Creating links within a document using a preexisting Table of Contents

StackOverflow https://stackoverflow.com/questions/12906719

سؤال

I've got a large number of OCRed documents that have been partially marked up. I'm trying to create working links within the table of contents. The table of contents are formatted

<document>
  <text>
     <list>
        <item>Chapter 1<ref>7</ref></item>
        <item>Chapter 2<ref>27</ref></item>
        <item>Chapter 3<ref>54</ref></item>
        <item>Chapter 4<ref>77</ref></item>
     </list>
     <body>
      OCRED text <pb n="7-8" xml:id="VAB0003"/> OCRED text
     </body>   
</document>

Is there a way to test if the value of ref is the same as part of the value of @n in pb and then if so pull the value of @xml:id and use that in the ref element? Is there a less convoluted way of accomplishing this?

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المحلول

I think you're looking for something like this:

<xsl:template match="ref*">
  <xsl:variable name="page" select="."/>
  <xsl:variable name="target" 
                select="//pb[contains(
                        concat(' ',translate(@n,'-',' '),' '), 
                        concat(' ',$page,' '))]/@xml:id"/>
  <xsl:copy>
    <xsl:if test="$target">
      <xsl:attribute name='target'>
        <xsl:value-of select="$target"/>
      </xsl:attribute>
    </xsl:if>
    <xsl:apply-templates select="@*|node()"/>
  </xsl:copy>
</xsl:template>

The complicated concatenations are there in the definition of target to ensure that you match on a full token of the page number; in XSLT 2.0 it can be done a little more gracefully and without the concats, but not much more succinctly.

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