git_history.php

git_history.php

#!/usr/bin/env php
<?php

function findGitDir($start)
{
	$dir = $start;

	while (true) {
		$dir = realpath($dir);

		if (preg_match('@/.git$@', $dir)) {
			return $dir;
		}
		if (is_dir($dir . '/.git/')) {
			return realpath($dir . '/.git/');
		}

		$dir .= '/../';
	}
}

/* TODO: getopts */
$dir = findGitdir(getcwd());
$format = '%s (%h)';
$range = ($argc > 1) ? $argv[1] : '';

$output = array();
exec(sprintf('env GIT_DIR=%s git log --format="%s" %s', escapeshellarg($dir), $format, $range), $output);

$history = array();
foreach ($output as $line) {
	preg_match('@^\[(?P<group>.*)\](?P<subject>.*) \((?P<sha>[0-9a-f]*)\)@', $line, $m);

	if (empty($history[$m['group']])) {
		$history[$m['group']] = array();
	}
	$history[$m['group']][] = sprintf('%s (%s)', $m['subject'], $m['sha']);
}

foreach ($history as $group => $changes) {
	printf("%s: \n", $group);
	
	foreach ($changes as $change) {
		printf("- %s\n", trim($change));
	}
}