1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_INTL_SUPPORT 6 #error Internationalization is expected to be enabled. 7 #endif // V8_INTL_SUPPORT 8 9 #ifndef V8_INTL_H_ 10 #define V8_INTL_H_ 11 12 #include <string> 13 14 #include "src/base/timezone-cache.h" 15 #include "src/objects.h" 16 #include "src/objects/string.h" 17 #include "unicode/uversion.h" 18 19 namespace U_ICU_NAMESPACE { 20 class TimeZone; 21 } 22 23 namespace v8 { 24 namespace internal { 25 26 enum class IcuService { 27 kBreakIterator, 28 kCollator, 29 kDateFormat, 30 kNumberFormat, 31 kPluralRules, 32 kResourceBundle, 33 kRelativeDateTimeFormatter, 34 kListFormatter 35 }; 36 37 const UChar* GetUCharBufferFromFlat(const String::FlatContent& flat, 38 std::unique_ptr<uc16[]>* dest, 39 int32_t length); 40 MaybeHandle<String> LocaleConvertCase(Handle<String> s, Isolate* isolate, 41 bool is_to_upper, const char* lang); 42 MaybeHandle<String> ConvertToLower(Handle<String> s, Isolate* isolate); 43 MaybeHandle<String> ConvertToUpper(Handle<String> s, Isolate* isolate); 44 MaybeHandle<String> ConvertCase(Handle<String> s, bool is_upper, 45 Isolate* isolate); 46 47 V8_WARN_UNUSED_RESULT String* ConvertOneByteToLower(String* src, String* dst); 48 49 const uint8_t* ToLatin1LowerTable(); 50 51 // ICUTimezoneCache calls out to ICU for TimezoneCache 52 // functionality in a straightforward way. 53 class ICUTimezoneCache : public base::TimezoneCache { 54 public: 55 ICUTimezoneCache(); 56 57 ~ICUTimezoneCache() override; 58 59 const char* LocalTimezone(double time_ms) override; 60 61 double DaylightSavingsOffset(double time_ms) override; 62 63 double LocalTimeOffset(double time_ms, bool is_utc) override; 64 65 void Clear() override; 66 67 private: 68 icu::TimeZone* GetTimeZone(); 69 70 bool GetOffsets(double time_ms, bool is_utc, int32_t* raw_offset, 71 int32_t* dst_offset); 72 73 icu::TimeZone* timezone_; 74 75 std::string timezone_name_; 76 std::string dst_timezone_name_; 77 }; 78 79 } // namespace internal 80 } // namespace v8 81 82 #endif // V8_INTL_H_ 83