AuroraMiddleware/harfbuzz
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Author SHA1 Message Date
Behdad Esfahbod
892eb78782 [Indic] Implement Uniscribe Reph+Matra+Halant bug feature 2012-05-11 16:54:40 +02:00
Behdad Esfahbod
67ea29af49 [Indic] Add example of different Uniscribe behavior 2012-05-11 16:51:23 +02:00
Behdad Esfahbod
ebe29733d4 [Indic] Add runtime Uniscribe bug compatibility mode! 
Enable by setting envvar:

  HB_OT_INDIC_OPTIONS=uniscribe-bug-compatible

Plus, LeftMatra+Halant "feature".
 2012-05-11 16:43:12 +02:00
Behdad Esfahbod
616e692e29 [Indic] Add #define UNISCRIBE_BUG_COMPATIBLE 1 2012-05-11 16:25:02 +02:00
Behdad Esfahbod
6782bdae3b [Indic] Fix Left Matra + Halant reordering 
As can be seen in: U+092B,U+093F,U+094D
 2012-05-11 16:23:43 +02:00
Behdad Esfahbod
3c2ea9481b Minor 2012-05-11 16:23:38 +02:00
Behdad Esfahbod
c071b99f15 [Indic] Add test for Left Matra with Halant 
Uniscribe doesn't move the Halant, we do.  And do a broken job of it now.
 2012-05-11 16:22:46 +02:00
Behdad Esfahbod
203d71069c [GSUB/GPOS] Check all glyph masks when matching input 2012-05-11 16:01:44 +02:00
Behdad Esfahbod
668c6046c1 [Indic] Apply Reph mask to all POS_REPH glyphs 
Needed for upcoming changes to GSUB/GPOS mask matching.
 2012-05-11 15:34:13 +02:00
Behdad Esfahbod
4be46bade2 [Indic] Fix state machine to backtrack 2012-05-11 14:39:01 +02:00
Behdad Esfahbod
cee7187447 [Indic] Move syllable tracking from Indic to generic layer 
This is to incorporate it into GSUB/GPOS processing.
 2012-05-11 11:41:39 +02:00
Behdad Esfahbod
3bf27a9f0e [Indic] Disable conjuncts when a ZWJ happens 
Not that the code makes any difference since the presence of ZWJ itself
causes the ligature to fail to match anyway.
 2012-05-11 11:17:23 +02:00
Behdad Esfahbod
c6d904d67d [Indic] Fix bitops typo! 
Another 1000 down!
 2012-05-11 11:07:40 +02:00
Behdad Esfahbod
55fe2cf79b Make APPLY debug output print current index and codepoint 
Yay!
 2012-05-11 03:56:33 +02:00
Behdad Esfahbod
7bd2b04fea Minor 2012-05-11 03:40:58 +02:00
Behdad Esfahbod
cf26510dbb Some more... 
Done.  I promise.
 2012-05-11 03:35:08 +02:00
Behdad Esfahbod
9659523ca3 More beauty in debug output! 2012-05-11 03:33:36 +02:00
Behdad Esfahbod
cf26e88a5a Finish off debug output beautification 2012-05-11 03:16:57 +02:00
Behdad Esfahbod
d7bba01a35 Only print class name in debug output if there's one available 2012-05-11 02:46:26 +02:00
Behdad Esfahbod
85f73fa8da Only printout class name in tracing, if one is available 
Makes debug output much more pleasant.
 2012-05-11 02:40:42 +02:00
Behdad Esfahbod
98619ce4fa Minor 2012-05-11 02:34:06 +02:00
Behdad Esfahbod
acea183e98 Add return annotation for APPLY 2012-05-11 02:33:11 +02:00
Behdad Esfahbod
5ccfe8e215 /Minor/ 2012-05-11 02:19:41 +02:00
Behdad Esfahbod
0ab8c86217 Annotate SANITIZE return values 
More to come, for APPLY, CLOSURE, etc.
 2012-05-11 02:11:52 +02:00
Behdad Esfahbod
829e814ff3 Minor 2012-05-11 00:52:16 +02:00
Behdad Esfahbod
6eec6f406d Code reshuffling 2012-05-11 00:50:38 +02:00
Behdad Esfahbod
1e08830b4f Beautify debug output 2012-05-11 00:43:57 +02:00
Behdad Esfahbod
6f45538017 More massaging trace messaging 2012-05-10 23:24:43 +02:00
Behdad Esfahbod
b5fa37cb69 Minor 2012-05-10 23:09:48 +02:00
Behdad Esfahbod
208109703c Better trace message support infrastructure 
We have varargs in the trace interface now.  To be used soon...
 2012-05-10 23:06:58 +02:00
Behdad Esfahbod
02b2922fbf [Indic] Towards better Reph positioning 
Fixed for Deva cases with two full-form consonants.  Failures **way** down.
Not much left to go :-).
 2012-05-10 21:44:50 +02:00
Behdad Esfahbod
74e54cf446 [Indic] Add Ra back for scripts without Reph 
We now check that the 'rphp' table exists before forming Reph, so
we don't need to comment out Ra for those scripts.
 2012-05-10 21:22:58 +02:00
Behdad Esfahbod
2b70df5cc0 [Indic] Add note re Uniscribe clusters 2012-05-10 18:38:22 +02:00
Behdad Esfahbod
21d2803133 [Indic] Do clustering like Uniscribe does 
Hindi Wikipedia failures down to 6639 (0.938381%)!
 2012-05-10 18:34:34 +02:00
Behdad Esfahbod
b20c9ebaf5 [Indic] Add test for matra group 
The spec says: "[{M}+[N]+[H]]", and that's what Uniscribe implements.
We instead do: "{M+[N]+[H]}", which means we allow Nukta and Halant
after all Matras, not just the last one.  It makes more sense.
 2012-05-10 18:31:17 +02:00
Behdad Esfahbod
8df5636968 [Indic] Reorder Reph to before the Halant after Matras 
Uniscribe doesn't do it, but we want to do as it gives the Reph the
opportunity to interact with the Matras.  Test with mangal for example.
Sequence: <0930,094d,0915,094b,094d>
In test suite already.
 2012-05-10 15:41:04 +02:00
Behdad Esfahbod
daf3234bdc [Indic] Don't clear the mask for Reph 
This was removing the mandatory global 1 bit in the mask and hence
disabling GPOS for Reph!
 2012-05-10 15:28:27 +02:00
Behdad Esfahbod
7708ee23cb [Indic] Improve Left Matra repositioning 
Move its dependents too.
 2012-05-10 14:48:25 +02:00
Behdad Esfahbod
61a58e26a5 [Indic] Add tricky reordering test cases 
In the case of Consonant,LeftMatra,Halant, Uniscribe leaves the Halant
where it is, but we want to move it with the Matra as that makes more
logical sense.
 2012-05-10 14:43:53 +02:00
Behdad Esfahbod
dbb105883c [Indic] Do Reph repositioning in final reordering like the spec says 
This introduced a failure, which we tracked down to a test case like this:

