1 files changed, 215 insertions, 0 deletions
diff --git a/chrome/common/extensions/extension_l10n_util.cc b/chrome/common/extensions/extension_l10n_util.cc
new file mode 100644
index 0000000..8ff7ec6
--- /dev/null
+++ b/chrome/common/extensions/extension_l10n_util.cc
@@ -0,0 +1,215 @@
+// 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/common/extensions/extension_l10n_util.h"
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "app/l10n_util.h"
+#include "base/file_util.h"
+#include "base/linked_ptr.h"
+#include "base/string_util.h"
+#include "base/values.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_constants.h"
+#include "chrome/common/extensions/extension_message_bundle.h"
+#include "chrome/common/json_value_serializer.h"
+
+namespace errors = extension_manifest_errors;
+namespace keys = extension_manifest_keys;
+
+static std::string* GetProcessLocale() {
+  static std::string locale;
+  return &locale;
+}
+
+namespace extension_l10n_util {
+
+void SetProcessLocale(const std::string& locale) {
+  *(GetProcessLocale()) = locale;
+}
+
+std::string GetDefaultLocaleFromManifest(const DictionaryValue& manifest,
+                                         std::string* error) {
+  std::string default_locale;
+  if (!manifest.GetString(keys::kDefaultLocale, &default_locale)) {
+    *error = errors::kInvalidDefaultLocale;
+    return "";
+  }
+
+  return default_locale;
+}
+
+bool AddLocale(const std::set<std::string>& chrome_locales,
+               const FilePath& locale_folder,
+               const std::string& locale_name,
+               std::set<std::string>* valid_locales,
+               std::string* error) {
+  // Accept name that starts with a . but don't add it to the list of supported
+  // locales.
+  if (locale_name.find(".") == 0)
+    return true;
+  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))) {
+    valid_locales->insert(locale_name);
+  } else {
+    *error = StringPrintf("Catalog file is missing for locale %s.",
+                          locale_name.c_str());
+    return false;
+  }
+
+  return true;
+}
+
+std::string NormalizeLocale(const std::string& locale) {
+  std::string normalized_locale(locale);
+  std::replace(normalized_locale.begin(), normalized_locale.end(), '-', '_');
+
+  return normalized_locale;
+}
+
+void GetParentLocales(const std::string& current_locale,
+                      std::vector<std::string>* parent_locales) {
+  std::string locale(NormalizeLocale(current_locale));
+
+  const int kNameCapacity = 256;
+  char parent[kNameCapacity];
+  base::strlcpy(parent, locale.c_str(), kNameCapacity);
+  parent_locales->push_back(parent);
+  UErrorCode err = U_ZERO_ERROR;
+  while (uloc_getParent(parent, parent, kNameCapacity, &err) > 0) {
+    if (err != U_ZERO_ERROR)
+      break;
+    parent_locales->push_back(parent);
+  }
+}
+
+// Extends list of Chrome locales to them and their parents, so we can do
+// proper fallback.
+static void GetAllLocales(std::set<std::string>* all_locales) {
+  const std::vector<std::string>& available_locales =
+      l10n_util::GetAvailableLocales();
+  // Add all parents of the current locale to the available locales set.
+  // I.e. for sr_Cyrl_RS we add sr_Cyrl_RS, sr_Cyrl and sr.
+  for (size_t i = 0; i < available_locales.size(); ++i) {
+    std::vector<std::string> result;
+    GetParentLocales(available_locales[i], &result);
+    all_locales->insert(result.begin(), result.end());
+  }
+}
+
+bool GetValidLocales(const FilePath& locale_path,
+                     std::set<std::string>* valid_locales,
+                     std::string* error) {
+  static std::set<std::string> chrome_locales;
+  GetAllLocales(&chrome_locales);
+
+  // 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,
+                   locale_name,
+                   valid_locales,
+                   error)) {
+      return false;
+    }
+  }
+
+  if (valid_locales->empty()) {
+    *error = extension_manifest_errors::kLocalesNoValidLocaleNamesListed;
+    return false;
+  }
+
+  return true;
+}
+
+// Loads contents of the messages file for given locale. If file is not found,
+// or there was parsing error we return NULL and set |error|.
+// Caller owns the returned object.
+static DictionaryValue* LoadMessageFile(const FilePath& locale_path,
+                                        const std::string& locale,
+                                        std::string* error) {
+
+  std::string extension_locale = locale;
+  FilePath file = locale_path.AppendASCII(extension_locale)
+      .AppendASCII(Extension::kMessagesFilename);
+  JSONFileValueSerializer messages_serializer(file);
+  Value *dictionary = messages_serializer.Deserialize(error);
+  if (!dictionary && error->empty()) {
+    // JSONFileValueSerializer just returns NULL if file cannot be found. It
+    // doesn't set the error, so we have to do it.
+    *error = StringPrintf("Catalog file is missing for locale %s.",
+                          extension_locale.c_str());
+  }
+
+  return static_cast<DictionaryValue*>(dictionary);
+}
+
+ExtensionMessageBundle* LoadMessageCatalogs(
+    const FilePath& locale_path,
+    const std::string& default_locale,
+    const std::string& application_locale,
+    const std::set<std::string>& valid_locales,
+    std::string* error) {
+  // Order locales to load as current_locale, first_parent, ..., default_locale.
+  std::vector<std::string> all_fallback_locales;
+  if (!application_locale.empty() && application_locale != default_locale)
+    GetParentLocales(application_locale, &all_fallback_locales);
+  all_fallback_locales.push_back(default_locale);
+
+  std::vector<linked_ptr<DictionaryValue> > catalogs;
+  for (size_t i = 0; i < all_fallback_locales.size(); ++i) {
+    // Skip all parent locales that are not supplied.
+    if (valid_locales.find(all_fallback_locales[i]) == valid_locales.end())
+      continue;
+    linked_ptr<DictionaryValue> catalog(
+      LoadMessageFile(locale_path, all_fallback_locales[i], error));
+    if (!catalog.get()) {
+      // If locale is valid, but messages.json is corrupted or missing, return
+      // an error.
+      return false;
+    } else {
+      catalogs.push_back(catalog);
+    }
+  }
+
+  return ExtensionMessageBundle::Create(catalogs, error);
+}
+
+void GetL10nRelativePaths(const FilePath& relative_resource_path,
+                          std::vector<FilePath>* l10n_paths) {
+  DCHECK(NULL != l10n_paths);
+
+  std::string* current_locale = GetProcessLocale();
+  if (current_locale->empty())
+    *current_locale = l10n_util::GetApplicationLocale(L"");
+
+  std::vector<std::string> locales;
+  GetParentLocales(*current_locale, &locales);
+
+  FilePath locale_relative_path;
+  for (size_t i = 0; i < locales.size(); ++i) {
+    l10n_paths->push_back(locale_relative_path
+        .AppendASCII(Extension::kLocaleFolder)
+        .AppendASCII(locales[i])
+        .Append(relative_resource_path));
+  }
+}
+
+}  // namespace extension_l10n_util