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Subject: Re: [docbook-apps] Using ePub


Indeed, the xmlns errors indicate a problem in the stylesheet.  You can't 
assign an element to a namespace by trying to assign an ordinary attribute 
with name "xmlns".  It must use the namespace attribute on xsl:element.

Change this (and the like):

        <xsl:element name="item">
          <xsl:attribute 
name="xmlns">http://www.idpf.org/2007/opf</xsl:attribute>

to this:

        <xsl:element name="item" namespace="http://www.idpf.org/2007/opf";>


Bob Stayton
Sagehill Enterprises
bobs@sagehill.net


----- Original Message ----- 
From: "Eric Johnson" <EMJOHNSO@progress.com>
To: "Keith Fahlgren" <abdelazer@gmail.com>
Cc: <docbook-apps@lists.oasis-open.org>
Sent: Thursday, March 26, 2009 3:10 PM
Subject: RE: [docbook-apps] Using ePub


Our system uses Ant and Saxon so the ruby script isn't really going to
work.

I tried building up an Ant target to do the packaging:
<target name="docbook.epub" description="Builds Epub output">
    <java classname="com.icl.saxon.StyleSheet"
classpathref="xslt-classpath" fork="true" dir="." maxmemory="512M">
      <sysproperty key="javax.xml.parsers.DocumentBuilderFactory"
value="org.apache.xerces.jaxp.DocumentBuilderFactoryImpl" />
      <sysproperty key="javax.xml.parsers.SAXParserFactory"
value="org.apache.xerces.jaxp.SAXParserFactoryImpl" />
      <sysproperty
key="org.apache.xerces.xni.parser.XMLParserConfiguration"
value="org.apache.xerces.parsers.XIncludeParserConfiguration" />
      <arg value="-x" />
      <arg value="org.apache.xml.resolver.tools.ResolvingXMLReader" />
      <arg value="-y" />
      <arg value="org.apache.xml.resolver.tools.ResolvingXMLReader" />
      <arg value="-r" />
      <arg value="org.apache.xml.resolver.tools.CatalogResolver" />
      <arg value="${docbook.in}" />
      <arg value="${env.DBCK_HOME}/lib/docbook-xsl-ns/epub/docbook.xsl"
/>
      <arg value="target.database.document=${HTMLSITEMAP}" />
      <arg value="current.docid=${docbook.docid}" />
    </java>
    <copy todir="OEBPS/imagesdb">
      <fileset dir="${env.DBCK_HOME}/custom-ns/imagesdb" />
    </copy>
    <copy todir="OEBPS/images" failonerror="false">
      <fileset dir="images" />
    </copy>
    <delete file="output/${docbook.epub}" failonerror="false" />
    <echo file="mimetype">application/epub+zip</echo>
    <zip destfile="output/${docbook.epub}" whenempty="skip">
      <fileset dir="." includes="mimetype"/>
      <zipfileset dir="OEBPS" prefix="OEBPS" />
      <zipfileset dir="META-INF" prefix="META-INF" />
    </zip>
    <delete failonerror="false" includeemptydirs="true">
      <fileset dir="." includes="mimetype"/>
      <fileset dir="OEBPS" />
      <fileset dir="META-INF" />
    </delete>
  </target>

The problem I'm still running into is that the I get the following
string of errors:
[java] Recoverable error
[java] at xsl:attribute on line 380 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 559 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Writing OEBPS/toc.ncx
[java] Recoverable error
[java] at xsl:attribute on line 206 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] Recoverable error
[java] at xsl:attribute on line 739 of
file:/c:/dcbk/lib/docbook-xsl-ns/epub/docbook.xsl:
[java]   Invalid attribute name: xmlns
[java] No more warnings will be displayed
[java] Writing OEBPS/content.opf
[java] Writing META-INF/container.xml
[java] <?xml version="1.0" encoding="UTF-8"?>

And the package files have improper DTD specifications.

Am I missing an XSLT parameter or is this a Saxon issue?

-----Original Message-----
From: Keith Fahlgren [mailto:abdelazer@gmail.com]
Sent: Thursday, March 26, 2009 10:55 AM
To: Eric Johnson
Cc: docbook-apps@lists.oasis-open.org
Subject: Re: [docbook-apps] Using ePub

Hi,

On Wed, Mar 25, 2009 at 4:03 PM, Eric Johnson <EMJOHNSO@progress.com>
wrote:
> I'm interested in generating ePub books from my DocBook 5.0 source and
was
> wondering what steps I need to take.
>
> I tried just running the XML through the ePub stylesheet and zipping
up the
> results which mostly works. The resulting book opens in Stanza for
iPhone,
> but not Stanza desktop. The desktop version generates a namespace
error. The
> book also fails the on-line ePub validator.
>
> Is there some customization I need to do? Do I need to also run the
Ruby
> stuff to package the book correctly?

You do need to use some other program to invoke the stylesheets. The
README in epub/README
(https://docbook.svn.sourceforge.net/svnroot/docbook/trunk/xsl/epub/READ
ME)
describes how to use the included Ruby command:

$ dbtoepub --help
  Usage: dbtoepub [OPTIONS] [DocBook Files]

  dbtoepub converts DocBook <book> and <article>s into to .epub files.

  .epub is defined by the IDPF at www.idpf.org and is made up of 3
standards:
  - Open Publication Structure (OPS)
  - Open Packaging Format (OPF)
  - Open Container Format (OCF)

  Specific options:
      -d, --debug                      Show debugging output.
      -h, --help                       Display usage info
      -v, --verbose                    Make output verbose

You may also be interested in other tools for invoking the
stylesheets, like Liza Daly's Python program docbook2epub:
http://code.google.com/p/epub-tools/


Keith



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