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// Copyright 2014 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 "extensions/common/features/json_feature_provider_source.h"
#include <utility>
#include "base/json/json_reader.h"
#include "base/logging.h"
#include "ui/base/resource/resource_bundle.h"
namespace extensions {
JSONFeatureProviderSource::JSONFeatureProviderSource(const std::string& name)
: name_(name) {
}
JSONFeatureProviderSource::~JSONFeatureProviderSource() {
}
void JSONFeatureProviderSource::LoadJSON(int resource_id) {
const base::StringPiece features_file =
ResourceBundle::GetSharedInstance().GetRawDataResource(resource_id);
int error_code = 0;
std::string error_message;
scoped_ptr<base::Value> value(base::JSONReader::ReadAndReturnError(
features_file, base::JSON_PARSE_RFC, &error_code, &error_message));
DCHECK(value) << "Could not load features: " << name_ << " " << error_message;
scoped_ptr<base::DictionaryValue> value_as_dict;
if (value) {
CHECK(value->IsType(base::Value::TYPE_DICTIONARY)) << name_;
value_as_dict = base::DictionaryValue::From(std::move(value));
} else {
// There was some error loading the features file.
// http://crbug.com/176381
value_as_dict.reset(new base::DictionaryValue());
}
// Ensure there are no key collisions.
for (base::DictionaryValue::Iterator iter(*value_as_dict); !iter.IsAtEnd();
iter.Advance()) {
if (dictionary_.GetWithoutPathExpansion(iter.key(), NULL))
LOG(FATAL) << "Key " << iter.key() << " is defined in " << name_
<< " JSON feature files more than once.";
}
// Merge.
dictionary_.MergeDictionary(value_as_dict.get());
}
} // namespace extensions
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