6bc64317ca
Add a writeup of the overflow resolution algorithm in harfbuzz.
2021-10-12 17:10:07 -06:00
96299d70ed
Fix Wbitwise-instead-of-logical warnings
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`a || b` only evaluates b if a is false. `a | b` always evaluates
both a and b. If a and b are of type bool, || is usually what you
want, so clang now warns on `|` where both arguments are of type bool.
This warning fires twice in harfbuzz. In both cases, `|` is used
intentionally, with a comment explaining this.
Slightly reorder the code a bit to make the compiler happy, and to
make it obvious even without a comment that both calls should be evaluated.
No intended behavior change.
2021-10-12 08:56:54 -06:00
b621c4fc29
[subset] Refine the coding style
2021-10-11 13:07:12 -06:00
f8538d3117
[subset] Export header & archive when HB_BUILD_SUBSET
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Ease the adopt of hb-subset feature for 3rd party developers
2021-10-11 13:07:12 -06:00
36ed56b6e8
[subset] code cleanup
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- rename copy() method if it takes extra parameter
- get rid of same code blocks
2021-10-09 13:37:20 -06:00
3e635cf5e2
[USE] Categorize characters that only have AJT
2021-10-09 07:53:48 -06:00
ae193cd182
[USE] Insert dotted circles before lone viramas
2021-10-09 07:50:09 -06:00
641296b5eb
[USE] Categorize U+11046 BRAHMI VIRAMA as HALANT
2021-10-09 07:50:09 -06:00
cca42cda46
Merge pull request #3249 from harfbuzz/use-merge-s-o
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[USE] Merge the categories S and O
2021-10-08 13:10:21 -06:00
bb50aae9b4
[USE] Document customizations of USE categories
2021-10-08 13:25:46 -04:00
7287125c58
[USE] Merge the categories S and O
2021-10-08 13:14:33 -04:00
8eaee2f887
[USE] Only skip default ignorables within CCSes
2021-10-08 10:15:08 -06:00
4645c3b47c
Update comments for U+180F FVS4
2021-10-07 08:52:02 -04:00
5b882c420a
[repacker] performance optimizations for topological sorting.
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- Presize the output sorted graph and write it once in the correct order to avoid needing to reverse.
- Swap the old/new graph vectors instead of copying.
- Use a boolean vector for tracking visited instead of a set.
2021-10-06 11:43:47 -07:00
ff7a86e9b0
[repacker] remove clone buffer, they are unnessecary.
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When nodes are duplicated it's fine to just reuse head, tail from the node being cloned since we don't modify the contents.
2021-10-06 10:51:45 -07:00
8cae8b653d
[repacker] add missing fini for parents vector.
2021-10-05 14:03:02 -07:00
7f0ede4f04
[repacker] refactor resolve overflow tests to use a helper.
2021-10-05 13:10:01 -07:00
79937d24b7
[repacker] Add repacker test that requires space splitting.
2021-10-05 12:53:21 -07:00
7883b7ed95
[repacker] Add additional splitting spaces test.
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Fix issues it uncovered.
2021-10-05 12:46:59 -07:00
6265663de4
[repacker] add test for splitting spaces.
2021-10-05 11:30:04 -07:00
d97bd4268a
[repacker] when assigning spaces use post isolation node indices.
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isolate_subgraph can result in some of the roots being duplicated and moved to new indices, so do subgraph isolation before assign roots to spaces.
2021-10-05 10:53:05 -07:00
bb57df7a4f
[test] Add test for https://github.com/harfbuzz/harfbuzz/issues/2757#issuecomment-933531978
2021-10-05 16:04:10 +02:00
1624550377
[test] Add test for https://github.com/harfbuzz/harfbuzz/issues/3244
2021-10-05 16:04:10 +02:00
ccfc048153
[indic] Apply 'calt' and 'clig' across syllable boundaries
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Fixes https://github.com/harfbuzz/harfbuzz/issues/3244
2021-10-05 07:00:50 -06:00
d58f1685ce
[ot-shape] Tweak table order some more; apply GPOS with morx
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During 5bc05ba155https://github.com/harfbuzz/harfbuzz/issues/2757#issuecomment-933531978
2021-10-04 08:40:24 -06:00
f8ebb8a657
[USE] Update the data files
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This uses the data files from
<c355d04194/USE
2021-10-04 08:14:20 -06:00
564afc425a
[USE] Remove overrides for hieroglyphic categories
2021-10-04 08:14:20 -06:00
8c65442069
[Unicode 14] Handle U+180F FVS4
2021-10-04 08:14:20 -06:00
375a6c8f81
[repacker] add the ability to move subgraphs from a shared space into their own space.
