[fpc-pascal] Replacing parts of a string with TRegexpr

luciano de souza luchyanus at gmail.com
Thu Feb 22 17:01:23 CET 2018

I am blind and it's not so easy to read the source code with so many comments.
Dispite this, I find the method "TRegexpr.replace", accepting as the
first argument the input string and the second the template string.
The return is what I want.
In other words, the problem is solved and anything else is needed!
Sorry for the unnecessary question!

2018-02-22 10:38 GMT-03:00, luciano de souza <luchyanus at gmail.com>:
> Hello all,
> I'd like to replace some part of a string acording to a pattern.
> I know how to search and print the matches of a ER:
> program test;
> {$mode objfpc}{$H+}
> uses
> regexpr;
> var
> r: TRegexpr;
> r := TRegexpr.create('(\d+)');
> try
> if r.exec('01 Brazil, 02 USA, 03 China') then
> begin
> repeat
> writeln(r.match[0]);
> until not r.ExecNext;
> end
> else
> writeln('Pattern not found');
> finally
> r.free;
> end;
> END.
> But how could I to substitute all "(\d+)", for example, to "xx".
> The regexpr unit has some documentation in its source code, but
> dispite this, I was not able to understand how to do it.
> --
> Luciano de Souza

Luciano de Souza

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