Parse Gitolite config (for gitlist :)

parser.php

<?php

class GitoliteConfigParser {
	public function parse($config) {
		$lines = explode("\n", $config);
		
		// remove comments and spaces
		$lines = array_filter(array_map(function ($line) {
			$line = preg_replace('/#(.*)$/', '', $line);
			return preg_replace('/^\s+/', '', $line);
		}, $lines));

		$groups = array();
		$repos = array();

		// all groups first
		foreach ($lines as $i => $line) {
			if (preg_match('/^(@[^=]+)=(.*)$/', $line, $match)) {
				$groups[trim($match[1])] = array_filter(explode(' ', trim($match[2])));
				unset($lines[$i]);
			}
		}

		$currentRepo = '';
		foreach ($lines as $line) {
			if (preg_match('/^repo\s+(.*)$/', $line, $match)) {
				$currentRepo = trim($match[1]);
			} elseif (preg_match('/^(R|RW\\+)\s+=(.*)/', $line, $match)) {
				if (!$currentRepo) throw new Exception('No current repository');
				
				$list = array_map(function ($repoOrGroup) use ($groups) {
					return isset($groups[$repoOrGroup]) ? $groups[$repoOrGroup] : $repoOrGroup;
				}, array_filter(explode(' ', trim($match[2]))));
				
				$list = array_unique(static::flattenArray($list));
				
				$repos[$currentRepo][trim($match[1])] = $list;
			}
		}

		foreach ($repos as $name => $repo) {
			if (isset($groups[$name])) {
				foreach ($groups[$name] as $entry)
					$repos[$entry] = $repo;
				unset($repos[$name]);
			}
		}
		
		return $repos;
	}
	
	public static function flattenArray(array $array) {
		$return = array();
		array_walk_recursive($array, function($a) use (&$return) { $return[] = $a; });
		return $return;
	}
}

class VisibilityLimiter {
	public function getVisible(array $repos, $user) {
		$visible = array();

		foreach ($repos as $name => $repo) {
			foreach ($repo as $type => $users) {
				if (strpos($type, 'R') === 0 && (in_array($user, $users) || in_array('@all', $users)))
					$visible[] = $name;
			}
		}

		return array_unique($visible);
	}
}

$parser = new GitoliteConfigParser();
$repos = $parser->parse(file_get_contents('gitolite.conf'));

$limiter = new VisibilityLimiter();
$visible = $limiter->getVisible($repos, 'chris');

var_dump($visible);