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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | |
| 2 // Redistribution and use in source and binary forms, with or without | |
| 3 // modification, are permitted provided that the following conditions are | |
| 4 // met: | |
| 5 // | |
| 6 // * Redistributions of source code must retain the above copyright | |
| 7 // notice, this list of conditions and the following disclaimer. | |
| 8 // * Redistributions in binary form must reproduce the above | |
| 9 // copyright notice, this list of conditions and the following | |
| 10 // disclaimer in the documentation and/or other materials provided | |
| 11 // with the distribution. | |
| 12 // * Neither the name of Google Inc. nor the names of its | |
| 13 // contributors may be used to endorse or promote products derived | |
| 14 // from this software without specific prior written permission. | |
| 15 // | |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 // limitations under the License. | |
| 28 | |
| 29 // ECMAScript 402 API implementation is broken into separate files for | |
| 30 // each service. The build system combines them together into one | |
| 31 // Intl namespace. | |
| 32 | |
| 33 /** | |
| 34 * Returns a string that matches LDML representation of the options object. | |
| 35 */ | |
| 36 function toLDMLString(options) { | |
| 37 var getOption = getGetOption(options, 'dateformat'); | |
| 38 | |
| 39 var ldmlString = ''; | |
| 40 | |
| 41 var option = getOption('weekday', 'string', ['narrow', 'short', 'long']); | |
| 42 ldmlString += appendToLDMLString( | |
| 43 option, {narrow: 'EEEEE', short: 'EEE', long: 'EEEE'}); | |
| 44 | |
| 45 option = getOption('era', 'string', ['narrow', 'short', 'long']); | |
| 46 ldmlString += appendToLDMLString( | |
| 47 option, {narrow: 'GGGGG', short: 'GGG', long: 'GGGG'}); | |
| 48 | |
| 49 option = getOption('year', 'string', ['2-digit', 'numeric']); | |
| 50 ldmlString += appendToLDMLString(option, {'2-digit': 'yy', 'numeric': 'y'}); | |
| 51 | |
| 52 option = getOption('month', 'string', | |
| 53 ['2-digit', 'numeric', 'narrow', 'short', 'long']); | |
| 54 ldmlString += appendToLDMLString(option, {'2-digit': 'MM', 'numeric': 'M', | |
| 55 'narrow': 'MMMMM', 'short': 'MMM', 'long': 'MMMM'}); | |
| 56 | |
| 57 option = getOption('day', 'string', ['2-digit', 'numeric']); | |
| 58 ldmlString += appendToLDMLString( | |
| 59 option, {'2-digit': 'dd', 'numeric': 'd'}); | |
| 60 | |
| 61 var hr12 = getOption('hour12', 'boolean'); | |
| 62 option = getOption('hour', 'string', ['2-digit', 'numeric']); | |
| 63 if (hr12 === undefined) { | |
| 64 ldmlString += appendToLDMLString(option, {'2-digit': 'jj', 'numeric': 'j'}); | |
| 65 } else if (hr12 === true) { | |
| 66 ldmlString += appendToLDMLString(option, {'2-digit': 'hh', 'numeric': 'h'}); | |
| 67 } else { | |
| 68 ldmlString += appendToLDMLString(option, {'2-digit': 'HH', 'numeric': 'H'}); | |
| 69 } | |
| 70 | |
| 71 option = getOption('minute', 'string', ['2-digit', 'numeric']); | |
| 72 ldmlString += appendToLDMLString(option, {'2-digit': 'mm', 'numeric': 'm'}); | |
| 73 | |
| 74 option = getOption('second', 'string', ['2-digit', 'numeric']); | |
| 75 ldmlString += appendToLDMLString(option, {'2-digit': 'ss', 'numeric': 's'}); | |
| 76 | |
| 77 option = getOption('timeZoneName', 'string', ['short', 'long']); | |
| 78 ldmlString += appendToLDMLString(option, {short: 'v', long: 'vv'}); | |
| 79 | |
| 80 return ldmlString; | |
| 81 } | |
| 82 | |
| 83 | |
| 84 /** | |
| 85 * Returns either LDML equivalent of the current option or empty string. | |
| 86 */ | |
| 87 function appendToLDMLString(option, pairs) { | |
| 88 if (option !== undefined) { | |
| 89 return pairs[option]; | |
