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Intl.js
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define([ "./impl/Record", "./impl/calendars", "./impl/common", "./locales!",
"requirejs-text/text!./cldr/supplemental/currencyData.json",
"requirejs-text/text!./cldr/supplemental/timeData.json",
"requirejs-text/text!./cldr/supplemental/numberingSystems.json" ],
function (Record, calendars, common, preloads,
currencyDataJson, timeDataJson, numberingSystemsJson) {
/**
* JavaScript implementation of internationalization APIs ("Intl") as defined by ECMA standard 402
* version 1.0, available for download at http://www.ecma-international.org/ecma-402/1.0/ECMA-402.pdf
*
* @constructor
*/
/*jshint maxcomplexity: 25*/
var Intl = {};
var currencyData = JSON.parse(currencyDataJson);
var timeData = JSON.parse(timeDataJson).supplemental.timeData;
var numberingSystems = JSON.parse(numberingSystemsJson).supplemental.numberingSystems;
var availableNumberingSystems = [ "latn" ];
for (var ns in numberingSystems) {
if (numberingSystems[ns]._type === "numeric" && ns !== "latn") {
availableNumberingSystems.push(ns);
}
}
/**
* InitializeNumberFormat abstract operation as defined in ECMA-402 Section 11.1.1.1
*
* @param {Object} numberFormat The object to be initialized as a NumberFormat object
* @param {*} locales The requested locale or locales for formatting
* @param {Object} options Number formatting options
* @private
*/
function _initializeNumberFormat(numberFormat, locales, options) {
if (numberFormat.hasOwnProperty("initializedIntlObject") && numberFormat.initializedIntlObject) {
throw new TypeError("NumberFormat is already initialized.");
}
numberFormat.initializedIntlObject = true;
var requestedLocales = common.CanonicalizeLocaleList(locales);
if (options === undefined) {
options = {};
} else {
options = Object(options);
}
var opt = new Record();
var matcher = common
.GetOption(options, "localeMatcher", "string", [ "lookup", "best fit" ], "best fit");
opt.set("localeMatcher", matcher);
var r = common.ResolveLocale(NumberFormat.availableLocales, requestedLocales, opt,
NumberFormat.relevantExtensionKeys, NumberFormat.localeData);
numberFormat.locale = r.locale;
numberFormat.dataLocale = r.dataLocale;
numberFormat.numberingSystem = r.nu;
var s = common.GetOption(options, "style", "string", [ "decimal", "percent", "currency" ], "decimal");
numberFormat.style = s;
var c = common.GetOption(options, "currency", "string");
if (c !== undefined && !common.IsWellFormedCurrencyCode(c)) {
throw new RangeError("Invalid currency code " + c);
}
if (s === "currency" && c === undefined) {
throw new TypeError("No currency code specified.");
}
var cDigits = 2;
if (s === "currency") {
c = common._toUpperCaseIdentifier(c);
numberFormat.currency = c;
numberFormat.currencySymbol = c;
numberFormat.currencyDisplayName = c;
if (currencyData.supplemental.currencyData.fractions[c]) {
cDigits = currencyData.supplemental.currencyData.fractions[c]._digits;
}
}
var cd = common.GetOption(options, "currencyDisplay", "string", [ "code", "symbol", "name" ], "symbol");
if (s === "currency") {
numberFormat.currencyDisplay = cd;
if (cd === "symbol" || cd === "name") {
var curr = preloads[r.dataLocale].currencies.main[r.dataLocale].numbers.currencies;
if (curr[numberFormat.currency]) {
numberFormat.currencySymbol = curr[numberFormat.currency].symbol;
numberFormat.currencyDisplayName = curr[numberFormat.currency].displayName;
}
}
}
