git: how to grep received files in pre-receive hook

Question

I created the following pre-push script in my local repository .git/hooks/ to disallow pushing files with unresolved git conflicts to server:

#!/bin/bash
top_dir=$(git rev-parse --show-toplevel)
conflicts=$(grep -r -n -s --include=\*.{pm,pl,mc,mi,js,css} "<<<<<<< HEAD" "$top_dir")

if [ "$conflicts" = "" ]; then
    exit 0
else
    printf "Unresolved git conflict found, commit rejected.\n\n"
    echo "$conflicts"
    exit 1
fi

It works. But how can we reject all the commits with unresolved conflicts on server side pre-receive? Here I know top_dir - the dir, where to grep. But on server there are no saved files saved. I need to grep among the files that the client sends me.

How to do it?

Why did you ask [the same question](https://stackoverflow.com/questions/63781852/git-how-to-grep-received-files-in-pre-receive-hook) twice? — dan1st, Sep 07 '20 at 17:24
@dan1st (I think this was the first one) --- (I would also assume that someone else is using their account) — evolutionxbox, Sep 07 '20 at 17:25
According to the timestamp, this is the second one. According to the ids, this is the first one — dan1st, Sep 07 '20 at 17:26
Pushed references are sent to `stdin` on the pre-receive hook. — dan1st, Sep 07 '20 at 17:32

score 1 · Answer 1 · answered Sep 08 '20 at 07:33

As torek documents in "pre-receive hook unable to read the committed file to push into remote master":

Pre-receive hooks are generally more difficult to write as you must handle many cases:

multiple commits

references that are not branches (tags)

objects that are not commits (annotated tags)

branch creations and deletions as well as updates

That kind of hook works well for commit messages.
That being said, you can see an example here, in the nominal case:

# <oldrev> <newrev> <refname>
while  read oldrev newrev ref ;
do
    list = $ ( git show --pretty = " format: " --name-only $ {newrev}  | grep -e ' .php ' -e ' .phtml ' )
    for  file  in  $ {list} ;  do
        git show $ {newrev} : $ {file}  >  $ TMP_FILE
        OUTPUT = $ ( $ PHPCS_BIN -s --standard = $ PHPCS_CODING_STANDARD  $ TMP_FILE )
        ...

git: how to grep received files in pre-receive hook

1 Answers1