| // Copyright 2018 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_INTL_SUPPORT |
| #error Internationalization is expected to be enabled. |
| #endif // V8_INTL_SUPPORT |
| |
| #include "src/objects/js-locale.h" |
| |
| #include <map> |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "src/api.h" |
| #include "src/global-handles.h" |
| #include "src/heap/factory.h" |
| #include "src/isolate.h" |
| #include "src/objects-inl.h" |
| #include "src/objects/intl-objects.h" |
| #include "src/objects/js-locale-inl.h" |
| #include "unicode/locid.h" |
| #include "unicode/uloc.h" |
| #include "unicode/unistr.h" |
| #include "unicode/uvernum.h" |
| #include "unicode/uversion.h" |
| |
| #if U_ICU_VERSION_MAJOR_NUM >= 59 |
| #include "unicode/char16ptr.h" |
| #endif |
| |
| namespace v8 { |
| namespace internal { |
| |
| namespace { |
| |
| struct OptionData { |
| const char* name; |
| const char* key; |
| const std::vector<const char*>* possible_values; |
| bool is_bool_value; |
| }; |
| |
| // Inserts tags from options into locale string. |
| Maybe<bool> InsertOptionsIntoLocale(Isolate* isolate, |
| Handle<JSReceiver> options, |
| char* icu_locale) { |
| CHECK(isolate); |
| CHECK(icu_locale); |
| |
| static std::vector<const char*> hour_cycle_values = {"h11", "h12", "h23", |
| "h24"}; |
| static std::vector<const char*> case_first_values = {"upper", "lower", |
| "false"}; |
| static std::vector<const char*> empty_values = {}; |
| static const std::array<OptionData, 6> kOptionToUnicodeTagMap = { |
| {{"calendar", "ca", &empty_values, false}, |
| {"collation", "co", &empty_values, false}, |
| {"hourCycle", "hc", &hour_cycle_values, false}, |
| {"caseFirst", "kf", &case_first_values, false}, |
| {"numeric", "kn", &empty_values, true}, |
| {"numberingSystem", "nu", &empty_values, false}}}; |
| |
| // TODO(cira): Pass in values as per the spec to make this to be |
| // spec compliant. |
| |
| for (const auto& option_to_bcp47 : kOptionToUnicodeTagMap) { |
| std::unique_ptr<char[]> value_str = nullptr; |
| bool value_bool = false; |
| Maybe<bool> maybe_found = |
| option_to_bcp47.is_bool_value |
| ? Intl::GetBoolOption(isolate, options, option_to_bcp47.name, |
| "locale", &value_bool) |
| : Intl::GetStringOption(isolate, options, option_to_bcp47.name, |
| *(option_to_bcp47.possible_values), |
| "locale", &value_str); |
| if (maybe_found.IsNothing()) return maybe_found; |
| |
| // TODO(cira): Use fallback value if value is not found to make |
| // this spec compliant. |
| if (!maybe_found.FromJust()) continue; |
| |
| if (option_to_bcp47.is_bool_value) { |
| value_str = value_bool ? isolate->factory()->true_string()->ToCString() |
| : isolate->factory()->false_string()->ToCString(); |
| } |
| DCHECK_NOT_NULL(value_str.get()); |
| |
| // Convert bcp47 key and value into legacy ICU format so we can use |
| // uloc_setKeywordValue. |
| const char* key = uloc_toLegacyKey(option_to_bcp47.key); |
| DCHECK_NOT_NULL(key); |
| |
| // Overwrite existing, or insert new key-value to the locale string. |
| const char* value = uloc_toLegacyType(key, value_str.get()); |
| UErrorCode status = U_ZERO_ERROR; |
| if (value) { |
| // TODO(cira): ICU puts artificial limit on locale length, while BCP47 |
| // doesn't. Switch to C++ API when it's ready. |
| // Related ICU bug - https://ssl.icu-project.org/trac/ticket/13417. |
| uloc_setKeywordValue(key, value, icu_locale, ULOC_FULLNAME_CAPACITY, |
| &status); |
| if (U_FAILURE(status) || status == U_STRING_NOT_TERMINATED_WARNING) { |
| return Just(false); |
| } |
| } else { |
| return Just(false); |
| } |
| } |
| |
| return Just(true); |
| } |
| |
| // Fills in the JSLocale object slots with Unicode tag/values. |
| bool PopulateLocaleWithUnicodeTags(Isolate* isolate, const char* icu_locale, |
| Handle<JSLocale> locale_holder) { |
