a02c3ee70f
Add or update tables specifications links
2018-04-12 13:44:32 +04:30
7a70c20fec
[BASE] Clean up first 29%
2018-02-27 12:46:16 -08:00
71130a20fa
Replace Supplier.advance with Supplier::operator+=
2018-02-10 13:15:57 -06:00
fd03449094
Rename hb_apply_context_t to hb_ot_apply_context_t
2018-01-19 16:40:13 -08:00
949f6af289
Disallow sanitize recursing into Extension subtables multiple times
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Fixes https://oss-fuzz.com/v2/testcase-detail/5216838347653120
which is a stack overflow, not by way of infinite recursion, just
being deep. That's disallowed anyway, so catch it as it happens,
not afterwards.
2018-01-15 20:44:10 -05:00
6b19178ee3
Prefix int types with HB
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Such a headache that Windows defines UINT8, ...; Just prefix it.
2018-01-10 03:07:30 +01:00
81f27df4d9
More work towards improving collect_glyphs() against bad input
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The three "XXXXX"'s should be switched to false. Doing that separately for ease
of bisecting...
2017-12-16 06:12:06 -08:00
16fba5b215
[ot] Fix Extension type recurse to disallow recursing to another Extension
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Particularly hazardous if the second layer mixes forward and backward lookups.
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4336
2017-11-29 16:08:11 -08:00
7c6937e7c7
Move all references of old url to the new address ( #622 )
2017-11-20 14:49:22 -05:00
6f335ed1e5
Replace USHORT/SHORT/ULONG/etc with UINT16/INT16/UINT32/etc
2017-11-14 21:06:07 -08:00
dbdbfe3d7b
Use nullptr instead of NULL
2017-10-15 12:11:08 +02:00
40bd7e9a1c
[unsafe-to-break] Add UNSAFE_TO_BREAK flag
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Not all shapers code is updated to set this properly.
GSUB and Arabic shaper are updated.
GPOS and other shapers are NOT.
Fixes https://github.com/behdad/harfbuzz/issues/224
2017-08-10 15:02:28 -07:00
1a0f4aa6df
Revert "Synthesize GDEF glyph class for any glyph that does not have one in GDEF"
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This reverts commit 69f9fbc420https://github.com/behdad/harfbuzz/issues/347#issuecomment-268873401
Fixes https://github.com/behdad/harfbuzz/issues/347
2016-12-22 14:43:14 -06:00
7ed71eb347
Protect collect_glyphs() and closure() against malicious DDOS fonts
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Fixes https://github.com/behdad/harfbuzz/issues/363
2016-12-20 15:01:16 -06:00
59055b5494
[GX] Implement Feature Variations
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Not hooked up to shaper yet.
2016-12-16 19:06:26 -06:00
359dead960
Allow MultipleSubst to delete glyph
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Fixes https://github.com/behdad/harfbuzz/issues/253
Hopefully we got the logic right.
2016-05-06 16:19:19 +01:00
69f9fbc420
Synthesize GDEF glyph class for any glyph that does not have one in GDEF
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Previously we only synthesized GDEF glyph classes if the glyphClassDef
array in GDEF was null. This worked well enough, and is indeed what
OpenType requires: "If the font does not include a GlyphClassDef table,
the client must define and maintain this information when using the
GSUB and GPOS tables." That sentence does not quite make sense since
one needs Unicode properties as well, but is close enough.
However, looks like Arial Unicode as shipped on WinXP, does have GDEF
glyph class array, but defines no classes for Hebrew. This results
in Hebrew marks not getting their widths zeroed. So, with this change,
we synthesize glyph class for any glyph that is not specified in the
GDEF glyph class table. Since, from our point of view, a glyph not
being listed in that table is a font bug, any unwanted consequence of
this change is a font bug :).
Note that we still don't get the same rendering as Uniscribe, since
Uniscribe seems to do fallback positioning as well, even though the
font does have a GPOS table (which does NOT cover Hebrew!). We are
not going to try to match that though.
