* Type: outputfilter
* Name: trimwhitespace
* Date: Jan 25, 2003
* Purpose: trim leading white space and blank lines from
* template source after it gets interpreted, cleaning
* up code and saving bandwidth. Does not affect
* <>
and blocks.
* Install: Drop into the plugin directory, call
* $smarty->load_filter('output','trimwhitespace');
* from application.
* @author Monte Ohrt
* @author Contributions from Lars Noschinski
* @version 1.3
* @param string
* @param Smarty
*/
function smarty_outputfilter_trimwhitespace($source, &$smarty)
{
// Pull out the script blocks
preg_match_all("!]+>.*?!is", $source, $match);
$_script_blocks = $match[0];
$source = preg_replace("!]+>.*?!is",
'@@@SMARTY:TRIM:SCRIPT@@@', $source);
// Pull out the pre blocks
preg_match_all("!.*?
!is", $source, $match);
$_pre_blocks = $match[0];
$source = preg_replace("!.*?
!is",
'@@@SMARTY:TRIM:PRE@@@', $source);
// Pull out the textarea blocks
preg_match_all("!]+>.*?!is", $source, $match);
$_textarea_blocks = $match[0];
$source = preg_replace("!]+>.*?!is",
'@@@SMARTY: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', $source));
// replace textarea blocks
smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:TEXTAREA@@@",$_textarea_blocks, $source);
// replace pre blocks
smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:PRE@@@",$_pre_blocks, $source);
// replace script blocks
smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:SCRIPT@@@",$_script_blocks, $source);
return $source;
}
function smarty_outputfilter_trimwhitespace_replace($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;
}
?>