[fpc-pascal] Parsing parameters inside an interpreter

Ludo Brands ludo.brands at free.fr
Mon May 14 11:33:35 CEST 2012

> I trying to build a very small interpreter. I can type commands like:
> $ add "Luciano de Souza" luchyanus at gmail.com
> Somewhere in my code, I can have something like:
> procedure parse(commandline: string; var params: array of string);
> In this case, the commandline has the format: "add %s %s". So 
> I would obtain:
> parse('add "Luciano de Souza" luchyanus at gmail.com', params);
> After this command, the parameter would have the following values:
> params[0] := 'add';
> params[1] := 'Luciano de Souza';
> params[2] := 'luchyanus at gmail.com';
> My question is: there is a way to do it easily using a 
> standard class of Freepascal?

Use TSTringList.DelimitedText:

  params.Delimiter:=' ';
  params.DelimitedText:='add "Luciano de Souza" luchyanus at gmail.com';

results in

 params[0] := 'add';
 params[1] := 'Luciano de Souza';
 params[2] := 'luchyanus at gmail.com';


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