Test string for Arial Unicode:
U+05E9,U+05B8,U+05C1,U+05DC
Before: [gid1166=3+991|gid1142=0+737|gid5798=0+1434]
After: [gid1166=3+991|gid1142=0+0|gid5798=0+1434]
Uniscribe: [gid1166=3+991|gid1142=0@348,0+0|gid5798=0+1434]
Note that our new output matches what we were generating until July
2014, because the Hebrew shaper used to zero mark advances based on
Unicode, NOT GDEF. That's 9e834e29e0
2016-03-17 11:59:43 -07:00
7d8d58ac81
[GPOS] Divide position_finish() into two phases, for advances and offsets
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Right now the position_finish_advances() is empty. To be used for
spacing attachments proposal later.
2016-02-11 16:34:28 +07:00
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
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
b47159011c
Define return_trace()
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Not functional change (expected!).
2015-09-29 14:57:02 +01:00
c917965b9e
Add missing returns
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Fixes possible invalid read of two bytes.
Reported by Behzad Najjarpour Jabbari, Secunia Research.
2015-09-29 14:45:35 +01:00
2c8b3b2e53
[debug] Print lookup index in debug-apply output
2015-08-18 14:36:43 +01:00
fc3c59a1d7
Fix unused var warnings
2015-04-08 13:04:29 -07:00
bd047d3b7f
[layout] Minor
2015-02-25 15:43:31 -08:00
1a2322134a
[layout] Don't check glyph props against lookup flags when recursing
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Shouldn't be needed. I have a hard time imagining this breaking any
legitimate use case.
2015-02-25 15:43:30 -08:00
095a1257cc
[layout] Port sanitize() to use dispatch()
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Needed some rework of Extension table. Hopefully I got it right, and
the new template usage doesn't break any compilers...
2015-02-25 15:43:30 -08:00
40c58923cb
[layout] Refactor Lookup::dispatch()
2015-02-25 15:43:30 -08:00
70366f5d19
[layout] Refactor get_subtable()
2015-02-25 15:43:29 -08:00
8e36ccfd4f
[layout] Use dispatch() for add_coverage()
2015-02-25 15:43:29 -08:00
50b8dc79da
[layout] Add may_dispatch()
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No functional change right now.
2015-02-25 15:43:29 -08:00
de2118ed7a
Make sanitize() a const method
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This makes a lot of code safer. We only try modifying the object in one
place, after making sure it's safe to do so. So, do a const_cast<> in
that one place...
2015-02-25 15:43:28 -08:00
6759ed95a3
Minor
2015-02-25 15:43:28 -08:00
6b599dac1f
Remove unnecessary check in sanitize
2015-02-25 15:43:28 -08:00
7788993bc1
[layout] Use setter method to set c->lookup_props
2015-02-25 15:43:25 -08:00
241eac9559
Hide internals of lookup accelerators
2015-02-25 15:43:25 -08:00
00f6a8e334
[ot] Print format in dispatch trace
2014-12-12 20:36:49 -08:00
5c87120b81
Fix misc warnings
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Fixes https://github.com/behdad/harfbuzz/pull/51
2014-10-14 20:07:31 -07:00
8f3eebf7ee
Make sure gsubgpos buffer vars are available during fallback_position
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Add buffer var allocation asserts to a few key places.
2014-08-02 19:07:49 -04:00
7627100f42
Mark unsigned integer literals with the u suffix
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Simplifies hb_in_range() calls as the type can be inferred.
The rest is obsessiveness, I admit.
2014-07-11 16:22:13 -04:00
832a6f99b3
[indic] Don't reorder reph/pref if ligature was expanded
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Normally if you want to, say, conditionally prevent a 'pref', you
would use blocking contextual matching. Some designers instead
form the 'pref' form, then undo it in context. To detect that
we now also remember glyphs that went through MultipleSubst.
In the only place that this is used, Uniscribe seems to only care
about the "last" transformation between Ligature and Multiple
substitions. Ie. if you ligate, expand, and ligate again, it
moves the pref, but if you ligate and expand it doesn't. That's
why we clear the MULTIPLIED bit when setting LIGATED.
