# splitting large patch files into smaller ones 3 messages from 2007-08-22 to 2007-08-23. Participants: Erez Zadok, René Scharfe, Johannes Schindelin. Thread: https://gitlist.dev/t/9615 ## Erez Zadok, 2007-08-22 19:29 Subject: splitting large patch files into smaller ones Message-ID: <200708221929.l7MJTgiL012452@agora.fsl.cs.sunysb.edu> URL: https://gitlist.dev/e/200708221929.l7MJTgiL012452%40agora.fsl.cs.sunysb.edu ``` I recently had an occasion to take a rather large git-diff patch, and split it into smaller chunks. This was so I can more easily import the patches into guilt, then reorder, rename, shuffle, and join individual patch snippets into logical patches (i.e., one patch per topic). I was looking around for a tool that would allow me to split a large patch file into individual snippets and couldn't find one. So I wrote one in perl. It takes a patch file and creates individual small files, one for each combination of a filename listed in the patch, and a patch snippet (starting with an '@@' line). Each '@@' snippet gets an index number and a new filename, prefixed with the appropriate header ("diff ...", ---, and +++ lines) so it's a valid patch file on its own. Questions: 1. Does anyone know of such a tool, perhaps written in C for better speed? 2. If not, is there any interest in such a tool? If there's interest, I'd be happy to cleanup my perl script and contribute it to git/guilt/whatever. Cheers, Erez. ``` ## René Scharfe, 2007-08-22 21:54 Subject: Re: splitting large patch files into smaller ones Message-ID: <46CCB07C.9010200@lsrfire.ath.cx> URL: https://gitlist.dev/e/46CCB07C.9010200%40lsrfire.ath.cx In-Reply-To: <200708221929.l7MJTgiL012452@agora.fsl.cs.sunysb.edu> ``` Erez Zadok schrieb: > I recently had an occasion to take a rather large git-diff patch, and split > it into smaller chunks. This was so I can more easily import the patches > into guilt, then reorder, rename, shuffle, and join individual patch > snippets into logical patches (i.e., one patch per topic). > > I was looking around for a tool that would allow me to split a large patch > file into individual snippets and couldn't find one. So I wrote one in > perl. It takes a patch file and creates individual small files, one for > each combination of a filename listed in the patch, and a patch snippet > (starting with an '@@' line). Each '@@' snippet gets an index number and a > new filename, prefixed with the appropriate header ("diff ...", ---, and +++ > lines) so it's a valid patch file on its own. > > Questions: > > 1. Does anyone know of such a tool, perhaps written in C for better speed? The patchutils collection[1] contains a tool called splitdiff, which does something slightly different[2]. It might be a good starting point, though. René [1] http://cyberelk.net/tim/software/patchutils/?page_id=10 [2] http://cyberelk.net/tim/patchutils/man/splitdiff.html ``` ## Johannes Schindelin, 2007-08-23 09:43 Subject: Re: splitting large patch files into smaller ones Message-ID: URL: https://gitlist.dev/e/Pine.LNX.4.64.0708231042120.20400%40racer.site In-Reply-To: <200708221929.l7MJTgiL012452@agora.fsl.cs.sunysb.edu> ``` Hi, On Wed, 22 Aug 2007, Erez Zadok wrote: > I was looking around for a tool that would allow me to split a large > patch file into individual snippets and couldn't find one. So I wrote > one in perl. It takes a patch file and creates individual small files, > one for each combination of a filename listed in the patch, and a patch > snippet (starting with an '@@' line). Each '@@' snippet gets an index > number and a new filename, prefixed with the appropriate header ("diff > ...", ---, and +++ lines) so it's a valid patch file on its own. You can do that with "git add -i" and with "git gui" AFAIK. I even started some code to split hunks in "git gui", but it was pointed out that that code was not complete, and I did not have time to finish it. Ciao, Dscho ```