var mnid = common.GetNumberOption(options, "minimumIntegerDigits", 1, 21, 1);
numberFormat.minimumIntegerDigits = mnid;
var mnfdDefault;
if (s === "currency") {
mnfdDefault = cDigits;
} else {
mnfdDefault = 0;
}
var mnfd = common.GetNumberOption(options, "minimumFractionDigits", 0, 20, mnfdDefault);
numberFormat.minimumFractionDigits = mnfd;
var mxfdDefault;
if (s === "currency") {
mxfdDefault = Math.max(mnfd, cDigits);
} else if (s === "percent") {
mxfdDefault = Math.max(mnfd, 0);
} else {
mxfdDefault = Math.max(mnfd, 3);
}
var mxfd = common.GetNumberOption(options, "maximumFractionDigits", mnfd, 20, mxfdDefault);
numberFormat.maximumFractionDigits = mxfd;
var mnsd = options.minimumSignificantDigits;
var mxsd = options.maximumSignificantDigits;
if (mnsd !== undefined || mxsd !== undefined) {
mnsd = common.GetNumberOption(options, "minimumSignificantDigits", 1, 21, 1);
mxsd = common.GetNumberOption(options, "maximumSignificantDigits", mnsd, 21, 1);
numberFormat.minimumSignificantDigits = mnsd;
numberFormat.maximumSignificantDigits = mxsd;
}
var g = common.GetOption(options, "useGrouping", "boolean", undefined, true);
numberFormat.useGrouping = g;
var numb = preloads[r.dataLocale].numbers.main[r.dataLocale].numbers;
if (r.locale === r.dataLocale) {
numberFormat.numberingSystem = numb.defaultNumberingSystem;
}
var numberInfo = _getNumberInfo(numb, numberFormat.numberingSystem);
var stylePatterns = numberInfo.patterns[s];
numberFormat.positivePattern = stylePatterns.positivePattern;
numberFormat.negativePattern = stylePatterns.negativePattern;
/*
* The CLDR number format pattern is necessary in order to do localized grouping properly, for example
* #,##,##0.00 grouping in India.
*/
numberFormat.cldrPattern = stylePatterns.cldrPattern;
numberFormat.symbols = numberInfo.symbols;
numberFormat.boundFormat = undefined;
numberFormat.initializedNumberFormat = true;
}
/**
* Utility function to insert grouping separators into the proper locations in a string of digits based on
* the CLDR pattern string.
*
* @param {String} n The string representing the number to be formatted
* @param {String} pattern The number formatting pattern (from CLDR)
* @returns {String} The formatted string
* @private
*/
function doGrouping(n, pattern) {
var numExp = /[0-9#.,]+/;
var number = numExp.exec(pattern)[0];
var dPos = number.lastIndexOf(".");
if (dPos !== -1) {
number = number.substring(0, dPos);
}
var groupings = number.split(",");
groupings.reverse();
groupings.pop();
var currentGrouping = groupings.shift();
var ungroupedDigits = /^\d+/.exec(n);
while (ungroupedDigits && ungroupedDigits[0].length > currentGrouping.length) {
var digitsLeft = ungroupedDigits[0].length - currentGrouping.length;
n = n.substr(0, digitsLeft) + "," + n.substring(digitsLeft);
if (groupings.length > 0) {
currentGrouping = groupings.shift();
}
ungroupedDigits = /^\d+/.exec(n);
}
return n;
}
/**
* Utility function to convert a string in scientific notation to a corresponding string of digits
*
* @param {String} x The string to be converted
* @returns {String} The corresponding string of digits
* @private
*/
function _toDigitString(x) {
var m = x;
var negative = false;
if (m.charAt(0) === "-") {
negative = true;
m = m.substring(1);
}
var parts = m.split("e");
var mantissa = parts[0];
var exponent = Number(parts[1]);
if (exponent > 0) {
m = mantissa.substr(0, 1) + mantissa.substr(2); // Get just the digits
if (m.length - 1 < exponent) { // Need to add zeroes.
