EXSLT - str:split - EXSLT Function Implementation

Supported Version: 1
XML Definition: str.split.xml
Source: str.split.function.xsl

This implementation relies on the exsl:node-set() function.

Source

<func:function name="str:split">
   <xsl:param name="string"
              select="''" />
   <xsl:param name="pattern"
              select="' '" />
   <xsl:choose>
      <xsl:when test="not($string)">
         <func:result select="/.." />
      </xsl:when>
      <xsl:when test="not(function-available('exsl:node-set'))">
         <xsl:message terminate="yes">
        ERROR: EXSLT - Functions implementation of str:split relies on exsl:node-set().
      </xsl:message>
      </xsl:when>
      <xsl:otherwise>
         <xsl:variable name="tokens">
            <xsl:choose>
               <xsl:when test="not($pattern)">
                  <xsl:call-template name="str:_split-characters">
                     <xsl:with-param name="string"
                                     select="$string" />
                  </xsl:call-template>
               </xsl:when>
               <xsl:otherwise>
                  <xsl:call-template name="str:_split-pattern">
                     <xsl:with-param name="string"
                                     select="$string" />
                     <xsl:with-param name="pattern"
                                     select="$pattern" />
                  </xsl:call-template>
               </xsl:otherwise>
            </xsl:choose>
         </xsl:variable>
         <func:result select="exsl:node-set($tokens)/token" />
      </xsl:otherwise>
   </xsl:choose>
</func:function>
<xsl:template name="str:_split-characters">
   <xsl:param name="string" />
   <xsl:if test="$string">
      <token>
         <xsl:value-of select="substring($string, 1, 1)" />
      </token>
      <xsl:call-template name="str:_split-characters">
         <xsl:with-param name="string"
                         select="substring($string, 2)" />
      </xsl:call-template>
   </xsl:if>
</xsl:template>
<xsl:template name="str:_split-pattern">
   <xsl:param name="string" />
   <xsl:param name="pattern" />
   <xsl:choose>
      <xsl:when test="contains($string, $pattern)">
         <xsl:if test="not(starts-with($string, $pattern))">
            <token>
               <xsl:value-of select="substring-before($string, $pattern)" />
            </token>
         </xsl:if>
         <xsl:call-template name="str:_split-pattern">
            <xsl:with-param name="string"
                            select="substring-after($string, $pattern)" />
            <xsl:with-param name="pattern"
                            select="$pattern" />
         </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
         <token>
            <xsl:value-of select="$string" />
         </token>
      </xsl:otherwise>
   </xsl:choose>
</xsl:template>

Change History

Submitted: 2001-10-15
Creator: Kipp Howard

The str:split function splits a string at the occurrences of a pattern string.

Version	Modified	By	Details
1.1	2002-08-20	Craig Stewart	Added 4XSLT implementation to the list.