1 Objavi2: another FLOSS Manuals publishing system
2 ================================================
7 FLOSS Manuals books are written and stored as HTML, but are usually
8 converted to PDF, epub, or ODF for distribution or printing. Programs
9 which perform this task are called objavi (pronounced "ob-Yah-vee"),
10 after the Croatian word "objavi!" meaning "publish!".
12 The previous objavi, Objavi beta, could produce very good PDF
13 documents using Latin text, but did not cope well with other scripts,
14 and could not produce other output. Objavi 2 was originally written
15 just to provide fully internationalised PDFs, but it has since been
16 adapted to produce other formats.
18 Objavi 2 is free software, distributed under the version 2 or greater
19 of the GNU General Public License. The source can be viewed at
21 http://booki-dev.flossmanuals.net/git?p=objavi2.git
22 (or, alternatively, http://repo.or.cz/w/objavi2.git)
24 which also contains instructions for cloning the git repository. If
25 you want a source tarball without worrying about git, try this link:
27 http://repo.or.cz/w/objavi2.git?a=snapshot;h=HEAD;sf=tgz
29 It is primarily written in Python, with a substantial amount of
30 QSAScript (an ECMAscript variant) and some Javascript, HTML, and CSS.
32 The development of Objavi2 was supported by Internews. It was
33 extended to produce epub documents with support from the Internet
40 Objavi2 starts with a "booki-zip", as defined in the file
41 "booki-zip-standard/txt". This might be sourced from a Booki
42 instance, or from Twiki via the booki-twiki-gateway script, or perhaps
43 form an epub imported via Espri.
47 If a PDF is required, the HTML is concatenated, various extra bits are
48 inserted, and the wkhtmltopdf program rederes it using WebKit.
50 At this point the PDF has no page numbers, no gutters, no table of
51 contents, and is using a too big paper size. In order to write a
52 table of contents, an outline of the PDF is extracted and laid out as
53 html. The table of contents thus generated is combined with other
54 preliminary pages and another PDF is created.
56 If a book PDF is required, Pdfedit is used to crop the pages down to
57 size and to shift them alternately left and right, creating a gutter
58 for the spine of the book. Then pdfedit is used again to add page
59 numbers to both PDFs, with lowercase roman numbers being used for the
62 Finally the two PDFs are combined using pdftk and, optionally, spun
63 180 degrees so they appear upside down. If a right-to-left book is
64 printed like this on a left-to-right printer, the binding will be on
67 Pdfedit and wkhtmltopdf both require an X server to run, for which
70 For newspaper format, the page size is set to the column width, and
71 pdfnup is used to arrange the columns on another page.
75 ODF output was introduced with Objavi 2.1. This uses an Open Office
76 instance controlled by pyuno.
80 The html in the booki-zip is manipulated into xhtml using lxml, and
81 the structural information and metadata is converted into epub form.
87 See http://booki-dev.flossmanuals.net/report
92 See the INSTALL file. Apologies for its inadequacy.