Various git hooks

pre-commit.phpcs

#!/bin/sh
###
#
# Runs phpcs to check for violations
#

PHPCS_BIN=$(command -v phpcs)
if [ ! $PHPCS_BIN ]; then
    exit 0
fi

if [ ! $(git config --bool hooks.phpcs.enabled) ]; then
    exit 0;
fi

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
FILES=$(git diff --cached --name-only --diff-filter=ACMR $against | grep \.php)

for f in $FILES; do
    $PHPCS_BIN $f
    if [ $? != 0 ]; then
        echo "Fix the file"
        exit 1
    fi
done

exit $?