<?xml version="1.0" encoding="utf-8"?>
<!-- ********************************************************************
$Id$
********************************************************************
This file is part of the XSL DocBook Stylesheet distribution.
See ../README or http://nwalsh.com/docbook/xsl/ for copyright
and other information.
This module implements DTD-independent functions
******************************************************************** -->
<xsl:stylesheet xmlns:xsl= "http://www.w3.org/1999/XSL/Transform" xmlns:src= "http://nwalsh.com/xmlns/litprog/fragment" exclude-result-prefixes= "src" version= "1.0" >
<xsl:template name= "dot.count" >
<!-- Returns the number of "." characters in a string -->
<xsl:param name= "string" />
<xsl:param name= "count" select= "0" />
<xsl:choose >
<xsl:when test= "contains($string, '.')" >
<xsl:call-template name= "dot.count" >
<xsl:with-param name= "string" select= "substring-after($string, '.')" />
<xsl:with-param name= "count" select= "$count+1" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise >
<xsl:value-of select= "$count" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "copy-string" >
<!-- returns 'count' copies of 'string' -->
<xsl:param name= "string" />
<xsl:param name= "count" select= "0" />
<xsl:param name= "result" />
<xsl:choose >
<xsl:when test= "$count>0" >
<xsl:call-template name= "copy-string" >
<xsl:with-param name= "string" select= "$string" />
<xsl:with-param name= "count" select= "$count - 1" />
<xsl:with-param name= "result" >
<xsl:value-of select= "$result" />
<xsl:value-of select= "$string" />
</xsl:with-param>
</xsl:call-template>
</xsl:when>
<xsl:otherwise >
<xsl:value-of select= "$result" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "string.subst" >
<xsl:param name= "string" />
<xsl:param name= "target" />
<xsl:param name= "replacement" />
<xsl:choose >
<xsl:when test= "contains($string, $target)" >
<xsl:variable name= "rest" >
<xsl:call-template name= "string.subst" >
<xsl:with-param name= "string" select= "substring-after($string, $target)" />
<xsl:with-param name= "target" select= "$target" />
<xsl:with-param name= "replacement" select= "$replacement" />
</xsl:call-template>
</xsl:variable>
<xsl:value-of select= "concat(substring-before($string, $target), $replacement, $rest)" />
</xsl:when>
<xsl:otherwise >
<xsl:value-of select= "$string" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "xpointer.idref" >
<xsl:param name= "xpointer" > http://...</xsl:param>
<xsl:choose >
<xsl:when test= "starts-with($xpointer, '#xpointer(id(')" >
<xsl:variable name= "rest" select= "substring-after($xpointer, '#xpointer(id(')" />
<xsl:variable name= "quote" select= "substring($rest, 1, 1)" />
<xsl:value-of select= "substring-before(substring-after($xpointer, $quote), $quote)" />
</xsl:when>
<xsl:when test= "starts-with($xpointer, '#')" >
<xsl:value-of select= "substring-after($xpointer, '#')" />
</xsl:when>
<!-- otherwise it's a pointer to some other document -->
</xsl:choose>
</xsl:template>
<xsl:template name= "length-magnitude" >
<xsl:param name= "length" select= "'0pt'" />
<xsl:choose >
<xsl:when test= "string-length($length) = 0" />
<xsl:when test= "substring($length,1,1) = '0' or substring($length,1,1) = '1' or substring($length,1,1) = '2' or substring($length,1,1) = '3' or substring($length,1,1) = '4' or substring($length,1,1) = '5' or substring($length,1,1) = '6' or substring($length,1,1) = '7' or substring($length,1,1) = '8' or substring($length,1,1) = '9' or substring($length,1,1) = '.'" >
<xsl:value-of select= "substring($length,1,1)" />
<xsl:call-template name= "length-magnitude" >
<xsl:with-param name= "length" select= "substring($length,2)" />
</xsl:call-template>
</xsl:when>
</xsl:choose>
</xsl:template>
<xsl:template name= "length-units" >
