Parsing (IE) conditional comments

David Lents

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Aug 23, 2013, 6:24:46 PM8/23/13

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Hello,

I'm trying to parse an html document to extract the items inside the <head> section so that I can reconstitute them in a new document, but I haven't been able to figure out how to parse the conditional IE tags. Is there a recommended way to do that? Here's an excerpt of the html:

<!DOCTYPE html>

<head>

<title>A Title</title>

...

<!--[if lt IE 9]>

<![endif]-->

...

</head>

I need to reproduce the conditional IE comments. I tried using QPXML's comment() method, but it doesn't seem to work. I've searched and wasn't able to find much info on parsing comments, and none specific to conditional comments like above. Any help would be appreciated.

TechnoSophos

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Aug 28, 2013, 6:10:51 PM8/28/13

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I tried responding to this message earlier this week... did my response make it through?

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David Lents

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Aug 28, 2013, 10:34:40 PM8/28/13

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No, I have not seen a response.

TechnoSophos

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Aug 29, 2013, 12:18:32 PM8/29/13

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Ah, okay. My fault.

So... the short answer is that QueryPath doesn't do anything to parse IE comments. It ignores them like Chrome, Safari, and Firefox.

Unfortunately, the current "best way" is a little tedious:

$kids = qp($html, 'head')->children()->get();

$comments = array();

foreach ($kids as $someNode) {

if ($someNode->nodeType == XML_COMMENT_NODE) {

$comments[] = $someNode;
}

}

That gives you an array of these guys: http://www.php.net/manual/en/class.domcomment.php

Based on what you're asking for, I'm wondering how much sense it makes to add this (as a better comment() function) to QueryPath's core. Your use case makes perfect sense to me.

Matt

David Lents

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Sep 1, 2013, 6:45:26 PM9/1/13

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Matt,

Thanks for the tip, I'll give that a try!

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