalIntlRegExps.isWellFormedCurrencyCodeRE = RegExpCreate("[^A-Z]"));
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}
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function IsWellFormedCurrencyCode(currency) {
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var c = ToString(currency);
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var normalized = toASCIIUpperCase(c);
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if (normalized.length !== 3)
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return false;
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return !regexp_test_no_statics(getIsWellFormedCurrencyCodeRE(), normalized);
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}
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var timeZoneCache = {
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icuDefaultTimeZone: undefined,
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defaultTimeZone: undefined,
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};
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/**
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* 6.4.2 CanonicalizeTimeZoneName ( timeZone )
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*
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* Canonicalizes the given IANA time zone name.
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*
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* ES2017 Intl draft rev 4a23f407336d382ed5e3471200c690c9b020b5f3
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*/
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function CanonicalizeTimeZoneName(timeZone) {
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assert(typeof timeZone === "string", "CanonicalizeTimeZoneName");
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// Step 1. (Not applicable, the input is already a valid IANA time zone.)
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assert(timeZone !== "Etc/Unknown", "Invalid time zone");
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assert(timeZone === intl_IsValidTimeZoneName(timeZone), "Time zone name not normalized");
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// Step 2.
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var ianaTimeZone = intl_canonicalizeTimeZone(timeZone);
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assert(ianaTimeZone !== "Etc/Unknown", "Invalid canonical time zone");
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assert(ianaTimeZone === intl_IsValidTimeZoneName(ianaTimeZone), "Unsupported canonical time zone");
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// Step 3.
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if (ianaTimeZone === "Etc/UTC" || ianaTimeZone === "Etc/GMT") {
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// ICU/CLDR canonicalizes Etc/UCT to Etc/GMT, but following IANA and
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// ECMA-402 to the letter means Etc/UCT is a separate time zone.
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if (timeZone === "Etc/UCT" || timeZone === "UCT")
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ianaTimeZone = "Etc/UCT";
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else
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ianaTimeZone = "UTC";
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}
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// Step 4.
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return ianaTimeZone;
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}
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/**
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* 6.4.3 DefaultTimeZone ()
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*
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* Returns the IANA time zone name for the host environment's current time zone.
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*
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* ES2017 Intl draft rev 4a23f407336d382ed5e3471200c690c9b020b5f3
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*/
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function DefaultTimeZone() {
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const icuDefaultTimeZone = intl_defaultTimeZone();
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if (timeZoneCache.icuDefaultTimeZone === icuDefaultTimeZone)
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return timeZoneCache.defaultTimeZone;
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// Verify that the current ICU time zone is a valid ECMA-402 time zone.
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var timeZone = intl_IsValidTimeZoneName(icuDefaultTimeZone);
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if (timeZone === null) {
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// Before defaulting to "UTC", try to represent the default time zone
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// using the Etc/GMT + offset format. This format only accepts full
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// hour offsets.
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const msPerHour = 60 * 60 * 1000;
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var offset = intl_defaultTimeZoneOffset();
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assert(offset === (offset | 0),
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"milliseconds offset shouldn't be able to exceed int32_t range");
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var offsetHours = offset / msPerHour, offsetHoursFraction = offset % msPerHour;
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if (offsetHoursFraction === 0) {
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// Etc/GMT + offset uses POSIX-style signs, i.e. a positive offset
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// means a location west of GMT.
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timeZone = "Etc/GMT" + (offsetHours < 0 ? "+" : "-") + std_Math_abs(offsetHours);
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// Check if the fallback is valid.
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timeZone = intl_IsValidTimeZoneName(timeZone);
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}
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// Fallback to "UTC" if everything else fails.
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if (timeZone === null)
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timeZone = "UTC";
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}
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// Canonicalize the ICU time zone, e.g. change Etc/UTC to UTC.
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var defaultTimeZone = CanonicalizeTimeZoneName(timeZone);
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timeZoneCache.defaultTimeZone = defaultTimeZone;
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timeZoneCache.icuDefaultTimeZone = icuDefaultTimeZone;
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return defaultTimeZone;
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}
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/********** Locale and Parameter Negotiation **********/
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/**
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* Add old-style language tags without script code for locales that in current
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* usage would include a script subtag. Also add an entry for the last-ditch
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@ -1180,9 +1049,6 @@ function GetNumberOption(options, property, minimum, maximum, fallback) {
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}
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/********** Property access for Intl objects **********/
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/**
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* Weak map used to track the initialize-as-Intl status (and, if an object has
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* been so initialized, the Intl-specific internal properties) of all objects.
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@ -128,6 +128,91 @@ var dateTimeComponentValues = {
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var dateTimeComponents = std_Object_getOwnPropertyNames(dateTimeComponentValues);
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var timeZoneCache = {
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icuDefaultTimeZone: undefined,
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defaultTimeZone: undefined,
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};
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/**
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* 6.4.2 CanonicalizeTimeZoneName ( timeZone )
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*
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* Canonicalizes the given IANA time zone name.
