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[friendica.git] / include / template_processor.php

diff --git a/include/template_processor.php b/include/template_processor.php
index efdfbaecb78a73fb61bdf90c4b259015bbfe49c6..25f7703a2192cfe4b41a76c958c35514bb75fe45 100644 (file)
--- a/include/template_processor.php
+++ b/include/template_processor.php
@@ -1,5 +1,6 @@
 <?php
 
+
        class Template {
                var $r;
                var $search;
@@ -7,6 +8,25 @@
                var $stack = array();
                var $nodes = array();
                var $done = false;
+               var $d = false;
+               var $lang = null;
+               
+               
+               private function _preg_error(){
+                       switch(preg_last_error()){
+                           case PREG_INTERNAL_ERROR: echo('PREG_INTERNAL_ERROR'); break;
+                           case PREG_BACKTRACK_LIMIT_ERROR: echo('PREG_BACKTRACK_LIMIT_ERROR'); break;
+                           case PREG_RECURSION_LIMIT_ERROR: echo('PREG_RECURSION_LIMIT_ERROR'); break;
+                           case PREG_BAD_UTF8_ERROR: echo('PREG_BAD_UTF8_ERROR'); break;
+                           case PREG_BAD_UTF8_OFFSET_ERROR: echo('PREG_BAD_UTF8_OFFSET_ERROR'); break;
+                           default:
+                                       //die("Unknown preg error.");
+                                       return;
+                       }
+                       echo "<hr><pre>";
+                       debug_print_backtrace();
+                       die();
+               }
                
                private function _build_replace($r, $prefix){
        
@@ -26,10 +46,11 @@
                }
                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 +61,26 @@
                /**
                 * 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 +94,8 @@
                        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 +133,16 @@
                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) ."||";
@@ -112,26 +152,56 @@
                        $this->done = false;
                        while (!$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 $s;
                }
-               
+
+       
                public function replace($s, $r) {
                        $this->r = $r;
                        $this->search = array();
                        $this->replace = array();
-       
+
                        $this->_build_replace($r, "");
                        
                        #$s = str_replace(array("\n","\r"),array("§n§","§r§"),$s);
                        $s = $this->_build_nodes($s);
+
                        $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
-                       $s = str_replace($this->search,$this->replace, (string) $s);
+                       if ($s==Null) $this->_preg_error();
                        
-                       return $s;
+                       // remove comments block
+                       $s = preg_replace('/{#[^#]*#}/', "" , $s);
+                       // 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, $s);
+                       }
+                       return template_unescape($s);
                }
        }
        
        $t = new Template;
+
+
+
+
+function template_escape($s) {
+
+       return str_replace(array('$','{{'),array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),$s);
+
+
+}
+
+function template_unescape($s) {
+
+       return str_replace(array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),array('$','{{'),$s);
+
+
+
+}