// Copyright (c) 2011 The Chromium 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 BASE_I18N_ICU_UTIL_H_ #define BASE_I18N_ICU_UTIL_H_ #include #include "base/files/memory_mapped_file.h" #include "base/i18n/base_i18n_export.h" #include "build/build_config.h" #include "build/chromeos_buildflags.h" #if BUILDFLAG(IS_CHROMEOS_LACROS) #include "icu_mergeable_data_file.h" #endif // BUILDFLAG(IS_CHROMEOS_LACROS) #define ICU_UTIL_DATA_FILE 0 #define ICU_UTIL_DATA_STATIC 1 namespace base::i18n { #if !BUILDFLAG(IS_NACL) // Call this function to load ICU's data tables for the current process. This // function should be called before ICU is used. BASE_I18N_EXPORT bool InitializeICU(); #if ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE // In ChromeOS, two versions of icudtl.dat are shipped separately with Ash and // Lacros. Although the two files can differ, there's a big overlap in content. // We can take advantage of that and save memory by scanning the two files and // merging the pages that are in common. #if BUILDFLAG(IS_CHROMEOS_LACROS) using IcuDataFile = IcuMergeableDataFile; #else // Outside of Lacros, we simply memory map the ICU data file. using IcuDataFile = MemoryMappedFile; #endif // BUILDFLAG(IS_CHROMEOS_LACROS) // Returns the PlatformFile and Region that was initialized by InitializeICU(). // Use with InitializeICUWithFileDescriptor(). BASE_I18N_EXPORT PlatformFile GetIcuDataFileHandle(MemoryMappedFile::Region* out_region); // Loads ICU data file from file descriptor passed by browser process to // initialize ICU in render processes. BASE_I18N_EXPORT bool InitializeICUWithFileDescriptor( PlatformFile data_fd, const MemoryMappedFile::Region& data_region); BASE_I18N_EXPORT void ResetGlobalsForTesting(); #if BUILDFLAG(IS_FUCHSIA) // Overrides the directory used by ICU for external time zone data. BASE_I18N_EXPORT void SetIcuTimeZoneDataDirForTesting(const char* dir); #endif // BUILDFLAG(IS_FUCHSIA) #endif // ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE // In a test binary, initialize functions might be called twice. BASE_I18N_EXPORT void AllowMultipleInitializeCallsForTesting(); #endif // !BUILDFLAG(IS_NACL) } // namespace base::i18n #endif // BASE_I18N_ICU_UTIL_H_