Re: [xsl] Best way of testing Hexadecimal value [xslt 1.0]

Not wanting to stop the fun!

But here's a 1.0 solution (a complete stylesheet, I wrote and stopped
posting it hours ago when I saw a solution using 'translate' -- which
is far better) to test for hexadecimal values using a
recursive-template method:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
                       version="1.0">
                                
  <xsl:output method="xml" omit-xml-declaration="yes" />                        
        

  <xsl:variable name="hexDigits" select="'0123456789ABCDEFabcdef'" />

  <xsl:template match="/">
        <xsl:variable name="X" select="'#x202f'" />
        <xsl:variable name="Y" select="'#x20yf'" />
        <xsl:call-template name="isHex">
            <xsl:with-param name="value" select="substring-after($X, '#x')" />
        </xsl:call-template>
        <xsl:text>&#xa;</xsl:text>
        <xsl:call-template name="isHex">
            <xsl:with-param name="value" select="substring-after($Y, '#x')" />
         </xsl:call-template>
  </xsl:template>

  <xsl:template name="isHex">
       <xsl:param name="value" />

        <xsl:choose>
            <xsl:when test="not($value = '')">
                <xsl:choose>
                    <xsl:when test="not(contains($hexDigits,
substring($value, 1, 1)))">
                         <xsl:value-of select="'false'" />
                    </xsl:when>
                    <xsl:otherwise>
                         <xsl:call-template name="isHex">
                              <xsl:with-param name="value" 
select="substring($value, 2)" />
                         </xsl:call-template>
                    </xsl:otherwise>
                 </xsl:choose>
            </xsl:when>
            <xsl:otherwise>
                 <xsl:value-of select="'true'" />
            </xsl:otherwise>
         </xsl:choose>
  </xsl:template>

</xsl:stylesheet>

But in 1.0 environment, you should definitely go for the 'translate' solution.

If you can, I encourage to move to a 2.0 environment (unless you are
programming for a browser) :)


On Thu, Aug 26, 2010 at 3:00 PM,  
<pankaj(_dot_)c(_at_)thomsondigital(_dot_)com> wrote:
> Is there any better way to test hexadecimal values.


-- 
Regards,
Mukul Gandhi

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