var e = exponent + 1 - m.length;
while (e > 0) {
m = m + "0";
e--;
}
} else if (m.length - 1 > exponent) {
m = m.substr(0, exponent + 1) + "." + m.substr(exponent + 1);
}
} else if (exponent < 0) {
var digits = mantissa.substr(0, 1) + mantissa.substr(2); // Get just the digits
m = "0.";
for (var i = exponent; i < -1; i++) {
m += "0";
}
m += digits;
}
if (negative) {
m = "-" + m;
}
return m;
}
/**
* ToRawPrecision abstract operation as defined in ECMA-402 Section 11.3.2
*
* @param {Number} x The number being formatted
* @param {Number} minPrecision The minimum precision
* @param {Number} maxPrecision The maximum precision
* @returns {String} The string representing the formatted number
* @private
*/
function _toRawPrecision(x, minPrecision, maxPrecision) {
var p = maxPrecision;
var e;
var m = "";
var target;
if (x === 0) {
for (var i = 0; i < p; i++) {
m += "0";
}
e = 0;
} else {
target = Math.pow(10, p - 1);
if (x < target) {
e = p - 1;
while (x < target) {
target /= 10;
e--;
}
} else {
target = Math.pow(10, p);
e = p - 1;
while (x >= target) {
target *= 10;
e++;
}
}
m = x.toString();
if (/e/.test(m)) {
m = _toDigitString(m);
}
if (!/\./.test(m)) {
m += ".";
}
for (i = 0; i < p; i++) {
m += "0";
}
var placesToMove = p - 1 - e;
var mi = m.indexOf(".");
if (placesToMove > 0) {
m = m.substr(0, mi) + m.substr(mi + 1, placesToMove) + "." + m.substr(mi + 1 + placesToMove, 1);
}
if (placesToMove < 0) {
m = m.substr(0, p) + "." + m.substr(p, 1);
}
m = Math.round(m).toString();
}
if (e >= p) {
for (i = 0; i < e - p + 1; i++) {
m += "0";
}
return m;
}
if (e === p - 1) {
return m;
}
if (e >= 0) {
m = m.substr(0, e + 1) + "." + m.substr(e + 1, p - (e + 1));
} else {
var prefix = "0.";
for (i = 0; i < -(e + 1); i++) {
prefix += "0";
}
m = prefix + m;
}
if (/\./.test(m) && maxPrecision > minPrecision) {
var cut = maxPrecision - minPrecision;
while (cut > 0 && /0$/.test(m)) {
m = m.substr(0, m.length - 1);
cut--;
}
if (/\.$/.test(m)) {
m = m.substr(0, m.length - 1);
}
}
return m;
}
/**
* ToRawFixed abstract operation as defined in ECMA-402 Section 11.3.2
*
* @param {Number} x The number being formatted
* @param {Number} minInteger The minimum number of integer digits
* @param {Number} minFraction The minimum number of fractional digits
* @param {Number} maxFraction The maximum number of fractional digits
* @returns {String} The string representing the formatted number
* @private
*/
function _toRawFixed(x, minInteger, minFraction, maxFraction) {
var m;
/*
* if x < 10^21, then we can use the standard built in function. Otherwise, Number.toFixed() is going to
* give us back a value in scientific notation, and we have to convert it back to a series of digits.
*/
if (Math.abs(x) < Math.pow(10, 21)) {
m = x.toFixed(maxFraction).toString();
} else {
m = _toDigitString(x.toString());
if (maxFraction > 0) {
m += ".";
for (var i = 0; i < maxFraction; i++) {
m += "0";
}
}
}
var cut = maxFraction - minFraction;
while (cut > 0 && /0$/.test(m)) {
m = m.replace(/0$/, "");
cut--;
}
if (/\.$/.test(m)) {
m = m.replace(/\.$/, "");
}
var dPos = m.indexOf(".");
var int = dPos > 0 ? dPos : m.length;
while (int < minInteger) {
m = "0" + m;
int++;
}
return m;
}
/**
* FormatNumber abstract operation as defined in ECMA-402 Section 11.3.2
*
* @param {Object} numberFormat The number format object to use for formatting
* @param {Number} x The number being formatted
* @returns {String} The string representing the formatted number
* @private
*/
function _formatNumber(numberFormat, x) {
var negative = (x < 0);
var n;
if (!isFinite(x)) {
if (isNaN(x)) {
n = numberFormat.symbols.nan;
} else {
n = numberFormat.symbols.infinity;
}
} else {
if (negative) {
x = -x;
}
if (numberFormat.style === "percent") {
x *= 100;
}
if (numberFormat.minimumSignificantDigits !== undefined
&& numberFormat.maximumSignificantDigits !== undefined) {
n = _toRawPrecision(x, numberFormat.minimumSignificantDigits,
numberFormat.maximumSignificantDigits);
} else {
n = _toRawFixed(x, numberFormat.minimumIntegerDigits, numberFormat.minimumFractionDigits,
numberFormat.maximumFractionDigits);
}
if (numberFormat.useGrouping) {
n = doGrouping(n, numberFormat.cldrPattern);
}