| 90 } else { | |
| 91 return ''; | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 | |
| 96 /** | |
| 97 * Returns object that matches LDML representation of the date. | |
| 98 */ | |
| 99 function fromLDMLString(ldmlString) { | |
| 100 // First remove '' quoted text, so we lose 'Uhr' strings. | |
| 101 ldmlString = ldmlString.replace(QUOTED_STRING_RE, ''); | |
| 102 | |
| 103 var options = {}; | |
| 104 var match = ldmlString.match(/E{3,5}/g); | |
| 105 options = appendToDateTimeObject( | |
| 106 options, 'weekday', match, {EEEEE: 'narrow', EEE: 'short', EEEE: 'long'}); | |
| 107 | |
| 108 match = ldmlString.match(/G{3,5}/g); | |
| 109 options = appendToDateTimeObject( | |
| 110 options, 'era', match, {GGGGG: 'narrow', GGG: 'short', GGGG: 'long'}); | |
| 111 | |
| 112 match = ldmlString.match(/y{1,2}/g); | |
| 113 options = appendToDateTimeObject( | |
| 114 options, 'year', match, {y: 'numeric', yy: '2-digit'}); | |
| 115 | |
| 116 match = ldmlString.match(/M{1,5}/g); | |
| 117 options = appendToDateTimeObject(options, 'month', match, {MM: '2-digit', | |
| 118 M: 'numeric', MMMMM: 'narrow', MMM: 'short', MMMM: 'long'}); | |
| 119 | |
| 120 // Sometimes we get L instead of M for month - standalone name. | |
| 121 match = ldmlString.match(/L{1,5}/g); | |
| 122 options = appendToDateTimeObject(options, 'month', match, {LL: '2-digit', | |
| 123 L: 'numeric', LLLLL: 'narrow', LLL: 'short', LLLL: 'long'}); | |
| 124 | |
| 125 match = ldmlString.match(/d{1,2}/g); | |
| 126 options = appendToDateTimeObject( | |
| 127 options, 'day', match, {d: 'numeric', dd: '2-digit'}); | |
| 128 | |
| 129 match = ldmlString.match(/h{1,2}/g); | |
| 130 if (match !== null) { | |
| 131 options['hour12'] = true; | |
| 132 } | |
| 133 options = appendToDateTimeObject( | |
| 134 options, 'hour', match, {h: 'numeric', hh: '2-digit'}); | |
| 135 | |
| 136 match = ldmlString.match(/H{1,2}/g); | |
| 137 if (match !== null) { | |
| 138 options['hour12'] = false; | |
| 139 } | |
| 140 options = appendToDateTimeObject( | |
| 141 options, 'hour', match, {H: 'numeric', HH: '2-digit'}); | |
| 142 | |
| 143 match = ldmlString.match(/m{1,2}/g); | |
| 144 options = appendToDateTimeObject( | |
| 145 options, 'minute', match, {m: 'numeric', mm: '2-digit'}); | |
| 146 | |
| 147 match = ldmlString.match(/s{1,2}/g); | |
| 148 options = appendToDateTimeObject( | |
| 149 options, 'second', match, {s: 'numeric', ss: '2-digit'}); | |
| 150 | |
| 151 match = ldmlString.match(/v{1,2}/g); | |
| 152 options = appendToDateTimeObject( | |
| 153 options, 'timeZoneName', match, {v: 'short', vv: 'long'}); | |
| 154 | |
| 155 return options; | |
| 156 } | |
| 157 | |
| 158 | |
| 159 function appendToDateTimeObject(options, option, match, pairs) { | |
| 160 if (match === null) { | |
| 161 if (!options.hasOwnProperty(option)) { | |
| 162 defineWEProperty(options, option, undefined); | |
| 163 } | |
| 164 return options; | |
| 165 } | |
| 166 | |
| 167 var property = match[0]; | |
| 168 defineWEProperty(options, option, pairs[property]); | |
| 169 | |
| 170 return options; | |
| 171 } | |
| 172 | |
| 173 | |
| 174 /** | |
| 175 * Returns options with at least default values in it. | |
| 176 */ | |
| 177 function toDateTimeOptions(options, required, defaults) { | |
| 178 if (options === undefined) { | |
| 179 options = null; | |
| 180 } else { | |
| 181 options = toObject(options); | |
| 182 } | |
| 183 | |
| 184 options = Object.apply(this, [options]); | |
| 185 | |
| 186 var needsDefault = true; | |
| 187 if ((required === 'date' || required === 'any') && | |
| 188 (options.weekday !== undefined || options.year !== undefined || | |
| 189 options.month !== undefined || options.day !== undefined)) { | |
| 190 needsDefault = false; | |
