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#!/bin/sh
#
# Git hook script to verify what is about to be committed.
# Checks that the changes don't introduce new flake8 errors.
TMPDIFF=`tempfile`
FLAKE8="`git rev-parse --show-toplevel`/bin/flake8"
status=0
# select only changed python files which are not migrations
changed=`git diff --cached --name-only | grep 'py$' | grep -v 'migrations/[0-9]'`
git diff --unified=1 --cached HEAD -- $changed > $TMPDIFF
# only do the check when there are some changes to be commited
# otherwise flake8 would hang waiting for input
if [ -s $TMPDIFF ] ; then
cat $TMPDIFF | $FLAKE8 --diff
status=$?
fi
rm -f $TMPDIFF
exit $status