if (numberFormat.numberingSystem !== undefined && numberFormat.numberingSystem !== "latn") {
var alldigits = /\d/g;
n = n.replace(alldigits, function (m) {
return numberingSystems[numberFormat.numberingSystem]._digits.charAt(m);
});
}
n = n.replace(/[.,]/g, function (m) {
if (m === ".") {
return numberFormat.symbols.decimal ? numberFormat.symbols.decimal : m;
}
return numberFormat.symbols.group ? numberFormat.symbols.group : m;
});
}
var result = numberFormat.positivePattern;
if (negative) {
result = numberFormat.negativePattern;
}
if (result) {
result = result.replace("-", numberFormat.symbols.minusSign);
result = result.replace("%", numberFormat.symbols.percentSign);
result = result.replace("{number}", n);
if (numberFormat.style === "currency") {
var currency = numberFormat.currency;
var cd = currency;
if (numberFormat.currencyDisplay === "symbol") {
cd = numberFormat.currencySymbol;
} else if (numberFormat.currencyDisplay === "name") {
cd = numberFormat.currencyDisplayName;
}
result = result.replace("{currency}", cd);
}
}
return result;
}
/**
* Utility function to retrive necessary number fields from the CLDR data
*
* @param {Object} numbers The JSON object containing numbers data from CLDR
* @param {String} numberingSystem The numbering system being used
* @returns {Object} An object containing the number symbols and formatting patterns
* @private
*/
function _getNumberInfo(numbers, numberingSystem) {
var result = {};
result.symbols = {};
var numberExp = /[0-9#.,]+/;
var key = "symbols-numberSystem-" + numberingSystem;
var altkey = "symbols-numberSystem-latn";
var cldrSymbols = numbers[key] ? numbers[key] : numbers[altkey];
result.symbols = cldrSymbols;
result.patterns = {};
var styles = [ "decimal", "percent", "currency" ];
for (var s in styles) {
var style = styles[s];
key = style + "Formats-numberSystem-" + numberingSystem;
altkey = style + "Formats-numberSystem-latn";
var cldrPattern = numbers[key] ? numbers[key].standard : numbers[altkey].standard;
var patterns = cldrPattern.split(";");
var positivePattern, negativePattern;
positivePattern = patterns[0];
if (patterns[length] === 2) {
negativePattern = patterns[1];
} else {
negativePattern = "-" + positivePattern;
}
positivePattern = positivePattern.replace(numberExp, "{number}").replace(/\u00A4/, "{currency}");
negativePattern = negativePattern.replace(numberExp, "{number}").replace(/\u00A4/, "{currency}");
result.patterns[style] = {
"cldrPattern" : cldrPattern,
"positivePattern" : positivePattern,
"negativePattern" : negativePattern
};
}
return result;
}
/**
* ToDateTimeOptions abstract operation as defined in ECMA-402 Section 12.1.1.1
*
* @param {Object} options The number format object to use for formatting
* @param {String} required String indicating which options are required
* @param {String} defaults String indicating which options can use defaults
* @returns {Object} The corresponding date/time options
* @private
*/
function _toDateTimeOptions(options, required, defaults) {
if (options === undefined) {
options = null;
} else {
options = Object(options);
}
options = Object.create(options);
var weekdayFields = [ "weekday", "year", "month", "day" ];
var dateFields = [ "year", "month", "day" ];
var timeFields = [ "hour", "minute", "second" ];
var needDefaults = true;
if (required === "date" || required === "any") {
weekdayFields.forEach(function (field) {
if (options[field] !== undefined) {
needDefaults = false;
}
});
}
if (required === "time" || required === "any") {
timeFields.forEach(function (field) {
if (options[field] !== undefined) {
needDefaults = false;
}
});
}
if (needDefaults && (defaults === "date" || defaults === "all")) {
dateFields.forEach(function (field) {
Object.defineProperty(options, field, {
value : "numeric",
writable : true,
configurable : true,
enumerable : true
});
});
}
if (needDefaults && (defaults === "time" || defaults === "all")) {
timeFields.forEach(function (field) {
Object.defineProperty(options, field, {
value : "numeric",
writable : true,
configurable : true,
enumerable : true
});
});
}
return options;
}
/**
* BasicFormatMatcher abstract operation as defined in ECMA-402 Section 12.1.1.1
*
* @param {Object} options The requested options (i.e. fields) to be included in the date/time format
