1/*
2 * Copyright (C) 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/LocaleMac.h"
33
34#import <Foundation/NSDateFormatter.h>
35#import <Foundation/NSLocale.h>
36#include "platform/Language.h"
37#include "wtf/DateMath.h"
38#include "wtf/PassOwnPtr.h"
39#include "wtf/RetainPtr.h"
40#include "wtf/text/StringBuilder.h"
41
42namespace blink {
43
44static inline String languageFromLocale(const String& locale)
45{
46    String normalizedLocale = locale;
47    normalizedLocale.replace('-', '_');
48    size_t separatorPosition = normalizedLocale.find('_');
49    if (separatorPosition == kNotFound)
50        return normalizedLocale;
51    return normalizedLocale.left(separatorPosition);
52}
53
54static RetainPtr<NSLocale> determineLocale(const String& locale)
55{
56    RetainPtr<NSLocale> currentLocale = [NSLocale currentLocale];
57    String currentLocaleLanguage = languageFromLocale(String([currentLocale.get() localeIdentifier]));
58    String localeLanguage = languageFromLocale(locale);
59    if (equalIgnoringCase(currentLocaleLanguage, localeLanguage))
60        return currentLocale;
61    // It seems initWithLocaleIdentifier accepts dash-separated locale identifier.
62     return RetainPtr<NSLocale>(AdoptNS, [[NSLocale alloc] initWithLocaleIdentifier:locale]);
63}
64
65PassOwnPtr<Locale> Locale::create(const String& locale)
66{
67    return LocaleMac::create(determineLocale(locale).get());
68}
69
70static RetainPtr<NSDateFormatter> createDateTimeFormatter(NSLocale* locale, NSCalendar* calendar, NSDateFormatterStyle dateStyle, NSDateFormatterStyle timeStyle)
71{
72    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
73    [formatter setLocale:locale];
74    [formatter setDateStyle:dateStyle];
75    [formatter setTimeStyle:timeStyle];
76    [formatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];
77    [formatter setCalendar:calendar];
78    return adoptNS(formatter);
79}
80
81LocaleMac::LocaleMac(NSLocale* locale)
82    : m_locale(locale)
83    , m_gregorianCalendar(AdoptNS, [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar])
84    , m_didInitializeNumberData(false)
85{
86    NSArray* availableLanguages = [NSLocale ISOLanguageCodes];
87    // NSLocale returns a lower case NSLocaleLanguageCode so we don't have care about case.
88    NSString* language = [m_locale.get() objectForKey:NSLocaleLanguageCode];
89    if ([availableLanguages indexOfObject:language] == NSNotFound)
90        m_locale.adoptNS([[NSLocale alloc] initWithLocaleIdentifier:defaultLanguage()]);
91    [m_gregorianCalendar.get() setLocale:m_locale.get()];
92}
93
94LocaleMac::~LocaleMac()
95{
96}
97
98PassOwnPtr<LocaleMac> LocaleMac::create(const String& localeIdentifier)
99{
100    RetainPtr<NSLocale> locale = [[NSLocale alloc] initWithLocaleIdentifier:localeIdentifier];
101    return adoptPtr(new LocaleMac(locale.get()));
102}
103
104PassOwnPtr<LocaleMac> LocaleMac::create(NSLocale* locale)
105{
106    return adoptPtr(new LocaleMac(locale));
107}
108
109RetainPtr<NSDateFormatter> LocaleMac::shortDateFormatter()
110{
111    return createDateTimeFormatter(m_locale.get(), m_gregorianCalendar.get(), NSDateFormatterShortStyle, NSDateFormatterNoStyle);
112}
113
114const Vector<String>& LocaleMac::monthLabels()
115{
116    if (!m_monthLabels.isEmpty())
117        return m_monthLabels;
118    m_monthLabels.reserveCapacity(12);
119    NSArray *array = [shortDateFormatter().get() monthSymbols];
120    if ([array count] == 12) {
121        for (unsigned i = 0; i < 12; ++i)
122            m_monthLabels.append(String([array objectAtIndex:i]));
123        return m_monthLabels;
124    }
125    for (unsigned i = 0; i < WTF_ARRAY_LENGTH(WTF::monthFullName); ++i)
126        m_monthLabels.append(WTF::monthFullName[i]);
127    return m_monthLabels;
128}
129
130const Vector<String>& LocaleMac::weekDayShortLabels()
131{
132    if (!m_weekDayShortLabels.isEmpty())
133        return m_weekDayShortLabels;
134    m_weekDayShortLabels.reserveCapacity(7);
135    NSArray *array = [shortDateFormatter().get() shortWeekdaySymbols];
136    if ([array count] == 7) {
137        for (unsigned i = 0; i < 7; ++i)
138            m_weekDayShortLabels.append(String([array objectAtIndex:i]));
139        return m_weekDayShortLabels;
140    }
141    for (unsigned i = 0; i < WTF_ARRAY_LENGTH(WTF::weekdayName); ++i) {
142        // weekdayName starts with Monday.
