EPUB plugin
From AbiWiki
Contents |
Overview
EPUB is an open standard for electronic publications. It declares set of features that reading system must implement to render all documents and describes structure and contents of electronic publication.
EPUB 2.0.1
Current version of EPUB standard is 2.0.1 (work in progress on EPUB3). It consist of three specifications:
- Open publication structure (OPS)
- Open packaging format (OPF)
- Open container format (OCF)
You can find more details at the official EPUB website(http://idpf.org/epub/201). In brief, OPS defines in what way the content of publication is stored(HTML/XHTML and CSS) and what file types reading system should always support(so called "Core media types"); OPF defines what files are obligatory and describes their contents.
EPUB 3
EPUB 3 standard is the newest version of EPUB specification and currently is in the state of IDPF Proposed Specification. This new generation standard for electronic publications supports such things as media content(called Media Overlays), embedding MathML into documents, using JavaScript and HTML5 to create really nice-looking electronic publications. And Abiword is one of the first software that allow creating such documents (of course, they won`t contain media overlays, but who knows, maybe in the nearest future abiword will allow users to embed video and audio in the documents).
Using HTML exporter to create another plugin on top of it
In this section I`ll describe how it`s possible to create custom plugin based on HTML exporter without no changes to HTML exporter itself. To describe the process I`ll use references to existing code - EPUB2 export code.
