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/**
* Copyright (C) 2013-2020 MulticoreWare, Inc
*
* Authors: Bhavna Hariharan <bhavna@multicorewareinc.com>
* Kavitha Sampath <kavitha@multicorewareinc.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at license @ x265.com.
**/
#include "JsonHelper.h"
#include "sys/stat.h"
#include <fstream>
#include <iostream>
using namespace std;
JsonObject JsonHelper::add(string key, string value, JsonObject &json)
{
json[key] = value;
return json;
}
bool JsonHelper::writeJson(JsonObject json, string path)
{
if(!validatePathExtension(path))
{
return false;
}
ofstream JsonSaveFile(path);
string jsonString;
jsonString = dump(json);
JsonSaveFile << jsonString;
JsonSaveFile.close();
return true;
}
bool JsonHelper::writeJson(JsonArray json, string path)
{
if(!validatePathExtension(path))
{
return false;
}
string arrayString = "[";
size_t jsonSize = json.size();
for(size_t i = 0; i < jsonSize; ++i)
{
arrayString += "\n" + dump(json.at(i).object_items(), 1);
if(i != jsonSize - 1)
{
arrayString += ",";
}
}
arrayString += "\n]";
ofstream JsonSaveFile(path);
JsonSaveFile << arrayString;
JsonSaveFile.close();
return true;
}
string JsonHelper::dump(JsonObject json, int extraTab)
{
string dump = Json(json).dump();
//[defensive programming] possibly check if dump returns a invalid string
string out = "";
unsigned int tabCounter = extraTab;
printTabs(out,tabCounter);
for(unsigned int i = 0; i < dump.size(); ++i)
{
if(dump[i] == '{' || dump[i] == '[')
{
out += dump[i];
out += '\n';
++tabCounter;
printTabs(out, tabCounter);
}
else if(dump[i] == '}' || dump[i] == ']')
{
out += '\n';
--tabCounter;
printTabs(out, tabCounter);
out += dump[i];
}
else if(dump[i] == ',')
{
out += dump[i];
out += '\n';
printTabs(out, tabCounter);
++i; //skip blank space following comma
}
else
{
out += dump[i];
}
}
return out;
}
void JsonHelper::printTabs(string &out, int tabCounter)
{
for(int i = 0; i < tabCounter; ++i)
{
out += '\t';
}
}
JsonObject JsonHelper::readJson(string path)
{
std::size_t ext = path.find_last_of('.');
std::string extension = path.substr(ext+1);
if(extension.compare("json") && extension.compare("JSON"))
{
std::cout << "Fail open file, extension not valid!" << std::endl;
return JsonObject();
}
struct stat buffer;
if(stat(path.c_str(),&buffer))
{
std::cout << "Fail open file, file doesn't exist" << std::endl;
return JsonObject();
}
std::ifstream ifs(path);
const std::string json_str2((std::istreambuf_iterator<char>(ifs)),
(std::istreambuf_iterator<char>()));
string err = "";
return Json::parse(json_str2,err, JsonParse::COMMENTS).object_items();
}
JsonArray JsonHelper::readJsonArray(const string &path)
{
std::size_t ext = path.find_last_of('.');
std::string extension = path.substr(ext+1);
if(extension.compare("json") && extension.compare("JSON"))
{
std::cout << "Fail open file, extension not valid!" << std::endl;
return JsonArray();
}
struct stat buffer;
if(stat(path.c_str(),&buffer))
{
std::cout << "Fail open file, file doesn't exist" << std::endl;
return JsonArray();
}
std::ifstream ifs(path);
const std::string json_str2((std::istreambuf_iterator<char>(ifs)),
(std::istreambuf_iterator<char>()));
string err = "";
return Json::parse(json_str2,err, JsonParse::COMMENTS).array_items();
}
bool JsonHelper::validatePathExtension(string &path)
{
if(path.empty())
{
std::cout << "Fail saving json file" << std::endl;
return false;
}
std::size_t ext = path.find_last_of('.');
std::string realFilePath = path;
if(ext == std::string::npos)
{
realFilePath += ".json";
}
else
{
std::string extension = path.substr(ext+1);
if(extension.compare("json") && extension.compare("JSON"))
{
std::cout << "Fail saving file, extension not valid!" << std::endl;
return false;
}
}
path = realFilePath;
return true;
}
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