  U+092E,U+094B,U+094D,U+0930

The final character is a Ra that should be put in a syllable of it's
own.  And we do.  But it will interact with the Halant before it.  So
now we finally are convinced that we have to limit features to syllable
boundaries.  That's coming after lunch!
 2012-05-10 13:45:52 +02:00
Behdad Esfahbod
4705a70269 Minor 2012-05-10 13:09:08 +02:00
Behdad Esfahbod
4ac9e98d9d [Indic] Reorder left matras to be closer to base 2012-05-10 12:53:53 +02:00
Behdad Esfahbod
1a1fa8c655 [Indic] Treat the standalone cluster case reusing the consonant logic 2012-05-10 12:21:30 +02:00
Behdad Esfahbod
190eb31a16 [Indic] Minor 2012-05-10 12:21:30 +02:00
Behdad Esfahbod
c5306b6861 [Indic] Handle Vowel syllables 
Reusing the consonant logic!
 2012-05-10 12:21:30 +02:00
Behdad Esfahbod
6d8e0cb74c [Indic] Simplify Reph logic 2012-05-10 11:41:51 +02:00
Behdad Esfahbod
3d25079f8d [Indic] Don't form Reph is Ra is the only consonant in the syllable 2012-05-10 11:37:42 +02:00
Behdad Esfahbod
b99d63ae11 [Indic] Increase max syllable length 
20 was way too low, one could hit a syllable with 7ish consonants with it.
 2012-05-10 11:32:52 +02:00
Behdad Esfahbod
a391ff50b9 [Indic] Adjust base after sorting 2012-05-10 11:31:20 +02:00
Behdad Esfahbod
d3637edb24 [Indic] Don't return for long syllables. Just not sort. 2012-05-10 10:51:38 +02:00