.git/hooks/prepare-commit-msg

prepare-commit-msg

#!/bin/bash

# Adds the JIRA issue ID to the beginning of the commit message
# if it is present in the branch name.

JIRA_ISSUE_REGEX='[A-Z]{2,}-[0-9]+'
BRANCH_NAME=$(git rev-parse --abbrev-ref HEAD)

if [[ $BRANCH_NAME =~ $JIRA_ISSUE_REGEX ]]; then
    JIRA_ISSUE="${BASH_REMATCH[0]}"

    COMMIT_MSG_FILE=$1
    if ! grep -q "$JIRA_ISSUE" "$COMMIT_MSG_FILE"; then
        sed -i.bak "1s/^/$JIRA_ISSUE: /" "$COMMIT_MSG_FILE"
    fi
fi