2 * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Paul Borman at Krystal Technologies.
9 * Copyright (c) 2011 The FreeBSD Foundation
10 * All rights reserved.
11 * Portions of this software were developed by David Chisnall
12 * under sponsorship from the FreeBSD Foundation.
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15 * modification, are permitted provided that the following conditions
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24 * This product includes software developed by the University of
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42 * @(#)big5.c 8.1 (Berkeley) 6/4/93
43 * $FreeBSD: head/lib/libc/locale/big5.c 227753 2011-11-20 14:45:42Z theraven $
47 #include <sys/types.h>
55 extern int __mb_sb_limit;
57 static size_t _BIG5_mbrtowc(wchar_t * __restrict, const char * __restrict,
58 size_t, mbstate_t * __restrict);
59 static int _BIG5_mbsinit(const mbstate_t *);
60 static size_t _BIG5_wcrtomb(char * __restrict, wchar_t,
61 mbstate_t * __restrict);
68 _BIG5_init(struct xlocale_ctype *l, _RuneLocale *rl)
71 l->__mbrtowc = _BIG5_mbrtowc;
72 l->__wcrtomb = _BIG5_wcrtomb;
73 l->__mbsinit = _BIG5_mbsinit;
76 l->__mb_sb_limit = 128;
81 _BIG5_mbsinit(const mbstate_t *ps)
84 return (ps == NULL || ((const _BIG5State *)ps)->ch == 0);
92 return ((c >= 0xa1 && c <= 0xfe) ? 2 : 1);
96 _BIG5_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
97 mbstate_t * __restrict ps)
103 bs = (_BIG5State *)ps;
105 if ((bs->ch & ~0xFF) != 0) {
106 /* Bad conversion state. */
118 /* Incomplete multibyte sequence */
126 wc = (bs->ch << 8) | (*s & 0xFF);
133 len = (size_t)_big5_check(*s);
137 /* Incomplete multibyte sequence */
145 wc = (wc << 8) | (*s++ & 0xff);
152 return (wc == L'\0' ? 0 : 1);
157 _BIG5_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
161 bs = (_BIG5State *)ps;
169 /* Reset to initial shift state (no-op) */
172 *s++ = (wc >> 8) & 0xff;