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Date: Thu, 20 Nov 2003 09:37:05 +0100
From: Karel Zak <zakkr@zf.jcu.cz>
To: Peter Eisentraut <peter_e@gmx.net>
Cc: pgsql-docs@postgresql.org
Subject: Re: [HACKERS] XML Docbook
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	<Pine.LNX.4.44.0311142008210.5327-100000@peter.localdomain>
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On Fri, Nov 14, 2003 at 08:16:30PM +0100, Peter Eisentraut wrote:
> Karel Zak writes:
> 
> > On Fri, Nov 14, 2003 at 10:32:10AM +0100, Peter Eisentraut wrote:
> > > XML disadvantage:
> > >
> > > - no arbitrary parameter entities
> >
> >  I unsure if I understand, can you show some example of this problem?
> 
> SGML and XML allow you to disable certain parts of your document, by
> writing
> 
> <![IGNORE[
> <stuff>...</stuff>
> ]]>
> 
> The opposite of IGNORE is INCLUDE.  Think of this as a preprocessing
> stage.  You can also make the IGNORE/INCLUDE variable, by declaring a
> "parameter entity", think of it as a variable.  This is declared like
> this:
> 
> <!entity % myvar "IGNORE">
> 
> Then you can write
> 
> <![%myvar;[
> <stuff>...</stuff>
> ]]>

 One  Czech XML  guru  suggest  me use  for  this "profiling". For  more
 information see:
 
    http://www.sagehill.net/docbookxsl/Profiling.html

 An example:

 <para os="windows">WinText</para>
 
 and when  you apply XSL template  you can use template  with "profile-"
 prefix  (profile-docbook.xsl,  profile-chunk.xsl)   and  define  option
 profile.os="windows".

 The other thing are INCLUDEs, I think best way is use W3C's <xinclude>.
 The  "xsltproc" support  it (--xinclude  option) and  for others  tools
 which doesn't support  it you can use common tool  "xmllint" that merge
 all to one temporary file:

 xmllint --xinclude --postvalid book.xml tmp.xml
 fop -xsl /path/file.xsl -xml tmp.xml -pdf book.pdf
 rm -f tmp.xml
 
 Comments?
 
    Karel

-- 
 Karel Zak  <zakkr@zf.jcu.cz>
 http://home.zf.jcu.cz/~zakkr/