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// Copyright (c) 2010 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 "remoting/host/json_host_config.h"
#include "base/file_util.h"
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "base/message_loop_proxy.h"
#include "base/task.h"
#include "base/values.h"
namespace remoting {
JsonHostConfig::JsonHostConfig(
const FilePath& filename,
base::MessageLoopProxy* file_message_loop_proxy)
: filename_(filename),
values_(new DictionaryValue()),
message_loop_proxy_(file_message_loop_proxy) {
}
bool JsonHostConfig::Read() {
// TODO(sergeyu): Implement better error handling here.
std::string file_content;
if (!file_util::ReadFileToString(filename_, &file_content)) {
return false;
}
scoped_ptr<Value> value(base::JSONReader::Read(file_content, true));
if (value.get() == NULL || !value->IsType(Value::TYPE_DICTIONARY)) {
return false;
}
DictionaryValue* dictionary = static_cast<DictionaryValue*>(value.release());
AutoLock auto_lock(lock_);
values_.reset(dictionary);
return true;
}
bool JsonHostConfig::GetString(const std::string& path,
std::string* out_value) {
AutoLock auto_lock(lock_);
return values_->GetString(path, out_value);
}
void JsonHostConfig::Update(Task* task) {
{
AutoLock auto_lock(lock_);
task->Run();
}
delete task;
message_loop_proxy_->PostTask(
FROM_HERE, NewRunnableMethod(this, &JsonHostConfig::DoWrite));
}
void JsonHostConfig::SetString(const std::string& path,
const std::string& in_value) {
lock_.AssertAcquired();
values_->SetString(path, in_value);
}
void JsonHostConfig::DoWrite() {
std::string file_content;
base::JSONWriter::Write(values_.get(), true, &file_content);
AutoLock auto_lock(lock_);
// TODO(sergeyu): Move ImportantFileWriter to base and use it here.
file_util::WriteFile(filename_, file_content.c_str(), file_content.size());
}
} // namespace remoting
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