* @param {Object []} formats An array of the available date/time formats
* @returns {Object} The date/time format that best matches the requested options
* @private
*/
function _basicFormatMatcher(options, formats) {
var removalPenalty = 120;
var additionPenalty = 20;
var longLessPenalty = 8;
var longMorePenalty = 6;
var shortLessPenalty = 6;
var shortMorePenalty = 3;
var bestScore = Number.NEGATIVE_INFINITY;
var bestFormat;
var i = 0;
var len = formats.length;
while (i < len) {
var format = formats[i.toString()];
var score = 0;
var dateTimeProperties = [ "weekday", "era", "year", "month", "day", "hour", "minute", "second",
"timeZoneName" ];
dateTimeProperties.forEach(function (property) {
var optionsProp = options[property];
var formatProp;
var formatPropDesc = Object.getOwnPropertyDescriptor(format, property);
if (formatPropDesc !== undefined) {
formatProp = format[property];
}
if (optionsProp === undefined && formatProp !== undefined) {
score -= additionPenalty;
} else if (optionsProp !== undefined && formatProp === undefined) {
score -= removalPenalty;
} else {
var values = [ "2-digit", "numeric", "narrow", "short", "long" ];
var optionsPropIndex = values.indexOf(optionsProp);
var formatPropIndex = values.indexOf(formatProp);
var delta = Math.max(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;
}
}
});
if (score > bestScore) {
bestScore = score;
bestFormat = format;
}
i++;
}
return bestFormat;
}
/**
* BestFitFormat abstract operation as defined in ECMA-402 Section 12.1.1.1
* ECMA-402 allows this algorithm to be implementation defined. For now we are using
* the same algorithm as for BasicFormatMatcher.
*
* @param {Object} options The requested options (i.e. fields) to be included in the date/time format
* @param {Object []} formats An array of the available date/time formats
* @returns {Object} The date/time format that best matches the requested options
* @private
*/
function _bestFitFormatMatcher(options, formats) {
return _basicFormatMatcher(options, formats);
}
/**
* InitializeDateTimeFormat abstract operation as defined in ECMA-402 Section 12.1.1.1
*
* @param {Object} dateTimeFormat The object to be initialized as a DateTimeFormat object
* @param {*} locales The requested locale or locales for formatting
* @param {Object} options Date/time formatting options
* @private
*/
function _initializeDateTimeFormat(dateTimeFormat, locales, options) {
var dateTimeProperties = [ "weekday", "era", "year", "month", "day", "hour", "minute", "second",
"timeZoneName" ];
if (dateTimeFormat.hasOwnProperty("initializedIntlObject") && dateTimeFormat.initializedIntlObject) {
throw new TypeError("DateTimeFormat is already initialized.");
}
dateTimeFormat.initializedIntlObject = true;
var requestedLocales = common.CanonicalizeLocaleList(locales);
options = _toDateTimeOptions(options, "any", "date");
var opt = new Record();
var matcher = common
.GetOption(options, "localeMatcher", "string", [ "lookup", "best fit" ], "best fit");
opt.set("localeMatcher", matcher);
var r = common.ResolveLocale(DateTimeFormat.availableLocales, requestedLocales, opt,
DateTimeFormat.relevantExtensionKeys, DateTimeFormat.localeData);
dateTimeFormat.locale = r.locale;
dateTimeFormat.numberingSystem = r.nu;
dateTimeFormat.calendar = r.ca;
dateTimeFormat.dataLocale = r.dataLocale;
var tz = options.timeZone;
if (tz !== undefined) {
tz = tz.toString();
tz = common._toUpperCaseIdentifier(tz);
if (tz !== "UTC") {
throw new RangeError("Timezones other than UTC are not supported");
}
}
dateTimeFormat.timeZone = tz;
opt = new Record();
dateTimeProperties.forEach(function (prop) {
var value = common
.GetOption(options, prop, "string", _validDateTimePropertyValues(prop), undefined);
opt.set(prop, value);
});
/*
* Steps 20-21: Here we deviate slightly from the strict definition as defined in ECMA 402. Instead of
* having all the formats predefined (i.e. hard-coded) in the locale data object up front, and accessing
* them here, we instead wait until we know which locale we are interested in, and load the formats from
* the JSON data. This saves us having to convert CLDR date formats to ECMA 402's format for a bunch of
* locales that we aren't really using.
