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// Copyright (c) 2009 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.
#include "base/i18n/icu_util.h"
#include "build/build_config.h"
#if defined(OS_WIN)
#include <windows.h>
#endif
#include <string>
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "base/string_util.h"
#include "base/sys_string_conversions.h"
#include "unicode/putil.h"
#include "unicode/udata.h"
#define ICU_UTIL_DATA_FILE 0
#define ICU_UTIL_DATA_SHARED 1
#define ICU_UTIL_DATA_STATIC 2
#ifndef ICU_UTIL_DATA_IMPL
#if defined(OS_WIN)
#define ICU_UTIL_DATA_IMPL ICU_UTIL_DATA_SHARED
#else
#define ICU_UTIL_DATA_IMPL ICU_UTIL_DATA_STATIC
#endif
#endif // ICU_UTIL_DATA_IMPL
#if defined(OS_WIN)
#define ICU_UTIL_DATA_SYMBOL "icudt" U_ICU_VERSION_SHORT "_dat"
#define ICU_UTIL_DATA_SHARED_MODULE_NAME "icudt" U_ICU_VERSION_SHORT ".dll"
#endif
namespace icu_util {
bool Initialize() {
#ifndef NDEBUG
// Assert that we are not called more than once. Even though calling this
// function isn't harmful (ICU can handle it), being called twice probably
// indicates a programming error.
static bool called_once = false;
DCHECK(!called_once);
called_once = true;
#endif
#if (ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_SHARED)
// We expect to find the ICU data module alongside the current module.
FilePath data_path;
PathService::Get(base::DIR_MODULE, &data_path);
data_path = data_path.AppendASCII(ICU_UTIL_DATA_SHARED_MODULE_NAME);
HMODULE module = LoadLibrary(data_path.value().c_str());
if (!module) {
LOG(ERROR) << "Failed to load " << ICU_UTIL_DATA_SHARED_MODULE_NAME;
return false;
}
FARPROC addr = GetProcAddress(module, ICU_UTIL_DATA_SYMBOL);
if (!addr) {
LOG(ERROR) << ICU_UTIL_DATA_SYMBOL << ": not found in "
<< ICU_UTIL_DATA_SHARED_MODULE_NAME;
return false;
}
UErrorCode err = U_ZERO_ERROR;
udata_setCommonData(reinterpret_cast<void*>(addr), &err);
return err == U_ZERO_ERROR;
#elif (ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_STATIC)
// Mac/Linux bundle the ICU data in.
return true;
#elif (ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE)
// For now, expect the data file to be alongside the executable.
// This is sufficient while we work on unit tests, but will eventually
// likely live in a data directory.
FilePath data_path;
bool path_ok = PathService::Get(base::DIR_EXE, &data_path);
DCHECK(path_ok);
u_setDataDirectory(data_path.value().c_str());
// Only look for the packaged data file;
// the default behavior is to look for individual files.
UErrorCode err = U_ZERO_ERROR;
udata_setFileAccess(UDATA_ONLY_PACKAGES, &err);
return err == U_ZERO_ERROR;
#endif
}
} // namespace icu_util
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