xml:base problem with nested XIncludes

Hi

A problem with nested XIncludes that I raised in 2005 has either not
been resolved, or has risen again in DB5 and 1.75.1.  The problem is in
the value of xml:base which results in the generation of bad paths to
files referenced in a nested XInclude.  A sample program to demonstrate
the problem is below, and the separate files are attached.  XEP reports
the bad paths - see below - but fop just fails to produce any diagnostic
output.  A work around is to pre-process the XIncludes and appropriate
xsl code is in the file copy.xsl

root0.xml XIncludes root1.xml which XIncludes file0.xml which references
a jpg file in a <figure>.  The file cannot be found because the xml:base
is wrongly applied.

Tool chain Oxygen 10.3, DB5, XSL 1.75.1, Saxon-6.5.5 and XEP-4.10-20070727.
java version "1.5.0_19"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_19-b02-306)
Java HotSpot(TM) Client VM (build 1.5.0_19-138, mixed mode)



---File: root0.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE article>
<article
   xml:id="test" xmlns="http://docbook.org/ns/docbook" version="5.0"
xml:lang="EN">
<info>
<title>Main title</title>
</info>
<para></para>
<xi:include href="root1.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
</article>



---File: root1.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE appendix>
<appendix xml:id="file0" xmlns="http://docbook.org/ns/docbook"
version="5.0" xml:lang="EN">
<info>
<title>root1 title</title>
</info>
<xi:include href="file0.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
</appendix>



---File: file0.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE section>
<section xml:id="Pictures" xmlns="http://docbook.org/ns/docbook"
version="5.0" xml:lang="EN">
<info><title>Pictures</title></info>
<figure xml:id="LowRoad"><title>Medieval Road</title>
<mediaobject>
<imageobject role="xhml">
<imagedata fileref="images/Old_road_grass-54X.jpg" format="JPG"
width="100%" contentwidth="12.0cm" align="center"/>
</imageobject>
<imageobject role="fo">
<imagedata fileref="images/Old_road_grass-54.jpg" format="JPG"
width="100%" contentwidth="9.0cm" align="center"/>
</imageobject>
<caption><para  role="Start">Medieval Road</para></caption>
</mediaobject>
</figure>
</section>



---File: root.xsl
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:import
href="/Applications/Utilities/oxygen/10.3/oxygen/frameworks/docbook/5.0/docbook-xsl-ns-1.75.1/fo/docbook.xsl"/>
</xsl:stylesheet>



---XEP failure report
---The image file referred to in file0.xml cannot be found.
---Nested Xinclude problem - XEP gives the bad filename
         [error] Failed to create image
file:/Library/WebServer/Documents/_XML/_test//Library/WebServer/Documents/_XML/_test/images/Old_road_grass-54.jpg
of type image/jpeg
         [error] java.io.FileNotFoundException:
/Library/WebServer/Documents/_XML/_test/Library/WebServer/Documents/_XML/_test/images/Old_road_grass-54.jpg
(No such file or directory)



If the nested Xincludes are expanded first using the following XSL, then
the nested problem is avoided and all is well, the image file is found
and displayed
---File: copy.xsl
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
exclude-result-prefixes="xi" xmlns:xi="http://www.w3.org/2001/XInclude">
<xsl:output indent="yes" method="xml" encoding="UTF-8"/>
<xsl:strip-space elements="*"/>
<!-- Match document -->
<xsl:template match="/">
<xsl:apply-templates mode="copy" select="."/>
</xsl:template>
<!-- Deep copy template -->
<xsl:template match="*|text()|@*" mode="copy">
<xsl:copy>
<xsl:apply-templates mode="copy" select="@*"/>
<xsl:apply-templates mode="copy"/>
</xsl:copy>
</xsl:template>
<!-- exclude some attributes added by the XInclude part -->
<xsl:template match="@*[name()='xml:base']" mode="copy"/>
<!-- Handle default matching -->
<xsl:template match="*"/>
</xsl:stylesheet>


Ron
--
Ron Catterall Ph.D. D.Sc.
ron@...
http://catterall.net

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE article>
<article xml:id="test" xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="EN">
<info>
<title>Main title</title>
</info>
<para></para>
<xi:include href="root1.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
</article>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE appendix>
<appendix xml:id="file0" xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="EN">
<info>
<title>root1 title</title>
</info>
<xi:include href="file0.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
</appendix>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE section>
<section xml:id="Pictures" xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="EN">
<info><title>Pictures</title></info>
<figure xml:id="LowRoad"><title>Medieval Road</title>
<mediaobject>
<imageobject role="xhml">
<imagedata fileref="images/Old_road_grass-54X.jpg" format="JPG" width="100%" contentwidth="12.0cm" align="center"/>
</imageobject>
<imageobject role="fo">
<imagedata fileref="images/Old_road_grass-54.jpg" format="JPG" width="100%" contentwidth="9.0cm" align="center"/>
</imageobject>
<caption><para  role="Start">Medieval Road</para></caption>
</mediaobject>
</figure>
</section>

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:import href="/Applications/Utilities/oxygen/10.3/oxygen/frameworks/docbook/5.0/docbook-xsl-ns-1.75.1/fo/docbook.xsl"/>
</xsl:stylesheet>
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    exclude-result-prefixes="xi" xmlns:xi="http://www.w3.org/2001/XInclude">
    <xsl:output indent="yes" method="xml" encoding="UTF-8"/>

    <xsl:strip-space elements="*"/>

    <!-- Match document -->
    <xsl:template match="/">
        <xsl:apply-templates mode="copy" select="."/>
    </xsl:template>
    <!-- Deep copy template -->
    <xsl:template match="*|text()|@*" mode="copy">
        <xsl:copy>
            <xsl:apply-templates mode="copy" select="@*"/>
            <xsl:apply-templates mode="copy"/>
        </xsl:copy>
    </xsl:template>
    <!-- exclude some attributes added by the XInclude part -->
    <xsl:template match="@*[name()='xml:base']" mode="copy"/>
    <!-- Handle default matching -->
    <xsl:template match="*"/>
</xsl:stylesheet>