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Used to resolve overflows during manual resolution.
2021-09-29 18:14:57 -07:00
0dccbf368f
[repacker] Handle the case where a subgraph root has an incoming 32 and 16 bit edge.
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In this case the entire subgraph from that root will be duplicated.
2021-09-29 14:28:27 -07:00
794b00db4b
[subset] fuzzer fix: https://oss-fuzz.com/testcase-detail/6616166961905664
2021-09-29 10:29:06 -06:00
816c5302a7
[repacker] restrict 32 bit subgraph connected component search to only nodes reachable via directed links.
2021-09-28 16:04:27 -07:00
67eb222b8e
[repacker] when assigning each connected subgraph a space, also isolate it.
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This will break any links coming from space 0 (ie. the 16 bit offset only space).
2021-09-28 13:54:54 -07:00
307acf7fb0
[repacker] add space assignment based on connected components.
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Assign each connected component that is underneath one or more 32 bit offsets into a unique space. This ensures that 32 bit subgraphs which are connected are packed into the same space.
2021-09-28 12:08:18 -07:00
c77bdf1dcf
[repacker] begin storing each nodes parents.
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Will be used for connected component search.
2021-09-27 14:42:54 -07:00
a52c6df38a
[subset] Fix bug in composite operation counting.
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Adding the result of add_gid_and_children to operation count over counts the number of operations.
2021-09-27 14:18:36 -06:00
efda2f14e1
[repacker] fix bug in subgraph isolation.
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Prior to this fix id remapping at the end of the isolation operation was fed the old subgraph instead of the new one. Which results in object indices being remapped for the nodes outside of the new subgraph. Adds a test which detects this problem.
2021-09-24 17:53:08 -06:00
6f19094398
[getn-hb-version.py] Open old output in UTF-8 mode as well
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Fixes https://github.com/harfbuzz/harfbuzz/issues/3227
2021-09-23 08:39:29 -06:00
9247d24d7f
[repacker] s/0/HB_TAG_NONE
2021-09-22 18:18:50 -06:00
fe155de989
[repacker] handle a couple of duplication edge cases.
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- Detect cases where there are multiple links from a parent to a child. Don't duplicate that child if those are the only remaining links to the child.
- Correctly handle isolating a subgraph where the root idx has multiple incoming links.
2021-09-22 18:18:50 -06:00
c19ec97da7
[repacker] reduce the bits used by order by 2 to give more bits to distance.
2021-09-22 18:18:50 -06:00
d5beb96e06
[repacker] add repacker isolation test on real font.
2021-09-22 18:18:50 -06:00
d0daa7a59b
[repacker] add a couple more complex isolation tests.
2021-09-22 18:18:50 -06:00
62c502cd9d
[repacker] correctly update incoming_edges in duplicate.
2021-09-22 18:18:50 -06:00
a57ef8df7e
[repacker] default space to 0.
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Since vector push() init's new objects to all zeros.
2021-09-22 18:18:50 -06:00
58facaade1
[repacker] put each 32 bit subgraph into it's own packing space.
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Each subgraph pointed to by a 32 bit offset should be packed into it's own space. This adds a space property to vertices which affects the distance calculation. This effectively places the distances for all of the nodes of a 32 bit subgraph into a distinct range. Thus all of the nodes of the subgraph will be packed together.
2021-09-22 18:18:50 -06:00
543a3f9733
[repacker] Add repacker test for subgraph isolation.
2021-09-22 18:18:50 -06:00
7147f169d6
[repacker] recursively duplicate nodes during isolation.
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If a node is duplicated during isolation then any children it has will have incoming links from outside the subgraph (from the duplicated node and the original node), so they must be duplicated too.
2021-09-22 18:18:50 -06:00
41bbf2812e
[repacker] do extension subtable isolation before starting resolution attempts.
2021-09-22 18:18:50 -06:00
8d8b7458a4
[repacker] extract overflows processing into its own method.
2021-09-22 18:18:50 -06:00
Garret Rieger
Nico Weber
faywong
Qunxin Liu
David Corbett
Behdad Esfahbod
Khaled Hosny