| 191 } | |
| 192 | |
| 193 if ((required === 'time' || required === 'any') && | |
| 194 (options.hour !== undefined || options.minute !== undefined || | |
| 195 options.second !== undefined)) { | |
| 196 needsDefault = false; | |
| 197 } | |
| 198 | |
| 199 if (needsDefault && (defaults === 'date' || defaults === 'all')) { | |
| 200 Object.defineProperty(options, 'year', {value: 'numeric', | |
| 201 writable: true, | |
| 202 enumerable: true, | |
| 203 configurable: true}); | |
| 204 Object.defineProperty(options, 'month', {value: 'numeric', | |
| 205 writable: true, | |
| 206 enumerable: true, | |
| 207 configurable: true}); | |
| 208 Object.defineProperty(options, 'day', {value: 'numeric', | |
| 209 writable: true, | |
| 210 enumerable: true, | |
| 211 configurable: true}); | |
| 212 } | |
| 213 | |
| 214 if (needsDefault && (defaults === 'time' || defaults === 'all')) { | |
| 215 Object.defineProperty(options, 'hour', {value: 'numeric', | |
| 216 writable: true, | |
| 217 enumerable: true, | |
| 218 configurable: true}); | |
| 219 Object.defineProperty(options, 'minute', {value: 'numeric', | |
| 220 writable: true, | |
| 221 enumerable: true, | |
| 222 configurable: true}); | |
| 223 Object.defineProperty(options, 'second', {value: 'numeric', | |
| 224 writable: true, | |
| 225 enumerable: true, | |
| 226 configurable: true}); | |
| 227 } | |
| 228 | |
| 229 return options; | |
| 230 } | |
| 231 | |
| 232 | |
| 233 /** | |
| 234 * Initializes the given object so it's a valid DateTimeFormat instance. | |
| 235 * Useful for subclassing. | |
| 236 */ | |
| 237 function initializeDateTimeFormat(dateFormat, locales, options) { | |
| 238 | |
| 239 if (dateFormat.hasOwnProperty('__initializedIntlObject')) { | |
| 240 throw new TypeError('Trying to re-initialize DateTimeFormat object.'); | |
| 241 } | |
| 242 | |
| 243 if (options === undefined) { | |
| 244 options = {}; | |
| 245 } | |
| 246 | |
| 247 var locale = resolveLocale('dateformat', locales, options); | |
| 248 | |
| 249 options = toDateTimeOptions(options, 'any', 'date'); | |
| 250 | |
| 251 var getOption = getGetOption(options, 'dateformat'); | |
| 252 | |
| 253 // We implement only best fit algorithm, but still need to check | |
| 254 // if the formatMatcher values are in range. | |
| 255 var matcher = getOption('formatMatcher', 'string', | |
| 256 ['basic', 'best fit'], 'best fit'); | |
| 257 | |
| 258 // Build LDML string for the skeleton that we pass to the formatter. | |
| 259 var ldmlString = toLDMLString(options); | |
| 260 | |
| 261 // Filter out supported extension keys so we know what to put in resolved | |
| 262 // section later on. | |
| 263 // We need to pass calendar and number system to the method. | |
| 264 var tz = canonicalizeTimeZoneID(options.timeZone); | |
| 265 | |
| 266 // ICU prefers options to be passed using -u- extension key/values, so | |
| 267 // we need to build that. | |
| 268 var internalOptions = {}; | |
| 269 var extensionMap = parseExtension(locale.extension); | |
| 270 var extension = setOptions(options, extensionMap, DATETIME_FORMAT_KEY_MAP, | |
| 271 getOption, internalOptions); | |
| 272 | |
| 273 var requestedLocale = locale.locale + extension; | |
| 274 var resolved = Object.defineProperties({}, { | |
| 275 calendar: {writable: true}, | |
| 276 day: {writable: true}, | |
| 277 era: {writable: true}, | |
| 278 hour12: {writable: true}, | |
| 279 hour: {writable: true}, | |
| 280 locale: {writable: true}, | |
| 281 minute: {writable: true}, | |
| 282 month: {writable: true}, | |
| 283 numberingSystem: {writable: true}, | |
| 284 pattern: {writable: true}, | |
| 285 requestedLocale: {value: requestedLocale, writable: true}, | |
| 286 second: {writable: true}, | |
