Implement EntityLookup and put in the Lexer. Some behavior was migrated, since it looks like it will have to be used in all Lexers, not just DirectLex (which is the only one that uses it).

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@105 48356398-32a2-884e-a903-53898d9a118a

tests/HTMLPurifier/EntityLookupTest.php

@@ -0,0 +1,29 @@
+<?php
+
+// this page is UTF-8 encoded!
+
+require_once 'HTMLPurifier/EntityLookup.php';
+
+class HTMLPurifier_EntityLookupTest extends UnitTestCase
+{
+    
+    function test() {
+        
+        $lookup = HTMLPurifier_EntityLookup::instance();
+        
+        // latin char
+        $this->assertIdentical('â', $lookup->table['acirc']);
+        
+        // special char
+        $this->assertIdentical('"', $lookup->table['quot']);
+        $this->assertIdentical('“', $lookup->table['ldquo']);
+        $this->assertIdentical('<', $lookup->table['lt']); //expressed strangely
+        
+        // symbol char
+        $this->assertIdentical('θ', $lookup->table['theta']);
+        
+    }
+    
+}
+
+?>