# APIs for automatic patch generation 6 messages from 2010-02-20 to 2010-12-13. Participants: Markus Elfring, Sverre Rabbelier. Thread: https://gitlist.dev/t/22742 ## Markus Elfring, 2010-02-20 19:40 Subject: APIs for automatic patch generation Message-ID: <4B803AB8.30304@web.de> URL: https://gitlist.dev/e/4B803AB8.30304%40web.de ``` Hello, I would like to generate patches in the Git format for some other software automatically. Which application programming interfaces do you recommend for this purpose if I am going to integrate this into a small C++ class library? http://www.kernel.org/pub/software/scm/git/docs/v1.7.0/technical/api-index.html http://git.wiki.kernel.org/index.php/Interfaces,_frontends,_and_tools Specific use cases: - Which functions or commands should I call to retrieve the required informations for a line like "index 8d16832..358c98b 100644"? - Can any functions help to construct proper range specifications for difference hunks? Regards, Markus ``` ## Markus Elfring, 2010-02-23 17:04 Subject: Re: APIs for automatic patch generation Message-ID: <4B840AA2.3010604@web.de> URL: https://gitlist.dev/e/4B840AA2.3010604%40web.de In-Reply-To: <4B803AB8.30304@web.de> ``` Hello, The commands "git diff" and "git format-patch" contain functionality that I would like to reuse for my little application in a C++ class library. Which functions exist in a C API that can provide the following data? - a line like "index 8d16832..358c98b 100644" - range specifications for difference hunks - mail construction Regards, Markus ``` ## Sverre Rabbelier, 2010-02-23 17:07 Subject: Re: APIs for automatic patch generation Message-ID: URL: https://gitlist.dev/e/fabb9a1e1002230907u6471efa5w234a5dabfa4ba5e1%40mail.gmail.com In-Reply-To: <4B840AA2.3010604@web.de> ``` Heya, On Tue, Feb 23, 2010 at 18:04, Markus Elfring wrote: > The commands "git diff" and "git format-patch" contain functionality that I > would like to reuse for my little application in a C++ class library. Until libgit2 is done, just shell out and call 'git format-patch'. [0] http://git.wiki.kernel.org/index.php/SoC2010Ideas#libgit2 -- Cheers, Sverre Rabbelier ``` ## Markus Elfring, 2010-02-23 17:23 Subject: Re: APIs for automatic patch generation Message-ID: <4B840EF5.2090306@web.de> URL: https://gitlist.dev/e/4B840EF5.2090306%40web.de In-Reply-To: ``` > Until libgit2 is done, just shell out and call 'git format-patch'. Thanks for the link. I do not need the whole functionality of these commands for my library. I am looking if the mentioned data items can also be really retrieved by command line parameters. Regards, Markus ``` ## Sverre Rabbelier, 2010-02-23 18:07 Subject: Re: APIs for automatic patch generation Message-ID: URL: https://gitlist.dev/e/fabb9a1e1002231007p650d78fere904f6e5572b12d%40mail.gmail.com In-Reply-To: <4B840EF5.2090306@web.de> ``` Heya, On Tue, Feb 23, 2010 at 18:23, Markus Elfring wrote: > I do not need the whole functionality of these commands for my library. My answer still holds. -- Cheers, Sverre Rabbelier ``` ## Markus Elfring, 2010-12-13 16:00 Subject: Re: APIs for automatic patch generation Message-ID: <4D06431E.5020906@web.de> URL: https://gitlist.dev/e/4D06431E.5020906%40web.de In-Reply-To: <4B840AA2.3010604@web.de> ``` > The commands "git diff" and "git format-patch" contain functionality that I > would like to reuse for my little application in a C++ class library. Which functions exist in the recently published C API (http://libgit2.github.com/) that can provide the following data? * a line like "index 8d16832..358c98b 100644" * range specifications for difference hunks * mail construction Regards, Markus ```