| CHECK(isolate); |
| CHECK(icu_locale); |
| |
| Factory* factory = isolate->factory(); |
| |
| UErrorCode status = U_ZERO_ERROR; |
| UEnumeration* keywords = uloc_openKeywords(icu_locale, &status); |
| if (!keywords) return true; |
| |
| char value[ULOC_FULLNAME_CAPACITY]; |
| while (const char* keyword = uenum_next(keywords, nullptr, &status)) { |
| uloc_getKeywordValue(icu_locale, keyword, value, ULOC_FULLNAME_CAPACITY, |
| &status); |
| if (U_FAILURE(status)) { |
| status = U_ZERO_ERROR; |
| continue; |
| } |
| |
| // Ignore those we don't recognize - spec allows that. |
| const char* bcp47_key = uloc_toUnicodeLocaleKey(keyword); |
| if (bcp47_key) { |
| const char* bcp47_value = uloc_toUnicodeLocaleType(bcp47_key, value); |
| if (bcp47_value) { |
| Handle<String> bcp47_handle = |
| factory->NewStringFromAsciiChecked(bcp47_value); |
| if (strncmp(bcp47_key, "kn", 2) == 0) { |
| locale_holder->set_numeric(*bcp47_handle); |
| } else if (strncmp(bcp47_key, "ca", 2) == 0) { |
| locale_holder->set_calendar(*bcp47_handle); |
| } else if (strncmp(bcp47_key, "kf", 2) == 0) { |
| locale_holder->set_case_first(*bcp47_handle); |
| } else if (strncmp(bcp47_key, "co", 2) == 0) { |
| locale_holder->set_collation(*bcp47_handle); |
| } else if (strncmp(bcp47_key, "hc", 2) == 0) { |
| locale_holder->set_hour_cycle(*bcp47_handle); |
| } else if (strncmp(bcp47_key, "nu", 2) == 0) { |
| locale_holder->set_numbering_system(*bcp47_handle); |
| } |
| } |
| } |
| } |
| |
| uenum_close(keywords); |
| |
| return true; |
| } |
| } // namespace |
| |
| MaybeHandle<JSLocale> JSLocale::InitializeLocale(Isolate* isolate, |
| Handle<JSLocale> locale_holder, |
| Handle<String> locale, |
| Handle<JSReceiver> options) { |
| static const char* const kMethod = "Intl.Locale"; |
| v8::Isolate* v8_isolate = reinterpret_cast<v8::Isolate*>(isolate); |
| UErrorCode status = U_ZERO_ERROR; |
| |
| // Get ICU locale format, and canonicalize it. |
| char icu_result[ULOC_FULLNAME_CAPACITY]; |
| char icu_canonical[ULOC_FULLNAME_CAPACITY]; |
| |
| v8::String::Utf8Value bcp47_locale(v8_isolate, v8::Utils::ToLocal(locale)); |
| if (bcp47_locale.length() == 0) return MaybeHandle<JSLocale>(); |
| |
| int icu_length = uloc_forLanguageTag( |
| *bcp47_locale, icu_result, ULOC_FULLNAME_CAPACITY, nullptr, &status); |
| |
| if (U_FAILURE(status) || status == U_STRING_NOT_TERMINATED_WARNING || |
| icu_length == 0) { |
| THROW_NEW_ERROR( |
| isolate, |
| NewRangeError(MessageTemplate::kLocaleBadParameters, |
| isolate->factory()->NewStringFromAsciiChecked(kMethod), |
| locale_holder), |
| JSLocale); |
| return MaybeHandle<JSLocale>(); |
| } |
| |
| Maybe<bool> error = InsertOptionsIntoLocale(isolate, options, icu_result); |
| MAYBE_RETURN(error, MaybeHandle<JSLocale>()); |
| if (!error.FromJust()) { |
| THROW_NEW_ERROR( |
| isolate, |
| NewRangeError(MessageTemplate::kLocaleBadParameters, |
| isolate->factory()->NewStringFromAsciiChecked(kMethod), |
| locale_holder), |
| JSLocale); |
| return MaybeHandle<JSLocale>(); |
| } |
| DCHECK(error.FromJust()); |
| |
| uloc_canonicalize(icu_result, icu_canonical, ULOC_FULLNAME_CAPACITY, &status); |
| if (U_FAILURE(status) || status == U_STRING_NOT_TERMINATED_WARNING) { |
| THROW_NEW_ERROR( |
| isolate, |
| NewRangeError(MessageTemplate::kLocaleBadParameters, |
| isolate->factory()->NewStringFromAsciiChecked(kMethod), |
| locale_holder), |
| JSLocale); |
| return MaybeHandle<JSLocale>(); |
| } |
| |
| if (!PopulateLocaleWithUnicodeTags(isolate, icu_canonical, locale_holder)) { |
| THROW_NEW_ERROR( |
| isolate, |
| NewRangeError(MessageTemplate::kLocaleBadParameters, |
| isolate->factory()->NewStringFromAsciiChecked(kMethod), |
| locale_holder), |
| JSLocale); |
| return MaybeHandle<JSLocale>(); |
| } |
| |
| // Extract language, script and region parts. |
