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
42 using namespace icu;
43
44 namespace blink {
45
create(const String & locale)46 PassOwnPtr<Locale> Locale::create(const String& locale)
47 {
48 return LocaleICU::create(locale.utf8().data());
49 }
50
LocaleICU(const char * locale)51 LocaleICU::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
~LocaleICU()64 LocaleICU::~LocaleICU()
65 {
66 unum_close(m_numberFormat);
67 udat_close(m_shortDateFormat);
68 udat_close(m_mediumTimeFormat);
69 udat_close(m_shortTimeFormat);
70 }
71
create(const char * localeString)72 PassOwnPtr<LocaleICU> LocaleICU::create(const char* localeString)
73 {
74 return adoptPtr(new LocaleICU(localeString));
75 }
76
decimalSymbol(UNumberFormatSymbol symbol)77 String 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
decimalTextAttribute(UNumberFormatTextAttribute tag)92 String 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
initializeLocaleData()108 void 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
initializeShortDateFormat()135 bool 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
openDateFormat(UDateFormatStyle timeStyle,UDateFormatStyle dateStyle) const144 UDateFormat* 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
getDateFormatPattern(const UDateFormat * dateFormat)151 static 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
createLabelVector(const UDateFormat * dateFormat,UDateFormatSymbolType type,int32_t startIndex,int32_t size)168 PassOwnPtr<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
createFallbackWeekDayShortLabels()192 static 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
initializeCalendar()206 void 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
createFallbackMonthLabels()223 static 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
monthLabels()232 const 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
weekDayShortLabels()245 const Vector<String>& LocaleICU::weekDayShortLabels()
246 {
247 initializeCalendar();
248 return *m_weekDayShortLabels;
249 }
250
firstDayOfWeek()251 unsigned LocaleICU::firstDayOfWeek()
252 {
253 initializeCalendar();
254 return m_firstDayOfWeek;
255 }
256
isRTL()257 bool LocaleICU::isRTL()
258 {
259 UErrorCode status = U_ZERO_ERROR;
260 return uloc_getCharacterOrientation(m_locale.data(), &status) == ULOC_LAYOUT_RTL;
261 }
262
createFallbackAMPMLabels()263 static 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
initializeDateTimeFormat()272 void 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
dateFormat()302 String 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
getFormatForSkeleton(const char * locale,const String & skeleton)312 static 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
monthFormat()334 String 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
shortMonthFormat()344 String 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
timeFormat()352 String LocaleICU::timeFormat()
353 {
354 initializeDateTimeFormat();
355 return m_timeFormatWithSeconds;
356 }
357
shortTimeFormat()358 String LocaleICU::shortTimeFormat()
359 {
360 initializeDateTimeFormat();
361 return m_timeFormatWithoutSeconds;
362 }
363
dateTimeFormatWithSeconds()364 String LocaleICU::dateTimeFormatWithSeconds()
365 {
366 initializeDateTimeFormat();
367 return m_dateTimeFormatWithSeconds;
368 }
369
dateTimeFormatWithoutSeconds()370 String LocaleICU::dateTimeFormatWithoutSeconds()
371 {
372 initializeDateTimeFormat();
373 return m_dateTimeFormatWithoutSeconds;
374 }
375
shortMonthLabels()376 const 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
standAloneMonthLabels()392 const 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
shortStandAloneMonthLabels()406 const 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
timeAMPMLabels()420 const Vector<String>& LocaleICU::timeAMPMLabels()
421 {
422 initializeDateTimeFormat();
423 return m_timeAMPMLabels;
424 }
425
426 } // namespace blink
427
428