This change enables Chrome to load locale information for the extension. It d...

chrome/browser/extensions/extension_l10n_util.cc

+// 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 "chrome/browser/extensions/extension_l10n_util.h"
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "app/l10n_util.h"
+#include "base/file_util.h"
+#include "base/string_util.h"
+#include "base/values.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_constants.h"
+
+namespace keys = extension_manifest_keys;
+
+namespace extension_l10n_util {
+
+bool ValidateDefaultLocale(const Extension* extension) {
+  std::string default_locale = extension->default_locale();
+
+  if (extension->supported_locales().find(default_locale) !=
+        extension->supported_locales().end()) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+
+bool AddLocale(const std::set<std::string>& chrome_locales,
+               const FilePath& locale_folder,
+               Extension* extension,
+               std::string* locale_name,
+               std::string* error) {
+  // Normalize underscores to hyphens because that's what our locale files use.
+  std::replace(locale_name->begin(), locale_name->end(), '_', '-');
+  if (chrome_locales.find(*locale_name) == chrome_locales.end()) {
+    // Fail if there is an extension locale that's not in the Chrome list.
+    *error = StringPrintf("Supplied locale %s is not supported.",
+                          locale_name->c_str());
+    return false;
+  }
+  // Check if messages file is actually present (but don't check content).
+  if (file_util::PathExists(
+         locale_folder.AppendASCII(Extension::kMessagesFilename))) {
+    extension->AddSupportedLocale(*locale_name);
+  } else {
+    *error = StringPrintf("Catalog file is missing for locale %s.",
+                          locale_name->c_str());
+    return false;
+  }
+
+  return true;
+}
+
+bool AddValidLocales(const FilePath& locale_path,
+                     Extension* extension,
+                     std::string* error) {
+  // Get available chrome locales as a set.
+  const std::vector<std::string>& available_locales =
+      l10n_util::GetAvailableLocales();
+  static std::set<std::string> chrome_locales(available_locales.begin(),
+                                              available_locales.end());
+  // Enumerate all supplied locales in the extension.
+  file_util::FileEnumerator locales(locale_path,
+                                    false,
+                                    file_util::FileEnumerator::DIRECTORIES);
+  FilePath locale_folder;
+  while (!(locale_folder = locales.Next()).empty()) {
+    std::string locale_name =
+        WideToASCII(locale_folder.BaseName().ToWStringHack());
+    if (!AddLocale(chrome_locales, locale_folder,
+                   extension, &locale_name, error)) {
+      return false;
+    }
+  }
+
+  if (extension->supported_locales().empty()) {
+    *error = extension_manifest_errors::kLocalesNoValidLocaleNamesListed;
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace extension_l10n_util