[3.1.1] Allow injectors to be specified by modules.

- Make method for URI implemented
- Split out checkNeeded in Injector from prepare

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1779 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/Strategy/MakeWellFormed.php

@@ -38,6 +38,7 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
         $this->injectors = array();
         
         $injectors = $config->getBatch('AutoFormat');
+        $def_injectors = $definition->info_injector;
         $custom_injectors = $injectors['Custom'];
         unset($injectors['Custom']); // special case
         foreach ($injectors as $injector => $b) {
@@ -45,6 +46,10 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
             if (!$b) continue;
             $this->injectors[] = new $injector;
         }
+        foreach ($def_injectors as $injector) {
+            // assumed to be objects
+            $this->injectors[] = $injector;
+        }
         foreach ($custom_injectors as $injector) {
             if (is_string($injector)) {
                 $injector = "HTMLPurifier_Injector_$injector";