[xep-support] Creating a Table of Contents from an HTML file being transformed using XSL to FO

[Werner Donné]

Kenneth,

On the spot where you want to generate the table of contents you can do

<xsl:apply-templates select="//*[namespace-uri() = 'http://www.w3.org/1999/xhtml' and
    (local-name() = 'h1' or local-name() = 'h2' or local-name() = 'h3')]" mode="toc"/>

This will encounter the headings in document order, meaning you can write a
template for each level that depends on nothing else. It is also independent
of the level of nesting.

Werner.

Kenneth Aitken wrote:
> Hi Werner,
> 
> Our problem is that we have already adapted an Antenna House stylesheet and it works fine for us except for a couple of problems. Creating a 3-level table of contents is the most urgent issue and I do not have time to create a completely new XSLT stylesheet from scratch.
> We created a TOC with h1 and h2 from XHTML by using the<div> tag to nest h2. But going from h2 to h3 seems to be much more difficult, and as yet, we have not succeeded. Below is the code for creating a TOC, with h1 and h2 (the block after each h1 is contained in a <div class = "x"></div> block). 
> 
> Any ideas?
> 
> Greetings,
> 
> Kenneth
> 
>   <!--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>        TOC
>   =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-->  
>   
> <xsl:template match="html:h1" mode="toc">
>   <fo:block text-align-last="justify" font-size="14pt" space-before="8mm" space-after="4mm">
>     <fo:basic-link internal-destination="{generate-id(.)}">
> 
>    <xsl:apply-templates/>
>     </fo:basic-link>
>     <xsl:text> </xsl:text>
>     <fo:leader leader-length.minimum="12pt" leader-length.optimum="40pt"
>                leader-length.maximum="100%" leader-pattern="space"/>
>     <xsl:text> </xsl:text>
>     <fo:page-number-citation ref-id="{generate-id(.)}"/>
>   </fo:block>
> <!-- the following selects *all* <h2> elements that are on the same level as the <h1> element -->
>   <xsl:apply-templates select="../html:h2" mode="toc"/>
> </xsl:template>
>   
> <xsl:template match="html:h2" mode="toc">
>   <fo:block start-indent="10mm" text-align-last="justify" font-size="10pt">
>     <fo:basic-link internal-destination="{generate-id(.)}">
>       <xsl:apply-templates/>
>     </fo:basic-link>
>     <xsl:text> </xsl:text>
>     <fo:leader leader-length.minimum="12pt" leader-length.optimum="40pt"
>                leader-length.maximum="100%" leader-pattern="dots"/>
>     <xsl:text> </xsl:text>
>     <fo:page-number-citation ref-id="{generate-id(.)}"/>
>   </fo:block>
> </xsl:template>
> 
> 
> *********** REPLY SEPARATOR  ***********
> 
> On 29.09.2004 at 23:12 Werner Donné wrote:
> 
> 
>>Kenneth,
>>
>>Unfortunately the style sheet I have sent only transforms XHTML into
>>XHTML. It just adds a few things to it. Producing XSL-FO with an XSLT
>>style sheet is possible but complex. You can find an example at
>>http://www.antennahouse.com/XSLsample/XSLsample.htm.
>>
>>The disadvantage of this approach, however, is that you have to choose
>>a particular style for your XHTML documents. Starting from an existing
>>set of XSLT files, it is not easy to do customisations. That is because
>>XSLT is not very suitable for a kind of library approach. You can't
>>easily say, for example, "do what you normally do and this little bit
>>different", without knowlegde of the style sheets you are customising.
>>
>>Freedom of style is given to XHTML through CSS, which is very customisable
>>because of its cascading mechanism. It is also less powerful in addressing
>>parts of your input document, as well as in producing a formatted result.
>>You can obtain XSL-FO, however, by using CSSToXSLFO. It can convert an
>>XHTML document with a CSS style sheet into XSL-FO. Since you are an XEP
>>user, you can use the alternative packaging of CSSToXSLFO that feeds
>>the XSL-FO straight into XEP, giving you a XHTML/CSS to PDF or PostScript
>>converter. We do this in our project for reports up to 2000 pages. The
>>solution is quite performant, if you give it enough memory, which is not
>>a problem on a big server.
> 
> 
> 
> 
> 
> 
> 
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-- 
Werner Donné  --  Re BVBA
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B-3300 Tienen
tel: (+32) 486 425803	e-mail: werner.donne at re.be
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