PHP CodeSniffer pre-receive hook for git

phpcs-git-hook-pre-receive

#!/bin/sh
# PHP CodeSniffer pre-receive hook for git

PHPCS_BIN="/usr/bin/phpcs"
PHPCS_CODING_STANDARD="PEAR"
# use coding standart dir from local repo
PHPCS_DIR_LOCAL=0

TMP_DIR=$(mktemp -d --tmpdir phpcs-pre-receive-hook.XXXXXXXX)
mkdir "$TMP_DIR/source"

# parse config
CONFIG_FILE=$(dirname $0)/config
if [ -e $CONFIG_FILE ]; then
    . $CONFIG_FILE
fi

# simple check if code sniffer is set up correctly
if [ ! -x $PHPCS_BIN ]; then
echo "PHP CodeSniffer bin not found or executable -> $PHPCS_BIN"
    exit 1
fi

# prepare our standart rules
if [ $PHPCS_DIR_LOCAL = 1 ]; then
    mkdir "$TMP_DIR/standart"
    git archive HEAD $PHPCS_CODING_STANDARD | tar -x -C "$TMP_DIR/standart"
    PHPCS_CODING_STANDARD="$TMP_DIR/standart/$PHPCS_CODING_STANDARD"
fi

# gathers all errors and sent to output at end
ERRORS=""
RETVAL=0

# <oldrev> <newrev> <refname>
while read oldrev newrev ref;
do
    list=$(git diff-tree --name-only -r $oldrev..$newrev | grep -e '.php' -e '.phtml')
    for file in ${list}; do
        # dirty hack for create dir tree
        mkdir -p $(dirname "$TMP_DIR/source/$file")
        git show ${newrev}:${file} > "$TMP_DIR/source/$file"
        OUTPUT=$($PHPCS_BIN -s --standard=$PHPCS_CODING_STANDARD "$TMP_DIR/source/$file")
        if [ "$?" -ne "0" ]; then
            ERRORS="${ERRORS}${OUTPUT}"
            RETVAL=1
        fi        
    done
done

# cleanup
rm -rf $TMP_DIR

echo "$ERRORS"

exit $RETVAL