#!/bin/sh
#
# Check syntax of Python and JavaScript files.

if git rev-parse --verify HEAD >/dev/null 2>&1
then
	against=HEAD
else
	# Initial commit: diff against an empty tree object
	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

# Redirect output to stderr.
# exec 1>&2

# test $(git diff --cached --name-only --diff-filter=A -z $against |
#   LC_ALL=C tr -d '[ -~]\0' | wc -c) != 0
files=$(git diff --cached --name-only --diff-filter=AMR -z $against)
python_files=$(echo $files | grep .*\.py)
javascript_files=$(echo $files | grep .*\.js)
flake_exit=0
jshint_exit=0

if [ -n "$python_files" ]; then
	flake8 $python_files
	flake_exit=$?
fi

if [ -n "$javascript_files" ]; then
	./node_modules/.bin/jshint $javascript_files
	jshint_exit=$?
fi

if [ !$flake_exit ] || [ !$jshint_exit ]; then
	exit 1
fi