static idStr R_LoadPreprocessed( const idStr& filename, idList<idStr>& previoulsyLoadedFiles, idList<idStr>& includeStack ) { includeStack.Append( filename ); previoulsyLoadedFiles.Append( filename ); const int fileIndex = previoulsyLoadedFiles.Num() - 1; idStr content = R_ReadFile(filename.c_str()); idStr ret; fhStrRef ptr = fhStrRef( content.c_str(), content.Length() ); fhStrRef remaining = ptr; int currentLine = 1; int currentColumn = 1; bool isLineComment = false; for (; !ptr.IsEmpty(); ++ptr) { if (ptr[0] == '\n') { ++currentLine; currentColumn = 1; isLineComment = false; continue; } if (isLineComment) { continue; } if (ptr.StartsWith( "//" )) { isLineComment = true; continue; } static const fhStrRef includeDirective = "#include \""; if (currentColumn == 1 && ptr.StartsWith( includeDirective )) { fhStrRef includeFilename = ptr.Substr( includeDirective.Length() ); for (int i = 0; i < includeFilename.Length() + 1; ++i) { if (i == includeFilename.Length()) throw fhParseException( filename, currentLine, currentColumn, "unexpected end-of-file in preprocessor include" ); if (includeFilename[i] == '\n') throw fhParseException( filename, currentLine, currentColumn, "unexpected end-of-line in preprocessor include" ); if (includeFilename[i] == '"') { includeFilename = includeFilename.Substr( 0, i ); break; } } if (includeFilename.IsEmpty()) throw fhParseException( filename, currentLine, currentColumn, "empty filename in preprocessor include" ); if (includeStack.FindIndex( includeFilename.ToString() ) >= 0) throw fhParseException( filename, currentLine, currentColumn, "circular preprocessor include" ); idStr includeContent; //try to load included shader relative to current file. If that fails try to load included shader from root directory. try { idStr includeFilePath; filename.ExtractFilePath(includeFilePath); includeFilePath.AppendPath( includeFilename.c_str(), includeFilename.Length() ); includeContent = R_LoadPreprocessed( includeFilePath, previoulsyLoadedFiles, includeStack ); ret.Append( remaining.c_str(), ptr.c_str() - remaining.c_str() ); ret.Append( includeContent ); //ret.Append( "\n#line " + toString( currentLine + 1 ) + " \"" + filename + "\"" ); } catch (const fhFileNotFoundException& e) { try { includeContent = R_LoadPreprocessed( includeFilename.ToString(), previoulsyLoadedFiles, includeStack ); ret.Append( remaining.c_str(), ptr.c_str() - remaining.c_str() ); ret.Append( includeContent ); //ret.append( "\n#line " + ToString( currentLine + 1 ) + " \"" + filename + "\"" ); } catch (const fhFileNotFoundException& e) { throw fhParseException( filename, currentLine, currentColumn, idStr( "include file not found: " ) + includeFilename.ToString() ); } } //skip rest of the line while (!ptr.IsEmpty() && ptr[0] != '\n') { ++ptr; } ++currentLine; currentColumn = 1; remaining = ptr; continue; } currentColumn++; } ret.Append( remaining.ToString() ); includeStack.RemoveIndex(includeStack.Num() - 1); return ret; }