chrome/common/extensions/api/i18n/default_locale_handler.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/common/extensions/api/i18n/default_locale_handler.h"
   6
   7 #include "base/file_util.h"
   8 #include "base/files/file_enumerator.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/strings/string_util.h"
  11 #include "base/strings/stringprintf.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/values.h"
  14 #include "extensions/common/constants.h"
  15 #include "extensions/common/extension_l10n_util.h"
  16 #include "extensions/common/manifest.h"
  17 #include "extensions/common/manifest_constants.h"
  18 #include "grit/extensions_strings.h"
  19 #include "ui/base/l10n/l10n_util.h"
  20
  21 namespace extensions {
  22
  23 namespace keys = manifest_keys;
  24 namespace errors = manifest_errors;
  25
  26 // static
  27 const std::string& LocaleInfo::GetDefaultLocale(const Extension* extension) {
  28   LocaleInfo* info = static_cast<LocaleInfo*>(
  29       extension->GetManifestData(keys::kDefaultLocale));
  30   return info ? info->default_locale : base::EmptyString();
  31 }
  32
  33 DefaultLocaleHandler::DefaultLocaleHandler() {
  34 }
  35
  36 DefaultLocaleHandler::~DefaultLocaleHandler() {
  37 }
  38
  39 bool DefaultLocaleHandler::Parse(Extension* extension, base::string16* error) {
  40   scoped_ptr<LocaleInfo> info(new LocaleInfo);
  41   if (!extension->manifest()->GetString(keys::kDefaultLocale,
  42                                         &info->default_locale) ||
  43       !l10n_util::IsValidLocaleSyntax(info->default_locale)) {
  44     *error = base::ASCIIToUTF16(manifest_errors::kInvalidDefaultLocale);
  45     return false;
  46   }
  47   extension->SetManifestData(keys::kDefaultLocale, info.release());
  48   return true;
  49 }
  50
  51 bool DefaultLocaleHandler::Validate(
  52     const Extension* extension,
  53     std::string* error,
  54     std::vector<InstallWarning>* warnings) const {
  55   // default_locale and _locales have to be both present or both missing.
  56   const base::FilePath path = extension->path().Append(kLocaleFolder);
  57   bool path_exists = base::PathExists(path);
  58   std::string default_locale =
  59       extensions::LocaleInfo::GetDefaultLocale(extension);
  60
  61   // If both default locale and _locales folder are empty, skip verification.
  62   if (default_locale.empty() && !path_exists)
  63     return true;
  64
  65   if (default_locale.empty() && path_exists) {
  66     *error = l10n_util::GetStringUTF8(
  67         IDS_EXTENSION_LOCALES_NO_DEFAULT_LOCALE_SPECIFIED);
  68     return false;
  69   } else if (!default_locale.empty() && !path_exists) {
  70     *error = errors::kLocalesTreeMissing;
  71     return false;
  72   }
  73
  74   // Treat all folders under _locales as valid locales.
  75   base::FileEnumerator locales(path, false, base::FileEnumerator::DIRECTORIES);
  76
  77   std::set<std::string> all_locales;
  78   extension_l10n_util::GetAllLocales(&all_locales);
  79   const base::FilePath default_locale_path = path.AppendASCII(default_locale);
  80   bool has_default_locale_message_file = false;
  81
  82   base::FilePath locale_path;
  83   while (!(locale_path = locales.Next()).empty()) {
  84     if (extension_l10n_util::ShouldSkipValidation(path, locale_path,
  85                                                   all_locales))
  86       continue;
  87
  88     base::FilePath messages_path = locale_path.Append(kMessagesFilename);
  89
  90     if (!base::PathExists(messages_path)) {
  91       *error = base::StringPrintf(
  92           "%s %s", errors::kLocalesMessagesFileMissing,
  93           base::UTF16ToUTF8(messages_path.LossyDisplayName()).c_str());
  94       return false;
  95     }
  96
  97     if (locale_path == default_locale_path)
  98       has_default_locale_message_file = true;
  99   }
 100
 101   // Only message file for default locale has to exist.
 102   if (!has_default_locale_message_file) {
 103     *error = errors::kLocalesNoDefaultMessages;
 104     return false;
 105   }
 106
 107   return true;
 108 }
 109
 110 bool DefaultLocaleHandler::AlwaysValidateForType(Manifest::Type type) const {
 111   // Required to validate _locales directory; see Validate.
 112   return true;
 113 }
 114
 115 const std::vector<std::string> DefaultLocaleHandler::Keys() const {
 116   return SingleKey(keys::kDefaultLocale);
 117 }
 118
 119 }  // namespace extensions