src/chrome/common/extensions/api/speech/tts_engine_manifest_handler.cc

   1 // Copyright (c) 2012 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/speech/tts_engine_manifest_handler.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/strings/string_number_conversions.h"
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "base/values.h"
  11 #include "extensions/common/error_utils.h"
  12 #include "extensions/common/manifest.h"
  13 #include "extensions/common/manifest_constants.h"
  14 #include "ui/base/l10n/l10n_util.h"
  15
  16 namespace extensions {
  17
  18 namespace keys = manifest_keys;
  19 namespace errors = manifest_errors;
  20
  21 namespace {
  22
  23 struct TtsVoices : public Extension::ManifestData {
  24   TtsVoices() {}
  25   ~TtsVoices() override {}
  26
  27   std::vector<extensions::TtsVoice> voices;
  28 };
  29
  30 }  // namespace
  31
  32 TtsVoice::TtsVoice() : remote(false) {}
  33
  34 TtsVoice::~TtsVoice() {}
  35
  36 // static
  37 const std::vector<TtsVoice>* TtsVoice::GetTtsVoices(
  38     const Extension* extension) {
  39   TtsVoices* info = static_cast<TtsVoices*>(
  40       extension->GetManifestData(keys::kTtsVoices));
  41   return info ? &info->voices : NULL;
  42 }
  43
  44 TtsEngineManifestHandler::TtsEngineManifestHandler() {
  45 }
  46
  47 TtsEngineManifestHandler::~TtsEngineManifestHandler() {
  48 }
  49
  50 bool TtsEngineManifestHandler::Parse(Extension* extension,
  51                                      base::string16* error) {
  52   scoped_ptr<TtsVoices> info(new TtsVoices);
  53   const base::DictionaryValue* tts_dict = NULL;
  54   if (!extension->manifest()->GetDictionary(keys::kTtsEngine, &tts_dict)) {
  55     *error = base::ASCIIToUTF16(errors::kInvalidTts);
  56     return false;
  57   }
  58
  59   if (!tts_dict->HasKey(keys::kTtsVoices))
  60     return true;
  61
  62   const base::ListValue* tts_voices = NULL;
  63   if (!tts_dict->GetList(keys::kTtsVoices, &tts_voices)) {
  64     *error = base::ASCIIToUTF16(errors::kInvalidTtsVoices);
  65     return false;
  66   }
  67
  68   for (size_t i = 0; i < tts_voices->GetSize(); i++) {
  69     const base::DictionaryValue* one_tts_voice = NULL;
  70     if (!tts_voices->GetDictionary(i, &one_tts_voice)) {
  71       *error = base::ASCIIToUTF16(errors::kInvalidTtsVoices);
  72       return false;
  73     }
  74
  75     TtsVoice voice_data;
  76     if (one_tts_voice->HasKey(keys::kTtsVoicesVoiceName)) {
  77       if (!one_tts_voice->GetString(
  78               keys::kTtsVoicesVoiceName, &voice_data.voice_name)) {
  79         *error = base::ASCIIToUTF16(errors::kInvalidTtsVoicesVoiceName);
  80         return false;
  81       }
  82     }
  83     if (one_tts_voice->HasKey(keys::kTtsVoicesLang)) {
  84       if (!one_tts_voice->GetString(
  85               keys::kTtsVoicesLang, &voice_data.lang) ||
  86           !l10n_util::IsValidLocaleSyntax(voice_data.lang)) {
  87         *error = base::ASCIIToUTF16(errors::kInvalidTtsVoicesLang);
  88         return false;
  89       }
  90     }
  91     if (one_tts_voice->HasKey(keys::kTtsVoicesGender)) {
  92       if (!one_tts_voice->GetString(
  93               keys::kTtsVoicesGender, &voice_data.gender) ||
  94           (voice_data.gender != keys::kTtsGenderMale &&
  95            voice_data.gender != keys::kTtsGenderFemale)) {
  96         *error = base::ASCIIToUTF16(errors::kInvalidTtsVoicesGender);
  97         return false;
  98       }
  99     }
 100     if (one_tts_voice->HasKey(keys::kTtsVoicesRemote)) {
 101       if (!one_tts_voice->GetBoolean(
 102               keys::kTtsVoicesRemote, &voice_data.remote)) {
 103         *error = base::ASCIIToUTF16(errors::kInvalidTtsVoicesRemote);
 104         return false;
 105       }
 106     }
 107     if (one_tts_voice->HasKey(keys::kTtsVoicesEventTypes)) {
 108       const base::ListValue* event_types_list;
 109       if (!one_tts_voice->GetList(
 110               keys::kTtsVoicesEventTypes,
 111               &event_types_list)) {
 112         *error = base::ASCIIToUTF16(
 113             errors::kInvalidTtsVoicesEventTypes);
 114         return false;
 115       }
 116       for (size_t i = 0; i < event_types_list->GetSize(); i++) {
 117         std::string event_type;
 118         if (!event_types_list->GetString(i, &event_type)) {
 119           *error = base::ASCIIToUTF16(errors::kInvalidTtsVoicesEventTypes);
 120           return false;
 121         }
 122         if (event_type != keys::kTtsVoicesEventTypeEnd &&
 123             event_type != keys::kTtsVoicesEventTypeError &&
 124             event_type != keys::kTtsVoicesEventTypeMarker &&
 125             event_type != keys::kTtsVoicesEventTypeSentence &&
 126             event_type != keys::kTtsVoicesEventTypeStart &&
 127             event_type != keys::kTtsVoicesEventTypeWord) {
 128           *error = base::ASCIIToUTF16(errors::kInvalidTtsVoicesEventTypes);
 129           return false;
 130         }
 131         if (voice_data.event_types.find(event_type) !=
 132             voice_data.event_types.end()) {
 133           *error = base::ASCIIToUTF16(errors::kInvalidTtsVoicesEventTypes);
 134           return false;
 135         }
 136         voice_data.event_types.insert(event_type);
 137       }
 138     }
 139
 140     info->voices.push_back(voice_data);
 141   }
 142
 143   extension->SetManifestData(keys::kTtsVoices, info.release());
 144   return true;
 145 }
 146
 147 const std::vector<std::string> TtsEngineManifestHandler::Keys() const {
 148   return SingleKey(keys::kTtsEngine);
 149 }
 150
 151 }  // namespace extensions