On Sun, 31 Jan 2021 at 10:24, Stephan Witt <st.w...@gmx.net> wrote: > Am 30.01.2021 um 04:56 schrieb Thibaut Cuvelier <tcuvel...@lyx.org>: > > > > On Sat, 30 Jan 2021 at 01:30, Stephan Witt <st.w...@gmx.net> wrote: > > Am 29.01.2021 um 18:38 schrieb Thibaut Cuvelier <tcuvel...@lyx.org>: > > > > > > Dear list, > > > > > > As promised, I started working on ePub output, building upon the new > DocBook output. > > > > > > Here is a script that performs the complete process of taking a > DocBook file and generating the ePub. It has several dependencies: > > > > > > - an XSLT processor: > > > • not xsltproc (http://xmlsoft.org/xslt/xsltproc2.html): > available for most Linux distributions, I guess it is available by default > on macOS, must be bundled for Windows. I tried several versions for > Windows, but an old bug that should have been fixed in 1.1.24 (roughly > 2010) is still there: > > > • I/O error : No such file or directory > > > • xsltDocumentElem: unable to save to > C:/Users/Thibaut/AppData/Local/Temp/tmp6c2i6a7h/OEBPS/package.opf > > > • Saxon 6 (available for most Linux distributions, must be > bundled for Windows and macOS, requires Java). It's outdated software > (circa 2005), but newer versions are not 100% backward compatible, so it is > still very widely used. Other DocBook stylesheets would work on newer > Saxon, but they are not as reliable as the old ones (like > https://github.com/docbook/xslTNG). > > > • not MSXML6 (Windows-only, mostly built-it, but not compatible > with the DocBook stylesheets — it wrongly errors with chunking) or .Net > XSLT engine (nxslt/nxslt2). > > > - the official DocBook XSLT stylesheets. Three parts are required: > XHTML, XHTML5, and ePub. For now, I copied the needed parts in a patch. On > some Linux distributions, this could be replaced by a version installed by > the package manager (Ubuntu 20.04 has a near-up-to-date version, although > the latest one has been released in 2016: > https://github.com/docbook/xslt10-stylesheets/releases/tag/release%2F1.79.2; > Fedora is up-to-date). > > > > > > The integration into LyX should be complete, minus testing on Linux > and others and packaging issues: the dependencies must be included for > Windows and macOS, not for all Linux distros. > > > > On macOS 10.14 (Mojave) I have: > > > > $ xsltproc -V > > Using libxml 20904, libxslt 10129 and libexslt 817 > > xsltproc was compiled against libxml 20904, libxslt 10129 and libexslt > 817 > > libxslt 10129 was compiled against libxml 20904 > > libexslt 817 was compiled against libxml 20904 > > > > Why not? > > > > I was not able to make xsltproc work on Windows with these stylesheets, > it gave many errors when creating new files. What if you try with the > following docbook2epub.py script (it goes in lib/scripts)? > > I’ve applied all (?) your patches and used the LyX made of it to export to > ePub: > > support/Systemcall.cpp (291): Systemcall: 'python scripts/docbook2epub.py > "java" "Intro.xml" "Intro.epub"' finished with exit code 2 > Error: Die Datei kann nicht konvertiert werden > ---------------------------------------- > Bei der Ausführung von > python $$s/scripts/docbook2epub.py "java" "Intro.xml" "Intro.epub" > ist ein Fehler aufgetreten > > Can you please be more precise what to try? Ideally I can run some > commands in terminal to diagnose the ePub export tool chain. > I don’t like to run them from LyX at first. >
If you want to try it outside LyX, first export the document as DocBook 5 (say, doc.xml); if Java is available in the PATH, run (with either Python 2 or 3, although it's only really tested with 3.8): python scripts/docbook2epub.py "java" "doc.xml" "doc.epub" Otherwise, you should have many more details by having a look at the console, if one is attached to the LyX process. Mostly, there are two sources of error: either the transformation into HTML or the ZIP-archive creation. Basically, the script is just running the following three commands: mkdir …/tmpfolder java -jar …/saxon6.5.5.jar …/doc.xml …/docbook/epub3/chunk.xsl base.dir=…/tmpfolder zip …/doc.epub …/tmpfolder/*
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