bool Shader::_parseShaderDefines(const std::string& str, ShaderDefines& defines, unsigned int& index)
{
OSG_INFO<<"Shader::_parseShaderDefines("<<str<<")"<<std::endl;
std::string::size_type start_of_parameter = 0;
bool firstString = true;
bool indexSet = false;
do
{
// skip spaces, tabs, commans
start_of_parameter = find_first(str, NoneOf(" \t,"), start_of_parameter);
if (start_of_parameter==std::string::npos) break;
// find end of the parameter
std::string::size_type end_of_parameter = find_first(str, OneOf(" \t,)"), start_of_parameter);
if (end_of_parameter!=std::string::npos)
{
std::string::size_type start_of_open_brackets = find_first(str, EqualTo('('), start_of_parameter);
if (start_of_open_brackets<end_of_parameter) ++end_of_parameter;
}
else
{
end_of_parameter = str.size();
}
if (start_of_parameter<end_of_parameter)
{
std::string parameter = str.substr(start_of_parameter, end_of_parameter-start_of_parameter);
if (firstString)
{
firstString = false;
if (parameter[0]>='0' && parameter[0]<='9')
{
index = atoi(parameter.c_str());
indexSet = false;
OSG_INFO<<" setting index("<<index<<")"<<std::endl;
}
else
{
OSG_INFO<<" defines.insert("<<parameter<<")"<<std::endl;
defines.insert(parameter);
}
}
else
{
OSG_INFO<<" defines.insert("<<parameter<<")"<<std::endl;
defines.insert(parameter);
}
}
start_of_parameter = end_of_parameter+1;
} while (start_of_parameter<str.size());
return indexSet;
}
void Shader::_parseShaderDefines(const std::string& str, ShaderDefines& defines)
{
OSG_INFO<<"Shader::_parseShaderDefines("<<str<<")"<<std::endl;
std::string::size_type start_of_parameter = 0;
do
{
// skip spaces, tabs, commans
start_of_parameter = str.find_first_not_of(" \t,", start_of_parameter);
if (start_of_parameter==std::string::npos) break;
// find end of the parameter
std::string::size_type end_of_parameter = str.find_first_of(" \t,)", start_of_parameter);
if (end_of_parameter!=std::string::npos)
{
std::string::size_type start_of_open_brackets = str.find_first_of("(", start_of_parameter);
if (start_of_open_brackets<end_of_parameter) ++end_of_parameter;
}
else
{
end_of_parameter = str.size();
}
if (start_of_parameter<end_of_parameter)
{
std::string parameter = str.substr(start_of_parameter, end_of_parameter-start_of_parameter);
defines.insert(parameter);
OSG_INFO<<" defines.insert("<<parameter<<")"<<std::endl;
}
start_of_parameter = end_of_parameter+1;
} while (start_of_parameter<str.size());
}
