88e9a9bcae
Minor reshaping of hb_font_funcs_t implementation
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In anticipation of further changes. No functional changes.
2015-11-04 21:16:26 -08:00
a6a7715bac
Comments
2015-11-04 20:51:21 -08:00
6c48ec830f
[ot] Remove font funcs that do nothing
2015-11-04 20:47:42 -08:00
75ea2daa1d
[ot] Port ot font funcs to allocated object
2015-11-04 20:43:59 -08:00
44f8275080
[ft] Remove font funcs that do nothing
2015-11-04 20:43:43 -08:00
7918c261ef
[ft] Port ft font funcs to allocated object
2015-11-04 20:37:49 -08:00
da29b43794
Separate nil font-funcs from parent-peeking font-funcs
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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
bee901b38e
Optimize positioning direction calculations
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It makes the binary smaller AND faster. Yumm!
2015-11-04 19:28:17 -08:00
e3e4bb011a
Don't do fractions if buffer is ASCII-only
2015-11-04 18:58:02 -08:00
6986208ba3
Optimize runs without Default_Ignorable's
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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
14c2de3218
Limit max edits during sanitize to 8
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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
9cbc39aef9
Minor
2015-11-04 18:00:53 -08:00
52e6c4e158
If font doesn't support U+2011, fall back to U+2010
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Test passes now.
2015-11-04 17:45:56 -08:00
75483aafa6
Untangle if/else waterfall
2015-11-04 17:43:36 -08:00
49ef630936
Adjust the width of various spaces if font does not cover them
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See discussion here:
81ef4f407dhttps://github.com/behdad/harfbuzz/issues/153
2015-11-04 17:27:07 -08:00
aa7044de0c
Generalize flags types
2015-11-04 16:25:57 -08:00
7793aad946
Normalize various spaces to space if font doesn't support
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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
8565839480
Protect against possible invalid-memory access after OOM
2015-11-04 14:46:52 -08:00
4cc80bed25
Fix typo!
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Ouch! Fortunately that function was unused.
2015-11-04 14:46:10 -08:00
9ac4b9656d
Add Unicode space category
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Unused so far.
2015-11-04 14:19:25 -08:00
8249ec3f86
Make top-byte of unicode_props available to be used differently per-GC
2015-11-04 13:26:17 -08:00
cc5d3a3388
Towards using top-byte of unicode-props for more things
2015-11-04 13:22:33 -08:00
2f38dde5a1
Add _hb_glyph_info_is_unicode_mark()
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Unused right now.
2015-11-04 13:17:33 -08:00
90d75f93bb
Tighten ccc-setting a bit and document it
2015-11-03 12:58:12 -08:00
df698f3299
[ot-font] Fix hmtx table length checking, *again*
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Exactly the same problem that I fixed in
63ef0b41dc67f8821fb2https://github.com/behdad/harfbuzz/issues/139#issuecomment-153449473
Fixes https://github.com/behdad/harfbuzz/issues/156
2015-11-03 12:15:12 -08:00
ed2024ef93
[perf] Micro-optimize
2015-11-02 18:03:38 -08:00
76a5310a83
Remove irrelevant comment
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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
8259669fbd
Minor
2015-11-02 17:44:05 -08:00
9382c471ea
Combine unicode_props0/1 into a uint16
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Slightly faster. In prep for more changes.
2015-11-02 17:36:51 -08:00
7127718545
[perf] Only call combining_class() for marks
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Saves some time. Also preparing for reusing the ccc byte for other stuff.
2015-11-02 17:27:48 -08:00
5ba450407b
Make max context-length and max nesting level configurable
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...at compile time.
2015-11-02 15:43:39 -08:00
67f8821fb2
[ot] Make bad-hmtx handling match FreeType
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Also route fuzzing-related tests through hb-ot-font, to reduce dependency
on FreeType behavior for badly-broken fonts. Fixes failing test with
FreeType master.
2015-11-02 15:37:29 -08:00
672ca3b4e6
Use templates for making sure expression is constant
2015-10-26 14:05:05 -07:00
5c8174eda3
Update comments for removal of compat decompositions
2015-10-21 18:51:40 -02:00
f679970040
Disable compatibility decomposition usage during normalization
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Fixes https://github.com/behdad/harfbuzz/issues/152
2015-10-21 17:20:55 -02:00
ce889189c1
Fix two more -Wshadow warnings
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https://bugzilla.mozilla.org/show_bug.cgi?id=1215894
2015-10-21 11:23:12 -02:00
4a6b1eedbb
Fix one more -Wshadow warning
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https://bugzilla.mozilla.org/show_bug.cgi?id=1215894
2015-10-21 11:20:55 -02:00
6f932bc8f9
Fix a few more -Wshadow-local warnings
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https://bugzilla.mozilla.org/show_bug.cgi?id=1215894
2015-10-21 11:16:49 -02:00
b90cb366d7
Fix one -Wshadow-compatible-local warning
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From https://bugzilla.mozilla.org/show_bug.cgi?id=1215894
2015-10-21 11:13:21 -02:00
50e5750bd8
Avoid unnecessary cast to 64-bit
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Fixes https://github.com/behdad/harfbuzz/issues/146
Or I think it should.
2015-10-21 11:10:40 -02:00
305d2fbf5a
Add HB_FALLTHROUGH
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Borrowed from https://bugzilla.mozilla.org/show_bug.cgi?id=1215411
2015-10-21 11:04:28 -02:00
ca97ea7aa2
[ft] Revert change-of-behavior of hb_ft_font_create() introduced in 1.0.5
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The default FreeType load flags where changed from FT_LOAD_NO_HINTING
to FT_LOAD_DEFAULT in 2a9627c564https://github.com/behdad/harfbuzz/issues/143
2015-10-15 20:20:22 -03:00
63ef0b41dc
[ot-font] Fix hmtx wrong table length check
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Discovered by libFuzzer. Ouch!
https://github.com/behdad/harfbuzz/issues/139#issuecomment-148289957
2015-10-15 12:54:28 -03:00
613e630617
Reduce max nesting level from 8 to 6
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We probably should implement better system to catch cyclic lookups.
But for now, this speeds up worst case behavior with broken fonts
considerably without compromising legitimate usecases.
https://github.com/behdad/harfbuzz/issues/139#issuecomment-147788447
2015-10-13 23:33:28 -03:00
ed13e2ce50
[ot-font] Fix leak
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https://github.com/behdad/harfbuzz/issues/139#issuecomment-147616887
2015-10-13 10:32:56 -03:00
f966649747
Fix another memory access issue discovered by libFuzzer
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Fixes https://github.com/behdad/harfbuzz/issues/139#issuecomment-146984679
2015-10-13 00:30:50 -04:00
cc6ea308d4
Extern "C" custom-allocator declerations
2015-10-12 17:21:52 -04:00
50f489a0a0
Typo
2015-10-11 20:59:29 -04:00
ee9b0b6cb5
Fix another sanitize bug
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Also discovered by "libFuzzer".
2015-10-09 14:23:15 -04:00
f396fbb000
Fix return value of sanitize when subformat is not readable
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This is a fix on top of the previous issue fixed in
c917965b9e
2015-10-09 12:25:55 -04:00
Behdad Esfahbod