text: // Copyright (c) 2012 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/bind.h"
  #include "base/file_util.h"
  #include "base/files/important_file_writer.h"
  #include "base/json/json_reader.h"
  #include "base/json/json_writer.h"
  #include "base/location.h"
  #include "base/memory/scoped_ptr.h"
  #include "base/values.h"
  
  namespace remoting {
  
  JsonHostConfig::JsonHostConfig(const base::FilePath& filename)
      : filename_(filename) {
  }
  
  JsonHostConfig::~JsonHostConfig() {}
  
  bool JsonHostConfig::Read() {
    DCHECK(CalledOnValidThread());
  
    // TODO(sergeyu): Implement better error handling here.
    std::string file_content;
    if (!file_util::ReadFileToString(filename_, &file_content)) {
      LOG(WARNING) << "Failed to read " << filename_.value();
      return false;
    }
  
    return SetSerializedData(file_content);
  }
  
  bool JsonHostConfig::Save() {
    DCHECK(CalledOnValidThread());
  
    return base::ImportantFileWriter::WriteFileAtomically(filename_,
                                                          GetSerializedData());
  }
  
  std::string JsonHostConfig::GetSerializedData() {
    std::string data;
    base::JSONWriter::Write(values_.get(), &data);
    return data;
  }
  
  bool JsonHostConfig::SetSerializedData(const std::string& config) {
    scoped_ptr<Value> value(
        base::JSONReader::Read(config, base::JSON_ALLOW_TRAILING_COMMAS));
    if (value.get() == NULL || !value->IsType(Value::TYPE_DICTIONARY)) {
      LOG(WARNING) << "Failed to parse " << filename_.value();
      return false;
    }
  
    DictionaryValue* dictionary = static_cast<DictionaryValue*>(value.release());
    values_.reset(dictionary);
    return true;
  }
  
  }  // namespace remoting
  