extensions/renderer/resource_bundle_source_map.cc

   1 // Copyright 2014 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 "extensions/renderer/resource_bundle_source_map.h"
   6
   7 #include "base/logging.h"
   8 #include "ui/base/resource/resource_bundle.h"
   9
  10 namespace extensions {
  11
  12 ResourceBundleSourceMap::ResourceBundleSourceMap(
  13     const ui::ResourceBundle* resource_bundle)
  14     : resource_bundle_(resource_bundle) {
  15 }
  16
  17 ResourceBundleSourceMap::~ResourceBundleSourceMap() {
  18 }
  19
  20 void ResourceBundleSourceMap::RegisterSource(const std::string& name,
  21                                              int resource_id) {
  22   resource_id_map_[name] = resource_id;
  23 }
  24
  25 v8::Local<v8::Value> ResourceBundleSourceMap::GetSource(
  26     v8::Isolate* isolate,
  27     const std::string& name) {
  28   if (!Contains(name)) {
  29     NOTREACHED() << "No module is registered with name \"" << name << "\"";
  30     return v8::Undefined(isolate);
  31   }
  32   base::StringPiece resource =
  33       resource_bundle_->GetRawDataResource(resource_id_map_[name]);
  34   if (resource.empty()) {
  35     NOTREACHED()
  36         << "Module resource registered as \"" << name << "\" not found";
  37     return v8::Undefined(isolate);
  38   }
  39   return ConvertString(isolate, resource);
  40 }
  41
  42 bool ResourceBundleSourceMap::Contains(const std::string& name) {
  43   return !!resource_id_map_.count(name);
  44 }
  45
  46 v8::Local<v8::String> ResourceBundleSourceMap::ConvertString(
  47     v8::Isolate* isolate,
  48     const base::StringPiece& string) {
  49   // v8 takes ownership of the StaticV8ExternalOneByteStringResource (see
  50   // v8::String::NewExternal()).
  51   return v8::String::NewExternal(
  52       isolate, new StaticV8ExternalOneByteStringResource(string));
  53 }
  54
  55 }  // namespace extensions