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From: Andrew Stevens <ats37@hotmail.com>
To: <users@cocoon.apache.org>
Subject: RE: Parsing HTML entities
Date: Fri, 31 Aug 2007 16:58:18 +0100
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Oh, for crying out loud.  Even after switching to plain text Hotmail still=
=20
strips out my included XML :-(
Let's try again - replace the square brackets below with the appropriate=20
less-than and greater-than symbols.

> From: joerg.heinicke@gmx.de
> Date: Fri, 31 Aug 2007 14:06:59 +0000
>
> Tobia Conforto < tobia.conforto < at> linux.it> writes:
>
>> I have a data source from which I get SAX text nodes into my pipeline
>> that contain escaped HTML entities and=20
 tags. In Java syntax:
>>
>> "Lorem ipsum =97 dolor sit amet. < br> Consectetuer"
>>
>> or, in XML syntax:
>>
>> Lorem ipsum &mdash; dolor sit amet. <br> Consectetuer
>>
>> As you can see, the entities and < br> tags are escaped and part of the
>> text node.
>>
>> I cannot change this data source component, therefore I need a
>> transformer to examine every text node in the stream, split it at the
>> fake "< br>" tags, substitute them with < xhtml:br/> elements, and
>> replace every escaped entity with the relevant Unicode character.
>
> That's one of the rare cases where I consider < xsl:text
> disable-output-escaping=3D"yes"> a valid approach [1]. I don't know if th=
ere is
> something comparable directly on the Java side.

Unless I'm mistaken, doing that on his example would result in an invalid
document as there's no matching [/br] element...?  It would be okay if it
can be guaranteed that the included text is nice well-formed XHTML, but if
it's plain old HTML then it sounds to me more like a job for the jtidy or
neko-based HTML transformers.

We have something similar in our application; I arrange the early part of t=
he=20
pipeline so that the escaped HTML appears within a unique element e.g.

[some_escaped_html]Lorem ipsum & lt;br& gt; dolor[/some_escaped_html]

, pass it through the html transformer

[map:transform type=3D"html"]
[map:parameter name=3D"tags" value=3D"some_escaped_html"/]
[/map:transform]

and follow that by a small xsl transformation to strip out the some_escaped=
_html
elements (and the html & body elements that JTidy inserts)

[xsl:template match=3D"vf_escaped_html"]
[xsl:apply-templates select=3D"html/body/*"/]
[/xsl:template]
+ the usual "passthrough" templates for all other nodes.

Net result, the same SAX stream but with the HTML unescaped and cleaned
up so it's well-formed again.


Andrew.

_________________________________________________________________
Get free emoticon packs and customisation from Windows Live.=20
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