errorCodeType readFile {
	initialize errorCode = 0;
	open the file;
	if ( theFilesOpen ) {
		determine its size;
		if ( gotTheFileLength ) {
			allocate that much memory;
			if ( gotEnoughMemory ) {
				read the file into memory;
				if ( readFailed ) {
					errorCode = -1;
				}
			} else {
				errorCode = -2;
			}
		} else {
			errorCode = -3;
		}
		close the file;
		if ( theFILEDidntClose && errorCode == 0 ) {
			errorCode = -4;
		} else {
			errorCode = errorCode and -4;
		}
	} else {
		errorCode = -5;
	}
	return errorCode;
}