template engine rework

- use smarty3 as default engine
- new pluggable template engine system

include/friendica_smarty.php

@@ -1,9 +1,9 @@
 <?php
 
+require_once "object/TemplateEngine.php";
 require_once("library/Smarty/libs/Smarty.class.php");
 
 class FriendicaSmarty extends Smarty {
-
 	public $filename;
 
 	function __construct() {
@@ -37,7 +37,33 @@ class FriendicaSmarty extends Smarty {
 		}
 		return $this->fetch('file:' . $this->filename);
 	}
+	
+
 }
 
-
-
+class FriendicaSmartyEngine implements ITemplateEngine {
+	static $name ="smarty3";
+	// ITemplateEngine interface
+	public function replace_macros($s, $r) {
+		$template = '';
+		if(gettype($s) === 'string') {
+			$template = $s;
+			$s = new FriendicaSmarty();
+		}
+		foreach($r as $key=>$value) {
+			if($key[0] === '$') {
+				$key = substr($key, 1);
+			}
+			$s->assign($key, $value);
+		}
+		return $s->parsed($template);		
+	}
+	
+	public function get_template_file($file, $root=''){
+		$a = get_app();
+		$template_file = get_template_file($a, 'smarty3/' . $file, $root);
+		$template = new FriendicaSmarty();
+		$template->filename = $template_file;
+		return $template;
+	}
+}

include/template_processor.php

@@ -1,9 +1,11 @@
 <?php
+require_once 'object/TemplateEngine.php';
 
 define("KEY_NOT_EXISTS", '^R_key_not_Exists^');
 
-class Template {
-
+class Template implements ITemplateEngine {
+	static $name ="internal";
+	
 	var $r;
 	var $search;
 	var $replace;
@@ -256,7 +258,8 @@ class Template {
 		return $s;
 	}
 
-	public function replace($s, $r) {
+	// TemplateEngine interface
+	public function replace_macros($s, $r) {
 		$this->r = $r;
 
 		// remove comments block
@@ -276,12 +279,18 @@ class Template {
 			$count++;
 			$s = $this->var_replace($s);
 		}
-		return $s;
+		return template_unescape($s);
 	}
-
+	
+	public function get_template_file($file, $root='') {
+		$a = get_app();
+		$template_file = get_template_file($a, $file, $root);
+		$content = file_get_contents($template_file);
+		return $content;		
+	}
+	
 }
 
-$t = new Template;
 
 function template_escape($s) {
 

include/text.php

@@ -15,39 +15,20 @@ if(! function_exists('replace_macros')) {
 /**
  * This is our template processor
  * 
- * @global Template $t
  * @param string|FriendicaSmarty $s the string requiring macro substitution, 
  *									or an instance of FriendicaSmarty
  * @param array $r key value pairs (search => replace)
  * @return string substituted string
  */
 function replace_macros($s,$r) {
-	global $t;
 	
 	$stamp1 = microtime(true);
 
 	$a = get_app();
 
-	if($a->theme['template_engine'] === 'smarty3') {
-		$template = '';
-		if(gettype($s) === 'string') {
-			$template = $s;
-			$s = new FriendicaSmarty();
-		}
-		foreach($r as $key=>$value) {
-			if($key[0] === '$') {
-				$key = substr($key, 1);
-			}
-			$s->assign($key, $value);
-		}
-		$output = $s->parsed($template);
-	}
-	else {
-		$r =  $t->replace($s,$r);
+	$t = $a->template_engine();
+	$output = $t->replace_macros($s,$r);
 
-		$output = template_unescape($r);
-	}
-	$a = get_app();
 	$a->save_timestamp($stamp1, "rendering");
 
 	return $output;
@@ -582,6 +563,14 @@ function get_markup_template($s, $root = '') {
 	$stamp1 = microtime(true);
 
 	$a = get_app();
+	$t = $a->template_engine();
+	
+	$template = $t->get_template_file($s, $root);
+	
+	$a->save_timestamp($stamp1, "file");
+	
+	return $template;
+	/*
 
 	if($a->theme['template_engine'] === 'smarty3') {
 		$template_file = get_template_file($a, 'smarty3/' . $s, $root);
@@ -602,6 +591,7 @@ function get_markup_template($s, $root = '') {
 		return $content;
 
 	}
+	 */
 }}
 
 if(! function_exists("get_template_file")) {