smarty/plugins/outputfilter.trimwhitespace.php
author Dan
Mon, 01 Sep 2008 16:48:47 -0400
changeset 42 774751e7faed
parent 0 c63de9eb7045
permissions -rw-r--r--
Balanced out position slider a little more so it only moves by 240px instead of the full 250 (cosmetic only)
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<?php
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/**
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 * Smarty plugin
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 * @package Smarty
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 * @subpackage plugins
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 */
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/**
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 * Smarty trimwhitespace outputfilter plugin
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 *
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 * File:     outputfilter.trimwhitespace.php<br>
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 * Type:     outputfilter<br>
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 * Name:     trimwhitespace<br>
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 * Date:     Jan 25, 2003<br>
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 * Purpose:  trim leading white space and blank lines from
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 *           template source after it gets interpreted, cleaning
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 *           up code and saving bandwidth. Does not affect
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 *           <<PRE>></PRE> and <SCRIPT></SCRIPT> blocks.<br>
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 * Install:  Drop into the plugin directory, call
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 *           <code>$smarty->load_filter('output','trimwhitespace');</code>
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 *           from application.
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 * @author   Monte Ohrt <monte at ohrt dot com>
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 * @author Contributions from Lars Noschinski <lars@usenet.noschinski.de>
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 * @version  1.3
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 * @param string
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 * @param Smarty
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 */
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function smarty_outputfilter_trimwhitespace($source, &$smarty)
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{
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    // Pull out the script blocks
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    preg_match_all("!<script[^>]+>.*?</script>!is", $source, $match);
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    $_script_blocks = $match[0];
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    $source = preg_replace("!<script[^>]+>.*?</script>!is",
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                           '@@@SMARTY:TRIM:SCRIPT@@@', $source);
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    // Pull out the pre blocks
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    preg_match_all("!<pre>.*?</pre>!is", $source, $match);
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    $_pre_blocks = $match[0];
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    $source = preg_replace("!<pre>.*?</pre>!is",
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                           '@@@SMARTY:TRIM:PRE@@@', $source);
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    // Pull out the textarea blocks
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    preg_match_all("!<textarea[^>]+>.*?</textarea>!is", $source, $match);
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    $_textarea_blocks = $match[0];
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    $source = preg_replace("!<textarea[^>]+>.*?</textarea>!is",
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                           '@@@SMARTY:TRIM:TEXTAREA@@@', $source);
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    // remove all leading spaces, tabs and carriage returns NOT
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    // preceeded by a php close tag.
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    $source = trim(preg_replace('/((?<!\?>)\n)[\s]+/m', '\1', $source));
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    // replace textarea blocks
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    smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:TEXTAREA@@@",$_textarea_blocks, $source);
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    // replace pre blocks
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    smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:PRE@@@",$_pre_blocks, $source);
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    // replace script blocks
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    smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:SCRIPT@@@",$_script_blocks, $source);
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    return $source;
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}
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function smarty_outputfilter_trimwhitespace_replace($search_str, $replace, &$subject) {
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    $_len = strlen($search_str);
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    $_pos = 0;
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    for ($_i=0, $_count=count($replace); $_i<$_count; $_i++)
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        if (($_pos=strpos($subject, $search_str, $_pos))!==false)
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            $subject = substr_replace($subject, $replace[$_i], $_pos, $_len);
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        else
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            break;
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}
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?>