release.sh

#!/bin/bash

usage(){
	echo "Usage: $0 -v <desired version> -g <gpg password>"
	echo "Or if you want to be asked fro GPG password without printing to console: $0 -v <desired version>"
	exit 1
}

while getopts ":hv:g:" opt
do
   case ${opt} in
       v)
           version=${OPTARG}
           ;;
       g)
           gpg_pass=${OPTARG}
           ;;
       h)
           usage
           exit 0
           ;;

       \?)
           echo -e "Invalid option: -${OPTARG}"
           exit 1
           ;;

       :)
           echo -e "Option -${OPTARG} require argument."
           exit 2
           ;;
   esac
done

shift $(( ${OPTIND} - 1 ))

if [ $# -ne 0 ]
then
   echo "There are unexpected parameters!" 1>&2
   usage
   exit 1
fi

if [ -z "${version}" ]
then
   echo "No version given!"
   usage
   exit 1
fi

if [ -z "${gpg_pass}" ]
then
   echo "Enter gpg password: "
   read -s gpg_pass
   if [ -z "${gpg_pass}" ]
   then
      echo "No gpg password given!"
      usage
      exit 1
   fi
fi

sed -i.bak "s/\(<version>\)[0-9]*\.[0-9]*\.[0-9]*\(<\/version>\)/\1${version}\2/" README.md && rm -f README.md.bak
git commit -a -m "bump version"

mvn --batch-mode release:prepare release:perform -DreleaseVersion=${version} -Darguments="-Dgpg.passphrase=${gpg_pass}" 
mvnRetVal=$?
if [ $mvnRetVal -ne 0 ]; then
    echo "Mvn build failed - please fix it and try to release again"
    echo "Removing last commit '$(git log -1 --pretty="%h %s")'"
    git reset --hard HEAD~1
    exit $mvnRetVal
fi

git push origin --tags HEAD