X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=include%2Ftemplate_processor.php;h=83f680f0262a43983f11bbaaf2732e95b2ef4808;hb=4ba29089d27912fc0e742fb1e1d1c12b6719c5c5;hp=d8dfbaedb109dd0746a00e918ec7e47a75af1556;hpb=c0f529cf38af78b513f93e8e58d298bb21bcc8ef;p=friendica.git

diff --git a/include/template_processor.php b/include/template_processor.php
index d8dfbaedb1..83f680f026 100644
--- a/include/template_processor.php
+++ b/include/template_processor.php
@@ -7,6 +7,20 @@
 		var $stack = array();
 		var $nodes = array();
 		var $done = false;
+		var $d = false;
+		
+		private function _preg_error(){
+			switch(preg_last_error()){
+			    case PREG_INTERNAL_ERROR: die('PREG_INTERNAL_ERROR'); break;
+			    case PREG_BACKTRACK_LIMIT_ERROR: die('PREG_BACKTRACK_LIMIT_ERROR'); break;
+			    case PREG_RECURSION_LIMIT_ERROR: die('PREG_RECURSION_LIMIT_ERROR'); break;
+			    case PREG_BAD_UTF8_ERROR: die('PREG_BAD_UTF8_ERROR'); break;
+			    case PREG_BAD_UTF8_OFFSET_ERROR: die('PREG_BAD_UTF8_OFFSET_ERROR'); break;
+			    default:
+					//die("Unknown preg error.");
+					return;
+			}
+		}
 		
 		private function _build_replace($r, $prefix){
 	
@@ -26,10 +40,11 @@
 		}
 		private function _pop_stack(){
 			list($this->r, $this->search, $this->replace, $this->nodes) = array_pop($this->stack);
+			
 		}
 		
 		private function _get_var($name){
-			$keys = array_map('trim',explode(".",$name));			
+			$keys = array_map('trim',explode(".",$name));		
 			$val = $this->r;
 			foreach($keys as $k) {
 				$val = $val[$k];
@@ -40,11 +55,26 @@
 		/**
 		 * IF node
 		 * 
-		 * {{ if <$var> }}...{{ endif }}
+		 * {{ if <$var> }}...[{{ else }} ...] {{ endif }}
+		 * {{ if <$var>==<val|$var> }}...[{{ else }} ...]{{ endif }}
+		 * {{ if <$var>!=<val|$var> }}...[{{ else }} ...]{{ endif }}
 		 */
 		private function _replcb_if($args){
-			$val = $this->_get_var($args[2]);
-			return ($val?$args[3]:"");
+			if (strpos($args[2],"==")>0){
+				list($a,$b) = array_map("trim",explode("==",$args[2]));
+				$a = $this->_get_var($a);
+				if ($b[0]=="$") $b =  $this->_get_var($b);
+				$val = ($a == $b);
+			} else if (strpos($args[2],"!=")>0){
+				list($a,$b) = explode("!=",$args[2]);
+				$a = $this->_get_var($a);
+				if ($b[0]=="$") $b =  $this->_get_var($b);
+				$val = ($a != $b);
+			} else {
+				$val = $this->_get_var($args[2]);
+			}
+			list($strue, $sfalse)= preg_split("|{{ *else *}}|", $args[3]);
+			return ($val?$strue:$sfalse);
 		}
 		
 		/**
@@ -58,7 +88,8 @@
 			list($keyname, $varname) = explode("=>",$m[1]);
 			if (is_null($varname)) { $varname=$keyname; $keyname=""; }
 			if ($m[0]=="" || $varname=="" || is_null($varname)) die("template error: 'for ".$m[0]." as ".$varname."'") ;
-			$vals = $this->r[$m[0]];
+			//$vals = $this->r[$m[0]];
+			$vals = $this->_get_var($m[0]);
 			$ret="";
 			if (!is_array($vals)) return $ret; 
 			foreach ($vals as $k=>$v){
@@ -96,13 +127,16 @@
 		private function _replcb_node($m) {
 			$node = $this->nodes[$m[1]];
 			if (method_exists($this, "_replcb_".$node[1])){
-				return call_user_func(array($this, "_replcb_".$node[1]),  $node);
+				$s = call_user_func(array($this, "_replcb_".$node[1]),  $node);
 			} else {
-				return "";
+				$s = "";
 			}
+			$s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
+			return $s;
 		}
 						
 		private function _replcb($m){
+			//var_dump(array_map('htmlspecialchars', $m));
 			$this->done = false;	
 			$this->nodes[] = (array) $m;
 			return "||". (count($this->nodes)-1) ."||";
@@ -112,8 +146,10 @@
 			$this->done = false;
 			while (!$this->done){
 				$this->done=true;
-				$s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*){{ *end\1 *}}|', array($this, "_replcb"), $s);
+				$s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s);
+				if ($s==Null) $this->_preg_error();
 			}
+			//({{ *else *}}[^{]*)?
 			krsort($this->nodes);
 			return $s;
 		}
@@ -128,8 +164,14 @@
 			#$s = str_replace(array("\n","\r"),array("§n§","§r§"),$s);
 			$s = $this->_build_nodes($s);
 			$s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
-			$s = str_replace($this->search,$this->replace, $s);
+			if ($s==Null) $this->_preg_error();
 			
+			// replace strings recursively (limit to 10 loops)
+			$os = ""; $count=0;
+			while($os!=$s && $count<10){
+				$os=$s; $count++;
+				$s = str_replace($this->search,$this->replace, $s);
+			}
 			return $s;
 		}
 	}