Hi,
Am Freitag, 23. Dezember 2011, 22:34:28 schrieb Xmplar:
> I have in a document, d:link - for both links to other text in the
> document (e.g. link to a figure) as well as links to URLs.
> For both types of links I am using d:link.
Any special reason why you omit <xref/>s?
For cross references inside the document itself, I would prefer <xref/> over
<link>. The <xref/> element resolves the reference into the title with
additional information, whereas <link> does not.
Depending on what you insert into <link>, you have to rework your text
whenever a title changes. This is additional work which could be avoided by
using <xref/>s.
> I would like the following code to
> select only those instances where the @linkend contains the string
> 'http' - and to then put angle brackets before and after those URLs. The
> if:test syntax under variable "content" is obviously wrong - what is the
> correct syntax for selecting linkends that are only URLs?
> Thanks
>
> <xsl:template match="d:link" name="link">
> [...]
> <xsl:variable name="content">
> <xsl:if test="contains(linkend,'http')">
^^^^^^^^^^^^^^^^
This expression has several issues:
1. If you write "linkend" it selects a child element instead of
the attribute. This test will always fail as DocBook never
had a "linkend" element.
2. Using linkend attribute here is actually wrong. What you need
is @xlink:href.
Use the linkend attribute only for internal cross-references
(or better avoid it altogether and replace it with <xref/>
as pointed out above).
3. I would recommend to replace the contains() function with
starts-with() as URLs normally starts with a URL scheme like
http, https, ftp, ...
Using contains() in this context is a source for bugs which are
hard to find. :)
Apart from the above code, you could radically simplify the code by using a
different approach:
<xsl:template match="d:link[starts-with(@xlink:href, 'http')]">
<xsl:text>[</xsl:text>
<xsl:apply-imports/>
<xsl:text>]</xsl:text>
</xsl:template>
All the complicated link creation is delegated to the original template (using
xsl:apply-imports).
--
Gruß/Regards
Thomas Schraitle
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