#include "config.h"
#include <wtf/Language.h>
#include <CoreFoundation/CoreFoundation.h>
#include <mutex>
#include <unicode/uloc.h>
#include <wtf/Assertions.h>
#include <wtf/Lock.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/RetainPtr.h>
#include <wtf/spi/cf/CFBundleSPI.h>
#include <wtf/text/WTFString.h>
namespace WTF {
static Lock preferredLanguagesMutex;
static Vector<String>& preferredLanguages()
{
static LazyNeverDestroyed<Vector<String>> languages;
static std::once_flag onceKey;
std::call_once(onceKey, [&] {
languages.construct();
});
return languages;
}
static String httpStyleLanguageCode(CFStringRef language)
{
RetainPtr<CFStringRef> preferredLanguageCode;
if (canMinimizeLanguages())
preferredLanguageCode = adoptCF(CFLocaleCreateCanonicalLanguageIdentifierFromString(kCFAllocatorDefault, language));
else {
SInt32 languageCode;
SInt32 regionCode;
SInt32 scriptCode;
CFStringEncoding stringEncoding;
CFBundleGetLocalizationInfoForLocalization(language, &languageCode, ®ionCode, &scriptCode, &stringEncoding);
preferredLanguageCode = adoptCF(CFBundleCopyLocalizationForLocalizationInfo(languageCode, regionCode, scriptCode, stringEncoding));
}
if (!preferredLanguageCode)
preferredLanguageCode = language;
auto mutableLanguageCode = adoptCF(CFStringCreateMutableCopy(kCFAllocatorDefault, 0, preferredLanguageCode.get()));
if (CFStringGetLength(mutableLanguageCode.get()) >= 3 && CFStringGetCharacterAtIndex(mutableLanguageCode.get(), 2) == '_')
CFStringReplace(mutableLanguageCode.get(), CFRangeMake(2, 1), CFSTR("-"));
CFStringLowercase(mutableLanguageCode.get(), nullptr);
return mutableLanguageCode.get();
}
#if PLATFORM(MAC)
static void languagePreferencesDidChange(CFNotificationCenterRef, void*, CFStringRef, const void*, CFDictionaryRef)
{
{
auto locker = holdLock(preferredLanguagesMutex);
preferredLanguages().clear();
}
languageDidChange();
}
#endif
Vector<String> platformUserPreferredLanguages()
{
#if PLATFORM(MAC)
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^ {
CFNotificationCenterAddObserver(CFNotificationCenterGetDistributedCenter(), nullptr, &languagePreferencesDidChange, CFSTR("AppleLanguagePreferencesChangedNotification"), nullptr, CFNotificationSuspensionBehaviorCoalesce);
});
#endif
auto locker = holdLock(preferredLanguagesMutex);
Vector<String>& userPreferredLanguages = preferredLanguages();
if (userPreferredLanguages.isEmpty()) {
RetainPtr<CFArrayRef> languages = adoptCF(CFLocaleCopyPreferredLanguages());
languages = minimizedLanguagesFromLanguages(languages.get());
CFIndex languageCount = CFArrayGetCount(languages.get());
if (!languageCount)
userPreferredLanguages.append("en");
else {
for (CFIndex i = 0; i < languageCount; i++)
userPreferredLanguages.append(httpStyleLanguageCode(static_cast<CFStringRef>(CFArrayGetValueAtIndex(languages.get(), i))));
}
}
Vector<String> userPreferredLanguagesCopy;
userPreferredLanguagesCopy.reserveInitialCapacity(userPreferredLanguages.size());
for (auto& language : userPreferredLanguages)
userPreferredLanguagesCopy.uncheckedAppend(language.isolatedCopy());
return userPreferredLanguagesCopy;
return Vector<String>();
}
}