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/* Special casing table.
Copyright (C) 2009-2024 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2009.
This file is free software.
It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
You can redistribute it and/or modify it under either
- the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3, or (at your
option) any later version, or
- the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option)
any later version, or
- the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
This file 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 and the GNU General Public License
for more details.
You should have received a copy of the GNU Lesser General Public
License and of the GNU General Public License along with this
program. If not, see <https://www.gnu.org/licenses/>. */
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/* A special casing context.
A context is negated through x -> -x. */
enum
{
SCC_ALWAYS = 0,
SCC_FINAL_SIGMA = 1,
SCC_AFTER_SOFT_DOTTED = 2,
SCC_MORE_ABOVE = 3,
SCC_BEFORE_DOT = 4,
SCC_AFTER_I = 5
};
struct special_casing_rule
{
/* The first two bytes are the code, in big-endian order. The third byte
only distinguishes different rules pertaining to the same code. */
/*unsigned*/ char code[3];
/* True when this rule is not the last one for the given code. */
/*bool*/ unsigned int has_next : 1;
/* Context. */
signed int context : 7;
/* Language, or an empty string. */
char language[2];
/* Mapping to upper case. Between 0 and 3 characters. Filled with 0s. */
unsigned short upper[3];
/* Mapping to lower case. Between 0 and 3 characters. Filled with 0s. */
unsigned short lower[3];
/* Mapping to title case. Between 0 and 3 characters. Filled with 0s. */
unsigned short title[3];
/* Casefolding mapping. Between 0 and 3 characters. Filled with 0s. */
unsigned short casefold[3];
};
extern const struct special_casing_rule *
gl_unicase_special_lookup (const char *str, size_t len);
#ifdef __cplusplus
}
#endif
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