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- // 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 <stdint.h>
- #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_
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