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
40 * @(#)euc.c 8.1 (Berkeley) 6/4/93
43 #include <sys/param.h>
53 extern int __mb_sb_limit;
55 static size_t _EUC_mbrtowc_impl(wchar_t * __restrict, const char * __restrict,
56 size_t, mbstate_t * __restrict, uint8_t, uint8_t, uint8_t, uint8_t);
57 static size_t _EUC_wcrtomb_impl(char * __restrict, wchar_t,
58 mbstate_t * __restrict, uint8_t, uint8_t, uint8_t, uint8_t);
60 static size_t _EUC_CN_mbrtowc(wchar_t * __restrict, const char * __restrict,
61 size_t, mbstate_t * __restrict);
62 static size_t _EUC_JP_mbrtowc(wchar_t * __restrict, const char * __restrict,
63 size_t, mbstate_t * __restrict);
64 static size_t _EUC_KR_mbrtowc(wchar_t * __restrict, const char * __restrict,
65 size_t, mbstate_t * __restrict);
66 static size_t _EUC_TW_mbrtowc(wchar_t * __restrict, const char * __restrict,
67 size_t, mbstate_t * __restrict);
69 static size_t _EUC_CN_wcrtomb(char * __restrict, wchar_t,
70 mbstate_t * __restrict);
71 static size_t _EUC_JP_wcrtomb(char * __restrict, wchar_t,
72 mbstate_t * __restrict);
73 static size_t _EUC_KR_wcrtomb(char * __restrict, wchar_t,
74 mbstate_t * __restrict);
75 static size_t _EUC_TW_wcrtomb(char * __restrict, wchar_t,
76 mbstate_t * __restrict);
78 static size_t _EUC_CN_mbsnrtowcs(wchar_t * __restrict,
79 const char ** __restrict, size_t, size_t,
80 mbstate_t * __restrict);
81 static size_t _EUC_JP_mbsnrtowcs(wchar_t * __restrict,
82 const char ** __restrict, size_t, size_t,
83 mbstate_t * __restrict);
84 static size_t _EUC_KR_mbsnrtowcs(wchar_t * __restrict,
85 const char ** __restrict, size_t, size_t,
86 mbstate_t * __restrict);
87 static size_t _EUC_TW_mbsnrtowcs(wchar_t * __restrict,
88 const char ** __restrict, size_t, size_t,
89 mbstate_t * __restrict);
91 static size_t _EUC_CN_wcsnrtombs(char * __restrict,
92 const wchar_t ** __restrict, size_t, size_t,
93 mbstate_t * __restrict);
94 static size_t _EUC_JP_wcsnrtombs(char * __restrict,
95 const wchar_t ** __restrict, size_t, size_t,
96 mbstate_t * __restrict);
97 static size_t _EUC_KR_wcsnrtombs(char * __restrict,
98 const wchar_t ** __restrict, size_t, size_t,
99 mbstate_t * __restrict);
100 static size_t _EUC_TW_wcsnrtombs(char * __restrict,
101 const wchar_t ** __restrict, size_t, size_t,
102 mbstate_t * __restrict);
104 static int _EUC_mbsinit(const mbstate_t *);
113 _EUC_mbsinit(const mbstate_t *ps)
116 return (ps == NULL || ((const _EucState *)ps)->want == 0);
120 * EUC-CN uses CS0, CS1 and CS2 (4 bytes).
123 _EUC_CN_init(struct xlocale_ctype *l, _RuneLocale *rl)
125 l->__mbrtowc = _EUC_CN_mbrtowc;
126 l->__wcrtomb = _EUC_CN_wcrtomb;
127 l->__mbsnrtowcs = _EUC_CN_mbsnrtowcs;
128 l->__wcsnrtombs = _EUC_CN_wcsnrtombs;
129 l->__mbsinit = _EUC_mbsinit;
133 l->__mb_sb_limit = 256;
138 _EUC_CN_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
139 size_t n, mbstate_t * __restrict ps)
141 return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
145 _EUC_CN_mbsnrtowcs(wchar_t * __restrict dst,
146 const char ** __restrict src,
147 size_t nms, size_t len, mbstate_t * __restrict ps)
149 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_CN_mbrtowc));
153 _EUC_CN_wcrtomb(char * __restrict s, wchar_t wc,
154 mbstate_t * __restrict ps)
156 return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
160 _EUC_CN_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
161 size_t nwc, size_t len, mbstate_t * __restrict ps)
163 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_CN_wcrtomb));
167 * EUC-KR uses only CS0 and CS1.
