752e393ad2
[subset] avoid calling clear on null pool set.
2021-03-30 15:12:52 -06:00
9ed5f04a70
[subset] Simplify recent out-of-memory fixes
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By checking return status of map->set().
2021-03-29 18:14:30 -06:00
52df6b9fd8
[subset] check for set insertion success.
2021-03-29 17:41:07 -06:00
c6adb90a27
[subset] fix nullptr deref.
2021-03-29 17:41:07 -06:00
56ca435787
[subset] fix for collect_features and remove_redundant_lamngsys
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previously remove_redundant_sys () is missing in harfbuzz, after
redundant langsys removal, some features are removed as well in
prune_features() in fonttools. This change is trying to get the same
result between harfbuzz and fonttools.
2021-03-17 14:24:04 -07:00
0e1c0fa404
[subset] optimize glyph closure method: step 5
...
add testcase and some fixes
2021-03-17 15:22:07 -06:00
b8a58a0c0b
[subset] optimize glyph closure method: step 4
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optimize recurse_lookups in Context/ChainContext
glyph closure, only the glyphs that the parent lookup
can apply the recursion to can participate in recursing
the lookup.
2021-03-17 15:22:07 -06:00
b4fc593c3c
[subset] optimize glyph closure method: step1
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Previous GSUB glyph closure is done by recursively visiting
all reachable lookup tables that apply to any glyphs in the
current/input glyph set, but actually only the glyphs that
the parent lookup can apply the recursion to can participate
in recursing the lookup. This is step 1 for glyph closure
optimization:
1. Add stack of currently active glyph set pointers into hb_closure_context_t
2. Update closure() method in simple GSUB tables to use
this stack in order not to change current glyph set at different stages
of recursion
3. Add function may_have_non_1to1() to GSUB tables
2021-03-17 15:22:07 -06:00
8450f43ae1
[buffer] HB_NODISCARD next_glyph()
2021-03-15 16:01:35 -06:00
34a1204f10
[buffer] HB_NODISCARD output_glyph()
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Also, generalize and use replace_glyphs() in morx where output_glyph() was used
in a loop.
2021-03-15 16:01:35 -06:00
cac6c86d2f
[buffer] HB_NODISCARD move_to()
2021-03-15 13:56:46 -06:00
3f1998a065
[buffer] HB_NODISCARD replace_glyph()
2021-03-15 13:33:44 -06:00
2902529b92
[subset] Fix HB_TINY build
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Fixes https://github.com/harfbuzz/harfbuzzjs/issues/34#issuecomment-789247723
2021-03-02 15:05:39 -07:00
83b66bfb66
Another try to fix narrowing error
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../src/hb-ot-layout-gsubgpos.hh: In instantiation of ‘void OT::ChainRule::serialize_array(hb_serialize_context_t*, OT::HBUINT16, Iterator) const [with Iterator = hb_map_iter_t<hb_array_t<const OT::IntType<short unsigned int> >, const hb_map_t*&, (hb_function_sortedness_t)0, 0>; typename hb_enable_if<hb_is_iterator_of<Lhs, typename Lhs::item_t>::value>::type* <anonymous> = 0; OT::HBUINT16 = OT::IntType<short unsigned int>]’:
../src/hb-ot-layout-gsubgpos.hh:2341:30: required from here
../src/hb-ot-layout-gsubgpos.hh:2326:15: error: narrowing conversion of ‘(unsigned int)g’ from ‘unsigned int’ to ‘short unsigned int’ inside { } [-Werror=narrowing]
c->copy (HBUINT16 {g});
~~~~~~~~^~~~~~~~~~~~~~
https://github.com/harfbuzz/harfbuzz/pull/2875
2021-02-23 13:04:38 -07:00
f4f35a4d5f
[constexpr] Use initializer instead of assignment
2021-02-22 22:32:42 -07:00
6d94194497
Use auto in range-for-loop more
2021-02-19 17:10:06 -07:00
08a4997fde
[subset] Add subset support for Extension lookups (GPOS 9, GSUB 7).
2021-02-11 13:41:31 -07:00
dfa9d7acdc
[minor] Use serializer->propagate_error() to simplify code
2021-02-11 11:19:51 -07:00
d7e2a51de2
[minor] Add unlikely() when checking for error
2021-02-11 10:55:03 -07:00
1da75afbe8
[minor] Add unlikely()
2021-02-10 00:03:41 -07:00
6e1afac64b
[minor] Rename internal variable
...
To address review comment:
https://github.com/harfbuzz/harfbuzz/pull/2699#discussion_r573370781
2021-02-09 18:48:46 -07:00
6a3fd94f3b
Merge pull request #2699 from googlefonts/gpos_8
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[subset] Add a more complex layout subsetting test case and fix the issues it exposed.
2021-02-09 20:49:04 -05:00
8f47dd5779
[subset] don't set lookup visited in closure_lookups_context_t::recurse.
...
- Lookup::closure_lookups also checks if the lookups visited and sets the lookup to visited. If we set visited in 'recurse' then Lookup::closure_lookups will fail to recurse into the children of the lookup.
