1/* 2 * Copyright (C) 2011,2012 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include "config.h" 32#include "platform/text/LocaleICU.h" 33 34#include <unicode/udatpg.h> 35#include <unicode/uloc.h> 36#include <limits> 37#include "wtf/DateMath.h" 38#include "wtf/PassOwnPtr.h" 39#include "wtf/text/StringBuffer.h" 40#include "wtf/text/StringBuilder.h" 41 42using namespace icu; 43 44namespace blink { 45 46PassOwnPtr<Locale> Locale::create(const String& locale) 47{ 48 return LocaleICU::create(locale.utf8().data()); 49} 50 51LocaleICU::LocaleICU(const char* locale) 52 : m_locale(locale) 53 , m_numberFormat(0) 54 , m_shortDateFormat(0) 55 , m_didCreateDecimalFormat(false) 56 , m_didCreateShortDateFormat(false) 57 , m_firstDayOfWeek(0) 58 , m_mediumTimeFormat(0) 59 , m_shortTimeFormat(0) 60 , m_didCreateTimeFormat(false) 61{ 62} 63 64LocaleICU::~LocaleICU() 65{ 66 unum_close(m_numberFormat); 67 udat_close(m_shortDateFormat); 68 udat_close(m_mediumTimeFormat); 69 udat_close(m_shortTimeFormat); 70} 71 72PassOwnPtr<LocaleICU> LocaleICU::create(const char* localeString) 73{ 74 return adoptPtr(new LocaleICU(localeString)); 75} 76 77String LocaleICU::decimalSymbol(UNumberFormatSymbol symbol) 78{ 79 UErrorCode status = U_ZERO_ERROR; 80 int32_t bufferLength = unum_getSymbol(m_numberFormat, symbol, 0, 0, &status); 81 ASSERT(U_SUCCESS(status) || status == U_BUFFER_OVERFLOW_ERROR); 82 if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR) 83 return String(); 84 StringBuffer<UChar> buffer(bufferLength); 85 status = U_ZERO_ERROR; 86 unum_getSymbol(m_numberFormat, symbol, buffer.characters(), bufferLength, &status); 87 if (U_FAILURE(status)) 88 return String(); 89 return String::adopt(buffer); 90} 91 92String LocaleICU::decimalTextAttribute(UNumberFormatTextAttribute tag) 93{ 94 UErrorCode status = U_ZERO_ERROR; 95 int32_t bufferLength = unum_getTextAttribute(m_numberFormat, tag, 0, 0, &status); 96 ASSERT(U_SUCCESS(status) || status == U_BUFFER_OVERFLOW_ERROR); 97 if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR) 98 return String(); 99 StringBuffer<UChar> buffer(bufferLength); 100 status = U_ZERO_ERROR; 101 unum_getTextAttribute(m_numberFormat, tag, buffer.characters(), bufferLength, &status); 102 ASSERT(U_SUCCESS(status)); 103 if (U_FAILURE(status)) 104 return String(); 105 return String::adopt(buffer); 106} 107 108void LocaleICU::initializeLocaleData() 109{ 110 if (m_didCreateDecimalFormat) 111 return; 112 m_didCreateDecimalFormat = true; 113 UErrorCode status = U_ZERO_ERROR; 114 m_numberFormat = unum_open(UNUM_DECIMAL, 0, 0, m_locale.data(), 0, &status); 115 if (!U_SUCCESS(status)) 116 return; 117 118 Vector<String, DecimalSymbolsSize> symbols; 119 symbols.append(decimalSymbol(UNUM_ZERO_DIGIT_SYMBOL)); 120 symbols.append(decimalSymbol(UNUM_ONE_DIGIT_SYMBOL)); 121 symbols.append(decimalSymbol(UNUM_TWO_DIGIT_SYMBOL)); 122 symbols.append(decimalSymbol(UNUM_THREE_DIGIT_SYMBOL)); 123 symbols.append(decimalSymbol(UNUM_FOUR_DIGIT_SYMBOL)); 124 symbols.append(decimalSymbol(UNUM_FIVE_DIGIT_SYMBOL)); 125 symbols.append(decimalSymbol(UNUM_SIX_DIGIT_SYMBOL)); 126 symbols.append(decimalSymbol(UNUM_SEVEN_DIGIT_SYMBOL)); 127 symbols.append(decimalSymbol(UNUM_EIGHT_DIGIT_SYMBOL)); 128 symbols.append(decimalSymbol(UNUM_NINE_DIGIT_SYMBOL)); 129 symbols.append(decimalSymbol(UNUM_DECIMAL_SEPARATOR_SYMBOL)); 130 