AuroraMiddleware/harfbuzz
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Author SHA1 Message Date
Behdad Esfahbod
9c9ad214af [fuzzer] Add README 
https://github.com/behdad/harfbuzz/issues/139#issuecomment-154202645
 2015-11-05 22:50:52 -08:00
Behdad Esfahbod
6e6f82b6f3 Implement SYRIAC ABBREVIATION MARK with 'stch' feature 
The feature is enabled for any character in the Arabic shaper.
We should experiment with using it for Arabic subtending marks.
Though, that has a directionality problem as well, since those
are used with digits...

Fixes https://github.com/behdad/harfbuzz/issues/141
 2015-11-05 17:46:34 -08:00
Behdad Esfahbod
c743ec5886 [ft] Fix extents with negative scales 
Fixes https://github.com/behdad/harfbuzz/issues/162
 2015-11-05 17:38:27 -08:00
Behdad Esfahbod
73fec3992a Reserve a few scratch-flags bits for complex shapers 2015-11-05 15:22:18 -08:00
Behdad Esfahbod
136863371c Add new shaper method postprocess_glyphs() 
Unused currently.  To be used for Syriac stretch implementation.

https://github.com/behdad/harfbuzz/issues/141
 2015-11-05 13:24:15 -08:00
Behdad Esfahbod
6c0ebd02c9 [util] If font has color, generate PNG with color 2015-11-05 11:37:48 -08:00
Behdad Esfahbod
e95eb23a4e Don't try zeroing marks by GDEF if there are no non-ASCII 
This one is a hack, but should be ok.
 2015-11-04 22:59:28 -08:00
Behdad Esfahbod
7fa54ed75a Don't try zeroing mark attachments by Unicode if there's no non-ASCII 2015-11-04 22:59:24 -08:00
Behdad Esfahbod
550bd14d2b Actually commit changes for previous commit 2015-11-04 22:58:58 -08:00
Behdad Esfahbod
ff31b3c1b8 Skip GPOS cursive / attachment adjustmnent if none happened 
I'm starting to really like how free these new scratch_flags are.
 2015-11-04 22:47:30 -08:00
Behdad Esfahbod
0f407325f6 Minor 2015-11-04 22:28:44 -08:00
Behdad Esfahbod
497a6c2071 Skip forming clusters if text is all ASCII 2015-11-04 22:24:19 -08:00
Behdad Esfahbod
28de104f15 Move variable-sized struct member to end 
Hopefully makes clang build happy
 2015-11-04 22:03:09 -08:00
Behdad Esfahbod
5bc28b5f68 Optimize positioning for when h_origin is nil 2015-11-04 21:53:16 -08:00
Behdad Esfahbod
762770c964 Add font->has_...() to check for individual nil font funcs 
Hopefully this wouldn't break any compiler.  There was some magic
moments to getting this to compile...
 2015-11-04 21:49:19 -08:00
Behdad Esfahbod
88e9a9bcae Minor reshaping of hb_font_funcs_t implementation 
In anticipation of further changes.  No functional changes.
 2015-11-04 21:16:26 -08:00
Behdad Esfahbod
a6a7715bac Comments 2015-11-04 20:51:21 -08:00
Behdad Esfahbod
6c48ec830f [ot] Remove font funcs that do nothing 2015-11-04 20:47:42 -08:00
Behdad Esfahbod
75ea2daa1d [ot] Port ot font funcs to allocated object 2015-11-04 20:43:59 -08:00
Behdad Esfahbod
44f8275080 [ft] Remove font funcs that do nothing 2015-11-04 20:43:43 -08:00
Behdad Esfahbod
7918c261ef [ft] Port ft font funcs to allocated object 2015-11-04 20:37:49 -08:00
Behdad Esfahbod
da29b43794 Separate nil font-funcs from parent-peeking font-funcs 
API change: all fonts created with hb_font_create() now inherit from
(ie have parent) hb_font_get_empty().
 2015-11-04 20:22:44 -08:00
Behdad Esfahbod
bee901b38e Optimize positioning direction calculations 
It makes the binary smaller AND faster.  Yumm!
 2015-11-04 19:28:17 -08:00
Behdad Esfahbod
e3e4bb011a Don't do fractions if buffer is ASCII-only 2015-11-04 18:58:02 -08:00
Behdad Esfahbod
6986208ba3 Optimize runs without Default_Ignorable's 
Now that we have a buffer-wide scratch flags facility, use it to
optimize away a few passes.
 2015-11-04 18:46:41 -08:00
Behdad Esfahbod
14c2de3218 Limit max edits during sanitize to 8 
Used to be 100.  If a tabe needs more than one or two edits, it's
probably completely bogus...

