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RE: xsl and toc.hhc (was xml -> htmlhelp and character 8220)

2004-11-12 16:31:38
Recent versions of Saxon have some equally horrible hacks. Specifically
(again only for the less common encodings), it now uses the JDK 1.4
canEncode() method, but does some random sampling to check the answer,
because it is known that some encodings say they can encode characters that
they can't. Yuk.

Michael Kay
http://www.saxonica.com/

-----Original Message-----
From: Elliotte Harold [mailto:elharo(_at_)metalab(_dot_)unc(_dot_)edu] 
Sent: 12 November 2004 23:18
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] xsl and toc.hhc (was xml -> htmlhelp and 
character 8220)

Michael Kay wrote:

As the passage above explains, the encoding most (a) be one 
that the JRE
supports, and (b) be one that Saxon knows about. This is because the
translation of unencodable characters into character 
references is done by
Saxon, not by the JRE, and until recently there was no way 
of asking Java
which encodings were available and which characters they supported.

Well, there's no good way but it can be done. XOM hacks this for the 
less common character sets by trying to output the given 
character into 
a ByteArrayOutputStream and seeing whether it gets that 
character or a 
replacement character. It's an ugly hack, but I was 
pleasantly surprised 
at how well it performed. (For the more common character sets 
XOM uses 
algorithms or lookup-tables.)

-- 
Elliotte Rusty Harold  elharo(_at_)metalab(_dot_)unc(_dot_)edu
XML in a Nutshell 3rd Edition Just Published!
http://www.cafeconleche.org/books/xian3/
http://www.amazon.com/exec/obidos/ISBN=0596007647/cafeaulaitA/
ref=nosim

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