1 files changed, 99 insertions, 0 deletions
diff --git a/base/i18n/icu_util.cc b/base/i18n/icu_util.cc
new file mode 100644
index 0000000..6239a01
--- /dev/null
+++ b/base/i18n/icu_util.cc
@@ -0,0 +1,99 @@
+// 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
+#elif defined(OS_MACOSX)
+#define ICU_UTIL_DATA_IMPL ICU_UTIL_DATA_STATIC
+#elif defined(OS_LINUX)
+#define ICU_UTIL_DATA_IMPL ICU_UTIL_DATA_FILE
+#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.
+  std::wstring data_path;
+  PathService::Get(base::DIR_MODULE, &data_path);
+  file_util::AppendToPath(&data_path,
+                          ASCIIToWide(ICU_UTIL_DATA_SHARED_MODULE_NAME));
+
+  HMODULE module = LoadLibrary(data_path.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 bundles 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