/include/Savant/Savant2/Savant2_Filter_trimwhitespace.php
PHP | 104 lines | 40 code | 14 blank | 50 comment | 3 complexity | b636d5a1f4ba0a9b5324ffb3d10cbdb9 MD5 | raw file
Possible License(s): LGPL-2.1, GPL-2.0, BSD-3-Clause, LGPL-2.0, CC-BY-SA-3.0, AGPL-1.0
- <?php
- /**
- * Base filter class.
- */
- require_once 'Savant2/Filter.php';
- /**
- *
- * Remove extra white space within the text.
- *
- * $Id: Savant2_Filter_trimwhitespace.php,v 1.2 2004/10/28 20:51:27 pmjones Exp $
- *
- * @author Monte Ohrt <monte@ispi.net>
- *
- * @author Contributions from Lars Noschinski <lars@usenet.noschinski.de>
- *
- * @author Converted to a Savant2 filter by Paul M. Jones
- * <pmjones@ciaweb.net>
- *
- * @license http://www.gnu.org/copyleft/lesser.html LGPL
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as
- * published by the Free Software Foundation; either version 2.1 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- */
- class Savant2_Filter_trimwhitespace extends Savant2_Filter {
- /**
- *
- * Removes extra white space within the text.
- *
- * Trim leading white space and blank lines from template source after it
- * gets interpreted, cleaning up code and saving bandwidth. Does not
- * affect <PRE>></PRE> and <SCRIPT></SCRIPT> blocks.<br>
- *
- * @access public
- *
- * @param string &$source The source text to be filtered.
- *
- */
-
- function filter(&$source)
- {
- // Pull out the script blocks
- preg_match_all("!<script[^>]+>.*?</script>!is", $source, $match);
- $_script_blocks = $match[0];
- $source = preg_replace("!<script[^>]+>.*?</script>!is",
- '@@@SAVANT:TRIM:SCRIPT@@@', $source);
-
- // Pull out the pre blocks
- preg_match_all("!<pre[^>]+>.*?</pre>!is", $source, $match);
- $_pre_blocks = $match[0];
- $source = preg_replace("!<pre[^>]+>.*?</pre>!is",
- '@@@SAVANT:TRIM:PRE@@@', $source);
-
- // Pull out the textarea blocks
- preg_match_all("!<textarea[^>]+>.*?</textarea>!is", $source, $match);
- $_textarea_blocks = $match[0];
- $source = preg_replace("!<textarea[^>]+>.*?</textarea>!is",
- '@@@SAVANT:TRIM:TEXTAREA@@@', $source);
-
- // remove all leading spaces, tabs and carriage returns NOT
- // preceeded by a php close tag.
- $source = trim(preg_replace('/((?<!\?>)\n)[\s]+/m', '\1', $source));
-
- // replace script blocks
- Savant2_Filter_trimwhitespace::_replace(
- "@@@SAVANT:TRIM:SCRIPT@@@",$_script_blocks, $source);
-
- // replace pre blocks
- Savant2_Filter_trimwhitespace::_replace(
- "@@@SAVANT:TRIM:PRE@@@",$_pre_blocks, $source);
-
- // replace textarea blocks
- Savant2_Filter_trimwhitespace::_replace(
- "@@@SAVANT:TRIM:TEXTAREA@@@",$_textarea_blocks, $source);
-
- return $source;
- }
- function _replace($search_str, $replace, &$subject)
- {
- $_len = strlen($search_str);
- $_pos = 0;
- for ($_i=0, $_count=count($replace); $_i<$_count; $_i++) {
- if (($_pos=strpos($subject, $search_str, $_pos))!==false) {
- $subject = substr_replace($subject, $replace[$_i], $_pos, $_len);
- } else {
- break;
- }
- }
- }
- }
- ?>