Objavi is a publishing engine primarly intender for exporting Booktype books to PDF, EPUB or ODF for distribution or printing. The name comes from the Croatian word "objavi!" meaning "publish!".
The development of Objavi was supported by Internews. It was extended to produce EPUB documents with support from the Internet Archive.
Currently Objavi is part of the Booktype project which is being developed by the Sourcefabric organization (www.sourcefabric.org).
See the INSTALL.txt file for installation instructions.
Objavi is part of the Booktype project, so they shared support and development forums.
Development forum http://forum.sourcefabric.org/categories/booktype-development
Bug tracker http://dev.sourcefabric.org/browse/OB
The objavi process
Objavi starts with a "booki-zip", as defined in the file "doc/booki-zip-standard.txt". This might be sourced from a Booktype instance, or from TWiki via the booki-twiki-gateway script, or perhaps form an EPUB imported via Espri.
If a PDF is required, the HTML is concatenated, various extra bits are inserted, and the wkhtmltopdf program rederes it using WebKit. At this point the PDF has no page numbers, no gutters, no table of contents, and is using a too big paper size. In order to write a table of contents, an outline of the PDF is extracted and laid out as html. The table of contents thus generated is combined with other preliminary pages and another PDF is created. If a book PDF is required, Pdfedit is used to crop the pages down to size and to shift them alternately left and right, creating a gutter for the spine of the book. Then pdfedit is used again to add page numbers to both PDFs, with lowercase roman numbers being used for the preliminary pages. Finally the two PDFs are combined using pdftk and, optionally, spun 180 degrees so they appear upside down. If a right-to-left book is printed like this on a left-to-right printer, the binding will be on the correct side. Pdfedit and wkhtmltopdf both require an X server to run, for which Xvfb is used. For newspaper format, the page size is set to the column width, and pdfnup is used to arrange the columns on another page. OpenOffice output
ODF output was introduced with Objavi 2.1. This uses an Open Office instance controlled by pyuno.
The html in the booki-zip is manipulated into xhtml using lxml, and the structural information and metadata is converted into EPUB form.