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[ot] Use switch for checking for blacklisted GDEF tables 

Faster / more compact code.
This commit is contained in:
Behdad Esfahbod 2018-08-02 23:04:42 -07:00
parent b5cdf5280d
commit 5e718a751e
1 changed files with 59 additions and 48 deletions
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107
src/hb-ot-layout.cc
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@ -70,97 +70,108 @@ _hb_ot_layout_create (hb_face_t *face)
layout->morx.init ();
{
/*
* The ugly business of blacklisting individual fonts' tables happen here!
/* The ugly business of blacklisting individual fonts' tables happen here!
* See this thread for why we finally had to bend in and do this:
* https://lists.freedesktop.org/archives/harfbuzz/2016-February/005489.html
*
* In certain versions of Times New Roman Italic and Bold Italic,
* ASCII double quotation mark U+0022 has wrong glyph class 3 (mark)
* in GDEF. Many versions of Tahoma have bad GDEF tables that
* incorrectly classify some spacing marks such as certain IPA
* symbols as glyph class 3. So do older versions of Microsoft
* Himalaya, and the version of Cantarell shipped by Ubuntu 16.04.
*
* Nuke the GDEF tables of to avoid unwanted width-zeroing.
*
* See https://bugzilla.mozilla.org/show_bug.cgi?id=1279925
* https://bugzilla.mozilla.org/show_bug.cgi?id=1279693
* https://bugzilla.mozilla.org/show_bug.cgi?id=1279875
*/
unsigned int gdef_len = layout->gdef_blob->length;
unsigned int gsub_len = layout->gsub_blob->length;
unsigned int gpos_len = layout->gpos_blob->length;
if (0
#define ENCODE(x,y,z) ((int64_t) (x) << 32 | (int64_t) (y) << 16 | (z))
switch ENCODE(gdef_len, gsub_len, gpos_len)
{
/* sha1sum:c5ee92f0bca4bfb7d06c4d03e8cf9f9cf75d2e8a Windows 7? timesi.ttf */
|| (442 == gdef_len && 42038 == gpos_len && 2874 == gsub_len)
case ENCODE (442, 2874, 42038):
/* sha1sum:37fc8c16a0894ab7b749e35579856c73c840867b Windows 7? timesbi.ttf */
|| (430 == gdef_len && 40662 == gpos_len && 2874 == gsub_len)
case ENCODE (430, 2874, 40662):
/* sha1sum:19fc45110ea6cd3cdd0a5faca256a3797a069a80 Windows 7 timesi.ttf */
|| (442 == gdef_len && 39116 == gpos_len && 2874 == gsub_len)
case ENCODE (442, 2874, 39116):
/* sha1sum:6d2d3c9ed5b7de87bc84eae0df95ee5232ecde26 Windows 7 timesbi.ttf */
|| (430 == gdef_len && 39374 == gpos_len && 2874 == gsub_len)
case ENCODE (430, 2874, 39374):
/* sha1sum:8583225a8b49667c077b3525333f84af08c6bcd8 OS X 10.11.3 Times New Roman Italic.ttf */
|| (490 == gdef_len && 41638 == gpos_len && 3046 == gsub_len)
case ENCODE (490, 3046, 41638):
/* sha1sum:ec0f5a8751845355b7c3271d11f9918a966cb8c9 OS X 10.11.3 Times New Roman Bold Italic.ttf */
|| (478 == gdef_len && 41902 == gpos_len && 3046 == gsub_len)
case ENCODE (478, 3046, 41902):
/* sha1sum:96eda93f7d33e79962451c6c39a6b51ee893ce8c tahoma.ttf from Windows 8 */
|| (898 == gdef_len && 46470 == gpos_len && 12554 == gsub_len)
