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	$response = new \Symfony\Component\HttpFoundation\Response;
	$response->headers->set('Content-Type', 'application/mercurial-0.1');

	$oldLang = getenv('LANG');
	$oldLanguage = getenv('LANGUAGE');
	$oldHgEnc = getenv('HGENCODING');

	putenv('LANG=C');
	putenv('LANGUAGE=C');
	putenv('HGENCODING=UTF-8');

	$options = array('--stdio');
	$forcedExtensions = array('mq' => true, 'fetch' => true, 'convert' => true, 'progress' => false);

	foreach ($forcedExtensions as $ext => $enabled) {
	$options[] = sprintf('--config extensions.%s=%s', $ext, $enabled ? '""' : '!');
	}

	$command = 'hg serve ' . implode(' ', $options);
	$cwd = $app['root'] . '/repos/test';
	$pipes = null;
	$descr = array(
	libhg_Stream::STDIN => array('pipe', 'r'),
	libhg_Stream::STDOUT => array('pipe', 'w'),
	);

	$process = proc_open($command, $descr, $pipes, $cwd);
	if (!is_resource($process)) {
	throw new \RuntimeException('Could not start command server.');
	}

	$stdin = new libhg_Stream($pipes[libhg_Stream::STDIN]);
	$stdout = new libhg_Stream($pipes[libhg_Stream::STDOUT]);

	putenv('LANG=' . $oldLang);
	putenv('LANGUAGE=' . $oldLanguage);
	putenv('HGENCODING=' . $oldHgEnc);

	$hg_args = array();
	for ($i = 1; ; $i++) {
	$header = 'HTTP_X_HGARG_' . $i;
	if (!$app['request']->server->has($header)) {
	break;
	}
	$hg_args[] = $app['request']->server->get($header);
	}
	$hg_args = implode('', $hg_args);
	parse_str($hg_args, $args);

	$app['monolog']->info(print_r($args, true));

	$commands = array(
	'batch' => array('cmds', '*'),
	'between' => array('pairs'),
	'branchmap' => array(),
	'branches' => array('nodes'),
	'capabilities' => array(),
	'changegroup' => array('roots'),
	'changegroupsubset' => array('bases heads'),
	'debugwireargs' => array('one two *'),
	'getbundle' => array('*'),
	'heads' => array(),
	'hello' => array(),
	'known' => array('nodes', '*'),
	'listkeys' => array('namespace'),
	'lookup' => array('key'),
	'pushkey' => array('namespace', 'key', 'old', 'new'),
	'stream_out' => array(''),
	'unbundle' => array('heads'),
	);

	if (!isset($commands[$cmd])) {
	$app->abort(400);
	}

	$out = array();

	$has_star = false;
	foreach ($commands[$cmd] as $arg_key) {
	if ($arg_key === '*') {
	$has_star = true;
	break;
	}

	if (isset($args[$arg_key])) {
	$value = $args[$arg_key];
	$size = strlen($value);
	$out[] = $arg_key . ' ' . $size . "\n" . $value;
	unset($args[$arg_key]);
	}
	}

	if ($has_star) {
	$count = count($args);
	$out[] = '* ' . $count . "\n";

	foreach ($args as $key => $value) {
	if (in_array($key, $commands[$cmd])) {
	continue;
	}

	$size = strlen($value);
	$out[] = $key . ' ' . $size . "\n" . $value;
	}
	}

	$out = implode('', $out);
	if (strlen($out)) {
	$out .= "\n";
	}

	$out = $cmd . "\n" . $out;

	$app['monolog']->info($out);
	$stdin->write($out);

	if ($cmd === 'getbundle') {
	$pipe = $pipes[libhg_Stream::STDOUT];
	$response->setContent("\x78\x9C" . gzdeflate(stream_get_contents($pipe)));
	} else {
	$length = (int)fgets($pipes[libhg_Stream::STDOUT]);

	if ($length != 0) {
	$response->setContent(fread($pipes[libhg_Stream::STDOUT], $length));
	}
	}

	$stdin->close();
	$stdout->close();

	proc_close($process);

	return $response;

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	asherkin
	Nov 6 2013, 10:18 PM

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