Commit Graph

3999 Commits

Author SHA1 Message Date
Behdad Esfahbod 7793aad946 Normalize various spaces to space if font doesn't support
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
Behdad Esfahbod 8b3c7f9ede [test] Support recording multiple lines of text in record-test.sh 2015-11-04 15:48:51 -08:00
Behdad Esfahbod 8565839480 Protect against possible invalid-memory access after OOM 2015-11-04 14:46:52 -08:00
Behdad Esfahbod 4cc80bed25 Fix typo!
Ouch!  Fortunately that function was unused.
2015-11-04 14:46:10 -08:00
Behdad Esfahbod 9ac4b9656d Add Unicode space category
Unused so far.
2015-11-04 14:19:25 -08:00
Behdad Esfahbod 8249ec3f86 Make top-byte of unicode_props available to be used differently per-GC 2015-11-04 13:26:17 -08:00
Behdad Esfahbod cc5d3a3388 Towards using top-byte of unicode-props for more things 2015-11-04 13:22:33 -08:00
Behdad Esfahbod 2f38dde5a1 Add _hb_glyph_info_is_unicode_mark()
Unused right now.
2015-11-04 13:17:33 -08:00
Behdad Esfahbod 90d75f93bb Tighten ccc-setting a bit and document it 2015-11-03 12:58:12 -08:00
Behdad Esfahbod 2f0dfd43cd Fix test expectation 2015-11-03 12:28:34 -08:00
Behdad Esfahbod df698f3299 [ot-font] Fix hmtx table length checking, *again*
Exactly the same problem that I fixed in
63ef0b41dc

I rewrote the table checking yesterday in
67f8821fb2
and introduced the exact same issue again. :(
Good thing we have ongoing fuzzing going now.  Was discovered
immediately by libFuzzer.  Thanks kcc!

https://github.com/behdad/harfbuzz/issues/139#issuecomment-153449473
Fixes https://github.com/behdad/harfbuzz/issues/156
2015-11-03 12:15:12 -08:00
Behdad Esfahbod 3530cc2d7c [util] Fix option-parsing leaks 2015-11-03 12:13:28 -08:00
Behdad Esfahbod 642135f3b2 [util] In --debug mode, duplicate font data
This has the effect that the font data will end up in a memory
section malloc()ed exactly to its size.  This gives us better
valgrind detection of out-of-bounds access.

Previously, the font data was placed in a mmap()ed section or
GString-allocated area, which didn't have proper protections
at the end when running under valgrind.
2015-11-03 11:26:34 -08:00
Behdad Esfahbod ed2024ef93 [perf] Micro-optimize 2015-11-02 18:03:38 -08:00
Behdad Esfahbod 76a5310a83 Remove irrelevant comment
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
Behdad Esfahbod 8259669fbd Minor 2015-11-02 17:44:05 -08:00
Behdad Esfahbod 9382c471ea Combine unicode_props0/1 into a uint16
Slightly faster.  In prep for more changes.
2015-11-02 17:36:51 -08:00
Behdad Esfahbod 7127718545 [perf] Only call combining_class() for marks
Saves some time.  Also preparing for reusing the ccc byte for other stuff.
2015-11-02 17:27:48 -08:00
Behdad Esfahbod 5ba450407b Make max context-length and max nesting level configurable
...at compile time.
2015-11-02 15:43:39 -08:00
Behdad Esfahbod 67f8821fb2 [ot] Make bad-hmtx handling match FreeType
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
Behdad Esfahbod 672ca3b4e6 Use templates for making sure expression is constant 2015-10-26 14:05:05 -07:00
Behdad Esfahbod 5c8174eda3 Update comments for removal of compat decompositions 2015-10-21 18:51:40 -02:00
Behdad Esfahbod f679970040 Disable compatibility decomposition usage during normalization
Fixes https://github.com/behdad/harfbuzz/issues/152
2015-10-21 17:20:55 -02:00
Behdad Esfahbod ce889189c1 Fix two more -Wshadow warnings
https://bugzilla.mozilla.org/show_bug.cgi?id=1215894
2015-10-21 11:23:12 -02:00
Behdad Esfahbod 4a6b1eedbb Fix one more -Wshadow warning
https://bugzilla.mozilla.org/show_bug.cgi?id=1215894
2015-10-21 11:20:55 -02:00
Behdad Esfahbod 6f932bc8f9 Fix a few more -Wshadow-local warnings
https://bugzilla.mozilla.org/show_bug.cgi?id=1215894
2015-10-21 11:16:49 -02:00
Behdad Esfahbod b90cb366d7 Fix one -Wshadow-compatible-local warning
From https://bugzilla.mozilla.org/show_bug.cgi?id=1215894
2015-10-21 11:13:21 -02:00
Behdad Esfahbod 50e5750bd8 Avoid unnecessary cast to 64-bit
Fixes https://github.com/behdad/harfbuzz/issues/146