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*
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* ES2017 Intl draft rev 4a23f407336d382ed5e3471200c690c9b020b5f3
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*/
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function CanonicalizeTimeZoneName(timeZone) {
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assert(typeof timeZone === "string", "CanonicalizeTimeZoneName");
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// Step 1. (Not applicable, the input is already a valid IANA time zone.)
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assert(timeZone !== "Etc/Unknown", "Invalid time zone");
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assert(timeZone === intl_IsValidTimeZoneName(timeZone), "Time zone name not normalized");
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// Step 2.
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var ianaTimeZone = intl_canonicalizeTimeZone(timeZone);
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assert(ianaTimeZone !== "Etc/Unknown", "Invalid canonical time zone");
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assert(ianaTimeZone === intl_IsValidTimeZoneName(ianaTimeZone), "Unsupported canonical time zone");
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// Step 3.
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if (ianaTimeZone === "Etc/UTC" || ianaTimeZone === "Etc/GMT") {
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// ICU/CLDR canonicalizes Etc/UCT to Etc/GMT, but following IANA and
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// ECMA-402 to the letter means Etc/UCT is a separate time zone.
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if (timeZone === "Etc/UCT" || timeZone === "UCT")
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ianaTimeZone = "Etc/UCT";
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else
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ianaTimeZone = "UTC";
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}
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// Step 4.
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return ianaTimeZone;
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}
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/**
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* 6.4.3 DefaultTimeZone ()
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*
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* Returns the IANA time zone name for the host environment's current time zone.
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*
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* ES2017 Intl draft rev 4a23f407336d382ed5e3471200c690c9b020b5f3
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*/
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function DefaultTimeZone() {
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const icuDefaultTimeZone = intl_defaultTimeZone();
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if (timeZoneCache.icuDefaultTimeZone === icuDefaultTimeZone)
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return timeZoneCache.defaultTimeZone;
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// Verify that the current ICU time zone is a valid ECMA-402 time zone.
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var timeZone = intl_IsValidTimeZoneName(icuDefaultTimeZone);
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if (timeZone === null) {
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// Before defaulting to "UTC", try to represent the default time zone
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// using the Etc/GMT + offset format. This format only accepts full
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// hour offsets.
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const msPerHour = 60 * 60 * 1000;
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var offset = intl_defaultTimeZoneOffset();
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assert(offset === (offset | 0),
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"milliseconds offset shouldn't be able to exceed int32_t range");
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var offsetHours = offset / msPerHour, offsetHoursFraction = offset % msPerHour;
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if (offsetHoursFraction === 0) {
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// Etc/GMT + offset uses POSIX-style signs, i.e. a positive offset
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// means a location west of GMT.
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timeZone = "Etc/GMT" + (offsetHours < 0 ? "+" : "-") + std_Math_abs(offsetHours);
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// Check if the fallback is valid.
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timeZone = intl_IsValidTimeZoneName(timeZone);
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}
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// Fallback to "UTC" if everything else fails.
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if (timeZone === null)
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timeZone = "UTC";
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}
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// Canonicalize the ICU time zone, e.g. change Etc/UTC to UTC.
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var defaultTimeZone = CanonicalizeTimeZoneName(timeZone);
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timeZoneCache.defaultTimeZone = defaultTimeZone;
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timeZoneCache.icuDefaultTimeZone = icuDefaultTimeZone;
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return defaultTimeZone;
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}
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/**
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* Initializes an object as a DateTimeFormat.
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@ -149,6 +149,44 @@ function SetNumberFormatDigitOptions(lazyData, options, mnfdDefault) {
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}
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}
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/**
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* Convert s to upper case, but limited to characters a-z.
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*
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* Spec: ECMAScript Internationalization API Specification, 6.1.
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*/
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function toASCIIUpperCase(s) {
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assert(typeof s === "string", "toASCIIUpperCase");
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// String.prototype.toUpperCase may map non-ASCII characters into ASCII,
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// so go character by character (actually code unit by code unit, but
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// since we only care about ASCII characters here, that's OK).
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var result = "";
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for (var i = 0; i < s.length; i++) {
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var c = callFunction(std_String_charCodeAt, s, i);
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result += (0x61 <= c && c <= 0x7A)
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? callFunction(std_String_fromCharCode, null, c & ~0x20)
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: s[i];
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}
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return result;
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}
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/**
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* Verifies that the given string is a well-formed ISO 4217 currency code.
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*
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* Spec: ECMAScript Internationalization API Specification, 6.3.1.
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*/
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function getIsWellFormedCurrencyCodeRE() {
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return internalIntlRegExps.isWellFormedCurrencyCodeRE ||
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(internalIntlRegExps.isWellFormedCurrencyCodeRE = RegExpCreate("[^A-Z]"));
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}
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function IsWellFormedCurrencyCode(currency) {
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var c = ToString(currency);
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var normalized = toASCIIUpperCase(c);
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if (normalized.length !== 3)
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return false;
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return !regexp_test_no_statics(getIsWellFormedCurrencyCodeRE(), normalized);
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}
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/**
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* Initializes an object as a NumberFormat.
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