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author | Manuel A. Fernandez Montecelo <manuel.montezelo@gmail.com> | 2016-05-27 14:35:16 +0100 |
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committer | Manuel A. Fernandez Montecelo <manuel.montezelo@gmail.com> | 2016-05-27 14:35:16 +0100 |
commit | 3590c846d4c2febbc05b4ad6b14a06edc549e453 (patch) | |
tree | e5d38581c2f36e1cca02efedd2d85044d77f76f9 /lib/unictype/joiningtype_of.c | |
parent | a9a31b1de5776a3b08a82101a4fa711294f0dd1d (diff) |
Imported Upstream version 0.9.6+really0.9.6upstream/0.9.6+really0.9.6
Diffstat (limited to 'lib/unictype/joiningtype_of.c')
-rw-r--r-- | lib/unictype/joiningtype_of.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/lib/unictype/joiningtype_of.c b/lib/unictype/joiningtype_of.c new file mode 100644 index 0000000..796ffcd --- /dev/null +++ b/lib/unictype/joiningtype_of.c @@ -0,0 +1,54 @@ +/* Arabic joining type of Unicode characters. + Copyright (C) 2011-2015 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2011. + + This program is free software: you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +/* Specification. */ +#include "unictype.h" + +/* Define u_joining_type table. */ +#include "joiningtype_of.h" + +int +uc_joining_type (ucs4_t uc) +{ + unsigned int index1 = uc >> joining_type_header_0; + if (index1 < joining_type_header_1) + { + int lookup1 = u_joining_type.level1[index1]; + if (lookup1 >= 0) + { + unsigned int index2 = (uc >> joining_type_header_2) & joining_type_header_3; + int lookup2 = u_joining_type.level2[lookup1 + index2]; + if (lookup2 >= 0) + { + unsigned int index3 = (uc & joining_type_header_4) + lookup2; + /* level3 contains 4-bit values. */ + unsigned int lookup3 = + (u_joining_type.level3[index3>>1] >> ((index3 % 2) * 4)) + & 0x0f; + + if (lookup3 != 0x0f) + return lookup3; + } + } + } + if (uc_is_general_category_withtable + (uc, UC_CATEGORY_MASK_Mn | UC_CATEGORY_MASK_Me | UC_CATEGORY_MASK_Cf)) + return UC_JOINING_TYPE_T; + return UC_JOINING_TYPE_U; +} |