| // Copyright (c) 2012 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/api/i18n/i18n_api.h" |
| |
| #include <algorithm> |
| #include <string> |
| #include <vector> |
| |
| #include "base/lazy_instance.h" |
| #include "base/prefs/pref_service.h" |
| #include "base/strings/string_piece.h" |
| #include "base/strings/string_split.h" |
| #include "chrome/browser/profiles/profile.h" |
| #include "chrome/common/extensions/api/i18n.h" |
| #include "chrome/common/pref_names.h" |
| |
| namespace GetAcceptLanguages = extensions::api::i18n::GetAcceptLanguages; |
| |
| namespace extensions { |
| |
| namespace { |
| |
| // Errors. |
| static const char kEmptyAcceptLanguagesError[] = "accept-languages is empty."; |
| |
| } |
| |
| bool I18nGetAcceptLanguagesFunction::RunImpl() { |
| std::string accept_languages = |
| GetProfile()->GetPrefs()->GetString(prefs::kAcceptLanguages); |
| // Currently, there are 2 ways to set browser's accept-languages: through UI |
| // or directly modify the preference file. The accept-languages set through |
| // UI is guranteed to be valid, and the accept-languages string returned from |
| // profile()->GetPrefs()->GetString(prefs::kAcceptLanguages) is guranteed to |
| // be valid and well-formed, which means each accept-langauge is a valid |
| // code, and accept-languages are seperatd by "," without surrrounding |
| // spaces. But we do not do any validation (either the format or the validity |
| // of the language code) on accept-languages set through editing preference |
| // file directly. So, here, we're adding extra checks to be resistant to |
| // crashes caused by data corruption. |
| if (accept_languages.empty()) { |
| error_ = kEmptyAcceptLanguagesError; |
| return false; |
| } |
| |
| std::vector<std::string> languages; |
| base::SplitString(accept_languages, ',', &languages); |
| languages.erase(std::remove(languages.begin(), languages.end(), ""), |
| languages.end()); |
| |
| if (languages.empty()) { |
| error_ = kEmptyAcceptLanguagesError; |
| return false; |
| } |
| |
| results_ = GetAcceptLanguages::Results::Create(languages); |
| return true; |
| } |
| |
| } // namespace extensions |