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/* Copyright (C) 2017 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "AtlasObject.h"
#include "AtlasObjectImpl.h"
#include "JSONSpiritInclude.h"
#if defined(_MSC_VER)
# pragma warning(disable:4996) // deprecated CRT
#endif
#include "wx/log.h"
#include <sstream>
static AtSmartPtr<AtNode> ConvertNode(json_spirit::Value node);
AtObj AtlasObject::LoadFromJSON(const std::string& json)
{
json_spirit::Value rootnode;
json_spirit::read_string(json, rootnode);
AtObj obj;
obj.p = ConvertNode(rootnode);
return obj;
}
// Convert from a JSON to an AtNode
static AtSmartPtr<AtNode> ConvertNode(json_spirit::Value node)
{
AtSmartPtr<AtNode> obj (new AtNode());
if (node.type() == json_spirit::str_type)
{
obj->value = std::wstring(node.get_str().begin(),node.get_str().end());
}
else if (node.type() == json_spirit::int_type || node.type() == json_spirit::real_type)
{
std::wstringstream stream;
if (node.type() == json_spirit::int_type)
stream << node.get_int();
if (node.type() == json_spirit::real_type)
stream << node.get_real();
obj->value = stream.str().c_str();
obj->children.insert(AtNode::child_pairtype(
"@number", AtSmartPtr<AtNode>(new AtNode())
));
}
else if (node.type() == json_spirit::bool_type)
{
if (node.get_bool())
obj->value = L"true";
else
obj->value = L"false";
obj->children.insert(AtNode::child_pairtype(
"@boolean", AtSmartPtr<AtNode>(new AtNode())
));
}
else if (node.type() == json_spirit::array_type)
{
obj->children.insert(AtNode::child_pairtype(
"@array", AtSmartPtr<AtNode>(new AtNode())
));
json_spirit::Array nodeChildren = node.get_array();
json_spirit::Array::iterator itr = nodeChildren.begin();
for (; itr != nodeChildren.end(); ++itr)
{
obj->children.insert(AtNode::child_pairtype(
"item", ConvertNode(*itr)
));
}
}
else if (node.type() == json_spirit::obj_type)
{
json_spirit::Object objectProperties = node.get_obj();
json_spirit::Object::iterator itr = objectProperties.begin();
for (; itr != objectProperties.end(); ++itr)
{
obj->children.insert(AtNode::child_pairtype(
itr->name_, ConvertNode(itr->value_)
));
}
}
else if (node.type() == json_spirit::null_type)
{
return obj;
}
else
{
assert(! "Unimplemented type found when parsing JSON!");
}
return obj;
}
json_spirit::Value BuildJSONNode(AtNode::Ptr p)
{
if (!p)
{
json_spirit::Value rval;
return rval;
}
// Special case for numbers/booleans to allow round-tripping
if (p->children.count("@number"))
{
// Convert to double
std::wstringstream str;
str << p->value;
double val = 0;
str >> val;
json_spirit::Value rval(val);
return rval;
}
else if (p->children.count("@boolean"))
{
bool val = false;
if (p->value == L"true")
val = true;
json_spirit::Value rval(val);
return rval;
}
// If no children, then use the value string instead
if (p->children.empty())
{
json_spirit::Value rval(std::string(p->value.begin(), p->value.end()));
return rval;
}
if (p->children.find("@array") != p->children.end())
{
json_spirit::Array rval;
// Find the <item> children
AtNode::child_maptype::const_iterator lower = p->children.lower_bound("item");
AtNode::child_maptype::const_iterator upper = p->children.upper_bound("item");
unsigned int idx = 0;
for (AtNode::child_maptype::const_iterator it = lower; it != upper; ++it)
{
json_spirit::Value child = BuildJSONNode(it->second);
rval.push_back(child);
++idx;
}
return rval;
}
else
{
json_spirit::Object rval;
for (AtNode::child_maptype::const_iterator it = p->children.begin(); it != p->children.end(); ++it)
{
json_spirit::Value child = BuildJSONNode(it->second);
// We don't serialize childs with null value.
// Instead of something like this we omit the whole property: "StartingCamera": null
// There's no special reason for that, it's just the same behaviour the previous implementations had.
if (child.type() != json_spirit::null_type)
rval.push_back(json_spirit::Pair(it->first.c_str(), child));
}
return rval;
}
}
std::string AtlasObject::SaveToJSON(AtObj& obj)
{
json_spirit::Value root = BuildJSONNode(obj.p);
std::string ret = json_spirit::write_string(root, 0);
return ret;
}
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