include/libs/template_lite/plugins/prefilter.jstrip.php

   1 <?php
   2 /*
   3  * Template Lite plugin converted from Smarty
   4  * -------------------------------------------------------------
   5  * File:     prefilter.jstrip.php
   6  * Type:     prefilter
   7  * Name:     jstrip
   8  * Version:  1.0
   9  * Date:     01 Nov 2004
  10  * Purpose:  dummy compiler to compress javascript
  11  * Install:  Drop into the plugin directory,
  12  *           call load_filter('pre','jstrip');
  13  *           from your application.
  14  * -------------------------------------------------------------
  15  */
  16
  17 function template_prefilter_jstrip($tpl_source, &$template_object)
  18 {
  19         return preg_replace_callback("/\{jstrip\}(.*?)\{\/jstrip\}/s","template_prefilter_jstrip_cb", $tpl_source);
  20 }
  21
  22 function template_prefilter_jstrip_one($code)
  23 {
  24         return template_prefilter_jstrip_cb(array("", $code), false);
  25 }
  26
  27 function template_prefilter_jstrip_cb($m, $literal=true)
  28 {
  29         $c=$m[1];
  30         $o=""; //stripped output
  31         $comment=0; //comments
  32         $string=""; //current string delimiter
  33         $last=""; //last char in the output
  34         for ($i=0;$i<strlen($c);$i++)
  35         {
  36                 //if ($i%100==0) {
  37                 //print_v(array($i,$string,$comment));
  38                 //}
  39                 $s=true; //save the character ?
  40                 //if we're in a string or phpcode
  41                 if (!empty($string))
  42                 {
  43                         //end of the string
  44                         if ($c[$i]==$string OR substr($c,$i,2)==$string)
  45                         {
  46                                 $string="";
  47                         }
  48                         //not in a string
  49                 }
  50                 else
  51                 {
  52                         //strip comments
  53                         if (substr($c,$i,2)=="//")
  54                         {
  55                                 $comment=1;
  56                         }
  57
  58                         if (substr($c,$i,2)=="/*")
  59                         {
  60                                 $comment=2;
  61                         }
  62
  63                         if ($comment==1 AND $c[$i]=="\n")
  64                         {
  65                                 $comment=0;
  66                         }
  67
  68                         if ($comment==2 AND substr($c,$i-1,2)=="*/")
  69                         {
  70                                 $comment=0;
  71                                 $s=false;
  72                         }
  73
  74                         if ($comment==0)
  75                         {
  76                                 //start a string
  77                                 if ($c[$i]=="'" OR $c[$i]=='"')
  78                                 {
  79                                         $string=$c[$i];
  80                                 }
  81
  82                                 //start phpcode
  83                                 if (substr($c,$i,2)=="<"."?")
  84                                 {
  85                                         $string="?".">";
  86                                 }
  87
  88                                 //line break
  89                                 if ($c[$i]=="\n" OR $c[$i]=="\r")
  90                                 {
  91                                         //is the current line finished ?
  92                                         // ")" and "}" is not OK ! (var x=function a() {}.......var )
  93                                         $finishers=array(";","{","(",",","\n",":");
  94                                         if (in_array($last,$finishers))
  95                                         {
  96                                                 $s=false;
  97                                         }
  98                                 }
  99
 100                                 //a space ! can we cut it ?
 101                                 if ($c[$i]==" " OR $c[$i]=="\t")
 102                                 {
 103                                         $cutme=array(" ","\t","}","{",")","(","[","]","<",">","=",";","+","-","/","*","\n",":","&");
 104                                         if (in_array($c[$i-1],$cutme) OR in_array($c[$i+1],$cutme))
 105                                         {
 106                                                 $s=false;
 107                                         }
 108                                 }
 109                                 //todo : rename vars/functions !!
 110                         }
 111                 }
 112                 //save the character
 113                 if ($s AND $comment==0)
 114                 {
 115                         $o.=$c[$i];
 116                         $last=$c[$i];
 117                 }
 118         }
 119
 120         if ($literal)
 121         {
 122                 return "{literal}".$o."{/literal}";
 123         }
 124         else
 125         {
 126                 return $o;
 127         }
 128 }
 129
 130 ?>?>