is there any operation such as trim in xslt?

Question

i wrote a xslt code which converts a xml file to a html file which contains lot of tables, one of the column contains messages(very long messages), but that line starts with

Answer 1

using XSLT1 with registerLangFunctions

Today, ~10 years after (complex) XSLT2 standard released, many projects yet use (faster) XSLT1. Perhaps the problem is not only "simple vs complex", but XSLT1 is a fact for Perl, PHP, Python, PostgreSQL, and many other communities.

So, a solution for Perl, PHP and Python: use your main language to do trim and another usual functions that not exists into XSLT1.

Here an example of PHP: https://en.wikibooks.org/wiki/PHP_Programming/XSL/registerPHPFunctions

Answer 2

is there any operation such as trim in xslt?

I. XSLT 1.0

No, and it is rather difficult to perform "trim" in XSLT 1.0.

Here is the trim function/template from FXSL:

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:import href="trim.xsl"/>

  <!-- to be applied on trim.xml -->

  <xsl:output method="text"/>
  <xsl:template match="/">
    '<xsl:call-template name="trim">
        <xsl:with-param name="pStr" select="string(/*)"/>
    </xsl:call-template>'
  </xsl:template>
</xsl:stylesheet>

When this transformation is performed (you have to download at least a few other stylesheet modules, which comprise the complete import tree) on this XML document:

<someText>

   This is    some text   

</someText>

the wanted, correct result is produced:

'This is    some text'

---

II In XSLT 2.0 / XPath 2.0

Still a little bit tricky, but very short:

     if (string(.))
       then replace(., '^\s*(.+?)\s*$', '$1')
       else ()

Here is the complete, corresponding transformation:

<xsl:stylesheet version="2.0"   xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output omit-xml-declaration="yes" indent="yes"/>

 <xsl:template match="/*">
     "<xsl:sequence select=
         "if (string(.))
           then replace(., '^\s*(.+?)\s*$', '$1')
           else ()
           "/>"
 </xsl:template>
</xsl:stylesheet>

and when applied on the same XML document (above), the same correct result is produced:

"This is    some text"

Answer 3

Unfortunately you don't say what you expect your "trim()" function to do. But from your description of the requirement, I would guess that normalize-space() is close enough:

starts-with(normalize-space(message), 'Verification passed'))

The XPath normalize-space() function differs from the Java trim() method in that (a) it replaces internal sequences of whitespace characters by a single space, and (b) it has a slightly different definition of whitespace.

Answer 4

 <xsl:variable name="Colour">
 <xsl:choose>
 <xsl:when test="contains(@Message,'Verification failed:')">background-color:red;       </xsl:when>
 <xsl:when test="contains(@Message,'Verification passed:')">background-color:green</xsl:when>
 <xsl:otherwise> </xsl:otherwise>
 </xsl:choose>
 </xsl:variable>

 <tr style="{$Colour}">
 <td> <xsl:value-of select="@Time"/></td>
 <td>Line <xsl:value-of select="@Line"/></td>
 <td> <xsl:value-of select="@Type"/></td>
 <td> <xsl:value-of select="@Message"/></td>
 </tr>