| 287 timeZone: {writable: true}, | |
| 288 timeZoneName: {writable: true}, | |
| 289 tz: {value: tz, writable: true}, | |
| 290 weekday: {writable: true}, | |
| 291 year: {writable: true} | |
| 292 }); | |
| 293 | |
| 294 var formatter = %CreateDateTimeFormat( | |
| 295 requestedLocale, {skeleton: ldmlString, timeZone: tz}, resolved); | |
| 296 | |
| 297 if (tz !== undefined && tz !== resolved.timeZone) { | |
| 298 throw new RangeError('Unsupported time zone specified ' + tz); | |
| 299 } | |
| 300 | |
| 301 Object.defineProperty(dateFormat, 'formatter', {value: formatter}); | |
| 302 Object.defineProperty(dateFormat, 'resolved', {value: resolved}); | |
| 303 Object.defineProperty(dateFormat, '__initializedIntlObject', | |
| 304 {value: 'dateformat'}); | |
| 305 | |
| 306 return dateFormat; | |
| 307 } | |
| 308 | |
| 309 | |
| 310 /** | |
| 311 * Constructs Intl.DateTimeFormat object given optional locales and options | |
| 312 * parameters. | |
| 313 * | |
| 314 * @constructor | |
| 315 */ | |
| 316 %SetProperty(Intl, 'DateTimeFormat', function() { | |
| 317 var locales = arguments[0]; | |
| 318 var options = arguments[1]; | |
| 319 | |
| 320 if (!this || this === Intl) { | |
| 321 // Constructor is called as a function. | |
| 322 return new Intl.DateTimeFormat(locales, options); | |
| 323 } | |
| 324 | |
| 325 return initializeDateTimeFormat(toObject(this), locales, options); | |
| 326 }, | |
| 327 ATTRIBUTES.DONT_ENUM | |
| 328 ); | |
| 329 | |
| 330 | |
| 331 /** | |
| 332 * DateTimeFormat resolvedOptions method. | |
| 333 */ | |
| 334 %SetProperty(Intl.DateTimeFormat.prototype, 'resolvedOptions', function() { | |
| 335 if (%_IsConstructCall()) { | |
| 336 throw new TypeError(ORDINARY_FUNCTION_CALLED_AS_CONSTRUCTOR); | |
| 337 } | |
| 338 | |
| 339 if (!this || typeof this !== 'object' || | |
| 340 this.__initializedIntlObject !== 'dateformat') { | |
| 341 throw new TypeError('resolvedOptions method called on a non-object or ' + | |
| 342 'on a object that is not Intl.DateTimeFormat.'); | |
| 343 } | |
| 344 | |
| 345 var format = this; | |
| 346 var fromPattern = fromLDMLString(format.resolved.pattern); | |
| 347 var userCalendar = ICU_CALENDAR_MAP[format.resolved.calendar]; | |
| 348 if (userCalendar === undefined) { | |
| 349 // Use ICU name if we don't have a match. It shouldn't happen, but | |
| 350 // it would be too strict to throw for this. | |
| 351 userCalendar = format.resolved.calendar; | |
| 352 } | |
| 353 | |
| 354 var locale = getOptimalLanguageTag(format.resolved.requestedLocale, | |
| 355 format.resolved.locale); | |
| 356 | |
| 357 var result = { | |
| 358 locale: locale, | |
| 359 numberingSystem: format.resolved.numberingSystem, | |
| 360 calendar: userCalendar, | |
| 361 timeZone: format.resolved.timeZone | |
| 362 }; | |
| 363 | |
| 364 addWECPropertyIfDefined(result, 'timeZoneName', fromPattern.timeZoneName); | |
| 365 addWECPropertyIfDefined(result, 'era', fromPattern.era); | |
| 366 addWECPropertyIfDefined(result, 'year', fromPattern.year); | |
| 367 addWECPropertyIfDefined(result, 'month', fromPattern.month); | |
| 368 addWECPropertyIfDefined(result, 'day', fromPattern.day); | |
| 369 addWECPropertyIfDefined(result, 'weekday', fromPattern.weekday); | |
| 370 addWECPropertyIfDefined(result, 'hour12', fromPattern.hour12); | |
| 371 addWECPropertyIfDefined(result, 'hour', fromPattern.hour); | |
| 372 addWECPropertyIfDefined(result, 'minute', fromPattern.minute); | |
| 373 addWECPropertyIfDefined(result, 'second', fromPattern.second); | |
| 374 | |
| 375 return result; | |
| 376 }, | |
| 377 ATTRIBUTES.DONT_ENUM | |
| 378 ); | |
| 379 %FunctionSetName(Intl.DateTimeFormat.prototype.resolvedOptions, | |
| 380 'resolvedOptions'); | |
