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Diffstat (limited to 'lib/libc/locale/collate.h')
| -rw-r--r-- | lib/libc/locale/collate.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/lib/libc/locale/collate.h b/lib/libc/locale/collate.h new file mode 100644 index 000000000000..64e0e6f2337d --- /dev/null +++ b/lib/libc/locale/collate.h @@ -0,0 +1,150 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright 2010 Nexenta Systems, Inc. All rights reserved. + * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> + * at Electronni Visti IA, Kiev, Ukraine. + * All rights reserved. + * + * Copyright (c) 2011 The FreeBSD Foundation + * + * Portions of this software were developed by David Chisnall + * under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _COLLATE_H_ +#define _COLLATE_H_ + +#include <sys/types.h> +#include <limits.h> +#include <wchar.h> +#include "xlocale_private.h" + +/* + * Work around buildworld bootstrapping from older systems whose limits.h + * sets COLL_WEIGHTS_MAX to 0. + */ +#if COLL_WEIGHTS_MAX == 0 +#undef COLL_WEIGHTS_MAX +#define COLL_WEIGHTS_MAX 10 +#endif + +#define COLLATE_STR_LEN 24 /* should be 64-bit multiple */ + +#define COLLATE_FMT_VERSION_LEN 12 +#define COLLATE_FMT_VERSION "BSD 1.0\n" + +#define COLLATE_MAX_PRIORITY (0x7fffffff) /* max signed value */ +#define COLLATE_SUBST_PRIORITY (0x40000000) /* bit indicates subst table */ + +#define DIRECTIVE_UNDEF 0x00 +#define DIRECTIVE_FORWARD 0x01 +#define DIRECTIVE_BACKWARD 0x02 +#define DIRECTIVE_POSITION 0x04 +#define DIRECTIVE_UNDEFINED 0x08 /* special last weight for UNDEFINED */ + +#define DIRECTIVE_DIRECTION_MASK (DIRECTIVE_FORWARD | DIRECTIVE_BACKWARD) + +#define IGNORE_EQUIV_CLASS 1 + +/* + * The collate file format is as follows: + * + * char fmt_version[COLLATE_FMT_VERSION_LEN]; // must be COLLATE_FMT_VERSION + * char def_version[XLOCALE_DEF_VERSION_LEN]; // NUL-terminated, may be empty + * collate_info_t info; // see below, includes padding + * collate_char_pri_t char_data[256]; // 8 bit char values + * collate_subst_t subst[*]; // 0 or more substitutions + * collate_chain_pri_t chains[*]; // 0 or more chains + * collate_large_pri_t large[*]; // extended char priorities + * + * Note that all structures must be 32-bit aligned, as each structure + * contains 32-bit member fields. The entire file is mmap'd, so its + * critical that alignment be observed. It is not generally safe to + * use any 64-bit values in the structures. + */ + +typedef struct collate_info { + uint8_t directive_count; + uint8_t directive[COLL_WEIGHTS_MAX]; + uint8_t chain_max_len; /* In padding */ + int32_t pri_count[COLL_WEIGHTS_MAX]; + int32_t flags; + int32_t chain_count; + int32_t large_count; + int32_t subst_count[COLL_WEIGHTS_MAX]; + int32_t undef_pri[COLL_WEIGHTS_MAX]; +} collate_info_t; + +typedef struct collate_char { + int32_t pri[COLL_WEIGHTS_MAX]; +} collate_char_t; + +typedef struct collate_chain { + wchar_t str[COLLATE_STR_LEN]; + int32_t pri[COLL_WEIGHTS_MAX]; +} collate_chain_t; + +typedef struct collate_large { + int32_t val; + collate_char_t pri; +} collate_large_t; + +typedef struct collate_subst { + int32_t key; + int32_t pri[COLLATE_STR_LEN]; +} collate_subst_t; + +struct xlocale_collate { + struct xlocale_component header; + int __collate_load_error; + char * map; + size_t maplen; + + collate_info_t *info; + collate_char_t *char_pri_table; + collate_large_t *large_pri_table; + collate_chain_t *chain_pri_table; + collate_subst_t *subst_table[COLL_WEIGHTS_MAX]; +}; + +__BEGIN_DECLS +size_t __collate_collating_symbol(wchar_t *, size_t, const char *, size_t, + mbstate_t *); +int __collate_equiv_class(const char *, size_t, mbstate_t *); +int __collate_equiv_value(locale_t, const wchar_t *, size_t); +size_t __collate_equiv_match(int, wchar_t *, size_t, wchar_t, const char *, + size_t, mbstate_t *, size_t *); +int __collate_load_tables(const char *); +void _collate_lookup(struct xlocale_collate *,const wchar_t *, int *, int *, + int, const int **); +int __collate_range_cmp(char, char); +int __wcollate_range_cmp(wchar_t, wchar_t); +size_t _collate_wxfrm(struct xlocale_collate *, const wchar_t *, wchar_t *, + size_t); +size_t _collate_sxfrm(struct xlocale_collate *, const wchar_t *, char *, + size_t); +__END_DECLS + +#endif /* !_COLLATE_H_ */ |