170 _EUC_KR_init(struct xlocale_ctype *l, _RuneLocale *rl)
172 l->__mbrtowc = _EUC_KR_mbrtowc;
173 l->__wcrtomb = _EUC_KR_wcrtomb;
174 l->__mbsnrtowcs = _EUC_KR_mbsnrtowcs;
175 l->__wcsnrtombs = _EUC_KR_wcsnrtombs;
176 l->__mbsinit = _EUC_mbsinit;
180 l->__mb_sb_limit = 128;
185 _EUC_KR_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
186 size_t n, mbstate_t * __restrict ps)
188 return (_EUC_mbrtowc_impl(pwc, s, n, ps, 0, 0, 0, 0));
192 _EUC_KR_mbsnrtowcs(wchar_t * __restrict dst,
193 const char ** __restrict src,
194 size_t nms, size_t len, mbstate_t * __restrict ps)
196 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_KR_mbrtowc));
200 _EUC_KR_wcrtomb(char * __restrict s, wchar_t wc,
201 mbstate_t * __restrict ps)
203 return (_EUC_wcrtomb_impl(s, wc, ps, 0, 0, 0, 0));
207 _EUC_KR_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
208 size_t nwc, size_t len, mbstate_t * __restrict ps)
210 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_KR_wcrtomb));
214 * EUC-JP uses CS0, CS1, CS2, and CS3.
217 _EUC_JP_init(struct xlocale_ctype *l, _RuneLocale *rl)
219 l->__mbrtowc = _EUC_JP_mbrtowc;
220 l->__wcrtomb = _EUC_JP_wcrtomb;
221 l->__mbsnrtowcs = _EUC_JP_mbsnrtowcs;
222 l->__wcsnrtombs = _EUC_JP_wcsnrtombs;
223 l->__mbsinit = _EUC_mbsinit;
227 l->__mb_sb_limit = 196;
232 _EUC_JP_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
233 size_t n, mbstate_t * __restrict ps)
235 return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 2, SS3, 3));
239 _EUC_JP_mbsnrtowcs(wchar_t * __restrict dst,
240 const char ** __restrict src,
241 size_t nms, size_t len, mbstate_t * __restrict ps)
243 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_JP_mbrtowc));
247 _EUC_JP_wcrtomb(char * __restrict s, wchar_t wc,
248 mbstate_t * __restrict ps)
250 return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 2, SS3, 3));
254 _EUC_JP_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
255 size_t nwc, size_t len, mbstate_t * __restrict ps)
257 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_JP_wcrtomb));
261 * EUC-TW uses CS0, CS1, and CS2.
264 _EUC_TW_init(struct xlocale_ctype *l, _RuneLocale *rl)
266 l->__mbrtowc = _EUC_TW_mbrtowc;
267 l->__wcrtomb = _EUC_TW_wcrtomb;
268 l->__mbsnrtowcs = _EUC_TW_mbsnrtowcs;
269 l->__wcsnrtombs = _EUC_TW_wcsnrtombs;
270 l->__mbsinit = _EUC_mbsinit;
274 l->__mb_sb_limit = 256;
279 _EUC_TW_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
280 size_t n, mbstate_t * __restrict ps)
282 return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
286 _EUC_TW_mbsnrtowcs(wchar_t * __restrict dst,
287 const char ** __restrict src,
288 size_t nms, size_t len, mbstate_t * __restrict ps)
290 return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_TW_mbrtowc));
294 _EUC_TW_wcrtomb(char * __restrict s, wchar_t wc,
295 mbstate_t * __restrict ps)
297 return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
301 _EUC_TW_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
302 size_t nwc, size_t len, mbstate_t * __restrict ps)
304 return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_TW_wcrtomb));
312 _EUC_mbrtowc_impl(wchar_t * __restrict pwc, const char * __restrict s,
313 size_t n, mbstate_t * __restrict ps,
314 uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
321 es = (_EucState *)ps;
323 if (es->want < 0 || es->want > MB_CUR_MAX) {
335 /* Incomplete multibyte sequence */
339 /* Fast path for plain ASCII (CS0) */
340 if (((ch = (unsigned char)*s) & 0x80) == 0) {
343 return (ch != '\0' ? 1 : 0);
349 } else if (ch == cs2) {
351 } else if (ch == cs3) {
366 for (i = 0; i < MIN(want, n); i++) {
372 /* Incomplete multibyte sequence */
380 return (wc == L'\0' ? 0 : want);
384 _EUC_wcrtomb_impl(char * __restrict s, wchar_t wc,
385 mbstate_t * __restrict ps,
386 uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
392 es = (_EucState *)ps;
400 /* Reset to initial shift state (no-op) */
403 if ((wc & ~0x7f) == 0) {
404 /* Fast path for plain ASCII (CS0) */
409 /* Determine the "length" */
410 if ((unsigned)wc > 0xffffff) {
412 } else if ((unsigned)wc > 0xffff) {
414 } else if ((unsigned)wc > 0xff) {
420 if (len > MB_CUR_MAX) {
425 /* This first check excludes CS1, which is implicitly valid. */
426 if ((wc < 0xa100) || (wc > 0xffff)) {
427 /* Check for valid CS2 or CS3 */
428 nm = (wc >> ((len - 1) * 8));
430 if (len != cs2width) {
434 } else if (nm == cs3) {
435 if (len != cs3width) {
445 /* Stash the bytes, least significant last */
446 for (i = len - 1; i >= 0; i--) {