• Home
  • History
  • Annotate
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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