*/
var cldrCalendar = dateTimeFormat.calendar.replace("gregory", "gregorian");
dateTimeFormat.calData =
preloads[r.dataLocale]["ca-" + cldrCalendar].main[r.dataLocale].dates.calendars[cldrCalendar];
var formats = _convertAvailableDateTimeFormats(dateTimeFormat.calData.dateTimeFormats);
matcher = common.GetOption(options, "formatMatcher", "string", [ "basic", "best fit" ], "best fit");
var bestFormat = matcher === "basic" ? _basicFormatMatcher(opt, formats) : _bestFitFormatMatcher(opt,
formats);
dateTimeProperties.forEach(function (prop) {
var pDesc = Object.getOwnPropertyDescriptor(bestFormat, prop);
if (pDesc !== undefined) {
dateTimeFormat[prop] = bestFormat[prop];
}
});
var pattern;
var hr12 = common.GetOption(options, "hour12", "boolean", undefined, undefined);
if (dateTimeFormat.hour !== undefined) {
if (hr12 === undefined) {
hr12 = DateTimeFormat.localeData[dateTimeFormat.dataLocale]
&& DateTimeFormat.localeData[dateTimeFormat.dataLocale].hour12;
}
dateTimeFormat.hour12 = hr12;
if (hr12) {
var hourNo0 = DateTimeFormat.localeData[dateTimeFormat.dataLocale]
&& DateTimeFormat.localeData[dateTimeFormat.dataLocale].hourNo0;
dateTimeFormat.hourNo0 = hourNo0;
dateTimeFormat.hour = bestFormat.hour12;
pattern = bestFormat.pattern12;
} else {
pattern = bestFormat.pattern;
}
} else {
pattern = bestFormat.pattern;
}
dateTimeFormat.pattern = pattern;
dateTimeFormat.boundFormat = undefined;
dateTimeFormat.initializedDateTimeFormat = true;
}
/**
* FormatDateTime abstract operation as defined in ECMA-402 Section 12.3.2
*
* @param {Object} dateTimeFormat The date/time format object to use for formatting
* @param {Number} x The value of the date being formatted, as would be received from
* the getTime() method of the Date object
* @returns {String} The string representing the formatted number
* @private
*/
function _formatDateTime(dateTimeFormat, x) {
var dateTimeProperties = [ "weekday", "era", "year", "month", "day", "hour", "minute", "second",
"timeZoneName" ];
if (!isFinite(x)) {
throw new RangeError("Attempting to format an invalid date/time.");
}
var locale = dateTimeFormat.locale;
var nf = {};
_initializeNumberFormat(nf, locale, {
useGrouping : false
});
var nf2 = {};
_initializeNumberFormat(nf2, locale, {
minimumIntegerDigits : 2,
useGrouping : false
});
var tm = calendars.toLocalTime(x, dateTimeFormat.calendar, dateTimeFormat.timeZone);
var pm = false;
var result = dateTimeFormat.pattern;
dateTimeProperties.forEach(function (prop) {
var p = prop;
var f = dateTimeFormat[p];
var v = tm[p];
var fv;
if (p === "month") {
v++;
}
if (p === "hour" && dateTimeFormat.hour12) {
v = v % 12;
pm = (v !== tm[p]);
if (v === 0 && dateTimeFormat.hourNo0) {
v = 12;
}
}
if (f === "numeric") {
fv = _formatNumber(nf, v);
} else if (f === "2-digit") {
fv = _formatNumber(nf2, v);
if (fv.length > 2) {
fv = fv.substr(-2);
}
} else {
var standalone = (p === "month" && dateTimeFormat.standaloneMonth);
fv = _getCalendarField(dateTimeFormat.calendar, dateTimeFormat.calData, tm.year, standalone, p,
f, v);
}
if (result) {
result = result.replace("{" + p + "}", fv);
}
});
if (dateTimeFormat.hour12) {
var ampm = pm ? "pm" : "am";
var fv = _getCalendarField(dateTimeFormat.calendar, dateTimeFormat.calData, tm.year, false,
"dayperiod", "short", ampm);
if (result) {
result = result.replace("{ampm}", fv);
}
}
return result;
}
/**
* Utility function to retrive necessary date/time fields from the CLDR data
*
* @param {String} calType The type of calendar in use (i.e. "hebrew", "japanese", etc. )
* @param {Object} calData The JSON object containing calendar data from CLDR
* @param {Number} year The year number
* @param {Boolean} standalone TRUE indicates a stand-alone month name,
* which is spelled differently in some languages.
