1 /* Special casing table. 2 Copyright (C) 2009-2021 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2009. 4 5 This file is free software. 6 It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+". 7 You can redistribute it and/or modify it under either 8 - the terms of the GNU Lesser General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version, or 11 - the terms of the GNU General Public License as published by the 12 Free Software Foundation; either version 2, or (at your option) 13 any later version, or 14 - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+". 15 16 This file is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 Lesser General Public License and the GNU General Public License 20 for more details. 21 22 You should have received a copy of the GNU Lesser General Public 23 License and of the GNU General Public License along with this 24 program. If not, see <https://www.gnu.org/licenses/>. */ 25 26 #include <stddef.h> 27 28 /* A special casing context. 29 A context is negated through x -> -x. */ 30 enum 31 { 32 SCC_ALWAYS = 0, 33 SCC_FINAL_SIGMA = 1, 34 SCC_AFTER_SOFT_DOTTED = 2, 35 SCC_MORE_ABOVE = 3, 36 SCC_BEFORE_DOT = 4, 37 SCC_AFTER_I = 5 38 }; 39 40 struct special_casing_rule 41 { 42 /* The first two bytes are the code, in big-endian order. The third byte 43 only distinguishes different rules pertaining to the same code. */ 44 /*unsigned*/ char code[3]; 45 46 /* True when this rule is not the last one for the given code. */ 47 /*bool*/ unsigned int has_next : 1; 48 49 /* Context. */ 50 signed int context : 7; 51 52 /* Language, or an empty string. */ 53 char language[2]; 54 55 /* Mapping to upper case. Between 0 and 3 characters. Filled with 0s. */ 56 unsigned short upper[3]; 57 58 /* Mapping to lower case. Between 0 and 3 characters. Filled with 0s. */ 59 unsigned short lower[3]; 60 61 /* Mapping to title case. Between 0 and 3 characters. Filled with 0s. */ 62 unsigned short title[3]; 63 64 /* Casefolding mapping. Between 0 and 3 characters. Filled with 0s. */ 65 unsigned short casefold[3]; 66 }; 67 68 extern const struct special_casing_rule * 69 gl_unicase_special_lookup (const char *str, size_t len);