2 * Copyright 2013 Garrett D'Amore <garrett@damore.org>
3 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
4 * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
6 * The Regents of the University of California. All rights reserved.
8 * This code is derived from software contributed to Berkeley by
9 * Paul Borman at Krystal Technologies.
11 * Copyright (c) 2011 The FreeBSD Foundation
12 * All rights reserved.
13 * Portions of this software were developed by David Chisnall
14 * under sponsorship from the FreeBSD Foundation.
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 * 3. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 #if defined(LIBC_SCCS) && !defined(lint)
42 static char sccsid[] = "@(#)euc.c 8.1 (Berkeley) 6/4/93";
43 #endif /* LIBC_SCCS and not lint */
44 #include <sys/param.h>
45 __FBSDID("$FreeBSD$");
55 extern int __mb_sb_limit;
57 static size_t _EUC_mbrtowc_impl(wchar_t * __restrict, const char * __restrict,
58 size_t, mbstate_t * __restrict, uint8_t, uint8_t, uint8_t, uint8_t);
59 static size_t _EUC_wcrtomb_impl(char * __restrict, wchar_t,
60 mbstate_t * __restrict, uint8_t, uint8_t, uint8_t, uint8_t);
62 static size_t _EUC_CN_mbrtowc(wchar_t * __restrict, const char * __restrict,
63 size_t, mbstate_t * __restrict);
64 static size_t _EUC_JP_mbrtowc(wchar_t * __restrict, const char * __restrict,
65 size_t, mbstate_t * __restrict);
66 static size_t _EUC_KR_mbrtowc(wchar_t * __restrict, const char * __restrict,
67 size_t, mbstate_t * __restrict);
68 static size_t _EUC_TW_mbrtowc(wchar_t * __restrict, const char * __restrict,
69 size_t, mbstate_t * __restrict);
71 static size_t _EUC_CN_wcrtomb(char * __restrict, wchar_t,
72 mbstate_t * __restrict);
73 static size_t _EUC_JP_wcrtomb(char * __restrict, wchar_t,
74 mbstate_t * __restrict);
75 static size_t _EUC_KR_wcrtomb(char * __restrict, wchar_t,
76 mbstate_t * __restrict);
77 static size_t _EUC_TW_wcrtomb(char * __restrict, wchar_t,
78 mbstate_t * __restrict);
80 static size_t _EUC_CN_mbsnrtowcs(wchar_t * __restrict,
81 const char ** __restrict, size_t, size_t,
82 mbstate_t * __restrict);
83 static size_t _EUC_JP_mbsnrtowcs(wchar_t * __restrict,
84 const char ** __restrict, size_t, size_t,
85 mbstate_t * __restrict);
86 static size_t _EUC_KR_mbsnrtowcs(wchar_t * __restrict,
87 const char ** __restrict, size_t, size_t,
88 mbstate_t * __restrict);
89 static size_t _EUC_TW_mbsnrtowcs(wchar_t * __restrict,
90 const char ** __restrict, size_t, size_t,
91 mbstate_t * __restrict);
93 static size_t _EUC_CN_wcsnrtombs(char * __restrict,
94 const wchar_t ** __restrict, size_t, size_t,
95 mbstate_t * __restrict);
96 static size_t _EUC_JP_wcsnrtombs(char * __restrict,
97 const wchar_t ** __restrict, size_t, size_t,
98 mbstate_t * __restrict);
99 static size_t _EUC_KR_wcsnrtombs(char * __restrict,
100 const wchar_t ** __restrict, size_t, size_t,
101 mbstate_t * __restrict);
102 static size_t _EUC_TW_wcsnrtombs(char * __restrict,
103 const wchar_t ** __restrict, size_t, size_t,
104 mbstate_t * __restrict);
106 static int _EUC_mbsinit(const mbstate_t *);
115 _EUC_mbsinit(const mbstate_t *ps)
118 return (ps == NULL || ((const _EucState *)ps)->want == 0);
122 * EUC-CN uses CS0, CS1 and CS2 (4 bytes).
125 _EUC_CN_init(struct xlocale_ctype *l, _RuneLocale *rl)
127 l->__mbrtowc = _EUC_CN_mbrtowc;
128 l->__wcrtomb = _EUC_CN_wcrtomb;
129 l->__mbsnrtowcs = _EUC_CN_mbsnrtowcs;
130 l->__wcsnrtombs = _EUC_CN_wcsnrtombs;
131 l->__mbsinit = _EUC_mbsinit;
135 l->__mb_sb_limit = 128;
140 _EUC_CN_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
141 size_t n, mbstate_t * __restrict ps)
143 return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
147 _EUC_CN_mbsnrtowcs(wchar_t * __restrict dst,
148 const char ** __restrict src,
149 size_t nms, size_t len, mbstate_t * __restrict ps)
151 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_CN_mbrtowc));
155 _EUC_CN_wcrtomb(char * __restrict s, wchar_t wc,
156 mbstate_t * __restrict ps)
158 return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
162 _EUC_CN_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
163 size_t nwc, size_t len, mbstate_t * __restrict ps)
165 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_CN_wcrtomb));
169 * EUC-KR uses only CS0 and CS1.
