Git Update Hook

update.sh

#!/bin/bash

# --- Command line
refname="$1"
oldrev="$2"
newrev="$3"
branch=${refname#refs/heads/}

# Make a temp directory for writing the .jshintrc file
TMP_DIR=`mktemp -d`
EXIT_CODE=0

# See if the git repo has a .jshintrc file
JSHINTRC=`git ls-tree --full-tree --name-only -r $refname -- | egrep .jshintrc`

JSHINT="jshint"
if [ -n "$JSHINTRC" ]; then
    # Create a path to a temp .jshintrc file
    JSHINTRC_FILE="$TMP_DIR/`basename \"$JSHINTRC\"`"

    # Write the repo file to the temp location
    git cat-file blob $refname:$JSHINTRC > $JSHINTRC_FILE

    # Update the JSHint command to use the configuration file
    JSHINT="$JSHINT --config=$JSHINTRC_FILE"
fi

# Check all of the .js files that changed between oldrev and newrev
for FILE in `git diff --name-only -r ${oldrev} ${newrev} -- | egrep '.*\.js' | egrep -v '(.*vendors/.*|.*\.min\.js)'`; do
    # Get just the path of the file
    FILE_PATH=`dirname ${FILE}`

    # Join that with the tmp directory; make if it does not exist
    FULL_PATH=${TMP_DIR}/${FILE_PATH}
    mkdir -p ${FULL_PATH}

    # Write the file from Git
    git cat-file blob ${newrev}:${FILE} > "$TMP_DIR/$FILE"

    # Move to the tmp dir
    OLD_CURRENT_DIR="$PWD"
    cd $TMP_DIR

    # Run JSHint on the file and redirect the output back to Git
    ${JSHINT} ${FILE} >&2

    # Capture the exit status of last command
    EXIT_CODE=$((${EXIT_CODE} + $?))

    # Restore the last working directory
    cd $OLD_CURRENT_DIR
done

# If the EXIT_CODE is not 0 fail
if [[ $EXIT_CODE -ne 0 ]]; then
    rm -rf ${TMP_DIR}
    echo ""
    echo "JSHint detected syntax problems."
    echo "Commit aborted."
    exit $EXIT_CODE
fi

# Clean-up the created files
rm -rf ${TMP_DIR}

# Capture the exit status of last command
EXIT_CODE=$((${EXIT_CODE} + $?))

exit $EXIT_CODE