Re: 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 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>
>