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asciidoctor / asciidoctor-epub3

:blue_book: Asciidoctor EPUB3 is a set of Asciidoctor extensions for converting AsciiDoc to EPUB3
https://asciidoctor.org
MIT License
216 stars 67 forks source link

No error output with -a ebook-validate #404

Open tombentley opened 3 years ago

tombentley commented 3 years ago

I'm running asciidoctor-epub3 in a container and while an epub output is created, if I try to validate it I'm told validation failed with no further diagnostics about what was wrong.

Command: asciidoctor-epub3 -D output -R src -a ebook-validate --verbose src/master-epub.adoc

Output: 

asciidoctor: DEBUG: Wrote EPUB3 to /build/output/master-epub.epub
asciidoctor: DEBUG: Using EPUBCheck from gem: /usr/lib/ruby/gems/2.7.0/gems/epubcheck-ruby-4.2.5.0/exe/epubcheck
asciidoctor: ERROR: EPUB validation failed: /build/output/master-epub.epub
slonopotamus commented 3 years ago

Most likely cause is that you don't have java on PATH.

tombentley commented 3 years ago

That was indeed the problem, thanks! It's not mentioned that java is a runtime dependency in the docs though: https://docs.asciidoctor.org/epub3-converter/latest/

slonopotamus commented 3 years ago

Reported upstream: https://github.com/takahashim/epubcheck-ruby/issues/18

slonopotamus commented 3 years ago

Docs don't even say that you should install epubcheck-ruby to get epubcheck :) I'll improve the docs and close this issue then.

tombentley commented 3 years ago

Great, thanks!