Micro-test added. Test: U+0D2F,0D4D,0D30 with font from:
[1]
https://code.google.com/a/google.com/p/noto-alpha/issues/detail?id=186#c29
2014-06-05 20:36:01 -04:00
b5be231720
[gsub] Adjust single-length ligature subst to act like single subst
2014-06-05 19:00:22 -04:00
aae69451df
[gsub] Minor shuffling
2014-06-05 19:00:08 -04:00
b6b304f12b
[ot] Add TODO re zero-len MultipleSubst sequences
2014-06-05 17:12:54 -04:00
6faff8e413
Add static storage classifier to inline functions
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Before we were just relying on the compiler inlining them and not
leaving a trace in our public API. Try to fix. Hopefully not
breaking anyone's build.
2014-04-28 14:30:44 -07:00
333cc6e2d1
[otlayout] Remove unused is_inplace()
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Patch from Jonathan Kew.
2013-10-30 17:30:11 +00:00
101303dbf7
[otlayout] More shuffling around
2013-10-18 11:21:15 +02:00
91689de260
[otlayout] Add _hb_glyph_info_set_glyph_props()
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No functional change.
2013-10-18 11:21:15 +02:00
3ddf892b53
[otlayout] Renaming
2013-10-18 11:21:15 +02:00
03058c3d1e
[otlayout] Remove two unused HB_OT_LAYOUT_GLYPH_PROPS_* values
2013-10-17 20:55:34 +02:00
49901862e3
[otlayout] Guard against use of ReverseChain through Context
2013-10-17 19:48:51 +02:00
e714fe6d6a
[otlayout] Simplify ligate_input()
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Shouldn't change behavior at all, but is faster / more robust.
2013-10-17 13:49:51 +02:00
6b65a76b40
[otlayout] Fix (Chain)Context recursion!
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Previously we only supported recursive sublookups with
ascending indices. We were also not correctly handling
non-1-to-1 recursed lookups.
Fix all that!
Fixes the three tests in test/shaping/tests/context-matching.tests,
which were derived from NotoSansBengali and NotoSansDevanagari
among others.
2013-10-14 18:54:51 +02:00
6c48f20eea
[otlayout] Add structs for JSTF table
2013-09-09 15:43:10 -04:00
45f3d980c9
[OTLayout] Merge / templateize apply_string()
2013-05-04 16:04:04 -04:00
780cd930a9
[OTLayout] Minor
2013-05-04 16:04:04 -04:00
2e0c44f4be
[OTLayout] Add is_inplace() method to GSUB
2013-05-04 16:04:04 -04:00
5d59f99920
[OTLayout] Make MultipleSubst in-place for sequences of len=1
2013-05-02 15:39:16 -04:00
54f84a6b85
[OTLayout] Whitespace
2013-05-02 15:39:16 -04:00
0dc3a4e034
Obssesive optimization
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Not measurable by any means, but conceptually this is faster since
the mask matches more often than the digest.
2013-04-17 23:04:03 -04:00
ee5464d17f
[OTLayout] Move code around
2013-03-09 01:59:30 -05:00
9c5a9ee967
[OTLayout] Rename process() to dispatch()
2013-03-09 01:55:04 -05:00
99fa9ea020
Minor
2013-02-15 11:47:24 -05:00
607feb7cff
[OTLayout] Ignore default-ignorables when matching GSUB/GPOS
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When matching lookups, be smart about default-ignorable characters.
In particular:
Do nothing specific about ZWNJ, but for the other default-ignorables:
If the lookup in question uses the ignorable character in a sequence,
then match it as we used to do. However, if the sequence match will
fail because the default-ignorable blocked it, try skipping the
ignorable character and continue.
The most immediate thing it means is that if Lam-Alef forms a ligature,
then Lam-ZWJ-Alef will do to. Finally!
One exception: when matching for GPOS, or for backtrack/lookahead of
GSUB, we ignore ZWNJ too. That's the right thing to do.
It certainly is possible to build fonts that this feature will result
in undesirable glyphs, but it's hard to think of a real-world case
that that would happen.
This *does* break Indic shaping right now, since Indic Unicode has
specific rules for what ZWJ/ZWNJ mean, and skipping ZWJ is breaking
those rules. That will be fixed in upcoming commits.