Or I think it should.
2015-10-21 11:10:40 -02:00
Behdad Esfahbod 305d2fbf5a Add HB_FALLTHROUGH
Borrowed from https://bugzilla.mozilla.org/show_bug.cgi?id=1215411
2015-10-21 11:04:28 -02:00
Behdad Esfahbod 6486e37554 Fix typo 2015-10-20 16:39:41 -02:00
Behdad Esfahbod 753ea7b909 Add BUILD.md to dist 2015-10-20 15:21:18 -02:00
Behdad Esfahbod 5d7a30fde0 Merge pull request #148 from ebraminio/inst
Add BUILD.md based on harfbuzz.org docs
2015-10-20 15:19:41 -02:00
Behdad Esfahbod 904b0dc381 Merge pull request #147 from ebraminio/dockerci
[ci] change to docker infrastructure
2015-10-19 16:59:43 -02:00
Ebrahim Byagowi ba096bcc28 [ci] change to docker infrastructure 2015-10-19 22:17:13 +03:30
Ebrahim Byagowi 2fb95a0c9d Add BUILD.md based on harfbuzz.org docs 2015-10-19 22:02:12 +03:30
Behdad Esfahbod 86cadc2cd4 1.0.6 2015-10-15 20:25:29 -03:00
Behdad Esfahbod ca97ea7aa2 [ft] Revert change-of-behavior of hb_ft_font_create() introduced in 1.0.5
The default FreeType load flags where changed from FT_LOAD_NO_HINTING
to FT_LOAD_DEFAULT in 2a9627c564.
This is crashing HarfBuzz-enabled FreeType as I suppose it causes
infinite recursion between HB and FT autohinter...

Revert the behavior change.

Fixes https://github.com/behdad/harfbuzz/issues/143
2015-10-15 20:20:22 -03:00
Behdad Esfahbod 338ffec9e4 Add tests for a couple of fixed issues found by libFuzzer
From:
https://github.com/behdad/harfbuzz/issues/139#issuecomment-147616887
https://github.com/behdad/harfbuzz/issues/139#issuecomment-148289957
2015-10-15 12:56:19 -03:00
Behdad Esfahbod 63ef0b41dc [ot-font] Fix hmtx wrong table length check
Discovered by libFuzzer.  Ouch!

https://github.com/behdad/harfbuzz/issues/139#issuecomment-148289957
2015-10-15 12:54:28 -03:00
Behdad Esfahbod 613e630617 Reduce max nesting level from 8 to 6
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
Behdad Esfahbod ab17052924 1.0.5 2015-10-13 10:55:33 -03:00
Behdad Esfahbod ed13e2ce50 [ot-font] Fix leak
https://github.com/behdad/harfbuzz/issues/139#issuecomment-147616887
2015-10-13 10:32:56 -03:00
Behdad Esfahbod 55db94be2b Add test for previous commit 2015-10-13 00:33:59 -04:00
Behdad Esfahbod f966649747 Fix another memory access issue discovered by libFuzzer
Fixes https://github.com/behdad/harfbuzz/issues/139#issuecomment-146984679
2015-10-13 00:30:50 -04:00
Behdad Esfahbod c1a5dc46c2 [fuzz] Add fuzzing script from kcc@
https://github.com/behdad/harfbuzz/issues/139
2015-10-12 17:39:52 -04:00
Behdad Esfahbod cc6ea308d4 Extern "C" custom-allocator declerations 2015-10-12 17:21:52 -04:00
Behdad Esfahbod 98c6fccc00 Add test for ee9b0b6cb5 2015-10-11 21:41:04 -04:00
Behdad Esfahbod 50f489a0a0 Typo 2015-10-11 20:59:29 -04:00
Behdad Esfahbod ee9b0b6cb5 Fix another sanitize bug
Also discovered by "libFuzzer".
2015-10-09 14:23:15 -04:00
Behdad Esfahbod 34379b49e6 Add test for previous fix 2015-10-09 12:34:02 -04:00