From 71751ecb8c141fe5544a32e175fc0a45165206d2 Mon Sep 17 00:00:00 2001 From: Fabrixxm Date: Fri, 14 Dec 2012 10:10:33 -0500 Subject: [PATCH] template_processor: add filter support to variables --- include/template_processor.php | 485 ++++++++++++++++++--------------- 1 file changed, 265 insertions(+), 220 deletions(-) diff --git a/include/template_processor.php b/include/template_processor.php index 4088ddab6..6c5908d92 100644 --- a/include/template_processor.php +++ b/include/template_processor.php @@ -1,250 +1,295 @@ 5.3, not certain how to code around it for unit tests -// case PREG_BAD_UTF8_OFFSET_ERROR: echo('PREG_BAD_UTF8_OFFSET_ERROR'); break; - default: - //die("Unknown preg error."); - return; - } - echo "
";
-			debug_print_backtrace();
-			die();
+define("KEY_NOT_EXISTS", '^R_key_not_Exists^');
+
+class Template {
+
+	var $r;
+	var $search;
+	var $replace;
+	var $stack = array();
+	var $nodes = array();
+	var $done = false;
+	var $d = false;
+	var $lang = null;
+	var $debug = false;
+
+	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;
+//			This is only valid for php > 5.3, not certain how to code around it for unit tests
+//			case PREG_BAD_UTF8_OFFSET_ERROR: echo('PREG_BAD_UTF8_OFFSET_ERROR'); break;
+			default:
+				//die("Unknown preg error.");
+				return;
 		}
-		
-		
-		private function _push_stack(){
-			$this->stack[] = array($this->r, $this->nodes);
+		echo "
";
+		debug_print_backtrace();
+		die();
+	}
+
+	private function _push_stack() {
+		$this->stack[] = array($this->r, $this->nodes);
+	}
+
+	private function _pop_stack() {
+		list($this->r, $this->nodes) = array_pop($this->stack);
+	}
+
+	private function _get_var($name, $retNoKey = false) {
+		$keys = array_map('trim', explode(".", $name));
+		if ($retNoKey && !array_key_exists($keys[0], $this->r))
+			return KEY_NOT_EXISTS;
+		$val = $this->r;
+		foreach ($keys as $k) {
+			$val = (isset($val[$k]) ? $val[$k] : null);
 		}
-		private function _pop_stack(){
-			list($this->r, $this->nodes) = array_pop($this->stack);
-			
+		return $val;
+	}
+
+	/**
+	 * IF node
+	 * 
+	 * {{ if <$var> }}...[{{ else }} ...] {{ endif }}
+	 * {{ if <$var>== }}...[{{ else }} ...]{{ endif }}
+	 * {{ if <$var>!= }}...[{{ else }} ...]{{ endif }}
+	 */
+	private function _replcb_if($args) {
+		if (strpos($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) = array_map("trim", 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]);
 		}
-		
-		private function _get_var($name, $retNoKey=false){
-			$keys = array_map('trim',explode(".",$name));
-			if ($retNoKey && !array_key_exists($keys[0], $this->r)) return KEY_NOT_EXISTS;
-			$val = $this->r;
-			foreach($keys as $k) {
-				$val = (isset($val[$k]) ? $val[$k] : null);
-			}
-			return $val;
+		$x = preg_split("|{{ *else *}}|", $args[3]);
+		return ( $val ? $x[0] : (isset($x[1]) ? $x[1] : ""));
+	}
+
+	/**
+	 * FOR node
+	 * 
+	 * {{ for <$var> as $name }}...{{ endfor }}
+	 * {{ for <$var> as $key=>$name }}...{{ endfor }}
+	 */
+	private function _replcb_for($args) {
+		$m = array_map('trim', explode(" as ", $args[2]));
+		$x = explode("=>", $m[1]);
+		if (count($x) == 1) {
+			$varname = $x[0];
+			$keyname = "";
+		} else {
+			list($keyname, $varname) = $x;
 		}
-		
-		/**
-		 * IF node
-		 * 
-		 * {{ if <$var> }}...[{{ else }} ...] {{ endif }}
-		 * {{ if <$var>== }}...[{{ else }} ...]{{ endif }}
-		 * {{ if <$var>!= }}...[{{ else }} ...]{{ endif }}
-		 */
-		private function _replcb_if($args){
-			if (strpos($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) = array_map("trim", 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]);
-			}
-			$x = preg_split("|{{ *else *}}|", $args[3]);
-			return ( $val ? $x[0] : (isset($x[1]) ? $x[1] : ""));
-		}
-		
-		/**
-		 * FOR node
-		 * 
-		 * {{ for <$var> as $name }}...{{ endfor }}
-		 * {{ for <$var> as $key=>$name }}...{{ endfor }}
-		 */
-		private function _replcb_for($args){