<xsl:param name= "length" select= "'0pt'" />
<xsl:param name= "default.units" select= "'px'" />
<xsl:variable name= "magnitude" >
<xsl:call-template name= "length-magnitude" >
<xsl:with-param name= "length" select= "$length" />
</xsl:call-template>
</xsl:variable>
<xsl:variable name= "units" >
<xsl:value-of select= "substring($length, string-length($magnitude)+1)" />
</xsl:variable>
<xsl:choose >
<xsl:when test= "$units = ''" >
<xsl:value-of select= "$default.units" />
</xsl:when>
<xsl:otherwise >
<xsl:value-of select= "$units" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "length-spec" >
<xsl:param name= "length" select= "'0pt'" />
<xsl:param name= "default.units" select= "'px'" />
<xsl:variable name= "magnitude" >
<xsl:call-template name= "length-magnitude" >
<xsl:with-param name= "length" select= "$length" />
</xsl:call-template>
</xsl:variable>
<xsl:variable name= "units" >
<xsl:value-of select= "substring($length, string-length($magnitude)+1)" />
</xsl:variable>
<xsl:value-of select= "$magnitude" />
<xsl:choose >
<xsl:when test= "$units='cm' or $units='mm' or $units='in' or $units='pt' or $units='pc' or $units='px' or $units='em'" >
<xsl:value-of select= "$units" />
</xsl:when>
<xsl:when test= "$units = ''" >
<xsl:value-of select= "$default.units" />
</xsl:when>
<xsl:otherwise >
<xsl:message >
<xsl:text > Unrecognized unit of measure: </xsl:text>
<xsl:value-of select= "$units" />
<xsl:text > .</xsl:text>
</xsl:message>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "length-in-points" >
<xsl:param name= "length" select= "'0pt'" />
<xsl:param name= "em.size" select= "10" />
<xsl:param name= "pixels.per.inch" select= "90" />
<xsl:variable name= "magnitude" >
<xsl:call-template name= "length-magnitude" >
<xsl:with-param name= "length" select= "$length" />
</xsl:call-template>
</xsl:variable>
<xsl:variable name= "units" >
<xsl:value-of select= "substring($length, string-length($magnitude)+1)" />
</xsl:variable>
<xsl:choose >
<xsl:when test= "$units = 'pt'" >
<xsl:value-of select= "$magnitude" />
</xsl:when>
<xsl:when test= "$units = 'cm'" >
<xsl:value-of select= "$magnitude div 2.54 * 72.0" />
</xsl:when>
<xsl:when test= "$units = 'mm'" >
<xsl:value-of select= "$magnitude div 25.4 * 72.0" />
</xsl:when>
<xsl:when test= "$units = 'in'" >
<xsl:value-of select= "$magnitude * 72.0" />
</xsl:when>
<xsl:when test= "$units = 'pc'" >
<xsl:value-of select= "$magnitude * 12.0" />
</xsl:when>
<xsl:when test= "$units = 'px'" >
<xsl:value-of select= "$magnitude div $pixels.per.inch * 72.0" />
</xsl:when>
<xsl:when test= "$units = 'em'" >
<xsl:value-of select= "$magnitude * $em.size" />
</xsl:when>
<xsl:otherwise >
<xsl:message >
<xsl:text > Unrecognized unit of measure: </xsl:text>
<xsl:value-of select= "$units" />
<xsl:text > .</xsl:text>
</xsl:message>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "pi-attribute" >
<xsl:param name= "pis" select= "processing-instruction('BOGUS_PI')" />
<xsl:param name= "attribute" > filename</xsl:param>
<xsl:param name= "count" > 1</xsl:param>
<xsl:choose >
<xsl:when test= "$count>count($pis)" >
<!-- not found -->
</xsl:when>
<xsl:otherwise >
<xsl:variable name= "pi" >
<xsl:value-of select= "$pis[$count]" />
</xsl:variable>
<xsl:variable name= "pivalue" >
<xsl:value-of select= "concat(' ', normalize-space($pi))" />
</xsl:variable>
<xsl:choose >
<xsl:when test= "contains($pivalue,concat(' ', $attribute, '='))" >
<xsl:variable name= "rest" select= "substring-after($pivalue,concat(' ', $attribute,'='))" />
<xsl:variable name= "quote" select= "substring($rest,1,1)" />
<xsl:value-of select= "substring-before(substring($rest,2),$quote)" />
</xsl:when>
<xsl:otherwise >
<xsl:call-template name= "pi-attribute" >
<xsl:with-param name= "pis" select= "$pis" />
