Commit Graph

11552 Commits

Author SHA1 Message Date
Garret Rieger 3827a3eb56 [subset] rename serializer::set_error() to err(). 2021-03-18 11:20:03 -07:00
Garret Rieger f561fa6e4c Change priority queue to use (priority, value) instead of (value, priority). 2021-03-18 11:13:47 -07:00
Garret Rieger b14475d2ae [subset] further changes to serializer error handling.
- Rename enum type and enum members.
- in_errors() now returns true for any error having been set. hb-subset now looks for offset overflow only errors to divert to repacker.
- Added INT_OVERFLOW and ARRAY_OVERFLOW enum values.
2021-03-18 10:51:26 -07:00
Garret Rieger 73ed59f7a6 [subset] store errors in the serializer as a flag set.
Make check_assign/check_equal specify the type of error to set.
2021-03-17 15:58:34 -07:00
Garret Rieger b9ecc7420d [subset] init offset_overflow in hb_serialize_context_t. 2021-03-17 15:53:58 -07:00
Garret Rieger cf79fc342d [subset] limit priority bumps to 16. 2021-03-17 15:53:58 -07:00
Garret Rieger 0104409959 Fix repack_tests for distcheck. 2021-03-17 15:53:58 -07:00
Garret Rieger e2f14e81bd [subset] fix memory leaks in test-repacker. 2021-03-17 15:53:58 -07:00
Garret Rieger d3e2ba7c01 [subset] comment cleanup in hb-repacker.hh 2021-03-17 15:53:58 -07:00
Garret Rieger 832f2b599b [subset] Refactor _subset () to reduce nesting and eliminate the use of 'goto'. 2021-03-17 15:53:58 -07:00
Garret Rieger bb5c80a7c2 [subset] add error tracking to the repacker.
Also check for allocation failures as needed.
2021-03-17 15:53:58 -07:00
Garret Rieger b8b8c58b9f [subset] add tests that check for successful repacking of a real font file. 2021-03-17 15:53:58 -07:00
Garret Rieger 6e9468fcfb [subset] cleanup memory leaks in the repacker. 2021-03-17 15:53:58 -07:00
Garret Rieger a7a86a6eb4 [subset] Add prioritization offset resolution.
Vertices can now be prioritized to force them to sort closer to their parent. The resolver will attempt to use this for overflows on non-shared vertices.
2021-03-17 15:53:58 -07:00
Garret Rieger b452b2c76c [subset] refactor repacker graph to cache edge count and distances of vertices. 2021-03-17 15:53:57 -07:00
Garret Rieger 75414e82b5 [subset] Add table duplication overflow resolution. 2021-03-17 15:53:57 -07:00
Garret Rieger 8286bd8094 [subset] use vectors instead of hashmaps throughout the repacker since all keys will be mapped for these use cases. 2021-03-17 15:53:57 -07:00
Garret Rieger 519ae96617 [subset] switch sort_shortest_distance() to use priority queue. 2021-03-17 15:53:57 -07:00
Garret Rieger 5d3511e5b1 [subset] Change compute_distances() to use a priority queue. 2021-03-17 15:53:57 -07:00
Garret Rieger 59ac0a0d0a [subset] Use priority for comparison in heap. 2021-03-17 15:53:57 -07:00
Garret Rieger 4c8dd41ed9 [subset] re-write compute distances to use an array lookup for the distance map. 2021-03-17 15:53:57 -07:00
Garret Rieger 5c4e0ffd97 [subset] Add a basic priority queue datastructure (binary heap). 2021-03-17 15:53:57 -07:00
Garret Rieger dd8e5d0e1b [subset] Only run the repacker for GSUB/GPOS. 2021-03-17 15:53:57 -07:00
Garret Rieger aaa7873d42 [subset] add topological sort by closest distance via Dijkstra's algorithm. 2021-03-17 15:53:57 -07:00
Garret Rieger 8ebe5d734f Implement will_overflow (). 2021-03-17 15:53:57 -07:00
Garret Rieger 6b1ea4cbe7 [subset] hook up the repacker to run if offset overflows are encountered during subsetting. 2021-03-17 15:53:57 -07:00
Garret Rieger f4c78cc7dd [subset] Implement Kahn's algo for topological sorting instead of BFS. 2021-03-17 15:53:57 -07:00
Garret Rieger 00f393dc3f [subset] finish up BFS sort implementation. 2021-03-17 15:53:57 -07:00
Garret Rieger 1584d3cb8f [subset] Start a proof of concept implementation of the GSUB/GPOS offset overflow resolver. 2021-03-17 15:53:57 -07:00
Behdad Esfahbod a7d120aeab
Merge pull request #2835 from googlefonts/remove_redundant_sys
[subset] Remove redundant LangSys
2021-03-17 14:33:33 -07:00
Qunxin Liu 56ca435787 [subset] fix for collect_features and remove_redundant_lamngsys
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
Garret Rieger 69d772e522 [subset] Fixed test gsub5 test files. 2021-03-17 15:22:07 -06:00
Qunxin Liu 0e1c0fa404 [subset] optimize glyph closure method: step 5
add testcase and some fixes
2021-03-17 15:22:07 -06:00
Qunxin Liu b8a58a0c0b [subset] optimize glyph closure method: step 4
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
Qunxin Liu 62423504ee [subset] optimize glyph closure method: step 3
Add function intersects_coverage_glyphs that collects
set of matching glyphs in Coverage table
2021-03-17 15:22:07 -06:00
Qunxin Liu ef78d0f923 [subset] optimize glyph closure method: step 2
Add function intersects_class_glyphs that collects
set of glyphs matching class in ClassDef table
2021-03-17 15:22:07 -06:00
Qunxin Liu b4fc593c3c [subset] optimize glyph closure method: step1
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
Behdad Esfahbod 5f4c321d4a
Merge pull request #2894 from googlefonts/gpos_2
[subset] Update PairPosFormat2 subsetting to match fontTools
2021-03-17 10:20:59 -07:00
Garret Rieger 1b79b8cd2d [subset] update gpos tests to reflect updated behaviour. 2021-03-16 15:23:11 -07:00
Garret Rieger 2df39bcae7 [subset] don't allocate a set to use as a glyph filter for PairPosFormat2. 2021-03-16 14:49:35 -07:00
Garret Rieger b1b1486d07 [subset] update expected files to not include cmap12 pruning. 2021-03-16 14:49:35 -07:00
Garret Rieger bb54e1047d [subset] Also filter class1 by coverage when collecting variation indices for PairPosFormat2. 2021-03-16 14:49:35 -07:00
Garret Rieger 190b7a98f8 [subset] Update PairPosFormat2 subsetting to match fontTools updated subsetting (https://github.com/fonttools/fonttools/pull/2221)
- subset class def 1 against the coverage table.
- Don't re-use class 0 in class def 2.
- Ignore class 0 glyphs for the purposes of determing format 1 vs format 2 encoding for ClassDef.

