+ Adds Plugin Proxy functionality

CHANGELOG

@@ -12,6 +12,10 @@
   with the creation of compilable xml/html-related plugins
 + Syntax: Static methods can be called using {Class::method()}
 + Compiler supports method calls into a method call's parameters
++ API: Added Dwoo->setPluginProxy() and Dwoo_IPluginProxy that allow you to
+  hook into the compiler's plugin subsystem to provide your own plugin calls.
+  Thanks to Denis Arh for the patch
+   => http://forum.dwoo.org/viewtopic.php?id=70
 * Syntax: Math expressions in strings are now only allowed when the entire
   expression is delimited, e.g. {"/$foo/$bar"} evaluates as just that while
   {"/`$foo/$bar`"} will result in "/".($foo/$bar), therefore processing the /

lib/Dwoo.php

@@ -3,6 +3,7 @@
 define('DWOO_DIRECTORY', dirname(__FILE__).DIRECTORY_SEPARATOR);
 set_include_path(get_include_path() . PATH_SEPARATOR . DWOO_DIRECTORY);
 
+include 'Dwoo/IPluginProxy.php';
 include 'Dwoo/ILoader.php';
 include 'Dwoo/Loader.php';
 include 'Dwoo/Exception.php';
@@ -97,6 +98,7 @@ class Dwoo
 	const SMARTY_MODIFIER = 64;
 	const SMARTY_BLOCK = 128;
 	const SMARTY_FUNCTION = 256;
+	const PROXY_PLUGIN = 512;
 	/**#@-*/
 
 	/**
@@ -268,6 +270,13 @@ class Dwoo
 	protected $buffer;
 
 	/**
+	 * stores plugin proxy
+	 *
+	 * @var Dwoo_IPluginProxy
+	 */
+	protected $pluginProxy;
+
+ 	/**
 	 * constructor, sets the cache and compile dir to the default values if not provided
 	 *
 	 * @param string $compileDir path to the compiled directory, defaults to lib/compiled
@@ -804,6 +813,25 @@ class Dwoo
 		return $this->securityPolicy;
 	}
 
+	/**
+	 * sets the object that must be used as a plugin proxy when plugin can't be found
+	 * by dwoo's loader
+	 *
+	 * @param Dwoo_IPluginProxy $pluginProxy the proxy object
+	 */
+	public function setPluginProxy(Dwoo_IPluginProxy $pluginProxy) {
+		$this->pluginProxy = $pluginProxy;
+	}
+
+	/**
+	 * returns the current plugin proxy object or null by default
+	 *
+	 * @param Dwoo_IPluginProxy|null the proxy object if any
+	 */
+	public function getPluginProxy() {
+		return $this->pluginProxy;
+	}
+
 	/*
 	 * --------- util functions ---------
 	 */

lib/Dwoo/Compiler.php

@@ -201,6 +201,13 @@ class Dwoo_Compiler implements Dwoo_ICompiler
 	protected $curBlock;
 
 	/**
+	 * current dwoo object that uses this compiler, or null
+	 *
+	 * @var Dwoo
+	 */
+	protected $dwoo;
+
+	/**
 	 * holds an instance of this class, used by getInstance when you don't
 	 * provide a custom compiler in order to save resources
 	 *
@@ -713,7 +720,10 @@ class Dwoo_Compiler implements Dwoo_ICompiler
 
 		// build plugin preloader
 		foreach ($this->usedPlugins as $plugin=>$type) {
-			if ($type & Dwoo::CUSTOM_PLUGIN) continue;
+			if (($type & Dwoo::CUSTOM_PLUGIN) || ($type & Dwoo::PROXY_PLUGIN)) {
+				continue;
+			}
+
 			switch($type) {
 
 			case Dwoo::BLOCK_PLUGIN:
@@ -1356,7 +1366,7 @@ class Dwoo_Compiler implements Dwoo_ICompiler
 		}
 
 		// funcs
-		if ($pluginType & Dwoo::NATIVE_PLUGIN || $pluginType & Dwoo::SMARTY_FUNCTION || $pluginType & Dwoo::SMARTY_BLOCK) {
+		if ($pluginType & Dwoo::NATIVE_PLUGIN || $pluginType & Dwoo::PROXY_PLUGIN || $pluginType & Dwoo::SMARTY_FUNCTION || $pluginType & Dwoo::SMARTY_BLOCK) {
 			$params = $this->mapParams($params, null, $state);
 		} elseif ($pluginType & Dwoo::CLASS_PLUGIN) {
 			if ($pluginType & Dwoo::CUSTOM_PLUGIN) {
@@ -1439,6 +1449,12 @@ class Dwoo_Compiler implements Dwoo_ICompiler
 					$output = '$this->classCall(\''.$func.'\', array('.$params.'))';
 				}
 			}
+		} elseif ($pluginType & Dwoo::PROXY_PLUGIN) {
+			if (isset($params['*'])) {
+				$output = call_user_func_array(array($this->dwoo->getPluginProxy(), $func), $params['*']);
+			} else {
+				$output = call_user_func(array($this->dwoo->getPluginProxy(), $func));
+			}
 		} elseif ($pluginType & Dwoo::SMARTY_FUNCTION) {
 			$params = $this->implode_r($params['*'], true);
 
