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CDATA and result-document compatibility
Added by Anonymous about 18 years ago
Legacy ID: #4015728
Legacy Poster: pbodu (pbodu)
Hi there, I'm getting familiar with XSLT and the Saxon-B implementation of xslt 2.0
to generate C code files from xml files. I'm trying to get clean xslt AND C code. I use
<xsl:strip-space elements=""/> so that spaces and
linefeeds are not repercuted from xml to output file. Nevertheless, I have some problems
when I use CDATA expression. Imagine my xml file is : <ROOT_TAG>
<DESTINATION_FILENAME>helloWorld.c</DESTINATION_FILENAME>
<MY_NAME>pbodu</MY_NAME> </ROOT_TAG> and my
xsl transform is : <?xml version="1.0"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="2.0"> <xsl:output
method="text" indent="no"/>
<xsl:strip-space elements=""/> <xsl:variable
name='nl'> <xsl:text>
</xsl:text>
</xsl:variable> <xsl:template match="/">
<xsl:result-document
href="{/ROOT_TAG/DESTINATION_FILENAME}">
<xsl:text>/* This C source file was automatically generated
/</xsl:text> <xsl:value-of select="$nl"/>
<xsl:text>#include
<stdio.h></xsl:text> <xsl:value-of
select="$nl"/> <xsl:value-of
select="$nl"/>
<xsl:text>main{</xsl:text> <xsl:value-of
select="$nl"/> <xsl:text> printf("Hello
world, my name is %s\n","</xsl:text>
<xsl:value-of select="/ROOT_TAG/MY_NAME"/>
<xsl:text>");</xsl:text> <xsl:value-of
select="$nl"/>
<xsl:text>}</xsl:text> </xsl:result-document>
</xsl:template> </xsl:stylesheet> then i'll get this clean
helloWorld.c file : / This C source file was automatically generated / #include
<stdio.h> main{ printf("Hello world, my name is
%s\n","pbodu"); } although if I use this xsl stylesheet :
<?xml version="1.0"?> <xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="2.0"> <xsl:output
method="text" indent="no"/>
<xsl:strip-space elements=""/> <xsl:variable
name='nl'> <xsl:text>
</xsl:text>
</xsl:variable> <xsl:template match="/">
<xsl:result-document
href="{/ROOT_TAG/DESTINATION_FILENAME}">
<xsl:text>/* This C source file was automatically generated
/</xsl:text> <xsl:value-of select="$nl"/>
<![CDATA[#include <stdio.h>]]> <xsl:value-of
select="$nl"/> <xsl:value-of
select="$nl"/>
<xsl:text>main{</xsl:text> <xsl:value-of
select="$nl"/> <xsl:text> printf("Hello
world, my name is %s\n","</xsl:text>
<xsl:value-of select="/ROOT_TAG/MY_NAME"/>
<xsl:text>");</xsl:text> <xsl:value-of
select="$nl"/>
<xsl:text>}</xsl:text> </xsl:result-document>
</xsl:template> </xsl:stylesheet> I'll get this kind of C
code / This C source file was automatically generated */ #include
<stdio.h> main{ printf("Hello world, my name is
%s\n","pbodu"); } where spaces and linefeed obviously come
from the xml code (the more linefeeds between tagged code, the more linefeeds in the
output. Is there something wrong with the second stylesheet ? Best regards, PBodu
Legacy ID: #4015749
Legacy Poster: Michael Kay (mhkay)
Writing <![CDATA[#include <stdio.h>]]> in the stylesheet
is exactly equivalent to writing #include <stdio.h> It's not
equivalent to writing <xsl:text>#include
<stdio.h></xsl:text> If you want to stop the
adjacent whitespace bleeding in, you still need the xsl:text delimiters.
xsl:strip-space, incidentally, only affects whitespace in the source document, not the
stylesheet. Whitespace text nodes in the stylesheet are stripped automatically. But
whitespace characters adjacent to non-whitespace are always significant, and using CDATA
doesn't change this.
Legacy ID: #4015797
Legacy Poster: pbodu (pbodu)
mmmmm that helps, thanks ! So my CDATA use pops a raw text element in the xsl tree,
and whitespaces and linefeeds around it stick to it. Better use of CDATA, in this case
would be : <xsl:text><![CDATA[#include
<stdio.h>]]</xsl:text> (I've just tried, it works fine)
Thanks again, PBodu
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