[FriBidi] Arabic shaping, testing needed
behdad at cs.toronto.edu
Wed Nov 2 18:41:23 PST 2005
It's still 2005. I have committed some final bits to the
fribidi2 module that finishes Arabic shaping support in the
What remains to do is to add a new remove_bidi_marks function
that goes with all the changes. I'm not still sure about the
API, thinking about it. And I'm finishing updating the
command-line tool to use this new API.
The codebase is backwards compatiable with 0.10 series of
releases of FriBidi. There are a bunch of deprecated functions
though, among them is the infamous fribidi_log2vis! Remember,
that function only worked for one-line paragraphs. I'm not still
sure whether I want to have a wrapper for one-line paragraphs.
Most probably not. In fact I'm not even sure whether to provide
wrapper functions for pre-line-breaking and post-line-breaking
stuff. The current API is pretty lowlevel, something like 6
calls may be needed. See fribidi_log2vis implementation in
fribidi2/lib/fribidi-deprecated.c for how things are supposed to
The deprecated log2vis function does Arabic shaping too now. So
without touching mplayer at all, I got it shape Arabic, just by
installing this FriBidi from CVS. It has the usual problem of
one-line paragraphs though. Here is a sample commandline to use
with mplayer to play subtitles in Arabic script:
mplayer -utf8 -fontconfig -font Roya
I would like to get some feedback before I make a release.
Things to test are:
- Confirm that your FriBidi-using applications keep running
correctly with this new FriBidi (that you build from CVS.)
- Skim thorough the API, see if it makes sense. The API is
- Any suggestions about what the version number should be?
Quick feedback is pretty much appreciated,
"Commandment Three says Do Not Kill, Amendment Two says Blood Will Spill"
-- Dan Bern, "New American Language"
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