1 /* Categories of Unicode characters.
2 Copyright (C) 2002, 2006-2007, 2011-2021 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2002.
5 This program is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Lesser General Public License as published
7 by the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program. If not, see <https://www.gnu.org/licenses/>. */
23 static const char u_category_name
[30][3] =
25 "Lu", "Ll", "Lt", "Lm", "Lo", "Mn", "Mc", "Me", "Nd", "Nl",
26 "No", "Pc", "Pd", "Ps", "Pe", "Pi", "Pf", "Po", "Sm", "Sc",
27 "Sk", "So", "Zs", "Zl", "Zp", "Cc", "Cf", "Cs", "Co", "Cn"
31 uc_general_category_name (uc_general_category_t category
)
33 uint32_t bitmask
= category
.bitmask
;
34 /* bitmask should consist of a single bit. */
37 if ((bitmask
& (bitmask
- 1)) == 0)
40 /* Take log2 using a variant of Robert Harley's method.
41 Found by Bruno Haible 1996. */
43 static const char ord2_tab
[64] =
45 -1, 0, 1, 12, 2, 6, -1, 13, 3, -1, 7, -1, -1, -1, -1, 14,
46 10, 4, -1, -1, 8, -1, -1, 25, -1, -1, -1, -1, -1, 21, 27, 15,
47 31, 11, 5, -1, -1, -1, -1, -1, 9, -1, -1, 24, -1, -1, 20, 26,
48 30, -1, -1, -1, -1, 23, -1, 19, 29, -1, 22, 18, 28, 17, 16, -1
53 bit
= ord2_tab
[n
>> 26];
55 if (bit
< sizeof (u_category_name
) / sizeof (u_category_name
[0]))
56 return u_category_name
[bit
];
60 if (bitmask
== UC_CATEGORY_MASK_L
)
62 if (bitmask
== UC_CATEGORY_MASK_LC
)
64 if (bitmask
== UC_CATEGORY_MASK_M
)
66 if (bitmask
== UC_CATEGORY_MASK_N
)
68 if (bitmask
== UC_CATEGORY_MASK_P
)
70 if (bitmask
== UC_CATEGORY_MASK_S
)
72 if (bitmask
== UC_CATEGORY_MASK_Z
)
74 if (bitmask
== UC_CATEGORY_MASK_C
)