source: greenstone3/trunk/web/ui/xslt/preProcess.xsl@ 18453

<?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet version="1.0" 
xmlns:gsf="http://www.greenstone.org/greenstone3/schema/ConfigFormat"
xmlns:gslib="http://www.greenstone.org/skinning"
xmlns:java="http://xml.apache.org/xslt/java"
xmlns:util="xalan://org.greenstone.gsdl3.util.XSLTUtil"
xmlns:xalan="http://xml.apache.org/xalan"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
xmlns:xslt="output.xsl"
>

<xsl:output method="xml"/>




<xsl:template match="/">




    <xsl:for-each select="/skinAndLibraryXsl/skinXsl/xsl:stylesheet">
    
        <!-- produce an exact copy of skin stylesheet, with gslib nodes expanded. -->
        <xsl:variable name="element-name" select="name()"/>
        <xsl:element name="{$element-name}">
            <xsl:for-each select="@*">
                <xsl:variable name="attribute-name" select="name()"/>
                <xsl:attribute name="{$attribute-name}">
                    <xsl:value-of select="."/>
                </xsl:attribute>
            </xsl:for-each>
        
            <!-- merge the attributes of the library stylesheet -->
            <xsl:for-each select="/skinAndLibraryXsl/libraryXsl/xsl:stylesheet/@*">
                <xsl:variable name="attribute-name" select="name()"/>
                <xsl:attribute name="{$attribute-name}">
                    <xsl:value-of select="."/>
                </xsl:attribute>
            </xsl:for-each>
            
             <xsl:call-template name="expand_gslib_elements" />
             
             <!-- add content of library to the skin stylesheet -->
             <xsl:for-each select="/skinAndLibraryXsl/libraryXsl/xsl:stylesheet">
                <xsl:call-template name="expand_gslib_elements" />
             </xsl:for-each>
             

        </xsl:element>
     
        
    </xsl:for-each>
</xsl:template>


<!-- produce an exact copy of the current node, but expand and replace all elements belonging to the gslib namespace. -->
<xsl:template name="expand_gslib_elements">


 <xsl:for-each select="*|text()">
  <xsl:choose>
  
    
    <!-- if node has gslib prefix, expand it into appropriate copy-of or call-template element -->
    <xsl:when test="namespace-uri(.)=namespace::gslib">
    
        <xsl:variable name="name" select="local-name()"/>
        <xsl:choose>
        
        <!-- if library contains a variable of this name, expand to it's value -->
        <xsl:when test="/skinAndLibraryXsl/libraryXsl//xsl:variable[@name = $name]">
            <xsl:element name="xsl:copy-of">
                <xsl:attribute name="select">$<xsl:value-of select="local-name()" /></xsl:attribute>
            </xsl:element>
        </xsl:when>
        
        
        <!-- if library contains a template of this name, expand to a call-template and pass attributes as parameters -->
        <xsl:otherwise>
            <xsl:element name="xsl:call-template">
                <xsl:attribute name="name"> <xsl:value-of select="local-name()" /></xsl:attribute>
                
                <xsl:for-each select="@*">
                    <xsl:element name="xsl:with-param">
                        <xsl:attribute name="name"><xsl:value-of select="name()"/></xsl:attribute>
                        <xsl:call-template name="convert_attVal_to_valueOf" />
                    </xsl:element>                  
                </xsl:for-each> 
            </xsl:element>
        </xsl:otherwise>
    
        </xsl:choose>   
    </xsl:when>

    <xsl:when test="self::text()">
     <xsl:value-of select="."/>
    </xsl:when>

        <!-- if a regular node -->
    <xsl:otherwise>
     <xsl:variable name="element-name" select="name()"/>
     <xsl:element name="{$element-name}">
      <xsl:for-each select="@*">
       <xsl:variable name="attribute-name" select="name()"/>
       <xsl:attribute name="{$attribute-name}">
        <xsl:value-of select="."/>
       </xsl:attribute>
      </xsl:for-each>
      <xsl:call-template name="expand_gslib_elements" />
     </xsl:element>
    </xsl:otherwise>
    
    
  </xsl:choose>
 </xsl:for-each>

</xsl:template>

<!-- converts an attribute value (the current node) into either a literal value or an <xsl:value-of> element -->
<xsl:template name="convert_attVal_to_valueOf">

    <xsl:choose>
    <!-- if attribute is not literal (starts with a "{") -->
        <xsl:when test="starts-with(string(), '&#123;')">
            <xsl:element name="xsl:value-of">
                <xsl:attribute name="disable-output-escaping">yes</xsl:attribute>
                <xsl:attribute name="select"><xsl:value-of select="substring(string(),2,string-length()-2)"/></xsl:attribute>
                </xsl:element>
        </xsl:when>
        <xsl:otherwise>
            <xsl:value-of select="."/>
        </xsl:otherwise>
    </xsl:choose>
</xsl:template>

<xsl:template name="create_dummy_variables">
    <xsl:for-each select="//*[namespace-uri()=namespace::gslib]">
        <xsl:element name="xsl:variable">
            <xsl:attribute name="name">
                <xsl:value-of select="local-name()"/>
            </xsl:attribute>
        </xsl:element>  
    </xsl:for-each>
</xsl:template>
    
    
</xsl:stylesheet>