case ENCODE (898, 12554, 46470):
/* sha1sum:20928dc06014e0cd120b6fc942d0c3b1a46ac2bc tahomabd.ttf from Windows 8 */
|| (910 == gdef_len && 47732 == gpos_len && 12566 == gsub_len)
case ENCODE (910, 12566, 47732):
/* sha1sum:4f95b7e4878f60fa3a39ca269618dfde9721a79e tahoma.ttf from Windows 8.1 */
|| (928 == gdef_len && 59332 == gpos_len && 23298 == gsub_len)
case ENCODE (928, 23298, 59332):
/* sha1sum:6d400781948517c3c0441ba42acb309584b73033 tahomabd.ttf from Windows 8.1 */
|| (940 == gdef_len && 60732 == gpos_len && 23310 == gsub_len)
case ENCODE (940, 23310, 60732):
/* tahoma.ttf v6.04 from Windows 8.1 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
|| (964 == gdef_len && 60072 == gpos_len && 23836 == gsub_len)
case ENCODE (964, 23836, 60072):
/* tahomabd.ttf v6.04 from Windows 8.1 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
|| (976 == gdef_len && 61456 == gpos_len && 23832 == gsub_len)
case ENCODE (976, 23832, 61456):
/* sha1sum:e55fa2dfe957a9f7ec26be516a0e30b0c925f846 tahoma.ttf from Windows 10 */
|| (994 == gdef_len && 60336 == gpos_len && 24474 == gsub_len)
case ENCODE (994, 24474, 60336):
/* sha1sum:7199385abb4c2cc81c83a151a7599b6368e92343 tahomabd.ttf from Windows 10 */
|| (1006 == gdef_len && 61740 == gpos_len && 24470 == gsub_len)
case ENCODE (1006, 24470, 61740):
/* tahoma.ttf v6.91 from Windows 10 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
|| (1006 == gdef_len && 61346 == gpos_len && 24576 == gsub_len)
case ENCODE (1006, 24576, 61346):
/* tahomabd.ttf v6.91 from Windows 10 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
|| (1018 == gdef_len && 62828 == gpos_len && 24572 == gsub_len)
case ENCODE (1018, 24572, 62828):
/* sha1sum:b9c84d820c49850d3d27ec498be93955b82772b5 tahoma.ttf from Windows 10 AU */
|| (1006 == gdef_len && 61352 == gpos_len && 24576 == gsub_len)
case ENCODE (1006, 24576, 61352):
/* sha1sum:2bdfaab28174bdadd2f3d4200a30a7ae31db79d2 tahomabd.ttf from Windows 10 AU */
|| (1018 == gdef_len && 62834 == gpos_len && 24572 == gsub_len)
case ENCODE (1018, 24572, 62834):
/* sha1sum:b0d36cf5a2fbe746a3dd277bffc6756a820807a7 Tahoma.ttf from Mac OS X 10.9 */
|| (832 == gdef_len && 47162 == gpos_len && 7324 == gsub_len)
case ENCODE (832, 7324, 47162):
/* sha1sum:12fc4538e84d461771b30c18b5eb6bd434e30fba Tahoma Bold.ttf from Mac OS X 10.9 */
|| (844 == gdef_len && 45474 == gpos_len && 7302 == gsub_len)
case ENCODE (844, 7302, 45474):
/* sha1sum:eb8afadd28e9cf963e886b23a30b44ab4fd83acc himalaya.ttf from Windows 7 */
|| (180 == gdef_len && 7254 == gpos_len && 13054 == gsub_len)
case ENCODE (180, 13054, 7254):
/* sha1sum:73da7f025b238a3f737aa1fde22577a6370f77b0 himalaya.ttf from Windows 8 */
|| (192 == gdef_len && 7254 == gpos_len && 12638 == gsub_len)
case ENCODE (192, 12638, 7254):
/* sha1sum:6e80fd1c0b059bbee49272401583160dc1e6a427 himalaya.ttf from Windows 8.1 */
|| (192 == gdef_len && 7254 == gpos_len && 12690 == gsub_len)
case ENCODE (192, 12690, 7254):
/* 8d9267aea9cd2c852ecfb9f12a6e834bfaeafe44 cantarell-fonts-0.0.21/otf/Cantarell-Regular.otf */
/* 983988ff7b47439ab79aeaf9a45bd4a2c5b9d371 cantarell-fonts-0.0.21/otf/Cantarell-Oblique.otf */
|| (188 == gdef_len && 3852 == gpos_len && 248 == gsub_len)
case ENCODE (188, 248, 3852):
/* 2c0c90c6f6087ffbfea76589c93113a9cbb0e75f cantarell-fonts-0.0.21/otf/Cantarell-Bold.otf */
/* 55461f5b853c6da88069ffcdf7f4dd3f8d7e3e6b cantarell-fonts-0.0.21/otf/Cantarell-Bold-Oblique.otf */
|| (188 == gdef_len && 3426 == gpos_len && 264 == gsub_len)
case ENCODE (188, 264, 3426):
/* d125afa82a77a6475ac0e74e7c207914af84b37a padauk-2.80/Padauk.ttf RHEL 7.2 */
|| (1058 == gdef_len && 11818 == gpos_len && 47032 == gsub_len)
case ENCODE (1058, 47032, 11818):
/* 0f7b80437227b90a577cc078c0216160ae61b031 padauk-2.80/Padauk-Bold.ttf RHEL 7.2*/
|| (1046 == gdef_len && 12600 == gpos_len && 47030 == gsub_len)
case ENCODE (1046, 47030, 12600):
/* d3dde9aa0a6b7f8f6a89ef1002e9aaa11b882290 padauk-2.80/Padauk.ttf Ubuntu 16.04 */
|| (1058 == gdef_len && 16770 == gpos_len && 71796 == gsub_len)
case ENCODE (1058, 71796, 16770):
/* 5f3c98ccccae8a953be2d122c1b3a77fd805093f padauk-2.80/Padauk-Bold.ttf Ubuntu 16.04 */
|| (1046 == gdef_len && 17862 == gpos_len && 71790 == gsub_len)
case ENCODE (1046, 71790, 17862):
/* 6c93b63b64e8b2c93f5e824e78caca555dc887c7 padauk-2.80/Padauk-book.ttf */
|| (1046 == gdef_len && 17112 == gpos_len && 71788 == gsub_len)
case ENCODE (1046, 71788, 17112):
/* d89b1664058359b8ec82e35d3531931125991fb9 padauk-2.80/Padauk-bookbold.ttf */
|| (1058 == gdef_len && 17514 == gpos_len && 71794 == gsub_len)
case ENCODE (1058, 71794, 17514):
/* 824cfd193aaf6234b2b4dc0cf3c6ef576c0d00ef padauk-3.0/Padauk-book.ttf */
|| (1330 == gdef_len && 57938 == gpos_len && 109904 == gsub_len)
case ENCODE (1330, 109904, 57938):
/* 91fcc10cf15e012d27571e075b3b4dfe31754a8a padauk-3.0/Padauk-bookbold.ttf */
|| (1330 == gdef_len && 58972 == gpos_len && 109904 == gsub_len)
case ENCODE (1330, 109904, 58972):
/* sha1sum: c26e41d567ed821bed997e937bc0c41435689e85 Padauk.ttf
* "Padauk Regular" "Version 2.5", see https://crbug.com/681813 */
|| (1004 == gdef_len && 14836 == gpos_len && 59092 == gsub_len)
)
{
/* Many versions of Tahoma have bad GDEF tables that incorrectly classify some spacing marks
* such as certain IPA symbols as glyph class 3. So do older versions of Microsoft Himalaya,
* and the version of Cantarell shipped by Ubuntu 16.04.
* Nuke the GDEF tables of these fonts to avoid unwanted width-zeroing.
* See https://bugzilla.mozilla.org/show_bug.cgi?id=1279925
* https://bugzilla.mozilla.org/show_bug.cgi?id=1279693
* https://bugzilla.mozilla.org/show_bug.cgi?id=1279875
*/
layout->gdef = &Null(OT::GDEF);
case ENCODE (1004, 59092, 14836):
{
layout->gdef = &Null(OT::GDEF);
break;
}
#undef ENCODE
default:
break;
}
}