virtual WriteResult writeShader(const osg::Shader &shader,const std::string& fileName, const osgDB::ReaderWriter::Options*) const
{
std::string ext = osgDB::getFileExtension(fileName);
if (!acceptsExtension(ext)) return WriteResult::FILE_NOT_HANDLED;
osgDB::ofstream fout(fileName.c_str(), std::ios::out | std::ios::binary);
if(!fout) return WriteResult::ERROR_IN_WRITING_FILE;
return writeShader(shader, fout);
}
int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setApplicationName(arguments.getApplicationName());
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is a utility for converting glsl shader files into char arrays that can be compiled into applications.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
arguments.getApplicationUsage()->addCommandLineOption("--shader <filename>","Shader file to create a .cpp file for.");
arguments.getApplicationUsage()->addCommandLineOption("--write-to-source-file-directory","Use the path to the source filename as the directory to write to.");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display command line parameters");
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
bool useSamePathAsSourceFile = false;
if (arguments.read("--write-to-source-file-directory")) useSamePathAsSourceFile = true;
std::string filename;
if (arguments.read("--shader",filename))
{
osg::ref_ptr<osg::Shader> shader = osgDB::readShaderFile(filename);
if (shader.valid())
{
std::string name = osgDB::getStrippedName(filename);
std::string path = osgDB::getFilePath(filename);
std::string invalidCharacters = "-+/\\*=(){}[]:;<>,.?@'~#`!\"";
std::string numbericCharacters = "0123456789";
std::string::size_type pos = name.find_first_of(invalidCharacters);
while (pos != std::string::npos)
{
name[pos] = '_';
pos = name.find_first_of(invalidCharacters);
}
std::string ext = osgDB::getFileExtension(filename);
std::string cppFileName = name + "_" + ext + ".cpp";
if (useSamePathAsSourceFile) cppFileName = osgDB::concatPaths(path, cppFileName);
std::string variableName = name + "_" + ext;
writeShader(shader.get(), cppFileName, variableName);
return 0;
}
else
{
std::cout<<"Error: could not find file '"<<filename<<"'"<<std::endl;
return 1;
}
}
std::cout<<"No appropriate command line options used."<<std::endl;
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