symbols.append(decimalSymbol(UNUM_GROUPING_SEPARATOR_SYMBOL)); 131 ASSERT(symbols.size() == DecimalSymbolsSize); 132 setLocaleData(symbols, decimalTextAttribute(UNUM_POSITIVE_PREFIX), decimalTextAttribute(UNUM_POSITIVE_SUFFIX), decimalTextAttribute(UNUM_NEGATIVE_PREFIX), decimalTextAttribute(UNUM_NEGATIVE_SUFFIX)); 133} 134 135bool LocaleICU::initializeShortDateFormat() 136{ 137 if (m_didCreateShortDateFormat) 138 return m_shortDateFormat; 139 m_shortDateFormat = openDateFormat(UDAT_NONE, UDAT_SHORT); 140 m_didCreateShortDateFormat = true; 141 return m_shortDateFormat; 142} 143 144UDateFormat* LocaleICU::openDateFormat(UDateFormatStyle timeStyle, UDateFormatStyle dateStyle) const 145{ 146 const UChar gmtTimezone[3] = {'G', 'M', 'T'}; 147 UErrorCode status = U_ZERO_ERROR; 148 return udat_open(timeStyle, dateStyle, m_locale.data(), gmtTimezone, WTF_ARRAY_LENGTH(gmtTimezone), 0, -1, &status); 149} 150 151static String getDateFormatPattern(const UDateFormat* dateFormat) 152{ 153 if (!dateFormat) 154 return emptyString(); 155 156 UErrorCode status = U_ZERO_ERROR; 157 int32_t length = udat_toPattern(dateFormat, TRUE, 0, 0, &status); 158 if (status != U_BUFFER_OVERFLOW_ERROR || !length) 159 return emptyString(); 160 StringBuffer<UChar> buffer(length); 161 status = U_ZERO_ERROR; 162 udat_toPattern(dateFormat, TRUE, buffer.characters(), length, &status); 163 if (U_FAILURE(status)) 164 return emptyString(); 165 return String::adopt(buffer); 166} 167 168PassOwnPtr<Vector<String> > LocaleICU::createLabelVector(const UDateFormat* dateFormat, UDateFormatSymbolType type, int32_t startIndex, int32_t size) 169{ 170 if (!dateFormat) 171 return PassOwnPtr<Vector<String> >(); 172 if (udat_countSymbols(dateFormat, type) != startIndex + size) 173 return PassOwnPtr<Vector<String> >(); 174 175 OwnPtr<Vector<String> > labels = adoptPtr(new Vector<String>()); 176 labels->reserveCapacity(size); 177 for (int32_t i = 0; i < size; ++i) { 178 UErrorCode status = U_ZERO_ERROR; 179 int32_t length = udat_getSymbols(dateFormat, type, startIndex + i, 0, 0, &status); 180 if (status != U_BUFFER_OVERFLOW_ERROR) 181 return PassOwnPtr<Vector<String> >(); 182 StringBuffer<UChar> buffer(length); 183 status = U_ZERO_ERROR; 184 udat_getSymbols(dateFormat, type, startIndex + i, buffer.characters(), length, &status); 185 if (U_FAILURE(status)) 186 return PassOwnPtr<Vector<String> >(); 187 labels->append(String::adopt(buffer)); 188 } 189 return labels.release(); 190} 191 192static PassOwnPtr<Vector<String> > createFallbackWeekDayShortLabels() 193{ 194 OwnPtr<Vector<String> > labels = adoptPtr(new Vector<String>()); 195 labels->reserveCapacity(7); 196 labels->append("Sun"); 197 labels->append("Mon"); 198 labels->append("Tue"); 199 labels->append("Wed"); 200 labels->append("Thu"); 201 labels->append("Fri"); 202 labels->append("Sat"); 203 return labels.release(); 204} 205 206void LocaleICU::initializeCalendar() 207{ 208 if (m_weekDayShortLabels) 209 return; 210 211 if (!initializeShortDateFormat()) { 212 m_firstDayOfWeek = 0; 213 m_weekDayShortLabels = createFallbackWeekDayShortLabels(); 214 return; 215 } 216 m_firstDayOfWeek = ucal_getAttribute(udat_getCalendar(m_shortDateFormat), UCAL_FIRST_DAY_OF_WEEK) - UCAL_SUNDAY; 217 218 m_weekDayShortLabels = createLabelVector(m_shortDateFormat, UDAT_SHORT_WEEKDAYS, UCAL_SUNDAY, 7); 219 if (!m_weekDayShortLabels) 220 m_weekDayShortLabels = createFallbackWeekDayShortLabels(); 221} 222 223static PassOwnPtr<Vector<String> > createFallbackMonthLabels() 224{ 225 OwnPtr<Vector<String> > labels = adoptPtr(new Vector<String>()); 226 labels->reserveCapacity(WTF_ARRAY_LENGTH(WTF::monthFullName)); 227 for (unsigned i = 0; i < WTF_ARRAY_LENGTH(WTF::monthFullName); ++i) 228 labels->append(WTF::monthFullName[i]); 229 return labels.release(); 230} 231 232const Vector<String>& LocaleICU::monthLabels() 233{ 234 if (m_monthLabels) 235 return *m_monthLabels; 236 if (initializeShortDateFormat()) { 237 m_monthLabels = createLabelVector(m_shortDateFormat, UDAT_MONTHS, UCAL_JANUARY, 12); 238 if (m_monthLabels) 239 return *m_monthLabels; 240 } 241 m_monthLabels = createFallbackMonthLabels(); 242 return *m_monthLabels; 243} 244 245const Vector<String>& LocaleICU::weekDayShortLabels() 246{ 247 initializeCalendar(); 248 return *m_weekDayShortLabels; 249} 250 251unsigned LocaleICU::firstDayOfWeek() 252{ 253 initializeCalendar(); 254 return m_firstDayOfWeek; 255} 256 257bool LocaleICU::isRTL() 258{ 259 UErrorCode status = U_ZERO_ERROR; 260 return uloc_getCharacterOrientation(m_locale.data(), &status) == ULOC_LAYOUT_RTL; 261} 262 263static PassOwnPtr<Vector<String> > createFallbackAMPMLabels() 264{ 265 OwnPtr<Vector<String> > labels = adoptPtr(new Vector<String>()); 266 labels->reserveCapacity(2); 267 labels->append("AM"); 268 labels->append("PM"); 269 return labels.release(); 270} 271 272void LocaleICU::initializeDateTimeFormat() 273{ 274 if (m_didCreateTimeFormat) 275 return; 276 277 // We assume ICU medium time pattern and short time pattern are compatible 278 // with LDML, because ICU specific pattern character "V" doesn't appear 279 // in both medium and short time pattern. 280 m_mediumTimeFormat = openDateFormat(UDAT_MEDIUM, UDAT_NONE); 281 m_timeFormatWithSeconds = getDateFormatPattern(m_mediumTimeFormat); 282 283 m_shortTimeFormat = openDateFormat(UDAT_SHORT, UDAT_NONE); 284 m_timeFormatWithoutSeconds = getDateFormatPattern(m_shortTimeFormat); 285 286 UDateFormat* dateTimeFormatWithSeconds = openDateFormat(UDAT_MEDIUM, UDAT_SHORT); 287 m_dateTimeFormatWithSeconds = getDateFormatPattern(dateTimeFormatWithSeconds); 288 udat_close(dateTimeFormatWithSeconds); 289 290 UDateFormat* dateTimeFormatWithoutSeconds = openDateFormat(UDAT_SHORT, UDAT_SHORT); 291 m_dateTimeFormatWithoutSeconds = getDateFormatPattern(dateTimeFormatWithoutSeconds); 292 udat_close(dateTimeFormatWithoutSeconds); 293 294 OwnPtr<Vector<String> > timeAMPMLabels = createLabelVector(m_mediumTimeFormat, UDAT_AM_PMS, UCAL_AM, 2); 295 if (!timeAMPMLabels) 296 timeAMPMLabels = createFallbackAMPMLabels(); 297 m_timeAMPMLabels = *timeAMPMLabels; 298 299 m_didCreateTimeFormat = true; 300} 301 302String LocaleICU::dateFormat() 303{ 304 if (!m_dateFormat.isNull()) 305 return m_dateFormat; 306 if (!initializeShortDateFormat()) 307 return "yyyy-MM-dd"; 308 m_dateFormat = getDateFormatPattern(m_shortDateFormat); 309 return m_dateFormat; 310} 311 312static String getFormatForSkeleton(const char* locale, const String& skeleton) 313{ 314 String format = "yyyy-MM"; 315 UErrorCode status = U_ZERO_ERROR; 316 UDateTimePatternGenerator* patternGenerator = udatpg_open(locale, &status); 317 if (!patternGenerator) 318 return format; 319 status = U_ZERO_ERROR; 320 Vector<UChar> skeletonCharacters; 321 skeleton.appendTo(skeletonCharacters); 