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// -*- Mode: C++; indent-tabs-mode: nil; tab-width: 2 -*-
/*
* Copyright (C) 2011 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* 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, see <http://www.gnu.org/licenses/>.
*
* Authored by: Tim Penhey <tim.penhey@canonical.com>
* Mirco Müller <mirco.mueller@canonical.com
*/
#ifndef UNITY_CORE_JSON_PARSER_H
#define UNITY_CORE_JSON_PARSER_H
#include <string>
#include <vector>
#include <map>
#include <boost/algorithm/string.hpp>
#include <NuxCore/Color.h>
#include <json-glib/json-glib.h>
#include "UnityCore/GLibWrapper.h"
namespace unity
{
namespace json
{
class Parser
{
public:
Parser();
bool Open(std::string const& filename);
void ReadInt(std::string const& node_name,
std::string const& member_name,
int& value) const;
void ReadInts(std::string const& node_name,
std::string const& member_name,
std::vector<int>& values) const;
void ReadDouble(std::string const& node_name,
std::string const& member_name,
double& value) const;
void ReadDoubles(std::string const& node_name,
std::string const& member_name,
std::vector<double>& values) const;
void ReadColor(std::string const& node_name,
std::string const& member_name,
std::string const& opacity_name,
nux::Color& color) const;
void ReadColors(std::string const& node_name,
std::string const& member_name,
std::string const& opacity_name,
std::vector<nux::Color>& colors) const;
template <typename T>
void ReadMappedString(std::string const& node_name,
std::string const& member_name,
std::map<std::string, T> const& mapping,
T& value) const;
template <typename T>
void ReadMappedStrings(std::string const& node_name,
std::string const& member_name,
std::map<std::string, T> const& mapping,
std::vector<T>& values) const;
private:
JsonObject* GetNodeObject(std::string const& node_name) const;
JsonArray* GetArray(std::string const& node_name,
std::string const& member_name) const;
private:
glib::Object<JsonParser> parser_;
JsonNode* root_;
};
template <typename T>
void Parser::ReadMappedStrings(std::string const& node_name,
std::string const& member_name,
std::map<std::string, T> const& mapping,
std::vector<T>& values) const
{
JsonArray* array = GetArray(node_name, member_name);
if (!array)
return;
std::size_t size = std::min<size_t>(json_array_get_length(array),
values.size());
for (std::size_t i = 0; i < size; ++i)
{
std::string key(json_array_get_string_element(array, i));
boost::to_lower(key);
auto it = mapping.find(key);
if (it != mapping.end())
values[i] = it->second;
}
}
template <typename T>
void Parser::ReadMappedString(std::string const& node_name,
std::string const& member_name,
std::map<std::string, T> const& mapping,
T& value) const
{
JsonObject* object = GetNodeObject(node_name);
if (!object)
return;
std::string key(json_object_get_string_member(object, member_name.c_str()));
boost::to_lower(key);
auto it = mapping.find(key);
if (it != mapping.end())
value = it->second;
}
}
}
#endif
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