include/template_processor.php

   1 <?php
   2         define ("KEY_NOT_EXISTS", '^R_key_not_Exists^');
   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, $this->nodes);
  47                 }
  48                 private function _pop_stack(){
  49                         list($this->r, $this->nodes) = array_pop($this->stack);
  50
  51                 }
  52
  53                 private function _get_var($name, $retNoKey=false){
  54                         $keys = array_map('trim',explode(".",$name));
  55                         if ($retNoKey && !array_key_exists($keys[0], $this->r)) return KEY_NOT_EXISTS;
  56                         $val = $this->r;
  57                         foreach($keys as $k) {
  58                                 $val = (isset($val[$k]) ? $val[$k] : null);
  59                         }
  60                         return $val;
  61                 }
  62
  63                 /**
  64                  * IF node
  65                  *
  66                  * {{ if <$var> }}...[{{ else }} ...] {{ endif }}
  67                  * {{ if <$var>==<val|$var> }}...[{{ else }} ...]{{ endif }}
  68                  * {{ if <$var>!=<val|$var> }}...[{{ else }} ...]{{ endif }}
  69                  */
  70                 private function _replcb_if($args){
  71                         if (strpos($args[2],"==")>0){
  72                                 list($a,$b) = array_map("trim",explode("==",$args[2]));
  73                                 $a = $this->_get_var($a);
  74                                 if ($b[0]=="$") $b =  $this->_get_var($b);
  75                                 $val = ($a == $b);
  76                         } else if (strpos($args[2],"!=")>0){
  77                                 list($a,$b) = explode("!=",$args[2]);
  78                                 $a = $this->_get_var($a);
  79                                 if ($b[0]=="$") $b =  $this->_get_var($b);
  80                                 $val = ($a != $b);
  81                         } else {
  82                                 $val = $this->_get_var($args[2]);
  83                         }
  84                         $x = preg_split("|{{ *else *}}|", $args[3]);
  85                         return ( $val ? $x[0] : (isset($x[1]) ? $x[1] : ""));
  86                 }
  87
  88                 /**
  89                  * FOR node
  90                  *
  91                  * {{ for <$var> as $name }}...{{ endfor }}
  92                  * {{ for <$var> as $key=>$name }}...{{ endfor }}
  93                  */
  94                 private function _replcb_for($args){
  95                         $m = array_map('trim', explode(" as ", $args[2]));
  96                         list($keyname, $varname) = explode("=>",$m[1]);
  97                         if (is_null($varname)) { $varname=$keyname; $keyname=""; }
  98                         if ($m[0]=="" || $varname=="" || is_null($varname)) die("template error: 'for ".$m[0]." as ".$varname."'") ;
  99                         //$vals = $this->r[$m[0]];
 100                         $vals = $this->_get_var($m[0]);
 101                         $ret="";
 102                         if (!is_array($vals)) return $ret;
 103                         foreach ($vals as $k=>$v){
 104                                 $this->_push_stack();
 105                                 $r = $this->r;
 106                                 $r[$varname] = $v;
 107                                 if ($keyname!='') $r[$keyname] = $k;
 108                                 $ret .=  $this->replace($args[3], $r);
 109                                 $this->_pop_stack();
 110                         }
 111                         return $ret;
 112                 }
 113
 114                 /**
 115                  * INC node
 116                  *
 117                  * {{ inc <templatefile> [with $var1=$var2] }}{{ endinc }}
 118                  */
 119                 private function _replcb_inc($args){
 120                         if (strpos($args[2],"with")) {
 121                                 list($tplfile, $newctx) = array_map('trim', explode("with",$args[2]));
 122                         } else {
 123                                 $tplfile = trim($args[2]);
 124                                 $newctx = null;
 125                         }
 126
 127                         if ($tplfile[0]=="$") $tplfile = $this->_get_var($tplfile);
 128
 129                         $this->_push_stack();
 130                         $r = $this->r;
 131                         if (!is_null($newctx)) {
 132                                 list($a,$b) = array_map('trim', explode("=",$newctx));
 133                                 $r[$a] = $this->_get_var($b);
 134                         }
 135                         $this->nodes = Array();
 136                         $tpl = get_markup_template($tplfile);
 137                         $ret = $this->replace($tpl, $r);
 138                         $this->_pop_stack();
 139                         return $ret;
 140
 141                 }
 142
 143                 private function _replcb_node($m) {
 144                         $node = $this->nodes[$m[1]];
 145                         if (method_exists($this, "_replcb_".$node[1])){
 146                                 $s = call_user_func(array($this, "_replcb_".$node[1]),  $node);
 147                         } else {
 148                                 $s = "";
 149                         }
 150                         $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
 151                         return $s;
 152                 }
 153
 154                 private function _replcb($m){
 155                         //var_dump(array_map('htmlspecialchars', $m));
 156                         $this->done = false;
 157                         $this->nodes[] = (array) $m;
 158                         return "||". (count($this->nodes)-1) ."||";
 159                 }
 160
 161                 private function _build_nodes($s){
 162                         $this->done = false;
 163                         while (!$this->done){
 164                                 $this->done=true;
 165                                 $s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s);
 166                                 if ($s==Null) $this->_preg_error();
 167                         }
 168                         //({{ *else *}}[^{]*)?