-			$m = array_map('trim', explode(" as ", $args[2]));
-			$x = explode("=>",$m[1]);
-			if (count($x) == 1) {
-				$varname = $x[0];
-				$keyname = "";
-			} else {
-				list($keyname, $varname) = $x;
-			}
-			if ($m[0]=="" || $varname=="" || is_null($varname)) die("template error: 'for ".$m[0]." as ".$varname."'") ;
-			//$vals = $this->r[$m[0]];
-			$vals = $this->_get_var($m[0]);
-			$ret="";
-			if (!is_array($vals)) return $ret; 
-			foreach ($vals as $k=>$v){
-				$this->_push_stack();
-				$r = $this->r;
-				$r[$varname] = $v;
-				if ($keyname!='') $r[$keyname] = (($k === 0) ? '0' : $k);
-				$ret .=  $this->replace($args[3], $r);
-				$this->_pop_stack();
-			}
+		if ($m[0] == "" || $varname == "" || is_null($varname))
+			die("template error: 'for " . $m[0] . " as " . $varname . "'");
+		//$vals = $this->r[$m[0]];
+		$vals = $this->_get_var($m[0]);
+		$ret = "";
+		if (!is_array($vals))
 			return $ret;
-		}
-
-		/**
-		 * INC node
-		 * 
-		 * {{ inc  [with $var1=$var2] }}{{ endinc }}
-		 */
-		private function _replcb_inc($args){
-			if (strpos($args[2],"with")) {
-				list($tplfile, $newctx) = array_map('trim', explode("with",$args[2]));
-			} else {
-				$tplfile = trim($args[2]);
-				$newctx = null;
-			}
-			
-			if ($tplfile[0]=="$") $tplfile = $this->_get_var($tplfile);
-			
+		foreach ($vals as $k => $v) {
 			$this->_push_stack();
 			$r = $this->r;
-			if (!is_null($newctx)) {
-				list($a,$b) = array_map('trim', explode("=",$newctx));
-				$r[$a] = $this->_get_var($b); 
-			}
-			$this->nodes = Array();
-			$tpl = get_markup_template($tplfile);
-			$ret = $this->replace($tpl, $r);
+			$r[$varname] = $v;
+			if ($keyname != '')
+				$r[$keyname] = (($k === 0) ? '0' : $k);
+			$ret .= $this->replace($args[3], $r);
 			$this->_pop_stack();
-			return $ret;
-			
 		}
-		
-		/**
-		 * DEBUG node
-		 * 
-		 * {{ debug $var [$var [$var [...]]] }}{{ enddebug }}
-		 * 
-		 * replace node with 
var_dump($var, $var, ...);
+ return $ret; + } + + /** + * INC node + * + * {{ inc [with $var1=$var2] }}{{ endinc }} + */ + private function _replcb_inc($args) { + if (strpos($args[2], "with")) { + list($tplfile, $newctx) = array_map('trim', explode("with", $args[2])); + } else { + $tplfile = trim($args[2]); + $newctx = null; + } + + if ($tplfile[0] == "$") + $tplfile = $this->_get_var($tplfile); + + $this->_push_stack(); + $r = $this->r; + if (!is_null($newctx)) { + list($a, $b) = array_map('trim', explode("=", $newctx)); + $r[$a] = $this->_get_var($b); + } + $this->nodes = Array(); + $tpl = get_markup_template($tplfile); + $ret = $this->replace($tpl, $r); + $this->_pop_stack(); + return $ret; + } + + /** + * DEBUG node + * + * {{ debug $var [$var [$var [...]]] }}{{ enddebug }} + * + * replace node with
var_dump($var, $var, ...);
+ */ + private function _replcb_debug($args) { + $vars = array_map('trim', explode(" ", $args[2])); + $vars[] = $args[1]; + + $ret = "
";
+		foreach ($vars as $var) {
+			$ret .= htmlspecialchars(var_export($this->_get_var($var), true));
+			$ret .= "\n";
+		}
+		$ret .= "
"; + return $ret; + } + + private function _replcb_node($m) { + $node = $this->nodes[$m[1]]; + if (method_exists($this, "_replcb_" . $node[1])) { + $s = call_user_func(array($this, "_replcb_" . $node[1]), $node); + } else { + $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) . "||"; + } + + private function _build_nodes($s) { + $this->done = false; + while (!$this->done) { + $this->done = true; + $s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s); + if ($s == Null) + $this->_preg_error(); + } + //({{ *else *}}[^{]*)? + krsort($this->nodes); + return $s; + } + + private function var_replace($s) { + $m = array(); + /** regexp: + * \$ literal $ + * (\[)? optional open square bracket + * ([a-zA-Z0-9-_]+\.?)+ var name, followed by optional + * dot, repeated at least 1 time + * (|[a-zA-Z0-9-_:]+)* pipe followed by filter name and args, zero or many + * (?(1)\]) if there was opened square bracket + * (subgrup 1), match close bracket */ - private function _replcb_debug($args){ - $vars = array_map('trim', explode(" ",$args[2])); - $vars[] = $args[1]; + if (preg_match_all('/\$(\[)?([a-zA-Z0-9-_]+\.?)+(\|[a-zA-Z0-9-_:]+)*(?(1)\])/', $s, $m)) { + foreach ($m[0] as $var) { - $ret = "
