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Subject: Re: [docbook-apps] Customizing substep labels - adding a new numeration?

Hi Robert,
Yes, this requires a customization. I assume this is for PDF output. In this case, I would suggest bypassing most of the templates used for generating the list numbers.

For FO output, in the file fo/lists.xsl you will find the template with match="d:orderedlist/d:listitem" is this line that engages the line numbering machinery:

 <xsl:apply-templates select="." mode="item-number"/>

Since this template uses a mode, you can customize the behavior for a specific element without having to change it for all list items. In your case, you want to change only a nested listitem. This customization should do what you need:

<xsl:template match="d:orderedlist[not(ancestor::d:orderedlist)]/
 <xsl:variable name="lang">
   <xsl:call-template name="l10n.language"/>

   <xsl:when test="$lang = 'ru'">
     <xsl:variable name="russian.letters">!@#$%^*()</xsl:variable>
<xsl:variable name="number" select="count(preceding-sibling::listitem) + 1"/>
     <xsl:value-of select="substring($russan.letters, $number, 1)"/>

This template matches only on second level numbered list items. It first calls the 'l10n.language' template to normalize the locale for DocBook. It sets the variable $lang from the @xml:lang attribute in the document. However, the value it returns is not the original @xml:lang value, but the name of the locale file in the 'common' directory. For Russion, the filename is 'ru.xml', so the $lang variable here would be set to 'ru' if @lang="RU" or "RU_RU" or any letter case variant.

Then there is a choose statement, whose xsl:otherwise uses xsl:apply-imports to fall back the original DocBook templates for non-Russian documents.

For Russian, I set up a variable named 'russian.letters' which should edited to contain the Russian alphabet. Since I cannot type the Russian alphabet, I substituted some random symbols in this example.

The $number variable is set to the numeric position of the current listitem, arrived at by counting the previous siblings and adding 1.

Then it selects the letter based on the numeric position in the alphabet by using the substring function.

The good thing about this approach is that you have complete control over the behavior of Russian documents, without needing to understand all the numbering templates. And you get the default behavior if it is not Russian.

For HTML output, this approach will not work because it does not use any of those templates used for FO output. HTML output uses <ol> with @type to indicate numbering, and I don't think @type supports the Russian alphabet. You would have to switch from <ol> to <dl> and use your own letters in the <dt> element.

Bob Stayton
Sagehill Enterprises

From: "Robert Fekete" <frobert@balabit.com>
Sent: Friday, October 12, 2012 4:07 AM
To: "DocBook Apps" <docbook-apps@lists.oasis-open.org>
Subject: [docbook-apps] Customizing substep labels - adding a new


I have received a request that requires some stylesheet customization and
I am a bit clueless about how to do it properly.

In some procedures of our docs, we have steps labeled with numbers and
substeps labeled with lowercase letters - that's the Docbook default as
far as I know.
The task would be to label the substeps with Cyrillic letters, but only in
the Russian version of the docs.

I guess I have to customize:

- the common/common.xsl/<xsl:template name="next.numeration"> template to
add a new cyrillic numeration to the list (and somehow test that this
happens only if the language of the root node is Russian)

- and probably the common/labels.xsl/<xsl:template
name="autolabel.format"> template to add an entry for cyrillic numeration

- maybe even common/common.xsl/<xsl:template match="orderedlist/listitem"

What I don't see from the stylesheets, is that somewhere I guess I should
provide a list of the cyrillic alphabet, so that the stylesheets know how
to label the steps, but I don't see where or how I could add this.

Is the following process valid, or am I missing something? I'll need this
customization for 1.75.2 and the current 1.77-ns stylesheets as well.

Any help is appreciated.

Kind Regards,

Robert Fekete

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