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                 var $debug=false;
  14
  15                 private function _preg_error(){
  16                         switch(preg_last_error()){
  17                             case PREG_INTERNAL_ERROR: echo('PREG_INTERNAL_ERROR'); break;
  18                             case PREG_BACKTRACK_LIMIT_ERROR: echo('PREG_BACKTRACK_LIMIT_ERROR'); break;
  19                             case PREG_RECURSION_LIMIT_ERROR: echo('PREG_RECURSION_LIMIT_ERROR'); break;
  20                             case PREG_BAD_UTF8_ERROR: echo('PREG_BAD_UTF8_ERROR'); break;
  21                             case PREG_BAD_UTF8_OFFSET_ERROR: echo('PREG_BAD_UTF8_OFFSET_ERROR'); break;
  22                             default:
  23                                         //die("Unknown preg error.");
  24                                         return;
  25                         }
  26                         echo "<hr><pre>";
  27                         debug_print_backtrace();
  28                         die();
  29                 }
  30
  31                 private function _build_replace($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                                         } else {
  38                                                 $this->search[] =  $prefix . $k;
  39                                                 $this->replace[] = $v;
  40                                         }
  41                                 }
  42                         }
  43                 }
  44
  45                 private function _push_stack(){
  46                         $this->stack[] = array($this->r, $this->search, $this->replace, $this->nodes);
  47                 }
  48                 private function _pop_stack(){
  49                         list($this->r, $this->search, $this->replace, $this->nodes) = array_pop($this->stack);
  50
  51                 }
  52
  53                 private function _get_var($name){
  54                         $keys = array_map('trim',explode(".",$name));
  55                         $val = $this->r;
  56                         foreach($keys as $k) {
  57                                 $val = (isset($val[$k]) ? $val[$k] : null);
  58                         }
  59                         return $val;
  60                 }
  61
  62                 /**
  63                  * IF node
  64                  *
  65                  * {{ if <$var> }}...[{{ else }} ...] {{ endif }}
  66                  * {{ if <$var>==<val|$var> }}...[{{ else }} ...]{{ endif }}
  67                  * {{ if <$var>!=<val|$var> }}...[{{ else }} ...]{{ endif }}
  68                  */
  69                 private function _replcb_if($args){
  70                         if (strpos($args[2],"==")>0){
  71                                 list($a,$b) = array_map("trim",explode("==",$args[2]));
  72                                 $a = $this->_get_var($a);
  73                                 if ($b[0]=="$") $b =  $this->_get_var($b);
  74                                 $val = ($a == $b);
  75                         } else if (strpos($args[2],"!=")>0){
  76                                 list($a,$b) = explode("!=",$args[2]);
  77                                 $a = $this->_get_var($a);
  78                                 if ($b[0]=="$") $b =  $this->_get_var($b);
  79                                 $val = ($a != $b);
  80                         } else {
  81                                 $val = $this->_get_var($args[2]);
  82                         }
  83                         $x = preg_split("|{{ *else *}}|", $args[3]);
  84                         return ( $val ? $x[0] : (isset($x[1]) ? $x[1] : ""));
  85                 }
  86
  87                 /**
  88                  * FOR node
  89                  *
  90                  * {{ for <$var> as $name }}...{{ endfor }}
  91                  * {{ for <$var> as $key=>$name }}...{{ endfor }}
  92                  */
  93                 private function _replcb_for($args){
  94                         $m = array_map('trim', explode(" as ", $args[2]));
  95                         list($keyname, $varname) = explode("=>",$m[1]);
  96                         if (is_null($varname)) { $varname=$keyname; $keyname=""; }
  97                         if ($m[0]=="" || $varname=="" || is_null($varname)) die("template error: 'for ".$m[0]." as ".$varname."'") ;
  98                         //$vals = $this->r[$m[0]];
  99                         $vals = $this->_get_var($m[0]);
 100                         $ret="";
 101                         if (!is_array($vals)) return $ret;
 102                         foreach ($vals as $k=>$v){
 103                                 $this->_push_stack();
 104                                 $r = $this->r;
 105                                 $r[$varname] = $v;
 106                                 if ($keyname!='') $r[$keyname] = $k;
 107                                 $ret .=  $this->replace($args[3], $r);
 108                                 $this->_pop_stack();
 109                         }
 110                         return $ret;
 111                 }
 112
 113                 /**
 114                  * INC node
 115                  *
 116                  * {{ inc <templatefile> [with $var1=$var2] }}{{ endinc }}
 117                  */
 118                 private function _replcb_inc($args){