| char icu_language[ULOC_LANG_CAPACITY]; |
| uloc_getLanguage(icu_canonical, icu_language, ULOC_LANG_CAPACITY, &status); |
| |
| char icu_script[ULOC_SCRIPT_CAPACITY]; |
| uloc_getScript(icu_canonical, icu_script, ULOC_SCRIPT_CAPACITY, &status); |
| |
| char icu_region[ULOC_COUNTRY_CAPACITY]; |
| uloc_getCountry(icu_canonical, icu_region, ULOC_COUNTRY_CAPACITY, &status); |
| |
| if (U_FAILURE(status) || status == U_STRING_NOT_TERMINATED_WARNING) { |
| THROW_NEW_ERROR( |
| isolate, |
| NewRangeError(MessageTemplate::kLocaleBadParameters, |
| isolate->factory()->NewStringFromAsciiChecked(kMethod), |
| locale_holder), |
| JSLocale); |
| return MaybeHandle<JSLocale>(); |
| } |
| |
| Factory* factory = isolate->factory(); |
| |
| // NOTE: One shouldn't use temporary handles, because they can go out of |
| // scope and be garbage collected before properly assigned. |
| // DON'T DO THIS: locale_holder->set_language(*f->NewStringAscii...); |
| Handle<String> language = factory->NewStringFromAsciiChecked(icu_language); |
| locale_holder->set_language(*language); |
| |
| if (strlen(icu_script) != 0) { |
| Handle<String> script = factory->NewStringFromAsciiChecked(icu_script); |
| locale_holder->set_script(*script); |
| } |
| |
| if (strlen(icu_region) != 0) { |
| Handle<String> region = factory->NewStringFromAsciiChecked(icu_region); |
| locale_holder->set_region(*region); |
| } |
| |
| char icu_base_name[ULOC_FULLNAME_CAPACITY]; |
| uloc_getBaseName(icu_canonical, icu_base_name, ULOC_FULLNAME_CAPACITY, |
| &status); |
| // We need to convert it back to BCP47. |
| char bcp47_result[ULOC_FULLNAME_CAPACITY]; |
| uloc_toLanguageTag(icu_base_name, bcp47_result, ULOC_FULLNAME_CAPACITY, true, |
| &status); |
| if (U_FAILURE(status) || status == U_STRING_NOT_TERMINATED_WARNING) { |
| THROW_NEW_ERROR( |
| isolate, |
| NewRangeError(MessageTemplate::kLocaleBadParameters, |
| isolate->factory()->NewStringFromAsciiChecked(kMethod), |
| locale_holder), |
| JSLocale); |
| return MaybeHandle<JSLocale>(); |
| } |
| Handle<String> base_name = factory->NewStringFromAsciiChecked(bcp47_result); |
| locale_holder->set_base_name(*base_name); |
| |
| // Produce final representation of the locale string, for toString(). |
| uloc_toLanguageTag(icu_canonical, bcp47_result, ULOC_FULLNAME_CAPACITY, true, |
| &status); |
| if (U_FAILURE(status) || status == U_STRING_NOT_TERMINATED_WARNING) { |
| THROW_NEW_ERROR( |
| isolate, |
| NewRangeError(MessageTemplate::kLocaleBadParameters, |
| isolate->factory()->NewStringFromAsciiChecked(kMethod), |
| locale_holder), |
| JSLocale); |
| return MaybeHandle<JSLocale>(); |
| } |
| Handle<String> locale_handle = |
| factory->NewStringFromAsciiChecked(bcp47_result); |
| locale_holder->set_locale(*locale_handle); |
| |
| return locale_holder; |
| } |
| |
| namespace { |
| |
| Handle<String> MorphLocale(Isolate* isolate, String* input, |
| int32_t (*morph_func)(const char*, char*, int32_t, |
| UErrorCode*)) { |
| Factory* factory = isolate->factory(); |
| char localeBuffer[ULOC_FULLNAME_CAPACITY]; |
| UErrorCode status = U_ZERO_ERROR; |
| DCHECK_NOT_NULL(morph_func); |
| int32_t length = (*morph_func)(input->ToCString().get(), localeBuffer, |
| ULOC_FULLNAME_CAPACITY, &status); |
| DCHECK(U_SUCCESS(status)); |
| DCHECK_GT(length, 0); |
| std::string locale(localeBuffer, length); |
| std::replace(locale.begin(), locale.end(), '_', '-'); |
| return factory->NewStringFromAsciiChecked(locale.c_str()); |
| } |
| |
| } // namespace |
| |
| Handle<String> JSLocale::Maximize(Isolate* isolate, String* locale) { |
| return MorphLocale(isolate, locale, uloc_addLikelySubtags); |
| } |
| |
| Handle<String> JSLocale::Minimize(Isolate* isolate, String* locale) { |
| return MorphLocale(isolate, locale, uloc_minimizeSubtags); |
| } |
| |
| } // namespace internal |
| } // namespace v8 |
