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<?php
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2004 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 3.0 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/3_0.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Aidan Lister <aidan@php.net> |
// +----------------------------------------------------------------------+
//
// $Id: php_strip_whitespace.php,v 1.10 2005/01/26 04:55:13 aidan Exp $
/**
* Replace php_strip_whitespace()
*
* @category PHP
* @package PHP_Compat
* @link http://php.net/function.php_strip_whitespace
* @author Aidan Lister <aidan@php.net>
* @version $Revision: 1.10 $
* @since PHP 5
* @require PHP 4.0.0 (user_error) + Tokenizer extension
*/
if (!function_exists('php_strip_whitespace')) {
function php_strip_whitespace($file)
{
// Sanity check
if (!is_scalar($file)) {
user_error('php_strip_whitespace() expects parameter 1 to be string, ' .
gettype($file) . ' given', E_USER_WARNING);
return;
}
// Load file / tokens
$source = implode('', file($file));
$tokens = token_get_all($source);
// Init
$source = '';
$was_ws = false;
// Process
foreach ($tokens as $token) {
if (is_string($token)) {
// Single character tokens
$source .= $token;
} else {
list($id, $text) = $token;
switch ($id) {
// Skip all comments
case T_COMMENT:
case T_ML_COMMENT:
case T_DOC_COMMENT:
break;
// Remove whitespace
case T_WHITESPACE:
// We don't want more than one whitespace in a row replaced
if ($was_ws !== true) {
$source .= ' ';
}
$was_ws = true;
break;
default:
$was_ws = false;
$source .= $text;
break;
}
}
}
return $source;
}
}
?>
|