 119                         list($tplfile, $newctx) = array_map('trim', explode("with",$args[2]));
 120                         $this->_push_stack();
 121                         $r = $this->r;
 122                         if (!is_null($newctx)) {
 123                                 list($a,$b) = array_map('trim', explode("=",$newctx));
 124                                 $r[$a] = $this->_get_var($b);
 125                         }
 126                         $this->nodes = Array();
 127                         $tpl = get_markup_template($tplfile);
 128                         $ret = $this->replace($tpl, $r);
 129                         $this->_pop_stack();
 130                         return $ret;
 131
 132                 }
 133
 134                 private function _replcb_node($m) {
 135                         $node = $this->nodes[$m[1]];
 136                         if (method_exists($this, "_replcb_".$node[1])){
 137                                 $s = call_user_func(array($this, "_replcb_".$node[1]),  $node);
 138                         } else {
 139                                 $s = "";
 140                         }
 141                         $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
 142                         return $s;
 143                 }
 144
 145                 private function _replcb($m){
 146                         //var_dump(array_map('htmlspecialchars', $m));
 147                         $this->done = false;
 148                         $this->nodes[] = (array) $m;
 149                         return "||". (count($this->nodes)-1) ."||";
 150                 }
 151
 152                 private function _build_nodes($s){
 153                         $this->done = false;
 154                         while (!$this->done){
 155                                 $this->done=true;
 156                                 $s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s);
 157                                 if ($s==Null) $this->_preg_error();
 158                         }
 159                         //({{ *else *}}[^{]*)?
 160                         krsort($this->nodes);
 161                         return $s;
 162                 }
 163
 164         /*
 165                 private function _str_replace($str){
 166                         #$this->search,$this->replace,
 167                         $searchs = $this->search;
 168                         foreach($searchs as $search){
 169                                 $search = "|".preg_quote($search)."(\|[a-zA-Z0-9_]*)*|";
 170                                 $m = array();
 171                                 if (preg_match_all($search, $str,$m)){
 172                                         foreach ($m[0] as $match){
 173                                                 $toks = explode("|",$match);
 174                                                 $val = $this->_get_var($toks[0]);
 175                                                 for($k=1; $k<count($toks); $k++){
 176                                                         $func = $toks[$k];
 177                                                         if (function_exists($func)) $val = $func($val);
 178                                                 }
 179                                                 if (count($toks)>1){
 180                                                         $str = str_replace( $match, $val, $str);
 181                                                 }
 182                                         }
 183                                 }
 184
 185                         }
 186                         return str_replace($this->search,$this->replace, $str);
 187                 }*/
 188
 189
 190                 public function replace($s, $r) {
 191                         $this->r = $r;
 192                         $this->search = array();
 193                         $this->replace = array();
 194
 195                         $this->_build_replace($r, "");
 196
 197                         #$s = str_replace(array("\n","\r"),array("§n§","§r§"),$s);
 198                         $s = $this->_build_nodes($s);
 199
 200                         $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
 201                         if ($s==Null) $this->_preg_error();
 202
 203                         // remove comments block
 204                         $s = preg_replace('/{#[^#]*#}/', "" , $s);
 205                         // replace strings recursively (limit to 10 loops)
 206                         $os = ""; $count=0;
 207                         while($os!=$s && $count<10){
 208                                 $os=$s; $count++;
 209                                 //$s = $this->_str_replace($s);
 210                                 $s = str_replace($this->search, $this->replace, $s);
 211                         }
 212                         return template_unescape($s);
 213                 }
 214         }
 215
 216         $t = new Template;
 217
 218
 219
 220
 221 function template_escape($s) {
 222
 223         return str_replace(array('$','{{'),array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),$s);
 224
 225
 226 }
 227
 228 function template_unescape($s) {
 229
 230         return str_replace(array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),array('$','{{'),$s);
 231
 232
 233
 234 }