gluon-web-remote

Web remote Administration for big size of gluon routers
git clone git://archive.git.mtrnord.blog/MTRNord/gluon-web-remote.git
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outputfilter.trimwhitespace.php (3487B)

      1 <?php
      2 /**
      3  * Smarty plugin
      4  *
      5  * @package    Smarty
      6  * @subpackage PluginsFilter
      7  */
      8 
      9 /**
     10  * Smarty trimwhitespace outputfilter plugin
     11  * Trim unnecessary whitespace from HTML markup.
     12  *
     13  * @author   Rodney Rehm
     14  *
     15  * @param string $source input string
     16  *
     17  * @return string filtered output
     18  * @todo     substr_replace() is not overloaded by mbstring.func_overload - so this function might fail!
     19  */
     20 function smarty_outputfilter_trimwhitespace($source)
     21 {
     22     $store = array();
     23     $_store = 0;
     24     $_offset = 0;
     25 
     26     // Unify Line-Breaks to \n
     27     $source = preg_replace("/\015\012|\015|\012/", "\n", $source);
     28 
     29     // capture Internet Explorer Conditional Comments
     30     if (preg_match_all('#<!--\[[^\]]+\]>.*?<!\[[^\]]+\]-->#is', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
     31         foreach ($matches as $match) {
     32             $store[] = $match[0][0];
     33             $_length = strlen($match[0][0]);
     34             $replace = '@!@SMARTY:' . $_store . ':SMARTY@!@';
     35             $source = substr_replace($source, $replace, $match[0][1] - $_offset, $_length);
     36 
     37             $_offset += $_length - strlen($replace);
     38             $_store ++;
     39         }
     40     }
     41 
     42     // Strip all HTML-Comments
     43     // yes, even the ones in <script> - see http://stackoverflow.com/a/808850/515124
     44     $source = preg_replace('#<!--.*?-->#ms', '', $source);
     45 
     46     // capture html elements not to be messed with
     47     $_offset = 0;
     48     if (preg_match_all('#(<script[^>]*>.*?</script[^>]*>)|(<textarea[^>]*>.*?</textarea[^>]*>)|(<pre[^>]*>.*?</pre[^>]*>)#is', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
     49         foreach ($matches as $match) {
     50             $store[] = $match[0][0];
     51             $_length = strlen($match[0][0]);
     52             $replace = '@!@SMARTY:' . $_store . ':SMARTY@!@';
     53             $source = substr_replace($source, $replace, $match[0][1] - $_offset, $_length);
     54 
     55             $_offset += $_length - strlen($replace);
     56             $_store ++;
     57         }
     58     }
     59 
     60     $expressions = array(
     61         // replace multiple spaces between tags by a single space
     62         // can't remove them entirely, becaue that might break poorly implemented CSS display:inline-block elements
     63         '#(:SMARTY@!@|>)\s+(?=@!@SMARTY:|<)#s'                            => '\1 \2',
     64         // remove spaces between attributes (but not in attribute values!)
     65         '#(([a-z0-9]\s*=\s*("[^"]*?")|(\'[^\']*?\'))|<[a-z0-9_]+)\s+([a-z/>])#is' => '\1 \5',
     66         // note: for some very weird reason trim() seems to remove spaces inside attributes.
     67         // maybe a \0 byte or something is interfering?
     68         '#^\s+<#Ss'                                                       => '<',
     69         '#>\s+$#Ss'                                                       => '>',
     70     );
     71 
     72     $source = preg_replace(array_keys($expressions), array_values($expressions), $source);
     73     // note: for some very weird reason trim() seems to remove spaces inside attributes.
     74     // maybe a \0 byte or something is interfering?
     75     // $source = trim( $source );
     76 
     77     $_offset = 0;
     78     if (preg_match_all('#@!@SMARTY:([0-9]+):SMARTY@!@#is', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
     79         foreach ($matches as $match) {
     80             $_length = strlen($match[0][0]);
     81             $replace = $store[$match[1][0]];
     82             $source = substr_replace($source, $replace, $match[0][1] + $_offset, $_length);
     83 
     84             $_offset += strlen($replace) - $_length;
     85             $_store ++;
     86         }
     87     }
     88 
     89     return $source;
     90 }