Try to integrate the amp-hulu tag

README.md

@@ -161,18 +161,18 @@ FAIL
 
 <a style="color: red;" href="javascript:run();"> on line 1
 - The attribute 'style' may not appear in tag 'a'.
-   [code: DISALLOWED_ATTR  category: DISALLOWED_HTML]
+   [code: DISALLOWED_ATTR  category: DISALLOWED_HTML see: https://www.ampproject.org/docs/reference/spec.html#links]
    ACTION TAKEN: a.style attribute was removed due to validation issues.
 - Invalid URL protocol 'javascript:' for attribute 'href' in tag 'a'.
-   [code: INVALID_URL_PROTOCOL  category: DISALLOWED_HTML]
+   [code: INVALID_URL_PROTOCOL  category: DISALLOWED_HTML see: https://www.ampproject.org/docs/reference/spec.html#links]
    ACTION TAKEN: a.href attribute was removed due to validation issues.
 
 <a style="margin: 2px;" href="http://www.cnn.com" target="_parent"> on line 2
 - The attribute 'style' may not appear in tag 'a'.
-   [code: DISALLOWED_ATTR  category: DISALLOWED_HTML]
+   [code: DISALLOWED_ATTR  category: DISALLOWED_HTML see: https://www.ampproject.org/docs/reference/spec.html#links]
    ACTION TAKEN: a.style attribute was removed due to validation issues.
 - The attribute 'target' in tag 'a' is set to the invalid value '_parent'.
-   [code: INVALID_ATTR_VALUE  category: DISALLOWED_HTML]
+   [code: INVALID_ATTR_VALUE  category: DISALLOWED_HTML see: https://www.ampproject.org/docs/reference/spec.html#html-tags]
    ACTION TAKEN: a.target attribute was removed due to validation issues.
 
 <input type="submit" value="submit"> on line 5
@@ -182,7 +182,7 @@ FAIL
 
 <div onmouseover="hello();"> on line 6
 - The attribute 'onmouseover' may not appear in tag 'div'.
-   [code: DISALLOWED_ATTR  category: DISALLOWED_HTML]
+   [code: DISALLOWED_ATTR  category: DISALLOWED_HTML see: https://www.ampproject.org/docs/reference/spec.html#links]
    ACTION TAKEN: div.onmouseover attribute was removed due to validation issues.
 
 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"> on line 8

src/AMP.php

@@ -58,6 +58,7 @@ class AMP
         'Lullabot\AMP\Pass\IframeVineTagTransformPass',
         'Lullabot\AMP\Pass\IframeDailymotionTagTransformPass',
         'Lullabot\AMP\Pass\IframeYouTubeTagTransformPass',
+        'Lullabot\AMP\Pass\IframeHuluTagTransformPass',
         'Lullabot\AMP\Pass\IframeTagTransformPass',
         'Lullabot\AMP\Pass\InstagramTransformPass',
         'Lullabot\AMP\Pass\PinterestTagTransformPass',

src/Pass/IframeHuluTagTransformPass.php

@@ -0,0 +1,65 @@
+<?php
+/*
+ * Copyright 2016 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+namespace Lullabot\AMP\Pass;
+
+use QueryPath\DOMQuery;
+
+use Lullabot\AMP\Utility\ActionTakenLine;
+use Lullabot\AMP\Utility\ActionTakenType;
+
+/**
+ * Class IframeHuluTagTransformPass
+ * @package Lullabot\AMP\Pass
+ *
+ * Sample hulu embed code:
+ * <iframe width="854" height="480" frameborder="0" allowfullscreen="allowfullscreen" src="//www.hulu.com/embed.html?eid=_hHzwnAcj3RrXMJFDDvkuw"></iframe>
+ *
+ * @see https://www.ampproject.org/docs/reference/extended/amp-hulu.html
+ * @see https://ampbyexample.com/components/amp-hulu/
+ */
+class IframeHuluTagTransformPass extends BasePass
+{
+    function pass()
+    {
+        $all_iframes = $this->q->find('iframe:not(noscript iframe)');
+        /** @var DOMQuery $el */
+        foreach ($all_iframes as $el) {
+            /** @var \DOMElement $dom_el */
+            $dom_el = $el->get(0);
+            $lineno = $this->getLineNo($dom_el);
+
+            if ($eid = $this->getArtifactId($el, '&(*UTF8)hulu\.com/embed\.html\?eid=(\w+)&i')) {
+                $width = $el->attr('width') ?: 800;
+                $height = $el->attr('height') ?: 600;
+
+                $context_string = $this->getContextString($dom_el);
+
+                // width and height are intended to be aspect ratios here
+                $el->after('<amp-hulu width="' . $width . '" height="' . $height . '" layout="responsive" data-eid="' . $eid . '"></amp-hulu>');
+                $new_dom_el = $el->next()->get(0);
+
+                $el->removeChildren()->remove();
+                $this->addActionTaken(new ActionTakenLine('iframe', ActionTakenType::HULU_CONVERTED, $lineno, $context_string));
+                $this->context->addLineAssociation($new_dom_el, $lineno);
+            }
+        }
+
+        return $this->transformations;
+    }
+}