static jstring ICU_languageTagForLocale(JNIEnv* env, jclass, jstring javaLocaleId) {
ScopedUtfChars localeID(env, javaLocaleId);
// In most common cases, the BCP 47 tag will be the same size as the ICU
// locale ID
const size_t initialBufferSize = localeID.size() + 1;
std::vector<char> buffer(initialBufferSize);
UErrorCode status = U_ZERO_ERROR;
const size_t outputLength = uloc_toLanguageTag(localeID.c_str(),
&buffer[0], buffer.size(), false /* strict */, &status);
if (status == U_BUFFER_OVERFLOW_ERROR) {
buffer.resize(outputLength + 1);
status = U_ZERO_ERROR;
uloc_toLanguageTag(localeID.c_str(), &buffer[0], buffer.size(),
false /* strict */, &status);
}
if (status == U_STRING_NOT_TERMINATED_WARNING) {
buffer.resize(buffer.size() + 1);
buffer[buffer.size() -1] = '\0';
}
if (maybeThrowIcuException(env, "ICU::languageTagForLocale", status)) {
return NULL;
}
return env->NewStringUTF(&buffer[0]);
}
static jstring ICU_addLikelySubtags(JNIEnv* env, jclass, jstring javaLocaleName) {
UErrorCode status = U_ZERO_ERROR;
ScopedUtfChars localeID(env, javaLocaleName);
char maximizedLocaleID[ULOC_FULLNAME_CAPACITY];
uloc_addLikelySubtags(localeID.c_str(), maximizedLocaleID, sizeof(maximizedLocaleID), &status);
if (U_FAILURE(status)) {
return javaLocaleName;
}
return env->NewStringUTF(maximizedLocaleID);
}
extern "C" jstring Java_libcore_icu_ICU_getScript(JNIEnv* env, jclass, jstring javaLocale) {
UErrorCode status = U_ZERO_ERROR;
ScopedUtfChars localeID(env, javaLocale);
char script[ULOC_SCRIPT_CAPACITY];
uloc_getScript(localeID.c_str(), script, sizeof(script), &status);
if (U_FAILURE(status)) {
return NULL;
}
return env->NewStringUTF(script);
}
