prepare-commit-msg

#!/usr/bin/php
<?php

# Git Prepare Commit Message Hook Script
#
# Location: <repository>/.git/hooks/prepare-commit-msg
#
# This script will automatically add the correct
# Pivotal Ticket ID to the beginning of each commit message
# When the branch ID is starts with the Pivotal Message ID.
# It can be overridden if specified in the message.
#
# Example:
#
# 1234567_branch_name => '[#1234567] commit message'
#
# @author Tamas Kalman <[email protected]>

$messageFile = $argv[1];
$message = file_get_contents($messageFile);

$currentBranchName = exec('git rev-parse --abbrev-ref HEAD');
print($currentBranchName);
$branchPivotalPattern = '/^([0-9]{1,16})-/';
preg_match($branchPivotalPattern, $currentBranchName, $matches);
$branchPivotalId = (isset($matches[1])) ? $matches[1] : null;
if ($branchPivotalId !== null) {
    $message = sprintf('[#%s] %s', $branchPivotalId, $message);
    file_put_contents($messageFile, $message);
}