@@ -2308,6 +2324,10 @@ class Dwoo_Compiler implements Dwoo_ICompiler
 				} else {
 					$output = $func.'('.$params.')';
 				}
+			} elseif ($pluginType & Dwoo::PROXY_PLUGIN) {
+				$params = $this->mapParams($params, null, $state);
+				$params = $params['*'][0];
+				$output = call_user_func_array(array($this->dwoo->getPluginProxy(), $func), $params);
 			} elseif ($pluginType & Dwoo::SMARTY_MODIFIER) {
 				$params = $this->mapParams($params, null, $state);
 				$params = $params['*'][0];
@@ -2476,6 +2496,9 @@ class Dwoo_Compiler implements Dwoo_ICompiler
 					} catch (Exception $e) {
 						if (isset($phpFunc)) {
 							$pluginType = Dwoo::NATIVE_PLUGIN;
+						} elseif ($this->dwoo->getPluginProxy() && $this->dwoo->getPluginProxy()->loadPlugin($name)) {
+							$pluginType = Dwoo::PROXY_PLUGIN;
+							break;
 						} else {
 							throw $e;
 						}
@@ -2487,7 +2510,7 @@ class Dwoo_Compiler implements Dwoo_ICompiler
 			}
 		}
 
-		if (($pluginType & Dwoo::COMPILABLE_PLUGIN) === 0 && ($pluginType & Dwoo::NATIVE_PLUGIN) === 0) {
+		if (($pluginType & Dwoo::COMPILABLE_PLUGIN) === 0 && ($pluginType & Dwoo::NATIVE_PLUGIN) === 0 && ($pluginType & Dwoo::PROXY_PLUGIN) === 0) {
 			$this->usedPlugins[$name] = $pluginType;
 		}
 

lib/Dwoo/IPluginProxy.php

+<?php
+
+/**
+ * interface that represents a dwoo plugin proxy
+ *
+ * This software is provided 'as-is', without any express or implied warranty.
+ * In no event will the authors be held liable for any damages arising from the use of this software.
+ *
+ * This file is released under the LGPL
+ * "GNU Lesser General Public License"
+ * More information can be found here:
+ * {@link http://www.gnu.org/copyleft/lesser.html}
+ *
+ * @author     Denis Arh <denis@arh.cc>
+ * @copyright  Copyright (c) 2008, Denis Arh (this file + some patched bits here and there)
+ * @license    http://www.gnu.org/copyleft/lesser.html  GNU Lesser General Public License
+ * @link       http://dwoo.org/
+ * @version    0.9.1
+ * @date       2008-05-30
+ * @package    Dwoo
+ */
+interface Dwoo_IPluginProxy
+{
+	/**
+	 * loads a plugin or returns false on failure
+	 *
+	 * @param string $name the plugin name
+	 * @return bool true if the plugin was successfully loaded
+	 */
+    public function loadPlugin($name);
+}
\ No newline at end of file

tests/CompilerTests.php

@@ -535,6 +535,40 @@ replace="BAR"
 
 		$this->assertEquals('-BAZBAR-', $this->dwoo->get($tpl, array(), $this->compiler));
 	}
+
+	public function testPluginProxy()
+	{
+		$proxy = new ProxyHelper('baz',true,3);
+		$dwoo = new Dwoo();
+		$dwoo->setPluginProxy($proxy);
+		$tpl = new Dwoo_Template_String('{TestProxy("baz", true, 3)}');
+		$tpl->forceCompilation();
+
+		$this->assertEquals('valid', $dwoo->get($tpl, array(), $this->compiler));
+	}
+}
+
+class ProxyHelper implements Dwoo_IPluginProxy
+{
+	public function __construct()
+	{
+		$this->params = func_get_args();
+	}
+
+	public function loadPlugin($name)
+	{
+		return $name === 'TestProxy';
+	}
+
+	public function checkTestProxy()
+	{
+		return func_get_args() === $this->params ? 'valid' : 'fubar';
+	}
+
+	public function __call($m, $p)
+	{
+		return '$this->getPluginProxy()->check'.$m.'('.implode(',', $p).')';
+	}
 }
 
 class MethodCallsHelper {

tests/CoreTests.php

@@ -291,4 +291,12 @@ class CoreTests extends PHPUnit_Framework_TestCase
 		$this->assertEquals(hash('md4','foo'), $tpl->getUid());
 
 	}
+
+	public function testPluginProxyGetSet()
+	{
+		$proxy = new ProxyHelper;
+		$dwoo = new Dwoo();
+		$dwoo->setPluginProxy($proxy);
+		$this->assertEquals($proxy, $dwoo->getPluginProxy());
+	}
 }