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