chef-pre-commit

#!/bin/bash
# vim: set ft=sh:

# If you see 'warning: 2.1.7-compliant syntax, but you are running 2.1.6' then
# sudo chef gem install parser --version 2.2.2.6 --no-user-install
# sudo chef gem uninstall parser --version 2.2.3.0

RET=0

which foodcritic >/dev/null || ( echo ERR: no foodcritic && RET=$(($RET+$?)) )
which rubocop    >/dev/null || ( echo ERR: no rubocop && RET=$(($RET+$?)) )
which xmllint    >/dev/null || ( echo WARN: no xmllint && NOXML=1 )
which erb        >/dev/null || ( echo WARN: no erb && NOERB=1)
which jq         >/dev/null || ( echo WARN: no jq && NOJQ=1 )

if git rev-parse --verify HEAD >/dev/null 2>&1
then
  against=HEAD
else
  # Initial commit: if HEAD doesn't exist then diff against an empty tree object
  against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

# Redirect output to stderr.
exec 1>&2

# Foodcritic
REPOPATH=$(git rev-parse --show-toplevel)
foodcritic --epic-fail any $REPOPATH
RET=$(($RET+$?))

# Syntax check updated files
for FILE in $(git diff --cached --name-only); do
#for FILE in $(find $REPOPATH -type f ); do
  extension="${FILE##*.}"
  # Don't check deleted or empty files
  if [ ! -f "${REPOPATH}/${FILE}" ] || [ $(grep -c . "${REPOPATH}/${FILE}") -eq 0 ]; then
    continue
  fi
  case $extension in
    rb)
      rubocop --format emacs -F $FILE
      RET=$(($RET+$?))
    ;;
    erb)
      if [ -v $NOERB ] ; then
        erb -x -T - $FILE | ruby -c > /dev/null
        if [ $? -ne 0 ] ; then RET=$(($RET+$?)) ; echo $FILE : ERB Parse Error ; fi
      fi
    ;;
    json)
      if [ -v $NOJQ ] ; then
        cat $FILE | jq 'any' > /dev/null
        if [ $? -ne 0 ] ; then  RET=$(($RET+$?)); echo $FILE : JSON Parse Error ; fi
      fi
      ;;
    xml)
      if [ -v $NOXML ] ; then
        xmllint --noout $FILE > /dev/null
        if [ $? -ne 0 ] ; then  RET=$(($RET+$?)); echo $FILE : XML Parse Error ; fi
      fi
      ;;
    yaml|yml)
      ruby -e "require 'yaml';YAML.parse(File.open('$FILE'))" > /dev/null
      if [ $? -ne 0 ] ; then  RET=$(($RET+$?)); echo $FILE : YAML Parse Error ; fi
      ;;
    *) # ignored
      ;;
  esac
done

exit $RET