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/*
* Copyright (c) 2013, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "resumption/last_state.h"
#include "utils/file_system.h"
namespace resumption {
Json::Value LastState::toJson(const Dictionary& dict) {
Json::Value val;
Dictionary::const_iterator it;
Dictionary::rec_const_iterator rec_it;
it = dict.begin();
rec_it = dict.rec_begin();
for ( ; rec_it != dict.rec_end() ;++rec_it) {
std::string key = rec_it->first;
std::string value = rec_it->second;
val[key] = value;
}
for ( ; it != dict.end() ;++it) {
std::string key = it->first;
const Dictionary& value = it->second;
val[key] = toJson(value);
}
return val;
}
LastState::Dictionary LastState::fromJson(const Json::Value& json_val) {
Dictionary result;
Json::Value::Members members = json_val.getMemberNames();
Json::Value::Members::const_iterator it = members.begin();
for ( ; it != members.end(); ++it) {
std::string key = (*it);
const Json::Value& value = json_val[key];
if (value.isString()) {
result.AddItem(key,value.asString());
} else if(value.isObject()) {
Dictionary sub_item = fromJson(value);
result.AddSubitem(key, sub_item);
} else {
NOTREACHED();
}
}
return result;
}
void LastState::SaveToFileSystem() {
const Json::Value& val = toJson(dictionary);
const std::string& str = val.toStyledString();
const std::vector<uint8_t> char_vector_pdata(
str.begin(), str.end());
DCHECK(file_system::Write(filename, char_vector_pdata));
}
void LastState::LoadFromFileSystem() {
std::string buffer;
bool result = file_system::ReadFile(filename,buffer);
if (result) {
Json::Reader m_reader;
Json::Value val;
DCHECK(m_reader.parse(buffer,val));
dictionary = fromJson(val);
} else {
// Error
}
}
LastState::LastState() {
LoadFromFileSystem();
}
LastState::~LastState() {
SaveToFileSystem();
}
const std::string LastState::filename = "TM.dat";
}
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