Method readStream

src/cinder/gl/ShaderPreprocessor.cpp:326–347

}

std::string ShaderPreprocessor::readStream( std::istream &input, const fs::path &sourcePath, int lineNumberStart, int versionNumber, set<fs::path> &includeTree )
{
	// go through each line and process includes
	string line;
	int lineNumber = lineNumberStart;
	stringstream output;

	while( getline( input, line ) ) {
		std::string includeFilePath;
		if( findIncludeStatement( line, &includeFilePath ) ) {
			int numIncludesBefore = (int)includeTree.size();
			output << parseRecursive( includeFilePath, sourcePath.parent_path(), versionNumber, includeTree );
			output << getLineDirective( sourcePath, lineNumber, numIncludesBefore, versionNumber );
		}
		else
			output << line << "\n";

		lineNumber++;
	}

	return output.str();
}

std::string ShaderPreprocessor::getLineDirective( const fs::path &sourcePath, int lineNumber, int sourceStringNumber, int versionNumber ) const
{