<xsl:with-param name= "attribute" select= "$attribute" />
<xsl:with-param name= "count" select= "$count + 1" />
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "lookup.key" >
<xsl:param name= "key" select= "''" />
<xsl:param name= "table" select= "''" />
<xsl:if test= "contains($table, ' ')" >
<xsl:choose >
<xsl:when test= "substring-before($table, ' ') = $key" >
<xsl:variable name= "rest" select= "substring-after($table, ' ')" />
<xsl:choose >
<xsl:when test= "contains($rest, ' ')" >
<xsl:value-of select= "substring-before($rest, ' ')" />
</xsl:when>
<xsl:otherwise >
<xsl:value-of select= "$rest" />
</xsl:otherwise>
</xsl:choose>
</xsl:when>
<xsl:otherwise >
<xsl:call-template name= "lookup.key" >
<xsl:with-param name= "key" select= "$key" />
<xsl:with-param name= "table" select= "substring-after(substring-after($table,' '), ' ')" />
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:if>
</xsl:template>
<xsl:template name= "xpath.location" >
<xsl:param name= "node" select= "." />
<xsl:param name= "path" select= "''" />
<xsl:variable name= "next.path" >
<xsl:value-of select= "local-name($node)" />
<xsl:if test= "$path != ''" > /</xsl:if>
<xsl:value-of select= "$path" />
</xsl:variable>
<xsl:choose >
<xsl:when test= "$node/parent::*" >
<xsl:call-template name= "xpath.location" >
<xsl:with-param name= "node" select= "$node/parent::*" />
<xsl:with-param name= "path" select= "$next.path" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise >
<xsl:text > /</xsl:text>
<xsl:value-of select= "$next.path" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "comment-escape-string" >
<xsl:param name= "string" select= "''" />
<xsl:if test= "starts-with($string, '-')" >
<xsl:text > </xsl:text>
</xsl:if>
<xsl:call-template name= "comment-escape-string.recursive" >
<xsl:with-param name= "string" select= "$string" />
</xsl:call-template>
<xsl:if test= "substring($string, string-length($string), 1) = '-'" >
<xsl:text > </xsl:text>
</xsl:if>
</xsl:template>
<xsl:template name= "comment-escape-string.recursive" >
<xsl:param name= "string" select= "''" />
<xsl:choose >
<xsl:when test= "contains($string, '--')" >
<xsl:value-of select= "substring-before($string, '--')" />
<xsl:value-of select= "'- -'" />
<xsl:call-template name= "comment-escape-string.recursive" >
<xsl:with-param name= "string" select= "substring-after($string, '--')" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise >
<xsl:value-of select= "$string" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "count.uri.path.depth" >
<xsl:param name= "filename" select= "''" />
<xsl:param name= "count" select= "0" />
<xsl:choose >
<xsl:when test= "contains($filename, '/')" >
<xsl:call-template name= "count.uri.path.depth" >
<xsl:with-param name= "filename" select= "substring-after($filename, '/')" />
<xsl:with-param name= "count" select= "$count + 1" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise >
<xsl:value-of select= "$count" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name= "trim.common.uri.paths" >
<xsl:param name= "uriA" select= "''" />
<xsl:param name= "uriB" select= "''" />
<xsl:param name= "return" select= "'A'" />
<xsl:choose >
<xsl:when test= "contains($uriA, '/') and contains($uriB, '/') and substring-before($uriA, '/') = substring-before($uriB, '/')" >
<xsl:call-template name= "trim.common.uri.paths" >
<xsl:with-param name= "uriA" select= "substring-after($uriA, '/')" />
<xsl:with-param name= "uriB" select= "substring-after($uriB, '/')" />
<xsl:with-param name= "return" select= "$return" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise >
<xsl:choose >
<xsl:when test= "$return = 'A'" >
<xsl:value-of select= "$uriA" />
</xsl:when>
<xsl:otherwise >
<xsl:value-of select= "$uriB" />
</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
