git hook delegate

git-hook-delegate.sh

#!/bin/bash

GIT_HOOK_DIR="$0.d"

if [[ -d $GIT_HOOK_DIR ]] ; then
  while IFS= read -r -d $'\0' hook ; do
    "./$hook" || error="yes"
  done < <(find "$GIT_HOOK_DIR" -mindepth 1 -print0)

  [[ -n $error ]] && exit 1
fi

exit 0

This is a very simple delegate script for git hooks. The problem with git hooks is, that you can only have one per hook category, e.g. pre-commit. This delegate expects a directory, e.g. pre-commit.d and runs everything inside that directory.

Installation

To demonstrate the installation, we are going to check this repository itself using shellcheck. For this to work you will need to install shellcheck yourself using your package manager (pacman, yum, apt, ...). Once that is done:

# clone this repository
git clone https://gist.github.com/wookietreiber/abad73d1c1811a1fed4a7019b34e9c5f.git git-hook-delegate

# clone shellcheck hook repository
git clone https://gist.github.com/wookietreiber/3bf8621274caafed543fca6a3feab284.git git-hook-shellcheck

# symlink the delegate
cd git-hook-delegate/.git/hooks
ln -s ../../git-hook-delegate.sh pre-commit

# install shellcheck hook
mkdir pre-commit.d
cd pre-commit.d
ln -s ../../../../git-hook-shellcheck/git-hook-shellcheck.sh
cd ../../../

# change something that shellcheck will complain about
sed -i -e 's|find "$GIT_HOOK_DIR"|find $GIT_HOOK_DIR|' git-hook-delegate.sh

# try to commit
git commit -a