2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright 2013 Garrett D'Amore <garrett@damore.org>
5 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
6 * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
8 * The Regents of the University of California. All rights reserved.
10 * This code is derived from software contributed to Berkeley by
11 * Paul Borman at Krystal Technologies.
13 * Copyright (c) 2011 The FreeBSD Foundation
15 * Portions of this software were developed by David Chisnall
16 * under sponsorship from the FreeBSD Foundation.
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 * 3. Neither the name of the University nor the names of its contributors
27 * may be used to endorse or promote products derived from this software
28 * without specific prior written permission.
30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 #include <sys/param.h>
52 extern int __mb_sb_limit;
54 static size_t _EUC_mbrtowc_impl(wchar_t * __restrict, const char * __restrict,
55 size_t, mbstate_t * __restrict, uint8_t, uint8_t, uint8_t, uint8_t);
56 static size_t _EUC_wcrtomb_impl(char * __restrict, wchar_t,
57 mbstate_t * __restrict, uint8_t, uint8_t, uint8_t, uint8_t);
59 static size_t _EUC_CN_mbrtowc(wchar_t * __restrict, const char * __restrict,
60 size_t, mbstate_t * __restrict);
61 static size_t _EUC_JP_mbrtowc(wchar_t * __restrict, const char * __restrict,
62 size_t, mbstate_t * __restrict);
63 static size_t _EUC_KR_mbrtowc(wchar_t * __restrict, const char * __restrict,
64 size_t, mbstate_t * __restrict);
65 static size_t _EUC_TW_mbrtowc(wchar_t * __restrict, const char * __restrict,
66 size_t, mbstate_t * __restrict);
68 static size_t _EUC_CN_wcrtomb(char * __restrict, wchar_t,
69 mbstate_t * __restrict);
70 static size_t _EUC_JP_wcrtomb(char * __restrict, wchar_t,
71 mbstate_t * __restrict);
72 static size_t _EUC_KR_wcrtomb(char * __restrict, wchar_t,
73 mbstate_t * __restrict);
74 static size_t _EUC_TW_wcrtomb(char * __restrict, wchar_t,
75 mbstate_t * __restrict);
77 static size_t _EUC_CN_mbsnrtowcs(wchar_t * __restrict,
78 const char ** __restrict, size_t, size_t,
79 mbstate_t * __restrict);
80 static size_t _EUC_JP_mbsnrtowcs(wchar_t * __restrict,
81 const char ** __restrict, size_t, size_t,
82 mbstate_t * __restrict);
83 static size_t _EUC_KR_mbsnrtowcs(wchar_t * __restrict,
84 const char ** __restrict, size_t, size_t,
85 mbstate_t * __restrict);
86 static size_t _EUC_TW_mbsnrtowcs(wchar_t * __restrict,
87 const char ** __restrict, size_t, size_t,
88 mbstate_t * __restrict);
90 static size_t _EUC_CN_wcsnrtombs(char * __restrict,
91 const wchar_t ** __restrict, size_t, size_t,
92 mbstate_t * __restrict);
93 static size_t _EUC_JP_wcsnrtombs(char * __restrict,
94 const wchar_t ** __restrict, size_t, size_t,
95 mbstate_t * __restrict);
96 static size_t _EUC_KR_wcsnrtombs(char * __restrict,
97 const wchar_t ** __restrict, size_t, size_t,
98 mbstate_t * __restrict);
99 static size_t _EUC_TW_wcsnrtombs(char * __restrict,
100 const wchar_t ** __restrict, size_t, size_t,
101 mbstate_t * __restrict);
103 static int _EUC_mbsinit(const mbstate_t *);
112 _EUC_mbsinit(const mbstate_t *ps)
115 return (ps == NULL || ((const _EucState *)ps)->want == 0);
119 * EUC-CN uses CS0, CS1 and CS2 (4 bytes).
122 _EUC_CN_init(struct xlocale_ctype *l, _RuneLocale *rl)
124 l->__mbrtowc = _EUC_CN_mbrtowc;
125 l->__wcrtomb = _EUC_CN_wcrtomb;
126 l->__mbsnrtowcs = _EUC_CN_mbsnrtowcs;
127 l->__wcsnrtombs = _EUC_CN_wcsnrtombs;
128 l->__mbsinit = _EUC_mbsinit;
132 l->__mb_sb_limit = 128;
137 _EUC_CN_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
138 size_t n, mbstate_t * __restrict ps)
140 return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
144 _EUC_CN_mbsnrtowcs(wchar_t * __restrict dst,
145 const char ** __restrict src,
146 size_t nms, size_t len, mbstate_t * __restrict ps)
148 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_CN_mbrtowc));
152 _EUC_CN_wcrtomb(char * __restrict s, wchar_t wc,
153 mbstate_t * __restrict ps)
155 return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
159 _EUC_CN_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
160 size_t nwc, size_t len, mbstate_t * __restrict ps)
162 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_CN_wcrtomb));
166 * EUC-KR uses only CS0 and CS1.
