But a repository or branch can have thousands of commits, so running `git commit-file <commit>` seems maybe not be a wide idea. But parsing `git cat-file --batch` is difficult, because there seems to be no reliable way to discern when a commit starts and ends. I don't code in C though. A JSON formatter option would need a JSON library. But maybe there should be raised a discussion about JSON in Git if there are other people interested in this? On Tue, Apr 18, 2017 at 11:39 AM, Samuel Lijin <sxlijin@xxxxxxxxx> wrote: > If for some reason your use case is so performance intensive that you > can't just `git cat-file commit` every entry in `git rev-list --all` > individually, then you can also pipe input into `git cat-file --batch` > and read output as you pipe input in, which will give you a very > simple mechanism for delimiting the cat-file output. > > In any case, as developers, it's rare to have our job done for us. > That's why we write code. > > I'm sure people would be happy to help if you submitted patches to > support --format=json. > > On Tue, Apr 18, 2017 at 3:44 AM, Fred .Flintstone <eldmannen@xxxxxxxxx> wrote: >> Well the easiest way to work with that would be JSON. >> So the best would be if Git could output the data I want in JSON format. >> Then it would be easy for me to work with data. >> >> With git rev-list and git-cat file, its not so easy to reliably parse >> that output. >> >> On Tue, Apr 18, 2017 at 2:38 AM, Junio C Hamano <gitster@xxxxxxxxx> wrote: >>> "Fred .Flintstone" <eldmannen@xxxxxxxxx> writes: >>> >>>> So I would either have to do: >>>> git rev-list --all >>>> Then iterate over each line and do git-cat-file commit <commit-id>. >>>> >>>> Or do: >>>> git rev-list --all | git cat-file --batch >>>> >>>> If I do it in a batch, then it will be tricky to reliably parse since >>>> I don't know when the message body ends and when the next commit >>>> starts. >>>> >>>> JSON output would have been very handy. >>> >>> I am somewhat puzzled. I thought that you were trying to come up >>> with a way to produce JSON output and people are trying to help you >>> by pointing out tools that you can use for that.