Add an additional test case which demonstrates these issues.
2021-03-16 14:49:35 -07:00
Khaled Hosny 03538e872a 2.8.0 2021-03-16 19:28:35 +02:00
Khaled Hosny 4c34478b28
Merge pull request #2899 from harfbuzz/ci-fix
[ci] Don’t install meson from its master branch
2021-03-16 10:37:49 +02:00
Behdad Esfahbod daeb277346
Merge pull request #2900 from harfbuzz/nodiscard-buffer
Mark buffer modification methods that can fail with nodiscard
2021-03-15 18:50:02 -07:00
Khaled Hosny f2d08578e7 [tests] Increase shape-fuzzer timeout 2021-03-16 01:15:40 +02:00
Khaled Hosny cad753e20f [ci] Use known working Ubuntu version
GitHub Actions seems to be moving ubuntu-latest from ubuntu-18.04 to
ubuntu-20.04, but gcovr is broken for us in the new version.
2021-03-16 01:11:12 +02:00
Khaled Hosny ff86c72e09 [ci] Avoid duplicate builds on pull requests
Don’t run GitHub Actions on pushing to branches other than master. This
was already the case for the linux-ci workflow.
2021-03-16 01:11:12 +02:00
Behdad Esfahbod f5356bcb61 [ci] Switch back to c++2a
Okay I guess we can be bothered to fix things up for next version of C++.

Reverts meat of c0b3b9b258
2021-03-15 16:52:39 -06:00