pre-commit-hook

#!/bin/bash

################################################################################
#
#  This a list of things you might wish to check before making a commit
#  to ductus.  To automate this as a pre-commit hook, run the following
#  command from the top-level repository directory:
#
#  $ ln -fs ../../pre-commit-hook .git/hooks/pre-commit
#
################################################################################

# Change to the top-level directory of the repository
cd `git rev-parse --show-toplevel`

# checkout the content of the git stage (what is about to be committed) to TMPDIR
TMPDIR=`mktemp -d`
git diff --cached --name-only --diff-filter=ACMR | grep -v data.py | xargs git checkout-index --prefix=$TMPDIR/ --

# Check for pep8 compliance, at least to the extent that current
# ductus code follows it
pep8 $TMPDIR --filename=*.py --ignore=E501,E302,E261,E401,E225,E301 --repeat | sed -e "s/${TMPDIR//\//\\/}//"

# grab the error code from pep8 so we have time to delete temp files
CODE=${PIPESTATUS[0]}
rm -Rf $TMPDIR
if [ $CODE -ne 0 ]; then
	echo "Correct the above errors and git-add your files before committing again.";
fi
exit $CODE