Might help with speeding up fuzzing for
https://github.com/behdad/harfbuzz/issues/157
 2015-11-04 18:00:57 -08:00
Behdad Esfahbod
9cbc39aef9 Minor 2015-11-04 18:00:53 -08:00
Behdad Esfahbod
52e6c4e158 If font doesn't support U+2011, fall back to U+2010 
Test passes now.
 2015-11-04 17:45:56 -08:00
Behdad Esfahbod
75483aafa6 Untangle if/else waterfall 2015-11-04 17:43:36 -08:00
Behdad Esfahbod
04fd8517f8 Add tests for hyphen fallback 
U+2011 is <noBreak> equivaent of U+2010, so we should do the fallback
for it.  Currently fails.
 2015-11-04 17:39:26 -08:00
Behdad Esfahbod
550417117d [test] Drop hintings when subsetting fonts to record 2015-11-04 17:37:30 -08:00
Behdad Esfahbod
49ef630936 Adjust the width of various spaces if font does not cover them 
See discussion here:
81ef4f407d

There's no way to disable this fallback, but I don't think it would
be needed.  Let's hope for the best!

Fixes https://github.com/behdad/harfbuzz/issues/153
 2015-11-04 17:27:07 -08:00
Behdad Esfahbod
aa7044de0c Generalize flags types 2015-11-04 16:25:57 -08:00
Behdad Esfahbod
7793aad946 Normalize various spaces to space if font doesn't support 
This resurrects the space fallback feature, after I disabled
the compatibility decomposition.  Now I can release HarfBuzz
again without breaking Pango!

It also remembers which space character it was, such that later
on we can approximate the width of this particular space
character.  That part is not implemented yet.

We normalize all GC=Zs chars except for U+1680 OGHA SPACE MARK,
which is better left alone.
 2015-11-04 15:51:41 -08:00
Behdad Esfahbod
8b3c7f9ede [test] Support recording multiple lines of text in record-test.sh 2015-11-04 15:48:51 -08:00
Behdad Esfahbod
8565839480 Protect against possible invalid-memory access after OOM 2015-11-04 14:46:52 -08:00
Behdad Esfahbod
4cc80bed25 Fix typo! 
Ouch!  Fortunately that function was unused.
 2015-11-04 14:46:10 -08:00
Behdad Esfahbod
9ac4b9656d Add Unicode space category 
Unused so far.
 2015-11-04 14:19:25 -08:00
Behdad Esfahbod
8249ec3f86 Make top-byte of unicode_props available to be used differently per-GC 2015-11-04 13:26:17 -08:00
Behdad Esfahbod
cc5d3a3388 Towards using top-byte of unicode-props for more things 2015-11-04 13:22:33 -08:00
Behdad Esfahbod
2f38dde5a1 Add _hb_glyph_info_is_unicode_mark() 
Unused right now.
 2015-11-04 13:17:33 -08:00
Behdad Esfahbod
90d75f93bb Tighten ccc-setting a bit and document it 2015-11-03 12:58:12 -08:00
Behdad Esfahbod
2f0dfd43cd Fix test expectation 2015-11-03 12:28:34 -08:00
Behdad Esfahbod
df698f3299 [ot-font] Fix hmtx table length checking, *again* 
Exactly the same problem that I fixed in
63ef0b41dc

I rewrote the table checking yesterday in
67f8821fb2
and introduced the exact same issue again. :(
Good thing we have ongoing fuzzing going now.  Was discovered
immediately by libFuzzer.  Thanks kcc!

https://github.com/behdad/harfbuzz/issues/139#issuecomment-153449473
Fixes https://github.com/behdad/harfbuzz/issues/156
 2015-11-03 12:15:12 -08:00
Behdad Esfahbod
3530cc2d7c [util] Fix option-parsing leaks 2015-11-03 12:13:28 -08:00
Behdad Esfahbod
642135f3b2 [util] In --debug mode, duplicate font data 
This has the effect that the font data will end up in a memory
section malloc()ed exactly to its size.  This gives us better
valgrind detection of out-of-bounds access.

Previously, the font data was placed in a mmap()ed section or
GString-allocated area, which didn't have proper protections
at the end when running under valgrind.
 2015-11-03 11:26:34 -08:00
Behdad Esfahbod
ed2024ef93 [perf] Micro-optimize 2015-11-02 18:03:38 -08:00
Behdad Esfahbod
76a5310a83 Remove irrelevant comment 
I tried moving the is_default_ignorable() function to an INTERNAL
function.  That made the binary size grow by 5k AND things got a
tad bit slower!
 2015-11-02 17:52:45 -08:00
Behdad Esfahbod
8259669fbd Minor 2015-11-02 17:44:05 -08:00
Behdad Esfahbod
9382c471ea Combine unicode_props0/1 into a uint16 
Slightly faster.  In prep for more changes.
 2015-11-02 17:36:51 -08:00