143        m_weekDayShortLabels.append(WTF::weekdayName[(i + 6) % 7]);
144    }
145    return m_weekDayShortLabels;
146}
147
148unsigned LocaleMac::firstDayOfWeek()
149{
150    // The document for NSCalendar - firstWeekday doesn't have an explanation of
151    // firstWeekday value. We can guess it by the document of NSDateComponents -
152    // weekDay, so it can be 1 through 7 and 1 is Sunday.
153    return [m_gregorianCalendar.get() firstWeekday] - 1;
154}
155
156bool LocaleMac::isRTL()
157{
158    return NSLocaleLanguageDirectionRightToLeft == [NSLocale characterDirectionForLanguage:[NSLocale canonicalLanguageIdentifierFromString:[m_locale.get() localeIdentifier]]];
159}
160
161RetainPtr<NSDateFormatter> LocaleMac::timeFormatter()
162{
163    return createDateTimeFormatter(m_locale.get(), m_gregorianCalendar.get(), NSDateFormatterNoStyle, NSDateFormatterMediumStyle);
164}
165
166RetainPtr<NSDateFormatter> LocaleMac::shortTimeFormatter()
167{
168    return createDateTimeFormatter(m_locale.get(), m_gregorianCalendar.get(), NSDateFormatterNoStyle, NSDateFormatterShortStyle);
169}
170
171RetainPtr<NSDateFormatter> LocaleMac::dateTimeFormatterWithSeconds()
172{
173    return createDateTimeFormatter(m_locale.get(), m_gregorianCalendar.get(), NSDateFormatterShortStyle, NSDateFormatterMediumStyle);
174}
175
176RetainPtr<NSDateFormatter> LocaleMac::dateTimeFormatterWithoutSeconds()
177{
178    return createDateTimeFormatter(m_locale.get(), m_gregorianCalendar.get(), NSDateFormatterShortStyle, NSDateFormatterShortStyle);
179}
180
181String LocaleMac::dateFormat()
182{
183    if (!m_dateFormat.isNull())
184        return m_dateFormat;
185    m_dateFormat = [shortDateFormatter().get() dateFormat];
186    return m_dateFormat;
187}
188
189String LocaleMac::monthFormat()
190{
191    if (!m_monthFormat.isNull())
192        return m_monthFormat;
193    // Gets a format for "MMMM" because Windows API always provides formats for
194    // "MMMM" in some locales.
195    m_monthFormat = [NSDateFormatter dateFormatFromTemplate:@"yyyyMMMM" options:0 locale:m_locale.get()];
196    return m_monthFormat;
197}
198
199String LocaleMac::shortMonthFormat()
200{
201    if (!m_shortMonthFormat.isNull())
202        return m_shortMonthFormat;
203    m_shortMonthFormat = [NSDateFormatter dateFormatFromTemplate:@"yyyyMMM" options:0 locale:m_locale.get()];
204    return m_shortMonthFormat;
205}
206
207String LocaleMac::timeFormat()
208{
209    if (!m_timeFormatWithSeconds.isNull())
210        return m_timeFormatWithSeconds;
211    m_timeFormatWithSeconds = [timeFormatter().get() dateFormat];
212    return m_timeFormatWithSeconds;
213}
214
215String LocaleMac::shortTimeFormat()
216{
217    if (!m_timeFormatWithoutSeconds.isNull())
218        return m_timeFormatWithoutSeconds;
219    m_timeFormatWithoutSeconds = [shortTimeFormatter().get() dateFormat];
220    return m_timeFormatWithoutSeconds;
221}
222
223String LocaleMac::dateTimeFormatWithSeconds()
224{
225    if (!m_dateTimeFormatWithSeconds.isNull())
226        return m_dateTimeFormatWithSeconds;
227    m_dateTimeFormatWithSeconds = [dateTimeFormatterWithSeconds().get() dateFormat];
228    return m_dateTimeFormatWithSeconds;
229}
230
231String LocaleMac::dateTimeFormatWithoutSeconds()
232{
233    if (!m_dateTimeFormatWithoutSeconds.isNull())
234        return m_dateTimeFormatWithoutSeconds;
235    m_dateTimeFormatWithoutSeconds = [dateTimeFormatterWithoutSeconds().get() dateFormat];
236    return m_dateTimeFormatWithoutSeconds;
237}
238
239const Vector<String>& LocaleMac::shortMonthLabels()
240{
241    if (!m_shortMonthLabels.isEmpty())