172 _EUC_KR_init(struct xlocale_ctype *l, _RuneLocale *rl)
174 l->__mbrtowc = _EUC_KR_mbrtowc;
175 l->__wcrtomb = _EUC_KR_wcrtomb;
176 l->__mbsnrtowcs = _EUC_KR_mbsnrtowcs;
177 l->__wcsnrtombs = _EUC_KR_wcsnrtombs;
178 l->__mbsinit = _EUC_mbsinit;
182 l->__mb_sb_limit = 128;
187 _EUC_KR_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
188 size_t n, mbstate_t * __restrict ps)
190 return (_EUC_mbrtowc_impl(pwc, s, n, ps, 0, 0, 0, 0));
194 _EUC_KR_mbsnrtowcs(wchar_t * __restrict dst,
195 const char ** __restrict src,
196 size_t nms, size_t len, mbstate_t * __restrict ps)
198 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_KR_mbrtowc));
202 _EUC_KR_wcrtomb(char * __restrict s, wchar_t wc,
203 mbstate_t * __restrict ps)
205 return (_EUC_wcrtomb_impl(s, wc, ps, 0, 0, 0, 0));
209 _EUC_KR_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
210 size_t nwc, size_t len, mbstate_t * __restrict ps)
212 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_KR_wcrtomb));
216 * EUC-JP uses CS0, CS1, CS2, and CS3.
219 _EUC_JP_init(struct xlocale_ctype *l, _RuneLocale *rl)
221 l->__mbrtowc = _EUC_JP_mbrtowc;
222 l->__wcrtomb = _EUC_JP_wcrtomb;
223 l->__mbsnrtowcs = _EUC_JP_mbsnrtowcs;
224 l->__wcsnrtombs = _EUC_JP_wcsnrtombs;
225 l->__mbsinit = _EUC_mbsinit;
229 l->__mb_sb_limit = 128;
234 _EUC_JP_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
235 size_t n, mbstate_t * __restrict ps)
237 return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 2, SS3, 3));
241 _EUC_JP_mbsnrtowcs(wchar_t * __restrict dst,
242 const char ** __restrict src,
243 size_t nms, size_t len, mbstate_t * __restrict ps)
245 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_JP_mbrtowc));
249 _EUC_JP_wcrtomb(char * __restrict s, wchar_t wc,
250 mbstate_t * __restrict ps)
252 return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 2, SS3, 3));
256 _EUC_JP_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
257 size_t nwc, size_t len, mbstate_t * __restrict ps)
259 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_JP_wcrtomb));
263 * EUC-TW uses CS0, CS1, and CS2.
266 _EUC_TW_init(struct xlocale_ctype *l, _RuneLocale *rl)
268 l->__mbrtowc = _EUC_TW_mbrtowc;
269 l->__wcrtomb = _EUC_TW_wcrtomb;
270 l->__mbsnrtowcs = _EUC_TW_mbsnrtowcs;
271 l->__wcsnrtombs = _EUC_TW_wcsnrtombs;
272 l->__mbsinit = _EUC_mbsinit;
276 l->__mb_sb_limit = 128;
281 _EUC_TW_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
282 size_t n, mbstate_t * __restrict ps)
284 return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
288 _EUC_TW_mbsnrtowcs(wchar_t * __restrict dst,
289 const char ** __restrict src,
290 size_t nms, size_t len, mbstate_t * __restrict ps)
292 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_TW_mbrtowc));
296 _EUC_TW_wcrtomb(char * __restrict s, wchar_t wc,
297 mbstate_t * __restrict ps)
299 return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
303 _EUC_TW_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
304 size_t nwc, size_t len, mbstate_t * __restrict ps)
306 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_TW_wcrtomb));
314 _EUC_mbrtowc_impl(wchar_t * __restrict pwc, const char * __restrict s,
315 size_t n, mbstate_t * __restrict ps,
316 uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
321 unsigned char ch, chs;
323 es = (_EucState *)ps;
325 if (es->want < 0 || es->want > MB_CUR_MAX) {
337 /* Incomplete multibyte sequence */
341 /* Fast path for plain ASCII (CS0) */
342 if (((ch = (unsigned char)*s) & 0x80) == 0) {
345 return (ch != '\0' ? 1 : 0);
351 } else if (ch == cs2) {
353 } else if (ch == cs3) {
368 for (i = 0; i < MIN(want, n); i++) {
375 /* Incomplete multibyte sequence */
384 return (wc == L'\0' ? 0 : want);
388 _EUC_wcrtomb_impl(char * __restrict s, wchar_t wc,
389 mbstate_t * __restrict ps,
390 uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
396 es = (_EucState *)ps;
404 /* Reset to initial shift state (no-op) */
407 if ((wc & ~0x7f) == 0) {
408 /* Fast path for plain ASCII (CS0) */
413 /* Determine the "length" */
414 if ((unsigned)wc > 0xffffff) {
416 } else if ((unsigned)wc > 0xffff) {
418 } else if ((unsigned)wc > 0xff) {
424 if (len > MB_CUR_MAX) {
429 /* This first check excludes CS1, which is implicitly valid. */
430 if ((wc < 0xa100) || (wc > 0xffff)) {
431 /* Check for valid CS2 or CS3 */
432 nm = (wc >> ((len - 1) * 8));
434 if (len != cs2width) {
438 } else if (nm == cs3) {
439 if (len != cs3width) {
449 /* Stash the bytes, least significant last */
450 for (i = len - 1; i >= 0; i--) {