pre-commit

#!/bin/bash
#
# This file is part of postpic.
#
# postpic is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# postpic is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with postpic. If not, see <http://www.gnu.org/licenses/>.
#
# Copyright Stephan Kuschel, 2014-2015

# This script is a wrapper around the run-tests.py script.
# It is highly recommended to link it as the git pre-commit hook via:

# ln -s ../../pre-commit .git/hooks/pre-commit

# The difference to the run-tests.py script is that this script stashes
# unstaged changes before testing (see below). Thus only the changeset to be
# commited will be tested. No worries, "git commit -a" will still work ;)

# Stash unstaged changes if and only if(!) necessary (=possible):
# if you dont check that you might uninentionally apply an older stash,
# because this if statement just makes sure, that there are changed to
# be stashed on executing "git staph -q --keep-index". Otherwise it coud
# happen, that git stash is executed, but no stash is created, because
# there were no changes, that could be stashed.
if git diff-index --quiet HEAD --; then
    #echo "pre-commit hook without stashing"
    ./run-tests.py
    exitcode=$?
else
    #echo "pre-commit hook with stashing"
    git stash -q --keep-index
    ./run-tests.py
    exitcode=$?
    git stash pop -q
fi


exit $exitcode