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https://issues.apache.org/jira/browse/TIKA-2592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16384242#comment-16384242
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Ken Krugler commented on TIKA-2592:
-----------------------------------
[~AndreasMeier] - I assume when you said:
{quote}I don't think we should treat unicode as a suspicious charset name in
general, just for html since there is a difference between java and html.
{quote}
That you were referring to the difference between what Java's CharSet class
says is a valid name, and the set of names in the [IANA
standard|https://www.iana.org/assignments/character-sets/character-sets.xhtml],
right?
If so, then I agree that what's needed is a list of valid IANA charset names,
and we should ignore any charset name in the HTML that's not in this set.
Unfortunately Java appears to have a bug, where even though "unicode" isn't a
valid IANA charset name, that CharSet returns true from the
[isRegistered()|https://docs.oracle.com/javase/7/docs/api/java/nio/charset/Charset.html#isRegistered()]
method. So to make this work, we'd need to roll our own, e.g. using the
attached list of names.
> HTML with charset unicode handled as utf-16 instead utf-8
> ---------------------------------------------------------
>
> Key: TIKA-2592
> URL: https://issues.apache.org/jira/browse/TIKA-2592
> Project: Tika
> Issue Type: Improvement
> Affects Versions: 2.0, 1.16, 1.17
> Reporter: Andreas Meier
> Priority: Minor
> Attachments: IANA Charset names.txt, TestCharsetUnicodeHTML.html,
> TestHTMLCharsetArabicCP1256.html, TestHTMLCharsetCP1256.html,
> fix-for-TIKA2592-contributed-by-Andreas-Meier.patch
>
>
> HTML files are detected as utf-16 when meta content is set to "unicode".
> {code:XML}
> <meta http-equiv="Content-Type" content="text/html; charset="unicode">
> {code}
>
> Shouldn't the default be utf-8?
> The attached sample file is shown correctly in:
> Chromium Version 55.0.2883.75
> Firefox 50.1.0
> IE 11
> I am aware that there is no charset "unicode" (available character encodings:
> [http://www.iana.org/assignments/character-sets/character-sets.xhtml|http://www.iana.org/assignments/character-sets/character-sets.xhtml])
> Unfortunately there are many wrong encodings used out there.
> All unknown encodings should be validated or at least be set to default utf-8.
> Regards
> Andreas
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