";
-			foreach ($vars as $var){
-				$ret .= htmlspecialchars(var_export( $this->_get_var($var), true ));
-				$ret .= "\n";
-			}
-			$ret .= "
"; - return $ret; - } + $exp = str_replace(array("[", "]"), array("", ""), $var); + $exptks = explode("|", $exp); - private function _replcb_node($m) { - $node = $this->nodes[$m[1]]; - if (method_exists($this, "_replcb_".$node[1])){ - $s = call_user_func(array($this, "_replcb_".$node[1]), $node); - } else { - $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) ."||"; - } - - private function _build_nodes($s){ - $this->done = false; - while (!$this->done){ - $this->done=true; - $s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s); - if ($s==Null) $this->_preg_error(); - } - //({{ *else *}}[^{]*)? - krsort($this->nodes); - return $s; - } - - - private function var_replace($s){ - $m = array(); - /** regexp: - * \$ literal $ - * (\[)? optional open square bracket - * ([a-zA-Z0-9-_]+\.?)+ var name, followed by optional - * dot, repeated at least 1 time - * (?(1)\]) if there was opened square bracket - * (subgrup 1), match close bracket - */ - if (preg_match_all('/\$(\[)?([a-zA-Z0-9-_]+\.?)+(?(1)\])/', $s,$m)){ - - foreach($m[0] as $var){ - $varn = str_replace(array("[","]"), array("",""), $var); - $val = $this->_get_var($varn, true); - if ($val!=KEY_NOT_EXISTS) - $s = str_replace($var, $val, $s); + $varn = $exptks[0]; + unset($exptks[0]); + $val = $this->_get_var($varn, true); + if ($val != KEY_NOT_EXISTS) { + /* run filters */ + /* + * Filter are in form of: + * filtername:arg:arg:arg + * + * "filtername" is function name + * "arg"s are optional, var value is appended to the end + * if one "arg"==='x' , is replaced with var value + * + * examples: + * $item.body|htmlspecialchars // escape html chars + * $item.body|htmlspecialchars|strtoupper // escape html and uppercase result + * $item.created|date:%Y %M %j // format date (created is a timestamp) + * $item.body|str_replace:cat:dog // replace all "cat" with "dog" + * $item.body|str_replace:cat:dog:x:1 // replace one "cat" with "dog" + + */ + foreach ($exptks as $filterstr) { + $filter = explode(":", $filterstr); + $filtername = $filter[0]; + unset($filter[0]); + $valkey = array_search("x", $filter); + if ($valkey === false) { + $filter[] = $val; + } else { + $filter[$valkey] = $val; + } + if (function_exists($filtername)) { + $val = call_user_func_array($filtername, $filter); + } + } + $s = str_replace($var, $val, $s); } } - - return $s; } - - public function replace($s, $r) { - $this->r = $r; - - $s = $this->_build_nodes($s); - $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s); - if ($s==Null) $this->_preg_error(); - - // 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 = $this->var_replace($s); - } - return $s; - } + return $s; } - - $t = new Template; + public function replace($s, $r) { + $this->r = $r; + $s = $this->_build_nodes($s); + $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s); + if ($s == Null) + $this->_preg_error(); + + // 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 = $this->var_replace($s); + } + return $s; + } + +} + +$t = new Template; function template_escape($s) { - return str_replace(array('$','{{'),array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),$s); - - + return str_replace(array('$', '{{'), array('!_Doll^Ars1Az_!', '!_DoubLe^BraceS4Rw_!'), $s); } function template_unescape($s) { - return str_replace(array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),array('$','{{'),$s); - - - + return str_replace(array('!_Doll^Ars1Az_!', '!_DoubLe^BraceS4Rw_!'), array('$', '{{'), $s); } +