CDATA and JavaScript gets mangled when manipulating XHTML #139

dac514 · 2018-05-01T15:33:10Z

When loading a XHTML document with JavaScript into html5-php I expect the <script>//<![CDATA[ conversion to behave like it does in plain old \DOMDocument. Instead they get turned into htmlentities, breaking the JavaScript on our target platforms (ebook readers).

Expected:

<script>
//<![CDATA[
for ( var i = 0; i < 10; i++ ) {
	console.log(i);
}
//]]>
</script>

Actual:

<script>
//&lt;![CDATA[
for ( var i = 0; i &lt; 10; i++ ) {
	console.log(i);
}
//]]&gt;
</script>

< becomes <, > becomes >, ...

Test case:

$body = '<?xml version="1.0" encoding="UTF-8" ?>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Test</title>
</head>
<body>
<p>Hi There!</p>
<script>
//<![CDATA[
for ( var i = 0; i < 10; i++ ) {
	console.log(i);
}
//]]>
</script>
</body>
</html>';

$d1 = new \DOMDocument();
$d1->loadXml( $body );
echo $d1->saveXML();

$mm = new \Masterminds\HTML5();
$d2 = $mm->loadHTML( $body );
echo $d2->saveXML();

The text was updated successfully, but these errors were encountered:

dac514 · 2018-08-22T21:16:16Z

I would like to submit a PR but I need clarification on: \Masterminds\HTML5\Parser\EventHandler::text.

    /**
     * A unit of parsed character data.
     *
     * Entities in this text are *already decoded*.
     */
    public function text($cdata);

What does Entities in this text are *already decoded* mean? If it means that $cdata should not be manipulated then changing \Masterminds\HTML5\Parser\DOMTreeBuilder::text from:

// fprintf(STDOUT, "Appending text %s.", $data);
$node = $this->doc->createTextNode($data);
$this->current->appendChild($node);

To:

// fprintf(STDOUT, "Appending text %s.", $data);
$frag = $this->doc->createDocumentFragment();
$frag->appendXML($data);
$this->current->appendChild($frag);

Solves this issue.

DOMDocument->createTextNode() encodes entities. Is this the desired behaviour or not?

Source: https://stackoverflow.com/a/7725965

goetas · 2018-08-23T07:01:43Z

The thing is that "script" is a raw text tag, so Tokenizer::rawText() looks directly for </script> instead of looking for a possible cdata sequence.

When serializing back the dom, are you using this lib or the domdocument::save xml method?

dac514 · 2018-08-23T13:39:49Z

I am using this lib:

$mm = new \Masterminds\HTML5();
$d2 = $mm->loadHTML( $body );
echo $d2->saveXML();

Entities in this text are *already decoded, rawText, .... these methods and comments lead me to believe that if you pass Hé then the result should be Hé, not Hé

My question, worded another way, is what is rawText? The code for rawText calls text and text creates the node using createTextNode which will transform entities.

If this is the case then my proposed fix is no good.

dac514 · 2018-08-23T13:49:46Z

I am using this lib:

Ok, duh. No I am not. My mistake. When changing to:

$mm = new \Masterminds\HTML5();
$d2 = $mm->loadHTML( $body );
$mm->saveHTML( $d2 );

I get:

<!DOCTYPE html>
<html xml:lang="en"><head>
<title>Test</title>
</head>
<body>
<p>1</p>
<script>
//<![CDATA[
for ( var i = 0; i < 10; i++ ) {8
	console.log(i);
}
//]]>
</script>
<p>2</p>
</body>
</html>

Maybe this is #nobug? Thank you for your patience.

goetas · 2018-08-23T14:06:30Z

Doing

$html = '
<!DOCTYPE html>
<html>
    <head>
        <script>ababc</script>
        <script>ab < abc</script>
        <script>
        // <![CDATA[
            foo <
        // ]]>
        bar
        </script>
    </head>
</html>';

$html5 = new HTML5();
$doc = $html5->loadHTML($html);
var_dump($html5->saveHTML($doc));

I get:

<!DOCTYPE html>
<html>
    <head>
        <script>ababc</script>
        <script>ab < abc</script>
        <script>
        // <![CDATA[
            foo <
        // ]]>
        bar
        </script>
    </head>
</html>

dac514 · 2018-08-23T14:46:16Z

Back from vacation so excuse the all over the place tangent.

Elsewhere in our code, we have often used $mm->saveHTML( $d2 ) where $mm equals \Masterminds\HTML5

For this specific bug we need to save back as valid XML. We expect similar results to \Masterminds\HTML5\Tests\Parser\DOMTreeBuilderTest::testMoveNonInlineElements

I just tried the proposed fix and, for this specific bug, and it doesn' work for us because <br/> get turned into <br> which breaks our XSLT.

The issue remains. We need

<script>
//<![CDATA[
for ( var i = 0; i < 10; i++ ) {
	console.log(i);
}
//]]>
</script>

Preserved in XML saves like \DOMDocument does it.

goetas · 2018-08-23T14:53:04Z

$html5->saveHTML is there exactly because the DOM version did not work as expected in many other cases...
Re opening as "feature request"

goetas added the bug label May 1, 2018

goetas removed the bug label Aug 23, 2018

goetas closed this as completed Aug 23, 2018

goetas added the feature request label Aug 23, 2018

goetas reopened this Aug 23, 2018

goetas added the help-wanted label Nov 23, 2018

stof mentioned this issue Mar 28, 2019

[DomCrawler] Optionally use html5-php to parse HTML symfony/symfony#29306

Merged

SteelWagstaff mentioned this issue Nov 27, 2019

Mobi hacks XSLT breaks JavaScript in Epub3 pressbooks/pressbooks#1859

Closed

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CDATA and JavaScript gets mangled when manipulating XHTML #139

CDATA and JavaScript gets mangled when manipulating XHTML #139

dac514 commented May 1, 2018

dac514 commented Aug 22, 2018

goetas commented Aug 23, 2018

dac514 commented Aug 23, 2018

dac514 commented Aug 23, 2018 •

edited

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goetas commented Aug 23, 2018

dac514 commented Aug 23, 2018

goetas commented Aug 23, 2018

CDATA and JavaScript gets mangled when manipulating XHTML #139

CDATA and JavaScript gets mangled when manipulating XHTML #139

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dac514 commented May 1, 2018

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