 169                         krsort($this->nodes);
 170                         return $s;
 171                 }
 172
 173         /*
 174                 private function _str_replace($str){
 175                         #$this->search,$this->replace,
 176                         $searchs = $this->search;
 177                         foreach($searchs as $search){
 178                                 $search = "|".preg_quote($search)."(\|[a-zA-Z0-9_]*)*|";
 179                                 $m = array();
 180                                 if (preg_match_all($search, $str,$m)){
 181                                         foreach ($m[0] as $match){
 182                                                 $toks = explode("|",$match);
 183                                                 $val = $this->_get_var($toks[0]);
 184                                                 for($k=1; $k<count($toks); $k++){
 185                                                         $func = $toks[$k];
 186                                                         if (function_exists($func)) $val = $func($val);
 187                                                 }
 188                                                 if (count($toks)>1){
 189                                                         $str = str_replace( $match, $val, $str);
 190                                                 }
 191                                         }
 192                                 }
 193
 194                         }
 195                         return str_replace($this->search,$this->replace, $str);
 196                 }*/
 197
 198                 private function var_replace($s){
 199                         $m = array();
 200                         if (preg_match_all('/\$([a-zA-Z0-9-_]+\.*)+/', $s,$m)){
 201                                 foreach($m[0] as $var){
 202                                         $val = $this->_get_var($var, true);
 203                                         if ($val!=KEY_NOT_EXISTS)
 204                                                 $s = str_replace($var, $val, $s);
 205                                 }
 206                         }
 207                         return $s;
 208                 }
 209
 210                 public function replace($s, $r) {
 211                         $this->r = $r;
 212                         /*$this->search = array();
 213                         $this->replace = array();*/
 214
 215                         //$this->_build_replace($r, "");
 216
 217                         #$s = str_replace(array("\n","\r"),array("§n§","§r§"),$s);
 218                         $s = $this->_build_nodes($s);
 219
 220                         $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
 221                         if ($s==Null) $this->_preg_error();
 222
 223                         // remove comments block
 224                         $s = preg_replace('/{#[^#]*#}/', "" , $s);
 225                         // replace strings recursively (limit to 10 loops)
 226                         $os = ""; $count=0;
 227                         while($os!=$s && $count<10){
 228                                 $os=$s; $count++;
 229                                 //$s = $this->_str_replace($s);
 230                                 $s = $this->var_replace($s);
 231                                 //$s = str_replace($this->search, $this->replace, $s);
 232                         }
 233                         return template_unescape($s);
 234                 }
 235         }
 236
 237         $t = new Template;
 238
 239
 240
 241
 242 function template_escape($s) {
 243
 244         return str_replace(array('$','{{'),array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),$s);
 245
 246
 247 }
 248
 249 function template_unescape($s) {
 250
 251         return str_replace(array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),array('$','{{'),$s);
 252
 253
 254
 255 }