githooks - Git hook: add a new file to repo if a new branch is created -

i writing git hook checks if new branch created, , if add predefined files repo new branch(some config files). because branch in process of being created, logic fails.

currently doing in post-receive hook, looks this:

#!/bin/sh read oldrev newrev refname branch=$(git rev-parse --symbolic --abbrev-ref $refname) echo "branch $branch" echo "oldrev $oldrev , newrev $newrev"   # if $oldrev 0000...0000, it's new branch # check if branch of format "feature_<name>" zero="0000000000000000000000000000000000000000" if [ "$oldrev" = "$zero" ] && [[ $branch =~ feature_.+ ]];     #create temp repo     temp_repo=`mktemp -d /tmp/repo.xxxxx`     cd $temp_repo     git clone $git_url     #here create config file needed, called file_name     git checkout "$branch"     git add "$file_name"     git commit -m "added config file"     git push origin $branch fi 

this works existing branch, newly created branch gives error fatal: not git repository: '.'.

i not sure in hook should use logic, don't know git. idea how can go this?

thanks

if you're in hook , want run "normal" git commands, need unset git_dir environment variable (inside hook it's set .).

that said, not seem me right approach. should work seems little surprising: if git push origin abc:feature_def i'll have re-fetch , merge origin pick newly-committed $file_name file. not make more sense require include file myself, it's there in commit on branch feature_def?

if so, pre-receive or update hook place checking. simplified example (untested):

#! /bin/sh # update hook - check if new branch named # feature_*, , if so, require config file  refname=$1 oldrev=$2 newrev=$3  # begin boilerplate null_sha1=0000000000000000000000000000000000000000  # kind of ref it? also, short name branch-or-tag case $refname in refs/heads/*) reftype=branch; shortname=${refname#refs/heads/};; refs/tags/*) reftype=tag; shortname=${refname#refs/tags/};; *) reftype=other;; esac  # what's happening ref? # note: if update, there potentially 2 different objtypes, # new 1 here case $oldrev,$newrev in $null_sha1,*) action=create; objtype=$(git cat-file -t $newrev);; *,$null_sha1) action=delete; objtype=$(git cat-file -t $oldrev);; *,*) action=update; objtype=$(git cat-file -t $newrev);; esac # end boilerplate  # code check feature branch.  top level file named xyzzy.conf must exist. check_feature_branch() {     if ! git show $refname:xyzzy.conf >/dev/null 2>&1;         echo "new branch $branch not contain xyzzy.conf @ top level" >&2         exit 1     fi }  # check whether we're creating branch named feature_*  case $action,$reftype,$shortname in create,branch,feature_*) check_feature_branch;; *) ;; esac  # if got here must ok exit 0