refactor.php

<?php

function apply_transform ( $source, $transform, $params )
{
	$tokens = token_get_all($source);
	$newContent = '';
	foreach ($tokens as $token)
	{
		$newTok = $transform($token, $params);
		if (is_string($newTok))
		{
			$newContent .= $newTok;
		}
		else
		{
			$newContent .= $newTok[1];
		}
	}
	return $newContent;
}

function parse_arguments ( $argv, $aliases = array() )
{
	$progname = array_shift($argv);
	$arguments = array();
	$positional_arguments = array();
	$noMoreArgs = false;
	while (!empty($argv))
	{
		$nextArg = array_shift($argv);
		if (!$noMoreArgs && $nextArg[0] == '-')
		{
			if (strlen($nextArg) == 1)
				$positional_arguments[] = $nextArg;
			elseif ($nextArg == '--')
				$noMoreArgs = true;
			else
			{
				$parts = explode('=', substr($nextArg, 1));
				if (count($parts) == 1)
				{
					$param = substr($nextArg, 1);
					if (isset($aliases[$param]))
						$param = $aliases[$param];
					$arguments[$param] = true;
				}
				else
				{
					$param = array_shift($parts);
					if (isset($aliases[$param]))
						$param = $aliases[$param];
					$arguments[$param] = implode('=', $parts);
				}
			}
		}
		else
		{
			$positional_arguments[] = $nextArg;
		}
	}
	return array('program' => $progname, 'options' => $arguments, 'arguments' => $positional_arguments);
}

function transform_rename ( $token, $params )
{
	if (!$params['variable'] && is_array($token) && $token[0] == T_STRING && $token[1] == $params['old'])
		$token[1] = $params['new'];
	elseif ($params['variable'] && is_array($token) && $token[0] == T_VARIABLE && $token[1] == '$' . $params['old'])
		$token[1] = '$' . $params['new'];
	return $token;
}

$args = parse_arguments($argv, array('o' => 'output', 'old' => 'old-name', 'new' => 'new-name', 'r' => 'recursive', 'q' => 'quiet'));
extract($args);

$old = $options['old-name'];
$new = $options['new-name'];
$files = $arguments;
$transform_opts = array('old' => $old, 'new' => $new, 'variable' => isset($options['variable']));
while (!empty($files))
{
	$file = array_shift($files);
	if (isset($options['recursive']) && is_dir($file))
	{
		$content = scandir($file);
		foreach ($content as $obj)
		{
			if (fnmatch('*.php', $obj))
			{
				$files[] = "$file/$obj";
			}
			elseif (is_dir("$file/$obj") && $obj[0] != '.')
			{
				$files[] = "$file/$obj";
			}
		}
	}
	else
	{
		$content = file_get_contents($file);
		$newContent = apply_transform($content, 'transform_rename', $transform_opts);
		if ($content != $newContent)
		{
			file_put_contents($file, $newContent);
			if (!isset($options['quiet']))
			{
				echo "Refactored file $file\n";
			}
		}
	}
}

?>