OpenSceneGraph/src/osgPlugins/lua/ReaderWriterLua.cpp

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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2013 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library 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
* OpenSceneGraph Public License for more details.
*/
#include <osgDB/FileNameUtils>
#include <osgDB/FileUtils>
#include <osgDB/Registry>
#include "LuaScriptEngine.h"
class ReaderWriterLua : public osgDB::ReaderWriter
{
public:
ReaderWriterLua()
{
supportsExtension("lua","lua script");
}
virtual const char* className() const { return "Lua ScriptEngine plugin"; }
virtual ReadResult readObject(std::istream& fin,const osgDB::ReaderWriter::Options* options =NULL) const
{
osg::ref_ptr<osg::Script> script = new osg::Script;
script->setLanguage("lua");
std::string str;
while(fin)
{
int c = fin.get();
if (c>=0 && c<=255)
{
str.push_back(c);
}
}
script->setScript(str);
return script.release();
}
virtual ReadResult readObject(const std::string& file, const osgDB::ReaderWriter::Options* options =NULL) const
{
if (file=="ScriptEngine.lua") return new lua::LuaScriptEngine();
std::string ext = osgDB::getLowerCaseFileExtension(file);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
std::string fileName = osgDB::findDataFile( file, options );
if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;
osgDB::ifstream istream(fileName.c_str(), std::ios::in);
if(!istream) return ReadResult::FILE_NOT_HANDLED;
return readObject(istream, options);
}
};
// now register with Registry to instantiate the above
// reader/writer.
REGISTER_OSGPLUGIN(lua, ReaderWriterLua)