custom macro interpreter program for AS/400 automation

In my working place I've to do some repetitive tasks in a Windows 3270 terminal emulator (a text-only application that looks similar to a telnet session in a DOS window). I need a light and fast macro interpreter that reads and executes automation scripts done by me like this: - readscreen - if screen != /////////////////// /////////////////// / FOOBAR[0-9]+ /// /////////////////// /////////////////// then { continue_or_exit_messagebox (note: must show a message box that asks if to continue the execution of the macro or to exit) } - sendkeys:type this text[enter][tab][arrowright][F3] - label foobarcycle - readscreen - if screen != //////TITLE2/////// /////////////////// / [^0-9]*123 /// /////////////////// /////////////////// then { continue_or_exit_messagebox } - if screen != //////END////////// /////////////////// / [^0-9]*123 /// /////////////////// /////////////////// then { goto foobarcycle } - sendkeys:[F3] The set of supported instructions must that shown in my example, thus: - readscreen (read the text in the screen and put it in the variable 'screen') - if/then/else - label/goto - sendkeys - error_message_box The text under the instruction 'if screen' must be evaluated as multiline regular expression, not as simple text. The macro editor must show and select, after I press 'run' and in real time, the line that is executing. I need the compiled program, all the sources and the ownership. Escrow offered.