| 381 %FunctionRemovePrototype(Intl.DateTimeFormat.prototype.resolvedOptions); | |
| 382 %SetNativeFlag(Intl.DateTimeFormat.prototype.resolvedOptions); | |
| 383 | |
| 384 | |
| 385 /** | |
| 386 * Returns the subset of the given locale list for which this locale list | |
| 387 * has a matching (possibly fallback) locale. Locales appear in the same | |
| 388 * order in the returned list as in the input list. | |
| 389 * Options are optional parameter. | |
| 390 */ | |
| 391 %SetProperty(Intl.DateTimeFormat, 'supportedLocalesOf', function(locales) { | |
| 392 if (%_IsConstructCall()) { | |
| 393 throw new TypeError(ORDINARY_FUNCTION_CALLED_AS_CONSTRUCTOR); | |
| 394 } | |
| 395 | |
| 396 return supportedLocalesOf('dateformat', locales, arguments[1]); | |
| 397 }, | |
| 398 ATTRIBUTES.DONT_ENUM | |
| 399 ); | |
| 400 %FunctionSetName(Intl.DateTimeFormat.supportedLocalesOf, 'supportedLocalesOf'); | |
| 401 %FunctionRemovePrototype(Intl.DateTimeFormat.supportedLocalesOf); | |
| 402 %SetNativeFlag(Intl.DateTimeFormat.supportedLocalesOf); | |
| 403 | |
| 404 | |
| 405 /** | |
| 406 * Returns a String value representing the result of calling ToNumber(date) | |
| 407 * according to the effective locale and the formatting options of this | |
| 408 * DateTimeFormat. | |
| 409 */ | |
| 410 function formatDate(formatter, dateValue) { | |
| 411 var dateMs; | |
| 412 if (dateValue === undefined) { | |
| 413 dateMs = Date.now(); | |
| 414 } else { | |
| 415 dateMs = Number(dateValue); | |
| 416 } | |
| 417 | |
| 418 if (!isFinite(dateMs)) { | |
| 419 throw new RangeError('Provided date is not in valid range.'); | |
| 420 } | |
| 421 | |
| 422 return %InternalDateFormat(formatter.formatter, new Date(dateMs)); | |
| 423 } | |
| 424 | |
| 425 | |
| 426 /** | |
| 427 * Returns a Date object representing the result of calling ToString(value) | |
| 428 * according to the effective locale and the formatting options of this | |
| 429 * DateTimeFormat. | |
| 430 * Returns undefined if date string cannot be parsed. | |
| 431 */ | |
| 432 function parseDate(formatter, value) { | |
| 433 return %InternalDateParse(formatter.formatter, String(value)); | |
| 434 } | |
| 435 | |
| 436 | |
| 437 // 0 because date is optional argument. | |
| 438 addBoundMethod(Intl.DateTimeFormat, 'format', formatDate, 0); | |
| 439 addBoundMethod(Intl.DateTimeFormat, 'v8Parse', parseDate, 1); | |
| 440 | |
| 441 | |
| 442 /** | |
| 443 * Returns canonical Area/Location name, or throws an exception if the zone | |
| 444 * name is invalid IANA name. | |
| 445 */ | |
| 446 function canonicalizeTimeZoneID(tzID) { | |
| 447 // Skip undefined zones. | |
| 448 if (tzID === undefined) { | |
| 449 return tzID; | |
| 450 } | |
| 451 | |
| 452 // Special case handling (UTC, GMT). | |
| 453 var upperID = tzID.toUpperCase(); | |
| 454 if (upperID === 'UTC' || upperID === 'GMT' || | |
| 455 upperID === 'ETC/UTC' || upperID === 'ETC/GMT') { | |
| 456 return 'UTC'; | |
| 457 } | |
| 458 | |
| 459 // We expect only _ and / beside ASCII letters. | |
| 460 // All inputs should conform to Area/Location from now on. | |
| 461 var match = TIMEZONE_NAME_CHECK_RE.exec(tzID); | |
| 462 if (match === null) { | |
| 463 throw new RangeError('Expected Area/Location for time zone, got ' + tzID); | |
| 464 } | |
| 465 | |
| 466 var result = toTitleCaseWord(match[1]) + '/' + toTitleCaseWord(match[2]); | |
| 467 var i = 3; | |
| 468 while (match[i] !== undefined && i < match.length) { | |
| 469 result = result + '_' + toTitleCaseWord(match[i]); | |
| 470 i++; | |
| 471 } | |
| 472 | |
| 473 return result; | |
| 474 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 23622028:
Snapshot i18n Javascript code (Closed)
Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge