Commit Graph

557 Commits

Author SHA1 Message Date
Behdad Esfahbod 331d07bd40 Minor 2017-01-19 16:51:36 -08:00
Behdad Esfahbod b5ecf1bfa4 Fix warnings 2017-01-19 16:50:29 -08:00
Behdad Esfahbod 2f2ceee185 Minor 2017-01-19 16:48:01 -08:00
Khaled Hosny 2452543fdd [ot] Fix automatic fraction for RTL scripts (#405)
The numbers for right-to-left scripts are processed also from right to
left, so the order of applying “numr” and “dnom” features should be
reversed in such case.

Fixes https://github.com/behdad/harfbuzz/issues/395
2017-01-18 12:48:13 -08:00
Sascha Brawer 1337428e4f Update language tags to OpenType 1.8.1 (#403)
Resolves https://github.com/behdad/harfbuzz/issues/324
2017-01-18 04:51:02 -08:00
Behdad Esfahbod 31f7b1bb94 Add tests for USE using Marchen font and text
From http://www.babelstone.co.uk/Fonts/Marchen.html
2017-01-05 20:20:06 -08:00
Behdad Esfahbod 4b4a1b9f23 Fix assert fail with contextual matching
As discovered by libFuzzer / Chromium fuzzing.

Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=659496
CC https://github.com/behdad/harfbuzz/issues/139
2016-12-21 23:14:16 -06:00
Behdad Esfahbod a0688e8e7b Ouch, finish previous change 2016-12-20 20:52:50 -06:00
Behdad Esfahbod de14c19d14 [fuzzer] Separate main() into a new file 2016-12-20 20:50:38 -06:00
Mike Hommey 1c98ff87c7 Support building with older glib versions
It is desirable to be able to build against older versions of glib.

fd7a245 changed the configure check to require glib > 2.38 for
G_TEST_DIST. Before that, version 2.16 was required, but in fact,
since aafe395, G_PASTE is being used, which was introduced in 2.19.1.
And since 0ef179e2, hb-glib uses GBytes, which were introduced in
2.31.10.

2.19.1 is rather old, but 2.38 is rather new. For Firefox, building
against 2.22 is still supported, although we could probably get away
with bumping that to 2.28. Either way, GBytes is not available.

Arguably, if you build against a glib that doesn't support GBytes,
you're not going to use the hb_glib_blob_create function, so we hide
the function when building against such a glib.

As for G_TEST_DIST, when building against versions of glib that don't
support it, we can fallback to the previous behavior, which, AIUI, was
just making the test not work when building in a separate directory.
2016-12-18 01:37:07 -06:00
Behdad Esfahbod 8c842e4a44 [hb-fuzzer] Get glyph extents for output glyphs
To exercise glyph-extents codepaths (glyf / CBLC+CBDT).
2016-12-04 20:28:38 -08:00
Behdad Esfahbod 9f6144cdb9 [CBDT] Add test for fetching glyph extents 2016-12-04 19:55:17 -08:00
Behdad Esfahbod d163cd9562 [tests] Add tests for vertical origin with ft and ot font-funcs 2016-10-26 18:27:48 +02:00
Frédéric Wang c3fa5d0e03 Remove inexistent file ttx file from test/api/Makefile.am 2016-10-24 21:42:04 +02:00
Behdad Esfahbod 34fc4a2cfa Fix dist 2016-10-04 14:47:12 -07:00
Behdad Esfahbod 46cc4a3a2a [MATH] Rename hb_math_*_t types to hb_ot_math_*_t
With this, I believe MATH table API is not ready to be merged.
2016-09-27 16:44:22 +02:00
Frédéric Wang 8d622f1114 Add tests for get_mathvariant (#329) 2016-09-27 13:53:34 +02:00
Frédéric Wang 485e4873fb Add tests for hb_ot_math_get_glyph_variants (#328) 2016-09-27 13:18:00 +02:00
Behdad Esfahbod a5629a2ed9 [MATH] Simplify test 2016-09-27 11:31:29 +02:00
Frédéric Wang edcfa789bf test-ot-math: Use different scales for vertical and horizontal directions and add test for hb_ot_math_get_min_connector_overlap. (#327) 2016-09-27 11:02:08 +02:00
Behdad Esfahbod cdc9eef7da [MATH] Enable tests for glyph-assembly italics-correction 2016-09-26 22:18:41 +02:00
Behdad Esfahbod 86106c7528 [MATH] Rename all API to hb_ot_math_* 2016-09-26 22:14:29 +02:00
Frédéric Wang 51da7a1cd6 MATH table: Add API to access math variants. 2016-09-26 15:18:16 +01:00
Frédéric Wang 722e620f20 Use G_TEST_DIST to build the path of math test fonts 2016-09-26 13:49:18 +01:00
Behdad Esfahbod 17ff30e9af [MATH] Clean up get_top_accent_attachment()
Note, the function now returns "half of horizontal advance width"
if top accent attachment for glyph is not explicitly defined.
This is what the spec requires.  Updated tests.
2016-09-26 12:21:27 +01:00
Behdad Esfahbod 8bcf517fe5 [MATH] Clean up get_italics_correction() 2016-09-26 12:13:14 +01:00
Frédéric Wang d7182d1296 MATH Table: Add API to access glyph info. 2016-09-26 11:32:25 +01:00
Frédéric Wang 319ff59161 MATH Table: Add API to access math contants. 2016-09-26 10:49:09 +01:00
Behdad Esfahbod 4d3892e9b0 [MATH] Fixups for previous commit 2016-09-26 10:45:58 +01:00
Frédéric Wang 5fbcb992bd MATH Table: Add API to check availability of math data. 2016-09-26 10:27:33 +01:00
Sascha Brawer e7ecbba2cc Support Americanist Phonetic Notation
OpenType language system tag: `APPH`
https://www.microsoft.com/typography/otspec/languagetags.htm

IETF BCP47 variant tag: `fonnapa`
http://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
2016-08-18 14:13:26 +02:00
Behdad Esfahbod 18c19dd34d Fix build 2016-08-09 13:03:14 -07:00
Behdad Esfahbod 91f2585411 Actually add test 2016-08-08 18:08:08 -07:00
Behdad Esfahbod f1b76275da Add tests for Chinese language tags
Using font from https://github.com/behdad/harfbuzz/issues/300
2016-08-08 18:06:09 -07:00
Khaled Hosny 988350586f [tests] Workaround Python 2 “narrow” builds
The so-called Python 2 “narrow” builds support UCS2 only, this is a
workaround to allow unichr to work with any Unicode character in such
builds. This fixes Travis-CI failure as it has narrow Python 2 builds.

Copied from:
https://github.com/behdad/fonttools/blob/master/Lib/fontTools/misc/py23.py
2016-06-18 23:01:58 +02:00
Behdad Esfahbod 6c0aa9e92b Fix build on droid.io 2016-05-06 17:50:53 +01:00
Behdad Esfahbod 9b6312f945 [use] Update to draft spec from Andrew Glass from August 2015 2016-05-06 17:41:49 +01:00
Behdad Esfahbod 30e6e29f0f [indic/use] Move Javanese from Indic shaper to USE
Fixes https://github.com/behdad/harfbuzz/issues/243

With javatext.ttf, the reodering medial Ra gets its advance width
zero'ed in Uniscribe implementation, and the font adds the advance
back.  Our Indic shaper does not do that, but USE does.  So, route
Javanese through USE.  That's what Microsoft does anyway.  Test:

  U+A9A5,U+A9BA

This also seems to fix the following sequence, and variations thereof:

  U+A99F,U+A9C0,U+A9A2,U+A9BF
2016-05-06 15:52:27 +01:00
Behdad Esfahbod c6ee5f5f06 Add Javanese sample text 2016-05-06 15:39:02 +01:00
Behdad Esfahbod f8061ae797 [tests] Fix test 2016-05-02 10:28:24 +02:00
Behdad Esfahbod f00ab2a33a [hb-ot-font] Make 'glyf' table loading lazy
Apparently some clients have reference-table callbacks that copy the table.
As such, avoid loading 'glyf' table which is only needed if fallback positioning
happens.
2016-05-02 10:24:00 +02:00
Behdad Esfahbod f68390f196 [test] Add text for Tibetan shorthand contractions
From http://www.babelstone.co.uk/Tibetan/Contractions.html
2016-04-27 02:44:35 -07:00
Behdad Esfahbod b20305022a Do NOT ignore Mongolian Free Variation Selectors during matching
Fixes https://github.com/behdad/harfbuzz/issues/234
2016-04-26 16:41:17 -07:00
Behdad Esfahbod 6e55199b5f Add test for 6dd80faf0d 2016-04-04 16:24:27 -07:00
Behdad Esfahbod dd8598c1c7 [test] Pass closure to hb_font_set_glyph_func()
Exercises fix in c335fd7986
2016-02-25 11:20:05 +09:00
Behdad Esfahbod af48e3d27c Fix recent test
Not sure why the FT functions were returning advance 1024.  This
caused failure on drone.io.  Switch to hb-ot-font and disable
glyph names.
2016-02-24 16:06:40 +09:00
Behdad Esfahbod 17c8317017 [tests] Fix for multiple options in test runner scripts 2016-02-24 16:06:23 +09:00
Behdad Esfahbod ebd7431f82 Partially revert 86c68c7a2c
That commit moved the advance adjustment for mark positioning to
be applied immediately, instead of doing late before.  This breaks
if mark advances are zeroed late, like in Arabic.  Also, easier to
hit it in RTL scripts since a single mark with non-zero advance is
enough to hit the bug, whereas in LTR, at least two marks are needed.

This reopens https://github.com/behdad/harfbuzz/issues/211
The cursive+mark interaction is broken again.  To be fixed in a
different way.
2016-02-24 15:53:40 +09:00
Behdad Esfahbod 284481b312 Add test for mark positioning in rtl with non-zero mark advance
Apparently I broke this 86c68c7a2c.
Fix coming.
2016-02-24 15:52:37 +09:00
Behdad Esfahbod 56a84e8dd1 [tests] Allow commenting out tests to be skipped 2016-02-24 15:50:33 +09:00
Behdad Esfahbod 525cc7d28c Add note re only adding tests with Free Software fonts 2016-02-23 15:19:27 +09:00
Behdad Esfahbod 6a09d7e34b [test] Add README about how to add shaping tests 2016-02-23 13:47:16 +09:00
Behdad Esfahbod f8ee7906d0 Remove MANIFEST files
They are unused currently.  We can add later if we hook them up
to anything useful.
2016-02-23 13:45:38 +09:00
Behdad Esfahbod 815bdd7700 In cluster-level=0, group ZWJ/ZWNJ with previous cluster
This better emulates Unicode grapheme clusters.

Note that Uniscribe does NOT do this, but should be harmless with most clients,
and improve fallback with clients that use HarfBuzz cluster as unit of fallback.

Fixes https://github.com/behdad/harfbuzz/issues/217
2016-02-22 18:22:44 +09:00
Behdad Esfahbod c373155904 [fuzzing] Add test for recent fix
Test from https://github.com/behdad/harfbuzz/issues/223

I forgot that we do run hb-fuzzer on tests in shaping/tests/fuzzed.tests.
2016-02-19 15:13:07 +07:00
Behdad Esfahbod aa33cb72ab [fuzzing] Make test runner actually work 2016-02-19 15:12:53 +07:00
Behdad Esfahbod 2735555c6b [fuzzing] Add TODO item 2016-02-19 15:12:50 +07:00
Behdad Esfahbod 7e76bbabba [fuzzing] Make "make hb-fuzzer" build lib dependency
Not going to do with util/, but is convenient here.
2016-02-19 14:43:39 +07:00
Behdad Esfahbod da41e48f0a [USE] Zero mark advances by GDEF early
This is what Microsoft's implementation does.  Marks that need advance
need to add it back using 'dist' or other feature in GPOS.  Update tests to
match.
2016-02-16 17:16:33 +07:00
Behdad Esfahbod 86c68c7a2c [GPOS] Fix interaction of mark attachments and cursive chaining
Fixes https://github.com/behdad/harfbuzz/issues/211

What happens in that bug is that a mark is attached to base first,
then a second mark is cursive-chained to the first mark.  This only
"works" because it's in the Indic shaper where mark advances are
not zeroed.

Before, we didn't allow cursive to run on marks at all.  Fix that.
We also where updating mark major offsets at the end of GPOS, such
that changes in advance of base will not change the mark attachment
position.  That was superior to the alternative (which is what Uniscribe
does BTW), but made it hard to apply cursive to the mark after it
was positioned.  We could track major-direction offset changes and
apply that to cursive in the post process, but that's a much trickier
thing to do than the fix here, which is to immediately apply the
major-direction advance-width offsets...  Ie.:

https://github.com/behdad/harfbuzz/issues/211#issuecomment-183194739

If this breaks any fonts, the font should be fixed to do mark attachment
after all the advances are set up first (kerning, etc).

Finally, this, still doesn't make us match Uniscribe, for I explained
in that bug.  Looks like Uniscribe applies minor-direction cursive
adjustment immediate as well.  We don't, and we like it our way, at
least for now.  Eg. the sequence in the test case does this:

- The first subscript attaches with mark-to-base, moving in x only,
- The second subscript attaches with cursive attachment to first subscript
  moving in x only,
- A final context rule moves the first subscript up by 104 units.

The way we do, the final shift-up, also shifts up the second subscript
mark because it's cursively-attached.  Uniscribe doesn't.  We get:

[ttaorya=0+1307|casubscriptorya=0@-242,104+-231|casubscriptnarroworya=0@20,104+507]

while Uniscribe gets:

[ttaorya=0+1307|casubscriptorya=0@-242,104+-211|casubscriptnarroworya=0+487]

note the different y-offset of the last glyph.  In our view, after cursive,
things move together, period.
2016-02-16 16:07:20 +07:00
Behdad Esfahbod 5b5dc2c040 [tests] Add test for advance zeroing of an ASCII letter marked as mark in GDEF 2016-02-11 12:15:38 +07:00
Behdad Esfahbod 3fe0cf1040 Fix previous commit! 2016-02-10 18:43:43 +07:00
Behdad Esfahbod 293a210eee [tests] Fix fonts in cc4a78bf22
They had an invalid LookupFlag (32).
2016-02-10 18:39:59 +07:00
Behdad Esfahbod cc4a78bf22 [tests] Add tests for Latin mark zeroing 2016-02-10 18:24:35 +07:00
Behdad Esfahbod 55ff34b9c1 [tests] Add tests for Thai mark zeroing 2016-02-10 18:24:32 +07:00
Behdad Esfahbod 43bb2b8fb0 Minor 2016-02-10 14:11:43 +07:00
Behdad Esfahbod 505b7d4732 [fuzzing] Fuzz input text
Very rudimentary right now, but will get kcc's bot going.

From
https://github.com/behdad/harfbuzz/issues/139#issuecomment-163580783
2016-01-11 18:31:04 +00:00
Behdad Esfahbod e8a27d7947 Don't build hb-fuzzer in "make", only "make check" 2016-01-07 22:52:16 +00:00
Behdad Esfahbod 99d3495576 [test] Add test text for Kaithi 2016-01-06 12:21:54 +00:00
Behdad Esfahbod 6173c2a6fc Fix flaky test
This test font had a upem of 769, which results in rounding-related errors with
the FreeType font funcs.  Change the upem to 1024 to fix that.

Fixes https://github.com/behdad/harfbuzz/issues/201
2015-12-25 18:18:23 +01:00
Behdad Esfahbod 3fcae6d82d [tests] Add --reference, for re-recording tests 2015-12-25 18:18:02 +01:00
Behdad Esfahbod 2f02fc79a5 Improve ligature-component handling
We use three bits for lig_id these days, so we finally got a report of
two separate ligatures with the same lig_id happening adjacent to each
other, and then the component-handling code was breaking things.
Protect against that by ignoring same-lig-id but lig-comp=0 glyphs after
a new ligature.

Fixes https://github.com/behdad/harfbuzz/issues/198
2015-12-17 15:21:14 +00:00
Behdad Esfahbod 2ab0de9fbd [use] Fix halant detection
Before, we were just checking the use_category().  This detects as
halant a ligature that had the halant as first glyph (as seen in
NotoSansBalinese.)  Change that to use the is_ligated() glyph prop
bit.  The font is forming this ligature in ccmp, which is before
the rphf / pref tests.  So we need to make sure the "ligated" bit
survives those tests.  Since those only check the "substituted" bit,
we now only clear that bit for them and "ligated" survives.

Fixes https://github.com/behdad/harfbuzz/issues/180
2015-12-17 11:59:15 +00:00
Behdad Esfahbod 1c6a057dd1 Add tests for previous commit 2015-11-26 18:48:30 -05:00
Behdad Esfahbod 9cc1ed4fa6 Do not allow recursiving to same position and same lookup
This is just to make it harder to be extremely slow.  There definitely
are ways still, just harder.  Oh well... how do we tame this problem
without solving halting problem?!

Fixes https://github.com/behdad/harfbuzz/issues/174
2015-11-19 12:39:09 -08:00
Behdad Esfahbod 7d75eee799 [fuzzing] Run fuzzing tests using hb-fuzzer as well 2015-11-19 12:15:05 -08:00
Behdad Esfahbod 85062e3b46 Add tests for previous two commits
To fully test what these are supposed to test, they should be run
against libharfbuzz-fuzzing.la instead of libharfbuzz.la, but for
now just record the files.
2015-11-18 23:09:13 -08:00
Behdad Esfahbod ec625f7dfb Try to fix gnome-continuous build fail 2015-11-18 16:37:59 -08:00
Behdad Esfahbod ff16ef3379 Enable building a bounded version of the library for fuzzing
test/fuzzing/hb-fuzzer links against libharfbuzz-fuzzing.so now.
2015-11-18 16:27:32 -08:00
Behdad Esfahbod 59821ab8b4 [arabic] Don't stretch over cased letters
Addresses
6e6f82b6f3 (commitcomment-14248516)
2015-11-06 16:27:44 -08:00
Behdad Esfahbod a6d7668a95 [fuzzing] Cap max buffer len at 128 2015-11-06 09:46:54 -08:00
Behdad Esfahbod 5a7eb5d4d8 [fuzzing] Add test case for OOM
From https://github.com/behdad/harfbuzz/issues/161
2015-11-06 00:01:24 -08:00
Behdad Esfahbod 4301703bdd Limit buffer max size growth
https://github.com/behdad/harfbuzz/issues/161
2015-11-05 23:44:59 -08:00
Behdad Esfahbod 19300183a6 [fuzzing] Add build system 2015-11-05 23:08:50 -08:00
Behdad Esfahbod 9c9ad214af [fuzzer] Add README
https://github.com/behdad/harfbuzz/issues/139#issuecomment-154202645
2015-11-05 22:50:52 -08:00
Behdad Esfahbod 6e6f82b6f3 Implement SYRIAC ABBREVIATION MARK with 'stch' feature
The feature is enabled for any character in the Arabic shaper.
We should experiment with using it for Arabic subtending marks.
Though, that has a directionality problem as well, since those
are used with digits...

Fixes https://github.com/behdad/harfbuzz/issues/141
2015-11-05 17:46:34 -08:00
Behdad Esfahbod da29b43794 Separate nil font-funcs from parent-peeking font-funcs
API change: all fonts created with hb_font_create() now inherit from
(ie have parent) hb_font_get_empty().
2015-11-04 20:22:44 -08:00
Behdad Esfahbod 04fd8517f8 Add tests for hyphen fallback
U+2011 is <noBreak> equivaent of U+2010, so we should do the fallback
for it.  Currently fails.
2015-11-04 17:39:26 -08:00
Behdad Esfahbod 550417117d [test] Drop hintings when subsetting fonts to record 2015-11-04 17:37:30 -08:00
Behdad Esfahbod 49ef630936 Adjust the width of various spaces if font does not cover them
See discussion here:
81ef4f407d

There's no way to disable this fallback, but I don't think it would
be needed.  Let's hope for the best!

Fixes https://github.com/behdad/harfbuzz/issues/153
2015-11-04 17:27:07 -08:00
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 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 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 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 55db94be2b Add test for previous commit 2015-10-13 00:33:59 -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 98c6fccc00 Add test for ee9b0b6cb5 2015-10-11 21:41:04 -04:00
Behdad Esfahbod 34379b49e6 Add test for previous fix 2015-10-09 12:34:02 -04:00