322 int32_t length = udatpg_getBestPattern(patternGenerator, skeletonCharacters.data(), skeletonCharacters.size(), 0, 0, &status); 323 if (status == U_BUFFER_OVERFLOW_ERROR && length) { 324 StringBuffer<UChar> buffer(length); 325 status = U_ZERO_ERROR; 326 udatpg_getBestPattern(patternGenerator, skeletonCharacters.data(), skeletonCharacters.size(), buffer.characters(), length, &status); 327 if (U_SUCCESS(status)) 328 format = String::adopt(buffer); 329 } 330 udatpg_close(patternGenerator); 331 return format; 332} 333 334String LocaleICU::monthFormat() 335{ 336 if (!m_monthFormat.isNull()) 337 return m_monthFormat; 338 // Gets a format for "MMMM" because Windows API always provides formats for 339 // "MMMM" in some locales. 340 m_monthFormat = getFormatForSkeleton(m_locale.data(), "yyyyMMMM"); 341 return m_monthFormat; 342} 343 344String LocaleICU::shortMonthFormat() 345{ 346 if (!m_shortMonthFormat.isNull()) 347 return m_shortMonthFormat; 348 m_shortMonthFormat = getFormatForSkeleton(m_locale.data(), "yyyyMMM"); 349 return m_shortMonthFormat; 350} 351 352String LocaleICU::timeFormat() 353{ 354 initializeDateTimeFormat(); 355 return m_timeFormatWithSeconds; 356} 357 358String LocaleICU::shortTimeFormat() 359{ 360 initializeDateTimeFormat(); 361 return m_timeFormatWithoutSeconds; 362} 363 364String LocaleICU::dateTimeFormatWithSeconds() 365{ 366 initializeDateTimeFormat(); 367 return m_dateTimeFormatWithSeconds; 368} 369 370String LocaleICU::dateTimeFormatWithoutSeconds() 371{ 372 initializeDateTimeFormat(); 373 return m_dateTimeFormatWithoutSeconds; 374} 375 376const Vector<String>& LocaleICU::shortMonthLabels() 377{ 378 if (!m_shortMonthLabels.isEmpty()) 379 return m_shortMonthLabels; 380 if (initializeShortDateFormat()) { 381 if (OwnPtr<Vector<String> > labels = createLabelVector(m_shortDateFormat, UDAT_SHORT_MONTHS, UCAL_JANUARY, 12)) { 382 m_shortMonthLabels = *labels; 383 return m_shortMonthLabels; 384 } 385 } 386 m_shortMonthLabels.reserveCapacity(WTF_ARRAY_LENGTH(WTF::monthName)); 387 for (unsigned i = 0; i < WTF_ARRAY_LENGTH(WTF::monthName); ++i) 388 m_shortMonthLabels.append(WTF::monthName[i]); 389 return m_shortMonthLabels; 390} 391 392const Vector<String>& LocaleICU::standAloneMonthLabels() 393{ 394 if (!m_standAloneMonthLabels.isEmpty()) 395 return m_standAloneMonthLabels; 396 if (initializeShortDateFormat()) { 397 if (OwnPtr<Vector<String> > labels = createLabelVector(m_shortDateFormat, UDAT_STANDALONE_MONTHS, UCAL_JANUARY, 12)) { 398 m_standAloneMonthLabels = *labels; 399 return m_standAloneMonthLabels; 400 } 401 } 402 m_standAloneMonthLabels = monthLabels(); 403 return m_standAloneMonthLabels; 404} 405 406const Vector<String>& LocaleICU::shortStandAloneMonthLabels() 407{ 408 if (!m_shortStandAloneMonthLabels.isEmpty()) 409 return m_shortStandAloneMonthLabels; 410 if (initializeShortDateFormat()) { 411 if (OwnPtr<Vector<String> > labels = createLabelVector(m_shortDateFormat, UDAT_STANDALONE_SHORT_MONTHS, UCAL_JANUARY, 12)) { 412 m_shortStandAloneMonthLabels = *labels; 413 return m_shortStandAloneMonthLabels; 414 } 415 } 416 m_shortStandAloneMonthLabels = shortMonthLabels(); 417 return m_shortStandAloneMonthLabels; 418} 419 420const Vector<String>& LocaleICU::timeAMPMLabels() 421{ 422 initializeDateTimeFormat(); 423 return m_timeAMPMLabels; 424} 425 426} // namespace blink 427 428