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XSLT Case Conversion Solution, cont.
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Full Source Code
XML File
We are passing information about how a sentence should be converted.
<?xml version="1.0"?>
<stringfuncexample>
<convert tocase='proper'>HOW ARE YOU TODAY?</convert>
<convert tocase='proper'>RECURSION is really fun?</convert>
<convert tocase='proper'>XSLT can BE WRITTEN like a proCEDUral Language?</convert>
<convert tocase='upper'>ConVerTINg to uppEr Case IS an intereSTING exerCIse?</convert>
<convert tocase='lower'>ConVerTINg to lowEr Case IS an intereSTING exerCIse?</convert>
<convert tocase='proper'>ConVerTINg to propEr Case IS an intereSTING exerCIse?</convert>
</stringfuncexample>
XSL File
In the following XSL we examine the tocase attribute, to determine
whether our text should be lower, upper or proper case, which we then output
into a table.
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" />
<xsl:variable name="lcletters">
abcdefghijklmnopqrstuvwxyz</xsl:variable>
<xsl:variable name="ucletters">
ABCDEFGHIJKLMNOPQRSTUVWXYZ</xsl:variable>
<xsl:template match="/">
<html>
<head />
<body>
<table width='90%' border='1'>
<tr>
<td>Original Value</td>
<td>Conversion</td>
<td>New Value</td>
</tr>
<xsl:for-each select="stringfuncexample/convert">
<tr>
<xsl:if test="position() mod 2 = 1">
<xsl:attribute name='bgcolor'>gray</xsl:attribute>
</xsl:if>
<td>
<xsl:value-of select="." />
</td>
<td>
<xsl:value-of select="@tocase" />
</td>
<td>
<xsl:call-template name='convertcase'>
<xsl:with-param name='toconvert' select='.' />
<xsl:with-param name='conversion'
select='@tocase' />
</xsl:call-template>
</td>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
<xsl:template name='convertcase'>
<xsl:param name='toconvert' />
<xsl:param name='conversion' />
<xsl:choose>
<xsl:when test='$conversion="lower"'>
<xsl:value-of
select="translate($toconvert,$ucletters,$lcletters)" />
</xsl:when>
<xsl:when test='$conversion="upper"'>
<xsl:value-of
select="translate($toconvert,$lcletters,$ucletters)" />
</xsl:when>
<xsl:when test='$conversion="proper"'>
<xsl:call-template name='convertpropercase'>
<xsl:with-param name='toconvert'>
<xsl:value-of
select="translate($toconvert,$ucletters,$lcletters)" />
</xsl:with-param>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select='$toconvert' />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name='convertpropercase'>
<xsl:param name='toconvert' />
<xsl:if test="string-length($toconvert) > 0">
<xsl:variable name='f'
select='substring($toconvert, 1, 1)' />
<xsl:variable name='s' select='substring($toconvert, 2)' />
<xsl:call-template name='convertcase'>
<xsl:with-param name='toconvert' select='$f' />
<xsl:with-param name='conversion'>upper</xsl:with-param>
</xsl:call-template>
<xsl:choose>
<xsl:when test="contains($s,' ')">
<xsl:value-of select='substring-before($s," ")' />
<xsl:call-template name='convertpropercase'>
<xsl:with-param name='toconvert'
select='substring-after($s," ")' />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select='$s' />
</xsl:otherwise>
</xsl:choose>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
HTML Output
| Original Value | Conversion | New Value |
| HOW ARE YOU TODAY? |
proper |
How Are You Today? |
| RECURSION is really fun? |
proper |
Recursion Is Really Fun? |
| XSLT can BE WRITTEN like a proCEDUral Language? |
proper |
Xslt Can Be Written Like A Procedural Language? |
| ConVerTINg to uppEr Case IS an intereSTING exerCIse? |
upper |
CONVERTING TO UPPER CASE IS AN INTERESTING EXERCISE? |
| ConVerTINg to lowEr Case IS an intereSTING exerCIse? |
lower |
converting to lower case is an interesting exercise? |
| ConVerTINg to propEr Case IS an intereSTING exerCIse? |
proper |
Converting To Proper Case Is An Interesting Exercise? |
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