[docbook-apps] DocBook chunk.xsl resolves path to docbook.xsl incorrectly with Xalan (with Windows, but not with *nix)

[Christopher BROWN]

Hello,

I'm observing a strange problem, where I use the "html/chunk.xsl"
stylesheet via Ant and the <xslt> task.  It works under Linux (Ubuntu
12.04) and Mac OS X 10.8, but not under Windows.  The problem seems to be
that (as expected) under *nix, the "chunk.xsl" imports the "docbook.xsl"
stylesheet (in the same directory, because there's no directory in the
XSLT, which is correct), but under Windows it resolves against the
"basedir" of Ant and not the "basedir" of the XSLT task.

I'm using:
- DocBook HTML stylesheets 1.76.1
- Ant 1.8.4
- Java 6.0 u37
- Xalan 2.7.1

Here's the relevant bit of my "build.xml" file (${vbuild} is an absolute
path):

        <xslt basedir="${vbuild}/docbook/src/${l10n}"
style="${vbuild}/docbook/custom/${l10n}/custom-html.xsl"
              destdir="${vbuild}/docbook/out/${l10n}" extension=".html"
              includes="*.xml">
            <classpath refid="xalan.classpath"/>
        </xslt>

"xalan.classpath" includes: resolver.jar, serializer.jar, xalan.jar,
xercesImpl.jar

Here's the output from Ant:

     [xslt] Transforming into c:\java\build\temp\ProjectName\docbook\out\en
     [xslt] Processing
c:\java\build\temp\ProjectName\docbook\src\en\manual.xml to
c:\java\build\temp\ProjectName\docbook\out\en\manual.html
     [xslt] Loading stylesheet
c:\java\build\temp\ProjectName\docbook\custom\en\custom-html.xsl
     [xslt]
c:\java\build\temp\ProjectName\docbook-xsl-1.76.1\html\chunk.xsl:25:33:
Error! Had IO Exception with stylesheet file: docbook.xsl Cause:
java.io.FileNotFoundException: C:\java\projects\ProjectName\docbook.xsl
(The system cannot find the file specified)
     [xslt]
c:\java\build\temp\ProjectName\docbook-xsl-1.76.1\html\chunk.xsl:32:38:
Error! Had IO Exception with stylesheet file: chunk-common.xsl Cause:
java.io.FileNotFoundException:
C:\java\projects\ProjectName\chunk-common.xsl (The system cannot find the
file specified)
     [xslt]
c:\java\build\temp\ProjectName\docbook-xsl-1.76.1\html\chunk.xsl:50:37:
Error! Had IO Exception with stylesheet file: chunk-code.xsl Cause:
java.io.FileNotFoundException: C:\java\projects\viewshell\chunk-code.xsl
(The system cannot find the file specified)

Like I say, it works under *nix but not under Windows.  I can't see what
needs configuring so that under Windows, the "chunk.xsl" looks in the same
directory as itself for "docbook.xsl".  I've not modified the standard
docbook files.

My "custom-html.xsl" customization layer contains this import on *nix
(first line) and Windows (second line) :

 <xsl:import
href="/Users/cbr/dev/build/temp/ProductName/docbook-xsl-1.76.1/html/chunk.xsl"/>
 <xsl:import
href="c:\java\build\temp\ProductName\docbook-xsl-1.76.1\html\chunk.xsl"/>

...the path is hard-coded into this file as part of the build process (ant
copy, filtering on).  On all platforms, "custom-html.xsl" finds
"chunk.xsl", but on Windows, "chunk.xsl" can't find "docbook.xsl".

Thanks,
Christopher