2013-02-14 12:57:50 -05:00
407fc12466
[OTLayout] Remove bogus caching of glyph property
2013-02-13 11:13:06 -05:00
8303593ba1
Minor
...
Use pointers instead of references, in preparation for upcoming change.
2012-12-04 17:08:41 -05:00
3038ae6adb
[OTLayout] Minor
2012-11-30 08:24:13 +02:00
b67881b171
[OTLayout] Remove operator() from Coverage
2012-11-24 19:13:55 -05:00
4c4e8f0e75
[OTLayout] Reuse apply context for recursion
2012-11-24 01:13:20 -05:00
26514d51b6
[OTLayout] More collect_glyphs()
2012-11-23 18:13:48 -05:00
c6fb843f2a
[OTLayout] Templatize process_recurse_func
2012-11-23 18:04:08 -05:00
9b34677f36
[OTLayout] Clean up closure() a bit
2012-11-23 17:55:40 -05:00
f48ec0e834
[OTLayout] Add process() tracing
2012-11-23 17:23:41 -05:00
ed2e135944
[OTLayout] More Extension templatizing
2012-11-23 17:10:40 -05:00
7dddd4e72b
[OTLayout] More templatizing Extension
2012-11-23 17:04:55 -05:00
653eeb2645
Make Extension a template
2012-11-23 16:57:36 -05:00
08f1eede1b
Minor
2012-11-23 16:51:43 -05:00
be218c688c
Pass this object to trace macros
2012-11-23 15:32:14 -05:00
c779d82b2f
Fix warnings
2012-11-23 14:09:21 -05:00
ec35a72a44
[OTLayout] Port apply() operator to process() template
2012-11-22 16:33:46 -05:00
2005fa5340
[OTLayout] Port would_apply() and get_coverage() to process() templates
2012-11-22 16:33:46 -05:00
44fc237b53
[OTLayout] Port closure() to process() template
2012-11-22 16:33:46 -05:00
e8cfdd7fa8
Start implementing collect_glyphs() operation
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Not functional yet.
2012-11-16 19:07:06 -08:00
7d52e6601f
Whitespace
2012-11-16 18:49:54 -08:00
5a08ecf920
Implement hb_ot_layout_get_glyph_class()
2012-11-16 13:34:29 -08:00
0bc7a38463
[OT] Fix ReverseChainingSubst
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We should make it clear that we don't want output buffer in this case,
otherwise buffer->backtrack_len() would be wrong.
2012-10-29 22:02:45 -07:00
fabd3113a9
[OT] Port Arabic fallback shaping to synthetic GSUB
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All of init/medi/fina/isol and rlig implemented.
Let there be dragons... ⻯
2012-09-06 00:51:44 -04:00
1d3947a6bd
Minor
2012-09-04 22:42:17 -04:00
b3b89b6658
[OT] Add SubstLookup serialize API
2012-09-04 21:28:33 -04:00
a930c68e9c
[OT] More serialize. Implements all basic GSUB subtables
2012-09-04 19:16:09 -04:00
1b38b4e817
Minor
2012-09-04 18:17:21 -04:00
2bd9fe3598
Refactor
2012-09-04 15:15:19 -04:00
2941683358
[OT] Implement serialize() for AlternateSubst
2012-09-03 23:31:14 -04:00
1f07e3382a
[OT] Implement serialize() for MultiSubst
2012-09-03 23:28:34 -04:00
4912030dfb
Minor
2012-09-03 21:00:48 -04:00
c61be03d6d
[OT] A bit more serialize
2012-09-01 21:49:44 -04:00
abcc5ac1fd
[OT] Improve serialize syntax
...
For some definition of improvement...
2012-09-01 21:30:17 -04:00
bc5be24014
[OT] Restart work on serialize()
2012-09-01 21:25:20 -04:00
5e399a8a45
Minor
2012-08-29 10:40:49 -04:00
a177d027d1
[GSUB] Move ligation logic over
2012-08-28 23:18:22 -04:00
Ebrahim Byagowi
Behdad Esfahbod