#164 Font tag is not known anymore

[Guillaume Delhumeau]

How to reproduce:

import org.htmlcleaner.CleanerProperties;
import org.htmlcleaner.HtmlCleaner;
import org.htmlcleaner.TagNode;

public class Test
{
    public static void main(String[] args)
    {
        String htmlContent = "<font face=\"Arial\" size=\"3\" color=\"red\">This is some text!</font>";

        CleanerProperties props = new CleanerProperties();
        props.setOmitUnknownTags(true);

        HtmlCleaner cleaner = new HtmlCleaner(props);
        try {
            TagNode cleanedNode = cleaner.clean(htmlContent);
            for (TagNode tagNode : cleanedNode.getAllElements(true)) {
                System.out.println(tagNode);
            }
        } catch (Exception e) {
            throw new RuntimeException("Unhandled error when cleaning HTML", e);
        }
    }
}

Results with HTMLCleaner 2.10:

head
body
font

Results with HTMLCleaner since 2.11:

head
body

If I do

props.setOmitUnknownTags(false);

Then the "font" tag comes back. But I guess this tag should not be "unknown".

Thanks,
Guillaume Delhumeau - XWiki

[Scott Wilson]

Hi Guillaume,

The FONT tag was completely removed from the HTML5 specification, so its not in Html5TagProvider. If you switch to specifying HTML4 mode then its included, e.g.:

cleaner.getProperties().setHtmlVersion(4);

... but of course you then miss out on the added HTML5 tags.

Alternatively you can create a custom TagProvider including the parts of HTML4 you want to retain.

S

[Guillaume Delhumeau]

I see. Thanks for the explanations.

My use-case was to catch these font tags to replace them by other tags.

I am going to see how I can do that now, maybe using the TagProvider you have mentioned.

Thanks,
Guillaume

[Scott Wilson]

There is also an example specifically to replace FONT in the tag transformation documentation here:

http://htmlcleaner.sourceforge.net/parameters.php#transform

In that case it replaces it with a span and a style attribute.

[Scott Wilson]

(The relevant Java code for that transformation example is on http://htmlcleaner.sourceforge.net/javause.php)

[Guillaume Delhumeau]

I have tried to create a custom TagProvider, but infortunatly CleanerProperties#setTagInfoProvider() is private.

[Scott Wilson]

You can pass in a TagProvider implementation in the HtmlCleaner constructor e.g. new HtmlCleaner(myTagProvider, myProperties)

[Guillaume Delhumeau]

My bad. Sorry for that noise.

[Guillaume Delhumeau]

Thanks for your help. I think you can close the issue.