[Prepend commit message with Jira ticket id] The Jira key is parsed from the branch name #git #jira

commit-msg.sh

#!/bin/sh
#
# An example hook script to check the commit log message.
# Called by "git commit" with one argument, the name of the file
# that has the commit message.  The hook should exit with non-zero
# status after issuing an appropriate message if it wants to stop the
# commit.  The hook is allowed to edit the commit message file.
#
# To enable this hook, rename this file to "commit-msg".
# Uncomment the below to add a Signed-off-by line to the message.
# Doing this in a hook is a bad idea in general, but the prepare-commit-msg
# hook is more suited to it.
#
# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
# This example catches duplicate Signed-off-by lines.
# test "" = "$(grep '^Signed-off-by: ' "$1" |
# 	 sort | uniq -c | sed -e '/^[ 	]*1[ 	]/d')" || {
# 	echo >&2 Duplicate Signed-off-by lines.
# 	exit 1
# }
commit_message_file=$1
message=$(cat $commit_message_file)
first_line=$(awk 'NR==1' $commit_message_file)
if [[ -z $first_line ]]; then
  echo "Aborting commit: commit message is empty"
  exit 1;
fi
ticket="[$(git rev-parse --abbrev-ref HEAD | grep -Eo '^(\w+/)?(\w+[-_])?[0-9]+' | grep -Eo '(\w+[-])?[0-9]+' | tr "[:lower:]" "[:upper:]")]"
if [[ $ticket == "[]" || "$message" == "$ticket"* ]]; then
  exit 0;
fi
echo "$ticket $message" > $commit_message_file