* @param {String} property The type of field being requested (i.e. "weekday", "month", etc.)
* @param {String} format The length of the field being requested (i.e. "narrow", "short", "long")
* @param {Number} value Indicates which month, day, etc. is being requested (zero based)
* @returns {String} A string containing the requested calendar field
* @private
*/
function _getCalendarField(calType, calData, year, standalone, property, format, value) {
var result = null;
switch (property) {
case "weekday":
var cldrWeekdayKeys = [ "sun", "mon", "tue", "wed", "thu", "fri", "sat" ];
var weekdayKey = cldrWeekdayKeys[value];
switch (format) {
case "narrow":
result = calData.days.format.narrow[weekdayKey];
break;
case "short":
result = calData.days.format.abbreviated[weekdayKey];
break;
case "long":
result = calData.days.format.wide[weekdayKey];
break;
}
break;
case "era":
switch (format) {
case "narrow":
result = calData.eras.eraNarrow[value];
break;
case "short":
result = calData.eras.eraAbbr[value];
break;
case "long":
result = calData.eras.eraNames[value];
break;
}
break;
case "month":
var monthValue = value;
/*
* Because of leap month in the Hebrew calendar, there isn't a 1-1 correlation between
* month number and the resource name in CLDR, so we have to adjust accordingly.
*/
if (calType === "hebrew") {
monthValue = calendars.hebrewMonthResource(year, value);
}
switch (format) {
case "narrow":
result = standalone ? calData.months["stand-alone"].narrow[monthValue]
: calData.months.format.narrow[monthValue];
break;
case "short":
result = standalone ? calData.months["stand-alone"].abbreviated[monthValue]
: calData.months.format.abbreviated[monthValue];
break;
case "long":
result = standalone ? calData.months["stand-alone"].wide[monthValue]
: calData.months.format.wide[monthValue];
break;
}
break;
case "dayperiod":
switch (format) {
case "narrow":
result = calData.dayPeriods.format.narrow[value];
break;
case "short":
result = calData.dayPeriods.format.abbreviated[value];
break;
case "long":
result = calData.dayPeriods.format.wide[value];
break;
}
break;
case "timeZoneName":
if (value === "UTC") {
result = "UTC";
}
result = "local";
break;
}
return result;
}
/**
* Utility function to convert the availableFormats from a CLDR JSON object into an array of available
* formats as defined by ECMA 402. For definition of fields, in CLDR, refer to
* http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table
*
* @param {String} format The date/time format pattern as from CLDR
* @returns {String} A string containing the corresponding date/time pattern in ECMA-402 format
* @private
*/
function _ToIntlDateTimeFormat(format) {
var dateFields = /G{1,5}|y{1,4}|[ML]{1,5}|E{1,5}|d{1,2}|a|[Hh]{1,2}|m{1,2}|s{1,2}/g;
var result = new Record();
var pieces = format.split("'");
for (var x = 0; x < pieces.length; x += 2) { // Don't do replacements for fields that are quoted
/*jshint maxcomplexity: 36*/
pieces[x] = pieces[x].replace(dateFields, function (field) {
switch (field) {
case "GGGGG":
result.set("era", "narrow");
return "{era}";
case "GGGG":
result.set("era", "long");
return "{era}";
case "GGG":
case "GG":
case "G":
result.set("era", "short");
return "{era}";
case "yy":
result.set("year", "2-digit");
return "{year}";
case "y":
case "yyy":
case "yyyy":
result.set("year", "numeric");
return "{year}";
case "LLLLL":
result.set("standaloneMonth", true);
result.set("month", "narrow");
return "{month}";
case "MMMMM":
result.set("month", "narrow");
return "{month}";
case "LLLL":
result.set("standaloneMonth", true);
result.set("month", "long");
return "{month}";
case "MMMM":
result.set("month", "long");
return "{month}";
case "LLL":
result.set("standaloneMonth", true);
result.set("month", "short");
return "{month}";
case "MMM":
result.set("month", "short");
return "{month}";
case "LL":
case "MM":
result.set("month", "2-digit");
return "{month}";
case "L":
case "M":
result.set("month", "numeric");
