How to copy XML and add to existing text using XSLT

Question

I'm struggling with an XML file in which I need to add some curly braces. I'm already using XSLT (1.0) to generate the XML file. The only characters that are missing are the { } around a value in the XML file.

The source file looks like

<?xml version='1.0' encoding='utf-8'?>
<container>
  <pan>
    <id>1</id>
    <input>
      <url>thisfile-1.xml</url>
    </input>
    <output>
      <url>thisoutput-1.txt</url>
    </output>
  </pan>
  <pan>
    <id>2</id>
    <input>
      <url>anotherfile-2.xml</url>
    </input>
    <output>
      <url>oldoutput-2.txt</url>
    </output>
  </pan>
  <pan>
    <id>3</id>
    <input>
      <url>alsofile-3.xml</url>
    </input>
    <output>
      <url>newoutput-3.txt</url>
    </output>
  </pan>
</container>

The variable I need to change is in container/pan/input/url The resulting file should look like

<?xml version='1.0' encoding='utf-8'?>
<container>
  <pan>
    <id>1</id>
    <input>
      <url>{thisfile-1.xml}</url>
    </input>
    <output>
      <url>thisoutput-1.txt</url>
    </output>
  </pan>
  <pan>
    <id>2</id>
    <input>
      <url>{anotherfile-2.xml}</url>
    </input>
    <output>
      <url>oldoutput-2.txt</url>
    </output>
  </pan>
  <pan>
    <id>3</id>
    <input>
      <url>{alsofile-3.xml}</url>
    </input>
    <output>
      <url>newoutput-3.txt</url>
    </output>
  </pan>
</container>

The url's are variable and only the input url should be changed not the output url.

I tried some string replacement examples but they are actually replacing the content, I want to preserve the content and adding the braces only. Any ideas would be appreciated, I'm on a dead end right now.

The XSLT I'm using now is

<xsl:stylesheet version="1.0"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output omit-xml-declaration="no" indent="yes"/>

  <xsl:strip-space elements="*"/>

  <xsl:template match="node()|@*">
    <xsl:copy>
      <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="input/url/text()">
    <xsl:text>replacetext</xsl:text>
  </xsl:template>

</xsl:stylesheet>

This only replaces the input url .... This is as far as my knowledge about XSLT goes.

kjhughes · Accepted Answer · 2016-01-06 14:29:14Z

3

You have everything set up well. Just change

<xsl:text>replacetext</xsl:text>

to

<xsl:value-of select="concat('{', ., '}')"/>

to wrap the existing input/url text (.) with { and } as requested.

XSLT

Here's the full XSLT, which you wisely based on the identity transformation, plus the above fix:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output omit-xml-declaration="no" indent="yes"/>

  <xsl:strip-space elements="*"/>

  <xsl:template match="node()|@*">
    <xsl:copy>
      <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="input/url/text()">
    <xsl:value-of select="concat('{', ., '}')"/>
  </xsl:template>

</xsl:stylesheet>

edited Jan 6, 2016 at 14:29

answered Jan 6, 2016 at 14:05

kjhughes

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1 Comment

Sky Over a year ago

Ah great, did not know the concat() function, very good, that worked like a charm, thank you very very much. You saved my day !

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