169 _EUC_KR_init(struct xlocale_ctype *l, _RuneLocale *rl)
171 l->__mbrtowc = _EUC_KR_mbrtowc;
172 l->__wcrtomb = _EUC_KR_wcrtomb;
173 l->__mbsnrtowcs = _EUC_KR_mbsnrtowcs;
174 l->__wcsnrtombs = _EUC_KR_wcsnrtombs;
175 l->__mbsinit = _EUC_mbsinit;
179 l->__mb_sb_limit = 128;
184 _EUC_KR_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
185 size_t n, mbstate_t * __restrict ps)
187 return (_EUC_mbrtowc_impl(pwc, s, n, ps, 0, 0, 0, 0));
191 _EUC_KR_mbsnrtowcs(wchar_t * __restrict dst,
192 const char ** __restrict src,
193 size_t nms, size_t len, mbstate_t * __restrict ps)
195 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_KR_mbrtowc));
199 _EUC_KR_wcrtomb(char * __restrict s, wchar_t wc,
200 mbstate_t * __restrict ps)
202 return (_EUC_wcrtomb_impl(s, wc, ps, 0, 0, 0, 0));
206 _EUC_KR_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
207 size_t nwc, size_t len, mbstate_t * __restrict ps)
209 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_KR_wcrtomb));
213 * EUC-JP uses CS0, CS1, CS2, and CS3.
216 _EUC_JP_init(struct xlocale_ctype *l, _RuneLocale *rl)
218 l->__mbrtowc = _EUC_JP_mbrtowc;
219 l->__wcrtomb = _EUC_JP_wcrtomb;
220 l->__mbsnrtowcs = _EUC_JP_mbsnrtowcs;
221 l->__wcsnrtombs = _EUC_JP_wcsnrtombs;
222 l->__mbsinit = _EUC_mbsinit;
226 l->__mb_sb_limit = 128;
231 _EUC_JP_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
232 size_t n, mbstate_t * __restrict ps)
234 return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 2, SS3, 3));
238 _EUC_JP_mbsnrtowcs(wchar_t * __restrict dst,
239 const char ** __restrict src,
240 size_t nms, size_t len, mbstate_t * __restrict ps)
242 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_JP_mbrtowc));
246 _EUC_JP_wcrtomb(char * __restrict s, wchar_t wc,
247 mbstate_t * __restrict ps)
249 return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 2, SS3, 3));
253 _EUC_JP_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
254 size_t nwc, size_t len, mbstate_t * __restrict ps)
256 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_JP_wcrtomb));
260 * EUC-TW uses CS0, CS1, and CS2.
263 _EUC_TW_init(struct xlocale_ctype *l, _RuneLocale *rl)
265 l->__mbrtowc = _EUC_TW_mbrtowc;
266 l->__wcrtomb = _EUC_TW_wcrtomb;
267 l->__mbsnrtowcs = _EUC_TW_mbsnrtowcs;
268 l->__wcsnrtombs = _EUC_TW_wcsnrtombs;
269 l->__mbsinit = _EUC_mbsinit;
273 l->__mb_sb_limit = 128;
278 _EUC_TW_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
279 size_t n, mbstate_t * __restrict ps)
281 return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
285 _EUC_TW_mbsnrtowcs(wchar_t * __restrict dst,
286 const char ** __restrict src,
287 size_t nms, size_t len, mbstate_t * __restrict ps)
289 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_TW_mbrtowc));
293 _EUC_TW_wcrtomb(char * __restrict s, wchar_t wc,
294 mbstate_t * __restrict ps)
296 return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
300 _EUC_TW_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
301 size_t nwc, size_t len, mbstate_t * __restrict ps)
303 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_TW_wcrtomb));
311 _EUC_mbrtowc_impl(wchar_t * __restrict pwc, const char * __restrict s,
312 size_t n, mbstate_t * __restrict ps,
313 uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
318 unsigned char ch, chs;
320 es = (_EucState *)ps;
322 if (es->want < 0 || es->want > MB_CUR_MAX) {
334 /* Incomplete multibyte sequence */
338 /* Fast path for plain ASCII (CS0) */
339 if (((ch = (unsigned char)*s) & 0x80) == 0) {
342 return (ch != '\0' ? 1 : 0);
348 } else if (ch == cs2) {
350 } else if (ch == cs3) {
365 for (i = 0; i < MIN(want, n); i++) {
372 /* Incomplete multibyte sequence */
381 return (wc == L'\0' ? 0 : want);
385 _EUC_wcrtomb_impl(char * __restrict s, wchar_t wc,
386 mbstate_t * __restrict ps,
387 uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
393 es = (_EucState *)ps;
401 /* Reset to initial shift state (no-op) */
404 if ((wc & ~0x7f) == 0) {
405 /* Fast path for plain ASCII (CS0) */
410 /* Determine the "length" */
411 if ((unsigned)wc > 0xffffff) {
413 } else if ((unsigned)wc > 0xffff) {
415 } else if ((unsigned)wc > 0xff) {
421 if (len > MB_CUR_MAX) {
426 /* This first check excludes CS1, which is implicitly valid. */
427 if ((wc < 0xa100) || (wc > 0xffff)) {
428 /* Check for valid CS2 or CS3 */
429 nm = (wc >> ((len - 1) * 8));
431 if (len != cs2width) {
435 } else if (nm == cs3) {
436 if (len != cs3width) {
446 /* Stash the bytes, least significant last */
447 for (i = len - 1; i >= 0; i--) {