- Also when copying ChainRule's skip LookupRecord's that point to lookups which aren't retained. This matches FontTool's behaviour.
2021-02-09 20:34:52 -05:00
53806e5b83
Tiny improvement on previous commit
...
Functionally the same.
2020-11-25 11:51:37 -07:00
a5f6f869e8
Drop layout table if layout lookup accelerator allocation failed
...
If the table is kept, when the table is present but only the accelerator
allocation failed, then we run into nullptr dereferences downstream in
hb_ot_map_t::apply when trying to access proxy.accels[i].
To fix this, instead of only setting lookup_count of accelerator_t
itself, drop the whole table to avoid hb-ot-map construction assuming
that the lookups will work correctly despite accelerator allocation
having failed.
Fixes:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24490
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24490
2020-11-25 10:18:04 -08:00
718bf5aab3
[subset] only keep features reachable from script in the final subset.
...
Matches fontTools behaviour.
2020-09-29 13:16:01 -07:00
e583505334
[subset] Use plan->glyphset_gsub instead of plan->glyphset for GSUB/GPOS
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This matches fontTools behaviour. glyphset_gsub does not contain gids added from closing over composite glyphs in glyf, since these cannot particpate in GSUB/GPOS processing.
2020-09-29 11:16:15 -07:00
940e1c6f98
[subset] ChainContextFormat3 - don't subset glyph sequences.
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The backtrack, input, and lookahead sequence must be matched in their entirety so these sequences should not be subset. If any of the coverage tables in a sequence subsets to empty then the whole subtable should be dropped since it's not possible for this lookup to be activated.
2020-09-28 17:22:01 -07:00
e31c2690f8
[subset] remove unnecessary returns.
2020-09-28 16:51:25 -07:00
ad241f9917
[subset] check that sub rules in ChainContextFormat 1 and 2 intersect the glyphs set before recursing during closure lookups.
2020-09-28 15:26:13 -07:00
9fad540245
[subset] check that sub rules in ContextFormat 1 and 2 intersect the glyphs set before recursing during closure lookups.
2020-09-28 13:24:25 -07:00
a5c0ec7516
[subset] For [Chain]ContextFormat3 make sure the sub table intersects the retained glyphset before recursing to its lookups.
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Otherwise the lookup closure will potentially pull in lookups which cannot be accessed via the retained glyph set.
2020-09-25 14:57:20 -07:00
dc375559fd
[subset] shrink the serialize buffer when pruning empty offsets in ChainContextFormat2.
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Currently the code reduces the array length, but does not trim back the space allocated in the serializer for those empty offsets.
2020-09-25 13:08:46 -07:00
90eb1a40eb
[subset] In ChainContextFormat3 don't skip subsetting if backtrack or lookahead are empty.
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It's valid to have a ChainContextFormat3 with either an empty backtrack or lookahead. Only drop the lookup if the input sequence is empty.
2020-09-25 12:36:32 -07:00
8c3d4de796
[subset] Fix integer underflow in ContextFormat2.
2020-09-11 15:52:46 -07:00
1e4fe10b98
[ENOMEM] check for error in visited map during closure features.
2020-08-13 01:43:11 +04:30
9562239f05
[ENOMEM] check for error in lookup visited set.
2020-08-13 01:43:11 +04:30
9748ae7299
Revert "Reordering fails when GDEF table is absent #2140 "
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This reverts commit f4cd99f28ehttps://github.com/harfbuzz/harfbuzz/issues/2516#issuecomment-670969185
2020-08-11 22:51:48 +04:30
06dbb6acbb
[ENOMEM] in GSUB ChainContext subsetting check maps for allocation errors.
2020-08-01 09:21:22 +04:30
5a7cc7fd8b
minor spacing tweak
2020-07-29 08:33:38 +04:30
d0e2addd43
minor
2020-07-18 22:16:02 +04:30
26111a11ad
[dagger] Minor cleanup using hb_enumerate
2020-06-28 13:26:38 -07:00
1535440b48
[dispatch] Fix debug builds
2020-06-19 08:32:57 -07:00
70d6696cc6
[dispatch] Don't require debug_depth for untraced objects
2020-06-18 17:09:39 -07:00
dc492d7c8a
[dispatch] Comment
2020-06-18 17:03:05 -07:00
25aec0265c
[dispatch] Default return type to hb_empty_t
2020-06-18 16:58:01 -07:00
8d0a90ac1b
[dispatch] Default debug level to 0
2020-06-18 16:53:54 -07:00
d7d8604ec8
Remove excessive trace routes
2020-06-18 16:51:24 -07:00
e47a2ab8f8
Remove unused dispatcher names
2020-06-18 16:48:07 -07:00
b2a1acccd9
Simplify get_glyph_alternates() dispatcher
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Trying to make it **very simple** to add a specialized dispatcher for
one API to be routed to just a few objects (one in this case).
2020-06-18 16:41:31 -07:00
Garret Rieger
Behdad Esfahbod
Qunxin Liu
Dominik Röttsches
Ebrahim Byagowi