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Re: Sort Question

Subject: Re: Sort Question
From: omprakash.v@xxxxxxxxxxxxx
Date: Thu, 2 Jun 2005 13:26:51 +0530
padspaces
Hi,

    Please find below the stylesheet that should solve your problem.

Just in case you would like to know:

Problems : The first element ColorTypeRed should be simply Red. I can't
figure out why the
ColorType is being injected here. If I remove the sort I get the correct
structure (in the wrong order).


Ans: My first thought was the ColorType came from the lone EnumeratedType
child of the tblEnumeratedTypes_WC element and modified the xsl. This
worked perfectly and my guess was proven right.



Next, the Range_Type should be

RANGE_TYPE ( UINT8, ColorType, Red, White ) ;

I can't for the life of me figure out how to restucture the template

           <xsl:template match="tblEnumeratedTypes_WC" mode="range-macro">


Ans: This one was a lot tougher. My original idea was to store the sorted
nodes in a variable and access the nodes using xpath expressions. But this
didn't work as I  found out to my surprise that the text output method does
not allow you create elements not even create them and bind them to a
variable. Then I  found the match template for tblEnumValues_WC node  was
being called in sorted order and used position() arrive at the desired
result. However, the stylesheet needs to receive the position of the last
node as a parameter or needs to compute it in a previous pass to allow the
stylesheet to scale.


Hope this helps.

Cheers,
prakash




<?xml version="1.0" encoding="ISO-8859-1"?>
<?altova_sps C:\Documents and Settings\simonj\My
Documents\us101\xml\Messages.sps?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xalan
="http://xml.apache.org/xalan"
>
           <xsl:output method="text"/>
           <xsl:strip-space elements="*"/>

           <xsl:param name="file" select=" 'MESSAGES.h' "/>

           <xsl:variable name="assignment" select=" ' = ' "/>
           <xsl:variable name="terminator" select="  ' ;' "/>

           <xsl:template match="dataroot">
                               <xsl:apply-templates select="node()"/>
           </xsl:template>


<!--
-->
<!-- This template matches an Enumerated Type                -->
<!--
-->
<!--           It creates a header for the type and then     -->
<!--           creates the C struct.
-->
<!--
-->

           <xsl:template match="tblEnumeratedTypes_WC" priority="1">
                     <xsl:choose>
                               <xsl:when test="1=position()">
                                          <xsl:call-template name
="SectionHeader">
                                                    <xsl:with-param
name="SectionName" >Enumerated Types</xsl:with-param>
                                          </xsl:call-template>
                               </xsl:when>
                     </xsl:choose>
                     <xsl:apply-templates select="." mode="doc"/>
                     <xsl:apply-templates select="." mode="struct"/>
                     <xsl:apply-templates select="." mode="range-macro"/>
           </xsl:template>


<!--
-->
<!--      This template is used to create the Section Headers
-->
<!--
-->

           <!-- Should Be Centered ?? -->
           <xsl:template name="SectionHeader">
                     <xsl:param name="SectionName"/>

//----------------------------------------------------------------------
----------------

//----------------------------------------------------------------------
----------------
           //        <xsl:value-of select="$SectionName"/>

//----------------------------------------------------------------------
----------------

//----------------------------------------------------------------------
----------------
           </xsl:template>



<!--
-->
<!--      This template creates the header for an enumerated Type
-->
<!--
-->

           <xsl:template match="tblEnumeratedTypes_WC" mode="doc">

//----------------------------------------------------------------------
----------------
           // Name                  : <xsl:apply-templates select
="EnumeratedType"/>
           // Description    : <xsl:apply-templates select="Description"/>


//----------------------------------------------------------------------
----------------
           </xsl:template>




<!--
-->
<!--      This template creates the structure for an enumerated Type
-->
<!--
-->
           <xsl:template match="tblEnumeratedTypes_WC" mode="struct">

           enum {
                               <xsl:apply-templates select
="tblEnumValues_WC">
                                          <xsl:sort select="EnumValue"/>
                               </xsl:apply-templates>
           }   ;
           </xsl:template>

<!--
-->
<!--      This template creates the line for each of the enumerations
within         -->
<!--      an Enumerated Type
-->
<!--
-->

           <xsl:template match="tblEnumValues_WC">
                     <xsl:call-template name="padSpaces">
                               <xsl:with-param name="text" >
                                          <xsl:call-template name
="removeSpaces">
                                                    <xsl:with-param name
="text"
select="EnumValueDescription"/>
                                          </xsl:call-template>
                               </xsl:with-param>
                               <xsl:with-param name="size"
>20</xsl:with-param>
                     </xsl:call-template>

                     <xsl:text> = </xsl:text>

                     <!-- If we are on the last line, dont add a "," or
carriage return -->
                     <xsl:value-of select="EnumValue"/>
                     <xsl:choose>
                               <xsl:when test="last()=position()">
                               </xsl:when>

                               <xsl:otherwise>
                                          <xsl:text>, &#x0a;
</xsl:text>
                               </xsl:otherwise>
                     </xsl:choose>

           </xsl:template>



<!--
-->
<!--      This template creates call to the RANGE_TYPE Macro for an
enumerated Type     -->
<!--
-->

           <xsl:template match="tblEnumeratedTypes_WC" mode="range-macro">

           <xsl:variable name="ET" select="EnumeratedType"/>

          RANGE_TYPE ( UINT8, <xsl:value-of select="$ET"/>,

                     <xsl:apply-templates select="tblEnumValues_WC" mode
="makecopy">
                     <xsl:sort select="EnumValue"/>
                     </xsl:apply-templates>


           </xsl:template>



<xsl:template match="tblEnumValues_WC" mode="makecopy">


<xsl:choose>
<xsl:when test="position() = 1">
                     <xsl:variable name="Start">
                               <xsl:call-template  name="removeSpaces">
                                          <xsl:with-param name="text"
select="EnumValueDescription"/>
                               </xsl:call-template>
                     </xsl:variable>

<xsl:value-of select="$Start"/>

</xsl:when>
<xsl:when test="position() = 3">
 <xsl:variable name="End" >
 <xsl:call-template  name="removeSpaces">
 <xsl:with-param name="text"
          select="EnumValueDescription"/>
 </xsl:call-template>
 </xsl:variable>

, <xsl:value-of select="$End"/>) ;

</xsl:when>
<xsl:otherwise>

</xsl:otherwise>
</xsl:choose>










</xsl:template>



<!--
-->
<!--
-->
<!--
-->


           <xsl:template name="removeSpaces">
                     <xsl:param name="text"/>
                     <xsl:value-of select="translate($text, '&#x20;', ''
)"/>
           </xsl:template>



<!--
-->
<!--
-->
<!--
-->


           <xsl:template name="padSpaces">
                     <xsl:param name="text"/>
                     <xsl:param name="size"/>
                     <xsl:variable name="spaces" select="'
'" />
                     <xsl:value-of select="$text"/>
                     <xsl:choose>
                               <xsl:when test="string-length($text) &lt;
$size">
                                          <xsl:value-of select="substring
($spaces,
1, $size - string-length($text) )"/>
                               </xsl:when>
                     </xsl:choose>
           </xsl:template>

</xsl:stylesheet>





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