Improve parsing broken markup

Author: clue

src/Io/Loader.php

@@ -29,10 +29,12 @@ public function loadXmlString($html)
         // fix invalid markup of outdated ViewVC versions
         // - help link in footer not terminated
         // - selected branch/tag in CVS "sticky tag" dropdown has not attribute value
-        // - clear button for selected branch/tag has no trailing slash
+        // - self closing elements with no trailing slash
+        // - excessive form close tags
         $html = str_replace('Help</strong></td>', 'Help</a></strong></td>', $html);
         $html = str_replace('selected>', 'selected="selected">', $html);
-        $html = preg_replace('#<input([^\/]+)>#', '<input$1 />', $html);
+        $html = preg_replace('#<((?:input|br|hr|img)[^\/\>]*)>#', '<$1 />', $html);
+        $html = preg_replace('#(</table>\s*)</form>\s*(</div>)#', '$1$2', $html);
 
         // replace named HTML entities with their UTF-8 value
         $html = str_replace(array_values($this->entities), array_keys($this->entities), $html);

tests/Io/LoaderTest.php

@@ -47,6 +47,12 @@ public function testLoadInvalidMarkupInputNotClosed()
         $this->assertEquals('hidden', (string)$xml['type']);
     }
 
+    public function testPrepareInvalidMarkupBrNotClosed()
+    {
+        $html = '<br>';
+        $xml = $this->loader->loadXmlString($html);
+    }
+
     public function testLoadInvalidMarkupSelectedAttributeNoValue()
     {
         $str = '<option selected>this</option>';