TextBreakIteratorInternalICUCocoa.cpp [plain text]
#include "config.h"
#include <wtf/text/TextBreakIteratorInternalICU.h>
#include <array>
#include <wtf/RetainPtr.h>
#include <wtf/text/TextBreakIterator.h>
namespace WTF {
using LocaleIDBuffer = std::array<char, 33>;
static 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()
{
auto locale = adoptCF(CFPreferencesCopyValue(CFSTR("AppleTextBreakLocale"),
kCFPreferencesAnyApplication, kCFPreferencesCurrentUser, kCFPreferencesAnyHost));
if (!locale || CFGetTypeID(locale.get()) != CFStringGetTypeID())
return nullptr;
return static_cast<CFStringRef>(locale.get());
}
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)
{
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()
{
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();
}
}