Hey Lars, I think there is an error in the zip part of your Ant buildfile. Try to change "temp.mimetype" to "mimetype.zip".
<zip destfile="${output.dir}/mimetype.zip" ... <zipfileset src="${output.dir}/mimetype.zip" ... Best regards Nils 2014-02-17 16:32 GMT+01:00 Lars Vogel <lars.vo...@gmail.com>: > Hi, > > I'm generating epub from Docbook via Apache Ant and I'm getting the > following error during the validation with Epubcheck. > > [java] Epubcheck Version 3.0ERROR: > /home/vogella/workspace/docu/de.vogella.publishing/../output/epub/book.epub: > Extra field length for first filename must be 0, but was 20 > > Any suggestion what might be causing the error. > > I generate the epub via the following snippet (see below). > > Thanks for any help, Lars > > <target name="build-epub_eclipsercp" description="Generates EPUB files > from DocBook XML"> > <xslt style="${epub.stylesheet}" extension=".html" > basedir="${output.dir}/tmp2" destdir="${output.dir}/tmp"> > <include name="*80_Book_Eclipse_RCP*/*book.xml" /> > <param name="epub.stylesheet" expression="style.css" /> > <param name="html.stylesheet" expression="${stylesheet}" /> > <param name="section.autolabel" expression="1" /> > <param name="chapter.autolabel" expression="1" /> > <param name="show.comments" expression="0" /> > <param name="section.autolabel.max.depth" expression="1" /> > <param name="toc.section.depth" expression="1" /> > <param name="section.label.includes.component.label" expression="1" /> > <param name="make.valid.html" expression="1" /> > <param name="html.cleanup" expression="1" /> > <param name="chunker.output.encoding" expression="UTF-8" /> > <param name="ignore.image.scaling" expression="1" /> > <outputproperty name="indent" value="yes" /> > <classpath refid="saxon.class.path" /> > </xslt> > > <copy todir="${output.dir}/tmp/OEBPS"> > <fileset dir="OEBPS"> > </fileset> > </copy> > > <copy todir="${output.dir}/tmp/META-INF"> > <fileset dir="META-INF"> > </fileset> > </copy> > > <!-- Don't know how to avoid genereation of "${destfilename}.html" by > Saxon --> > <delete file="${output.dir}/tmp/book.html" /> > > <echo message="Generating book.epub" level="info" /> > > <!-- We create temporary zips so that minetype is the first one in the > final zip --> > <zip destfile="${output.dir}/temp.mimetype" basedir="${output.dir}/tmp" > compress="false" includes="mimetype" /> > <zip destfile="${output.dir}/temp.zip" basedir="${output.dir}/tmp/" > level="9" compress="true" excludes="mimetype" includes="OEBPS/** > META-INF/**" /> > <zip destfile="${output.dir}/book.epub" update="true" > keepcompression="true" encoding="UTF-8" excludes="*.html"> > <zipfileset src="${output.dir}/temp.mimetype" /> > <zipfileset src="${output.dir}/temp.zip" /> > </zip> > > <!-- Have to delete these directories would be nicer to place then in tmp > output dir > <delete dir="./OEBPS" /> > <delete dir="./META-INF" /> > --> > > <!-- Make sure the epubcheck lib has a subfolder lib with saxon.jar and > jing.jar in it > --> > <epub.check epub="book" /> > > </target> > >