Is there a well known module or simple algorithm for applying a diff?

revdiablo has asked for the wisdom of the Perl Monks concerning the following question:

I am writing a program that deals with diffs. Looking through CPAN, I find Text::Diff, which will make my life much easier when generating the diffs. I do not see any simple way of applying the diffs, however. Basically, I have the equivalent of the GNU diff program, and I need the equivalent of patch. I tried seeking the assistance of Super Search to no avail.

I apologize if this was posted to the wrong place, but this is my first post to the Monestary. Also, I do not have any code, because at this time I am only in the research and planning phase.

Any help will be greatly appreciated,
revdiablo

Comment on Is there a well known module or simple algorithm for applying a diff?

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Re: Is there a well known module or simple algorithm for applying a diff? by Kanji (Parson) on Sep 15, 2002 at 00:02 UTC
I'm not sure how different the "(almost) unified diffs" are from regular unified diffs, but you might have some luck with VCP::Patch (alt.), which shares the same author as Text::Diff (alt.). There's also a pure Perl implementation of patch available off the ultra-groovy Perl Power Tools site. --k.	[reply]
Re: Is there a well known module or simple algorithm for applying a diff? by japhy (Canon) on Sep 15, 2002 at 04:05 UTC
"Is there a well known module or simple algorithm for applying a diff?" Algorithm::Diff. _____________________________________________________ Jeff`[japhy]`Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area) `s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;`	[reply]
Re: Re: Is there a well known module or simple algorithm for applying a diff? by Anonymous Monk on Sep 15, 2002 at 06:44 UTC
I am looking for help applying a diff, not creating a diff. :) I was aware of Algorithm::Diff, due to the fact that it's used by Text::Diff. It looks like VPC::Patch will do what I want, but a bit hesitant to use it, since it seems to be specifically for RevML. I'll probably end up just rolling my own.	[reply]
Re: Is there a well known module or simple algorithm for applying a diff? by Flexx (Pilgrim) on Sep 14, 2002 at 22:54 UTC
Well, my first idea would be to use `system('patch')`, if there's no way to do it within perl... But you could also look here: CPAN search on patch So long, Flexx	[reply] [d/l]