git commit helper for my current job

refscommit

#! /usr/bin/env php
<?php
// filename: refscommit

/**
 * Our git approach is to name branches like "feature/123-description" and commits like 
 * "refs #123 commitmessage".
 * This scripts prepends "refs #number " to the commit message if current git branch is 
 * "feature/number.*". 
 * So it helps you by inserting your feature number into the commit message.
 * Use it as `refscommit commit_message`.
 */

function get_first_line($command) {
	$output = array();
	$status = 0;
	exec($command, $output, $status);
	if ($status > 0)
		throw new Exception('Command `'.$command.'` returned status '.$status, 1);
	return $output[0];
}

function get_feature_number() {
	$line = get_first_line('git branch');
	$matches = array();
	if (!preg_match('/^\*\sfeature\/(\d+).+$/', $line, $matches)) 
		throw new Exception("Can't find the feature number", 1);
	return $matches[1];
}

if (!$argv[1]) {
	echo("Usage: refscommit commit_message\n");
	exit(1);
}

$feature_number = get_feature_number();

$commitcommand = "git commit -m \"refs #$feature_number {$argv[1]}\"";

echo "Executing `$commitcommand`\n";
passthru($commitcommand);