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Re: [xsl] How to get comments to indent on their own line in XML output?

2008-07-06 00:34:04

Here's an example of what I'm trying to do.  (Shoulda posted this originally, 
sorry.)

<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="2.0" >
<xsl:output indent="yes" encoding="UTF-8" method="xml" />

<xsl:template match="/" name="main" >

<root rootAttribute="example">
<xsl:comment select="'Here is my comment.'" />
<property example1="example1" />
<property example2="example2" />
</root>

</xsl:template>

</xsl:stylesheet>

I'd like this to produce:

<?xml version="1.0" encoding="UTF-8"?>
<root rootAttribute="example">
<!--Here is my comment.-->
<property example1="example1"/>
<property example2="example2"/>
</root>

but instead I get serialized indented output with the "root" and first
"property" elements appearing, with the comment between them, all on
the same line, like this.

<?xml version="1.0" encoding="UTF-8"?>
<root rootAttribute="example"><!--Here is my comment.--><property
example1="example1"/>
<property example2="example2"/>
</root>

I'm trying to get some folks to adopt XSLT for generating
human-readable configuration files for another application and the
comments tend to be important.

thanks again

-alan



----- Original Message -----
From: "Michael Kay" [mike(_at_)saxonica(_dot_)com]
Sent: 04/07/2008 23:10 CET
To: <xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com>
Subject: RE: [xsl] How to get comments to indent on their own line in XML 
output?




The serialization spec (for 2.0) says that when indenting, whitespace may be
added only immediately before an (element) start tag or immediately after an
end tag. This means it can't be inserted between a comment and a text node.
Although there's no such rule in XSLT 1.0, the logic is the same; it's
generally unsafe. For example:

<date-of-birth>1832-01<!--I think it's a 1 but it might be a
7-->-05</date-of-birth>

If you add whitespace around the comment, the document becomes invalid
against the schema.

One could do better in some cases, for example for a comment that
immediately follows an end tag (or is separated from it only by whitespace);
but in the end, you have to decide how much effort to put into fine-tuning
the algorithm.

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

-----Original Message-----
From: alan(_dot_)painter(_at_)hsbc(_dot_)fr 
[mailto:alan(_dot_)painter(_at_)hsbc(_dot_)fr] 
Sent: 04 July 2008 19:20
To: xsl-list
Subject: [xsl] How to get comments to indent on their own 
line in XML output?




Hi,

I'm producing some XML output with indented="yes" and the 
indenting works great excelpt for the comment nodes, which 
push the following elements to the end of the comment line.

I would have expected a comment to occupy its own line 
starting at current indentation level, with the following 
element on next line at same indentation.

I've tried a few naïve attempts at adding text nodes with 
newlines after comments, but no dice.

Any suggestions for this?

Thanks

-alan


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