return "{month}";
case "EEEEE":
result.set("weekday", "narrow");
return "{weekday}";
case "EEEE":
result.set("weekday", "long");
return "{weekday}";
case "EEE":
case "EE":
case "E":
result.set("weekday", "short");
return "{weekday}";
case "dd":
result.set("day", "2-digit");
return "{day}";
case "d":
result.set("day", "numeric");
return "{day}";
case "a":
return "{ampm}";
case "hh":
result.set("hour12", "2-digit");
result.set("hour", "2-digit");
return "{hour}";
case "HH":
result.set("hour", "2-digit");
return "{hour}";
case "h":
result.set("hour12", "numeric");
result.set("hour", "numeric");
return "{hour}";
case "H":
result.set("hour", "numeric");
return "{hour}";
case "mm":
result.set("minute", "2-digit");
return "{minute}";
case "m":
result.set("minute", "numeric");
return "{minute}";
case "ss":
result.set("second", "2-digit");
return "{second}";
case "s":
result.set("second", "numeric");
return "{second}";
default:
return field;
}
});
/*jshint maxcomplexity: 10*/
}
result.set("pattern", pieces.join(""));
return result;
}
/**
* Utility function to convert the availableFormats from a CLDR JSON
* object into an array of available formats as defined by ECMA 402. For
* a definition of fields in CLDR, refer to
* http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table
*
* @param {Object} dateTimeFormats The CLDR JSON object containing date/time information
* @returns {String[]} A array of strings, each corrresponding to one of the date/time
* patterns (in ECMA-402 format) that can be used to format dates or times
* @private
*/
function _convertAvailableDateTimeFormats(dateTimeFormats) {
var availableFormats = dateTimeFormats.availableFormats;
var result = [];
var usableFormatSkeletons = /^G{0,5}y{0,4}M{0,5}E{0,5}d{0,2}H{0,2}m{0,2}s{0,2}$/;
var abbrMonthSkeleton = /(^|[^M])M{3}([^M]|$)/;
for (var format in availableFormats) {
var format12 = availableFormats[format.replace("H", "h")];
if (usableFormatSkeletons.test(format) && format12 !== undefined) {
var outputFormat = _ToIntlDateTimeFormat(availableFormats[format]);
if (/H/.test(format)) {
var outputFormat12 = _ToIntlDateTimeFormat(format12);
outputFormat.set("hour12", outputFormat12.hour12);
outputFormat.set("pattern12", outputFormat12.pattern);
}
result.push(outputFormat);
// Flexible date format logic - If the locale contains just a MMM pattern (abbreviated month)
// and not a corresponding MMMM pattern (long month), then we can infer
// an appropriate MMMM pattern by just replacing the MMM with MMMM.
if (abbrMonthSkeleton.test(format) && !availableFormats[format.replace("MMM", "MMMM")]) {
var constructedFormatPattern = availableFormats[format]
.replace("MMM", "MMMM").replace("LLL", "LLLL");
var constructedFormat = _ToIntlDateTimeFormat(constructedFormatPattern);
result.push(constructedFormat);
}
}
}
// ECMA402 requires us to have a full date format that includes
// weekday, year, month
// day, hour, minute, and second. Since CLDR doesn't
// specifically have that combination,
// we have to piece it together using three pieces:
// a). The yMMMMEd or yMMMEd format from available formats
// b). The "full" date/time format combiner.
// c). The Hms format in locales using 24-hour clock, or the hms
// format in locales using a 12-hour clock.
var combinedDateFormat = dateTimeFormats.full || "{1} {0}";
combinedDateFormat = combinedDateFormat.replace("{1}",
availableFormats.yMMMMEd || availableFormats.yMMMEd ||
availableFormats.yyyyMMMMEd || availableFormats.yyyyMMMEd ||
availableFormats.GyMMMMEd || availableFormats.GyMMMEd);
var combinedDateTimeFormat24 = combinedDateFormat.replace("{0}", availableFormats.Hms);
var combinedDateTimeFormat12 = combinedDateFormat.replace("{0}", availableFormats.hms);
outputFormat = _ToIntlDateTimeFormat(combinedDateTimeFormat24);
outputFormat12 = _ToIntlDateTimeFormat(combinedDateTimeFormat12);
outputFormat.set("hour12", outputFormat12.hour12);
outputFormat.set("pattern12", outputFormat12.pattern);