Re: [xslt] I/O error : Is a directory - error processing a DB bookwith docbook-xsl chunk stylesheet

Am Mittwoch, den 21.11.2007, 18:40 -0500 schrieb Daniel Veillard:
> On Wed, Nov 21, 2007 at 06:55:20PM +0100, Daniel Leidert wrote:
> > Hi libxslt authors,
> > 
> > Some time ago I already reported this issue [1], but it seems I forgot
> > to examine it further. Today I got a private mail about the same problem
> > so I decided to find a testcase to debug the problem and I was able to
> > create a very short example, that fails for me with an I/O.
> > 
> > Can you please be so kind to take a look at it and verify, if it's a bug
> > in libxslt? In this case I would open a bug report. Please follow these
> > steps after saving the attached files:
> > 
> > mkdir built-doc
> > xsltproc --output ./built-doc/ book.xsl book.xml
> > 
> > The result for me is:
> > 
> > Writing ch01.html for chapter
> > Writing index.html for book
> > I/O error : Is a directory
> > I/O error : Is a directory
> 
>   Can you run with -v to see what it is trying to do at that point.

It seems to close everything and then it throws this error. I uploaded
the whole output to [1]. If I run it withpout the --output option and
compare the resultng log to the one, that fails, then I cannot find
compelling differences except, the last lines that differ:

> [..]
> found variable 'generate.manifest'
>  xsltIf: test evaluate to 0
>  Shutting down module : http://icl.com/saxon
> -I/O error : Is a directory
> -I/O error : Is a directory
>  freeing transformation dictionary
>  freeing dictionary from stylesheet
>  freeing dictionary from stylesheet
>  freeing dictionary from stylesheet
>  freeing dictionary from stylesheet
> +HTML DOCUMENT
> +encoding=UTF-8
> +standalone=true
> +  DTD(html), PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN, SYSTEM http://www.w3.org/TR/html4/loose.dtd

Not sure if that helps. These last 4 lines (prefixed with the '+' here)
seem to be the related to the cause of the problem. Is it related to ...

[..]
> > The problem seems to be related to the --output option and the doctype-*
> > attributes of xsl:output, because if you don't use --output option or
> > remove the doctype-* attributes, then the example does not fail.
> 
>   Maybe the doctype-* attributes force the presence of a DTD node so
> the main document is not empty and you get the error, that does not 
> sound wrong. What you want to do is set doctypes for the chunks, and
> that should be done on the exslt:document element and not on the
> main stylesheet output definition.

... this comment? To be honest, docbook-xsl sets the encoding and
doctype values via own parameters, that are then given to the
exslt:document function. So giving the doctype* attributes via
xsl:output is not necessary (and normally done via parameters), but also
not wrong, even for chunked output. But is it a bug, that xsltproc fails
in this case? If not: Should there maybe be a comment (in a LIMITATIONS
section) in the manpage (and other related documentation) about this
issue?

[1] http://debian.wgdd.de/temp/error_11/
(be careful: the logs are about 1.5 MB)

Regards, Daniel