242        return m_shortMonthLabels;
243    m_shortMonthLabels.reserveCapacity(12);
244    NSArray *array = [shortDateFormatter().get() shortMonthSymbols];
245    if ([array count] == 12) {
246        for (unsigned i = 0; i < 12; ++i)
247            m_shortMonthLabels.append([array objectAtIndex:i]);
248        return m_shortMonthLabels;
249    }
250    for (unsigned i = 0; i < WTF_ARRAY_LENGTH(WTF::monthName); ++i)
251        m_shortMonthLabels.append(WTF::monthName[i]);
252    return m_shortMonthLabels;
253}
254
255const Vector<String>& LocaleMac::standAloneMonthLabels()
256{
257    if (!m_standAloneMonthLabels.isEmpty())
258        return m_standAloneMonthLabels;
259    NSArray *array = [shortDateFormatter().get() standaloneMonthSymbols];
260    if ([array count] == 12) {
261        m_standAloneMonthLabels.reserveCapacity(12);
262        for (unsigned i = 0; i < 12; ++i)
263            m_standAloneMonthLabels.append([array objectAtIndex:i]);
264        return m_standAloneMonthLabels;
265    }
266    m_standAloneMonthLabels = shortMonthLabels();
267    return m_standAloneMonthLabels;
268}
269
270const Vector<String>& LocaleMac::shortStandAloneMonthLabels()
271{
272    if (!m_shortStandAloneMonthLabels.isEmpty())
273        return m_shortStandAloneMonthLabels;
274    NSArray *array = [shortDateFormatter().get() shortStandaloneMonthSymbols];
275    if ([array count] == 12) {
276        m_shortStandAloneMonthLabels.reserveCapacity(12);
277        for (unsigned i = 0; i < 12; ++i)
278            m_shortStandAloneMonthLabels.append([array objectAtIndex:i]);
279        return m_shortStandAloneMonthLabels;
280    }
281    m_shortStandAloneMonthLabels = shortMonthLabels();
282    return m_shortStandAloneMonthLabels;
283}
284
285const Vector<String>& LocaleMac::timeAMPMLabels()
286{
287    if (!m_timeAMPMLabels.isEmpty())
288        return m_timeAMPMLabels;
289    m_timeAMPMLabels.reserveCapacity(2);
290    RetainPtr<NSDateFormatter> formatter = shortTimeFormatter();
291    m_timeAMPMLabels.append([formatter.get() AMSymbol]);
292    m_timeAMPMLabels.append([formatter.get() PMSymbol]);
293    return m_timeAMPMLabels;
294}
295
296void LocaleMac::initializeLocaleData()
297{
298    if (m_didInitializeNumberData)
299        return;
300    m_didInitializeNumberData = true;
301
302    RetainPtr<NSNumberFormatter> formatter(AdoptNS, [[NSNumberFormatter alloc] init]);
303    [formatter.get() setLocale:m_locale.get()];
304    [formatter.get() setNumberStyle:NSNumberFormatterDecimalStyle];
305    [formatter.get() setUsesGroupingSeparator:NO];
306
307    RetainPtr<NSNumber> sampleNumber(AdoptNS, [[NSNumber alloc] initWithDouble:9876543210]);
308    String nineToZero([formatter.get() stringFromNumber:sampleNumber.get()]);
309    if (nineToZero.length() != 10)
310        return;
311    Vector<String, DecimalSymbolsSize> symbols;
312    for (unsigned i = 0; i < 10; ++i)
313        symbols.append(nineToZero.substring(9 - i, 1));
314    ASSERT(symbols.size() == DecimalSeparatorIndex);
315    symbols.append([formatter.get() decimalSeparator]);
316    ASSERT(symbols.size() == GroupSeparatorIndex);
317    symbols.append([formatter.get() groupingSeparator]);
318    ASSERT(symbols.size() == DecimalSymbolsSize);
319
320    String positivePrefix([formatter.get() positivePrefix]);
321    String positiveSuffix([formatter.get() positiveSuffix]);
322    String negativePrefix([formatter.get() negativePrefix]);
323    String negativeSuffix([formatter.get() negativeSuffix]);
324    setLocaleData(symbols, positivePrefix, positiveSuffix, negativePrefix, negativeSuffix);
325}
326
327}
328