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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.
// This file declares extension specific l10n utils.


#include <set>
#include <string>
#include <vector>

#include "webkit/glue/resource_type.h"

class DictionaryValue;
class Extension;
class ExtensionMessageBundle;
class FilePath;
class GURL;
class ResourceDispatcherHostRequestInfo;
struct ExtensionInfo;

namespace extension_l10n_util {

// Set the locale for this process to a fixed value, rather than using the
// normal file-based lookup mechanisms. This is used to set the locale inside
// the sandboxed utility process, where file reading is not allowed.
void SetProcessLocale(const std::string& locale);

// Returns default locale in form "en-US" or "sr" or empty string if
// "default_locale" section was not defined in the manifest.json file.
std::string GetDefaultLocaleFromManifest(const DictionaryValue& manifest,
                                         std::string* error);

// Returns true iff the extension was localized, and the current locale
// doesn't match the locale written into info.extension_manifest.
bool ShouldRelocalizeManifest(const ExtensionInfo& info);

// Localize extension name, description, browser_action and other fields
// in the manifest.
bool LocalizeManifest(const ExtensionMessageBundle& messages,
                      DictionaryValue* manifest,
                      std::string* error);

// Load message catalogs, localize manifest and attach message bundle to the
// extension.
bool LocalizeExtension(Extension* extension,
                       DictionaryValue* manifest,
                       std::string* error);

// Adds locale_name to the extension if it's in chrome_locales, and
// if messages file is present (we don't check content of messages file here).
// Returns false if locale_name was not found in chrome_locales, and sets
// error with locale_name.
// If file name starts with . return true (helps testing extensions under svn).
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);

// Converts all - into _, to be consistent with ICU and file system names.
std::string NormalizeLocale(const std::string& locale);

// Returns normalized current locale, or default locale - en_US.
std::string CurrentLocaleOrDefault();

// Produce a vector of parent locales for given locale.
// It includes the current locale in the result.
// sr_Cyrl_RS generates sr_Cyrl_RS, sr_Cyrl and sr.
void GetParentLocales(const std::string& current_locale,
                      std::vector<std::string>* parent_locales);

// Extends list of Chrome locales to them and their parents, so we can do
// proper fallback.
void GetAllLocales(std::set<std::string>* all_locales);

// Adds valid locales to the extension.
// 1. Do nothing if _locales directory is missing (not an error).
// 2. Get list of Chrome locales.
// 3. Enumerate all subdirectories of _locales directory.
// 4. Intersect both lists, and add intersection to the extension.
// Returns false if any of supplied locales don't match chrome list of locales.
// Fills out error with offending locale name.
bool GetValidLocales(const FilePath& locale_path,
                     std::set<std::string>* locales,
                     std::string* error);

// Loads messages file for default locale, and application locales (application
// locales doesn't have to exist). Application locale is current locale and its
// parents.
// Returns message bundle if it can load default locale messages file, and all
// messages are valid, else returns NULL and sets error.
ExtensionMessageBundle* LoadMessageCatalogs(
    const FilePath& locale_path,
    const std::string& default_locale,
    const std::string& app_locale,
    const std::set<std::string>& valid_locales,
    std::string* error);

// Returns true if directory has "." in the name (for .svn) or if it doesn't
// belong to Chrome locales.
// |locales_path| is extension_id/_locales
// |locale_path| is extension_id/_locales/xx
// |all_locales| is a set of all valid Chrome locales.
bool ShouldSkipValidation(const FilePath& locales_path,
                          const FilePath& locale_path,
                          const std::set<std::string>& all_locales);

}  // namespace extension_l10n_util


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