| /* |
| * Copyright (C) 2007-2020 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #include "config.h" |
| #include <wtf/text/TextBreakIteratorInternalICU.h> |
| |
| #include <array> |
| #include <wtf/RetainPtr.h> |
| #include <wtf/cf/TypeCastsCF.h> |
| #include <wtf/text/TextBreakIterator.h> |
| |
| namespace WTF { |
| |
| // Buffer sized to hold ASCII locale ID strings up to 32 characters long. |
| using LocaleIDBuffer = std::array<char, 33>; |
| |
| static std::variant<TextBreakIteratorICU, TextBreakIteratorPlatform> mapModeToBackingIterator(StringView string, TextBreakIterator::Mode mode, const AtomString& locale) |
| { |
| switch (mode) { |
| case TextBreakIterator::Mode::Line: |
| return TextBreakIteratorICU(string, TextBreakIteratorICU::Mode::Line, locale.string().utf8().data()); |
| case TextBreakIterator::Mode::Caret: |
| return TextBreakIteratorCF(string, TextBreakIteratorCF::Mode::Caret); |
| case TextBreakIterator::Mode::Delete: |
| return TextBreakIteratorCF(string, TextBreakIteratorCF::Mode::Delete); |
| } |
| } |
| |
| TextBreakIterator::TextBreakIterator(StringView string, Mode mode, const AtomString& locale) |
| : m_backing(mapModeToBackingIterator(string, mode, locale)) |
| , m_mode(mode) |
| , m_locale(locale) |
| { |
| } |
| |
| static RetainPtr<CFStringRef> textBreakLocalePreference() |
| { |
| return dynamic_cf_cast<CFStringRef>(adoptCF(CFPreferencesCopyValue(CFSTR("AppleTextBreakLocale"), |
| kCFPreferencesAnyApplication, kCFPreferencesCurrentUser, kCFPreferencesAnyHost))); |
| } |
| |
| static RetainPtr<CFStringRef> topLanguagePreference() |
| { |
| auto languagesArray = adoptCF(CFLocaleCopyPreferredLanguages()); |
| if (!languagesArray || !CFArrayGetCount(languagesArray.get())) |
| return nullptr; |
| return static_cast<CFStringRef>(CFArrayGetValueAtIndex(languagesArray.get(), 0)); |
| } |
| |
| static LocaleIDBuffer localeIDInBuffer(CFStringRef string) |
| { |
| // Empty string means "root locale", and is what we use if we can't get a preference. |
| LocaleIDBuffer buffer; |
| if (!string || !CFStringGetCString(string, buffer.data(), buffer.size(), kCFStringEncodingASCII)) |
| buffer.front() = '\0'; |
| return buffer; |
| } |
| |
| const char* currentSearchLocaleID() |
| { |
| static const auto buffer = localeIDInBuffer(topLanguagePreference().get()); |
| return buffer.data(); |
| } |
| |
| static RetainPtr<CFStringRef> textBreakLocale() |
| { |
| // If there is no text break locale, use the top language preference. |
| auto locale = textBreakLocalePreference(); |
| if (!locale) |
| return topLanguagePreference(); |
| if (auto canonicalLocale = adoptCF(CFLocaleCreateCanonicalLanguageIdentifierFromString(kCFAllocatorDefault, locale.get()))) |
| return canonicalLocale; |
| return locale; |
| } |
| |
| const char* currentTextBreakLocaleID() |
| { |
| static const auto buffer = localeIDInBuffer(textBreakLocale().get()); |
| return buffer.data(); |
| } |
| |
| } |