include/template_processor.php

   1 <?php
   2
   3
   4         class Template {
   5                 var $r;
   6                 var $search;
   7                 var $replace;
   8                 var $stack = array();
   9                 var $nodes = array();
  10                 var $done = false;
  11                 var $d = false;
  12                 var $lang = null;
  13
  14
  15                 private function _preg_error(){
  16                         switch(preg_last_error()){
  17                             case PREG_INTERNAL_ERROR: echo('PREG_INTERNAL_ERROR'); break;
  18                             case PREG_BACKTRACK_LIMIT_ERROR: echo('PREG_BACKTRACK_LIMIT_ERROR'); break;
  19                             case PREG_RECURSION_LIMIT_ERROR: echo('PREG_RECURSION_LIMIT_ERROR'); break;
  20                             case PREG_BAD_UTF8_ERROR: echo('PREG_BAD_UTF8_ERROR'); break;
  21                             case PREG_BAD_UTF8_OFFSET_ERROR: echo('PREG_BAD_UTF8_OFFSET_ERROR'); break;
  22                             default:
  23                                         //die("Unknown preg error.");
  24                                         return;
  25                         }
  26                         echo "<hr><pre>";
  27                         debug_print_backtrace();
  28                         die();
  29                 }
  30
  31                 private function _build_replace($r, $prefix){
  32
  33                         if(is_array($r) && count($r)) {
  34                                 foreach ($r as $k => $v ) {
  35                                         if (is_array($v))
  36                                                 $this->_build_replace($v, "$prefix$k.");
  37
  38                                         $this->search[] =  $prefix . $k;
  39                                         $this->replace[] = $v;
  40                                 }
  41                         }
  42                 }
  43
  44                 private function _push_stack(){
  45                         $this->stack[] = array($this->r, $this->search, $this->replace, $this->nodes);
  46                 }
  47                 private function _pop_stack(){
  48                         list($this->r, $this->search, $this->replace, $this->nodes) = array_pop($this->stack);
  49
  50                 }
  51
  52                 private function _get_var($name){
  53                         $keys = array_map('trim',explode(".",$name));
  54                         $val = $this->r;
  55                         foreach($keys as $k) {
  56                                 $val = $val[$k];
  57                         }
  58                         return $val;
  59                 }
  60
  61                 /**
  62                  * IF node
  63                  *
  64                  * {{ if <$var> }}...[{{ else }} ...] {{ endif }}
  65                  * {{ if <$var>==<val|$var> }}...[{{ else }} ...]{{ endif }}
  66                  * {{ if <$var>!=<val|$var> }}...[{{ else }} ...]{{ endif }}
  67                  */
  68                 private function _replcb_if($args){
  69                         if (strpos($args[2],"==")>0){
  70                                 list($a,$b) = array_map("trim",explode("==",$args[2]));
  71                                 $a = $this->_get_var($a);
  72                                 if ($b[0]=="$") $b =  $this->_get_var($b);
  73                                 $val = ($a == $b);
  74                         } else if (strpos($args[2],"!=")>0){
  75                                 list($a,$b) = explode("!=",$args[2]);
  76                                 $a = $this->_get_var($a);
  77                                 if ($b[0]=="$") $b =  $this->_get_var($b);
  78                                 $val = ($a != $b);
  79                         } else {
  80                                 $val = $this->_get_var($args[2]);
  81                         }
  82                         list($strue, $sfalse)= preg_split("|{{ *else *}}|", $args[3]);
  83                         return ($val?$strue:$sfalse);
  84                 }
  85
  86                 /**
  87                  * FOR node
  88                  *
  89                  * {{ for <$var> as $name }}...{{ endfor }}
  90                  * {{ for <$var> as $key=>$name }}...{{ endfor }}
  91                  */
  92                 private function _replcb_for($args){
  93                         $m = array_map('trim', explode(" as ", $args[2]));
  94                         list($keyname, $varname) = explode("=>",$m[1]);
  95                         if (is_null($varname)) { $varname=$keyname; $keyname=""; }
  96                         if ($m[0]=="" || $varname=="" || is_null($varname)) die("template error: 'for ".$m[0]." as ".$varname."'") ;
