Problem with xsl:apply-templates, target file empty

Question

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I'm trying to transform a SVG-file into another XML-file using XSLT and the C# class XslCompiledTransform

This is my SVG

XML

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 
<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ev="http://www.w3.org/2001/xml-events"
     version="1.1" baseProfile="full"
     width="800mm" height="600mm">

<rect x="10" y="10" width="90" height="40" />
 
</svg>

This is my C#-Code

C#

static void Main(string[] args)
        {
            string xmlSource = args[0];
            string xmlOutput = args[1];
            string xsltFile = args[2];

            // if xslt or soure contains a DTD:
            XmlReaderSettings xmlReadSet = new XmlReaderSettings();
            xmlReadSet.DtdProcessing = DtdProcessing.Parse;
            xmlReadSet.ValidationType = ValidationType.Schema;
            XslCompiledTransform xslt = new XslCompiledTransform();

            // 
            XmlWriterSettings xmlWriteSet = new XmlWriterSettings();
            xmlWriteSet.ConformanceLevel = ConformanceLevel.Auto;

            //
            xslt.Load(xsltFile);
            xslt.Transform(XmlReader.Create(xmlSource, xmlReadSet), XmlWriter.Create(xmlOutput, xmlWriteSet));

        }

And this is my XSLT-File:

XML

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"
>
    <xsl:output method="xml" version="1.0" indent="yes" encoding="utf-8" omit-xml-declaration="no"/>

    <xsl:template match="/">
      <xsl:element name="Redlining">
        <xsl:attribute name="hash">???</xsl:attribute>
        <xsl:attribute name="version">4.1</xsl:attribute>

        <xsl:element name="BoundingBox">
          <xsl:attribute name="xMin">???</xsl:attribute>
          <xsl:attribute name="yMin">???</xsl:attribute>
          <xsl:attribute name="xMax">???</xsl:attribute>
          <xsl:attribute name="yMax">???</xsl:attribute>
        </xsl:element>

        <xsl:element name="GeometryHolder" />
        <xsl:apply-templates select="rect"/>
      </xsl:element>
    </xsl:template>

  <xsl:template match="rect">
    <xsl:element name="RectangleHolder">
      <xsl:element name="Sector">
        <xsl:attribute name="type">sector</xsl:attribute>
        <xsl:element name="Coordinate">
          <xsl:attribute name="x">
            <xsl:value-of select="@x + @width"/>
          </xsl:attribute>          
        </xsl:element>
      </xsl:element>
    </xsl:element>
  </xsl:template>
</xsl:stylesheet>

And this is what I get:

XML

<Redlining hash="???" version="4.1"><BoundingBox xMin="???" yMin="???" xMax="???" yMax="???" /><GeometryHolder /></Redlining>

I don't understand why the xml declaration is omitted, why the xml is not indented and, the most important part, what I'm doing wrong with the definition and calling of the template for the rect elements.

Can anyone help me please?

Posted 20-Aug-12 0:03am

Alpman

Updated 20-Aug-12 4:43am

v2

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Andreas Gieriet · Accepted Answer · 2012-08-20T12:23:00

Solution 1

Try:

XML

...
<xsl:apply-templates select=".//rect"/>
...

[EDIT]
If this does not help, you may try the following:

XML

   ...
   <xsl:apply-templates select=".//*[local-name()='rect']"/>
   ...

...
<xsl:template match="*[local-name()='rect']">
...

Maybe, there is a more elegant way, though, to ignore the element name spaces.

I had some issues while running this in VS2010. If I remove the DOCTYPE part and if I take away the namespaces, the first version works fine and instantly. With the original svg file content, VS2010 takes 10-15 seconds to run that (and only the second variant works).
[/EDIT]

Cheers
Andi

Posted 20-Aug-12 12:23pm

Andreas Gieriet

Updated 20-Aug-12 12:37pm

v2

Comments

Alpman 21-Aug-12 4:25am

Thanks, Andi. I observed the time issue with the DOCTYPE, too.

Can you please explain what was wrong with my attempt? I thought that with my first template I address the root node (i. e. the tag <svg>) and calling xsl:apply-templates select="rect" will select all "rect" child elements and apply the specified template.

Bye,

Stefan

Andreas Gieriet 21-Aug-12 7:00am

The root node is "/", the root element is "/svg", not "/".
Since there is a leading "/", it is an absolute XPath.
See w3schools.com: XPath Tutorial for a quick introduction on XPath.
Cheers
Andi

Alpman · Accepted Answer · 2012-08-27T02:01:00

According to an answer I got at w3schools.com I had to include the svg namespace in the XSLT and add "svg" to exclude-result-prefixes:

XML

...
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msxsl="urn:schemas-microsoft-com:xslt"
    xmlns:svg="http://www.w3.org/2000/svg"
    exclude-result-prefixes="msxsl svg"
>
...

Then I can address the templates like this:

XML

...
<xsl:apply-templates select="//svg:rect"/>
...

...
<xsl:template match="svg:rect">
...