Gitlab update hook to rejct tag if extension <version> is different than tag

update

#!/bin/bash

# Git arguments
refname="$1"
oldrev="$2"
newrev="$3"

log() { printf '%s\n' "$*"; }
error() { log "ERROR: $*" >&2; }
fatal() { error "$*"; exit 1; }

get_repo_name(){
  if [ $(git rev-parse --is-bare-repository) = true ]
  then
    REPOSITORY=$(basename "$PWD")
    REPOSITORY=${REPOSITORY%.git}
  else
    REPOSITORY=$(basename $(readlink -nf "$PWD"/..))
  fi
  echo "REPOSITORY is $REPOSITORY"
}

check_version(){
  TYPE="$1"
  if [ "$TYPE" == "civicrm" ]; then
    FILENAME="info.xml"
  elif [ "$TYPE" == "drupal" ]; then
    FILENAME="${REPOSITORY}.info"
  fi

  OUTPUT=$(git ls-tree --name-only $newrev ${FILENAME})

  if [ "$OUTPUT" == "$FILENAME" ]; then
    echo "${TYPE} component found. Checking version <==> tag"
    TAG=${refname##refs/tags/}

    if [ "$TYPE" == "civicrm" ]; then
      VERSION=$(git cat-file -p $newrev:${FILENAME} | grep -oP '(?<=<version>)[^<]*')
    elif [ "$TYPE" == "drupal" ]; then
      VERSION=$(git cat-file -p $newrev:${FILENAME} | awk -F "=" '/version/ {print $2}' | tr -d ' ' | tr -d \'\")
    fi

    if [ "$VERSION" != "$TAG" ]; then
      fatal "${FILENAME} version <${VERSION}> doesn't match with tag <${TAG}>"
    else
      echo "Check OK"
      exit 0
    fi
  fi
}

# --- Safety check
if [ -z "$GIT_DIR" ]; then
  echo "Don't run this script from the command line." >&2
  echo " (if you want, you could supply GIT_DIR then run" >&2
  echo "  $0 <ref> <oldrev> <newrev>)" >&2
  exit 1
fi

if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then
  echo "usage: $0 <ref> <oldrev> <newrev>" >&2
  exit 1
fi

case "$refname" in
  refs/tags/*)
    echo "              iXiam Git Hooks"
    echo "=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~"
    get_repo_name
    check_version "civicrm"
    check_version "drupal"
    ;;
esac

# --- Finished
exit 0