  97                         //$vals = $this->r[$m[0]];
  98                         $vals = $this->_get_var($m[0]);
  99                         $ret="";
 100                         if (!is_array($vals)) return $ret;
 101                         foreach ($vals as $k=>$v){
 102                                 $this->_push_stack();
 103                                 $r = $this->r;
 104                                 $r[$varname] = $v;
 105                                 if ($keyname!='') $r[$keyname] = $k;
 106                                 $ret .=  $this->replace($args[3], $r);
 107                                 $this->_pop_stack();
 108                         }
 109                         return $ret;
 110                 }
 111
 112                 /**
 113                  * INC node
 114                  *
 115                  * {{ inc <templatefile> [with $var1=$var2] }}{{ endinc }}
 116                  */
 117                 private function _replcb_inc($args){
 118                         list($tplfile, $newctx) = array_map('trim', explode("with",$args[2]));
 119                         $this->_push_stack();
 120                         $r = $this->r;
 121                         if (!is_null($newctx)) {
 122                                 list($a,$b) = array_map('trim', explode("=",$newctx));
 123                                 $r[$a] = $this->_get_var($b);
 124                         }
 125                         $this->nodes = Array();
 126                         $tpl = get_markup_template($tplfile);
 127                         $ret = $this->replace($tpl, $r);
 128                         $this->_pop_stack();
 129                         return $ret;
 130
 131                 }
 132
 133                 private function _replcb_node($m) {
 134                         $node = $this->nodes[$m[1]];
 135                         if (method_exists($this, "_replcb_".$node[1])){
 136                                 $s = call_user_func(array($this, "_replcb_".$node[1]),  $node);
 137                         } else {
 138                                 $s = "";
 139                         }
 140                         $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
 141                         return $s;
 142                 }
 143
 144                 private function _replcb($m){
 145                         //var_dump(array_map('htmlspecialchars', $m));
 146                         $this->done = false;
 147                         $this->nodes[] = (array) $m;
 148                         return "||". (count($this->nodes)-1) ."||";
 149                 }
 150
 151                 private function _build_nodes($s){
 152                         $this->done = false;
 153                         while (!$this->done){
 154                                 $this->done=true;
 155                                 $s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s);
 156                                 if ($s==Null) $this->_preg_error();
 157                         }
 158                         //({{ *else *}}[^{]*)?
 159                         krsort($this->nodes);
 160                         return $s;
 161                 }
 162
 163
 164                 public function replace($s, $r) {
 165                         $this->r = $r;
 166                         $this->search = array();
 167                         $this->replace = array();
 168
 169                         $this->_build_replace($r, "");
 170
 171                         #$s = str_replace(array("\n","\r"),array("§n§","§r§"),$s);
 172                         $s = $this->_build_nodes($s);
 173                         $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
 174                         if ($s==Null) $this->_preg_error();
 175
 176                         // remove comments block
 177                         $s = preg_replace('/{#[^#]*#}/', "" , $s);
 178
 179                         // replace strings recursively (limit to 10 loops)
 180                         $os = ""; $count=0;
 181                         while($os!=$s && $count<10){
 182                                 $os=$s; $count++;
 183                                 $s = str_replace($this->search,$this->replace, $s);
 184                         }
 185                         return template_unescape($s);
 186                 }
 187         }
 188
 189         $t = new Template;
 190
 191
 192
 193
 194 function template_escape($s) {
 195
 196         return str_replace(array('$','{{'),array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),$s);
 197
 198
 199 }
 200
 201 function template_unescape($s) {
 202
 203         return str_replace(array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),array('$','{{'),$s);
 204
 205
 206
 207 }