aboutsummaryrefslogtreecommitdiff
path: root/lib/libc/locale/euc.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libc/locale/euc.c')
-rw-r--r--lib/libc/locale/euc.c455
1 files changed, 455 insertions, 0 deletions
diff --git a/lib/libc/locale/euc.c b/lib/libc/locale/euc.c
new file mode 100644
index 000000000000..2fe40462e9be
--- /dev/null
+++ b/lib/libc/locale/euc.c
@@ -0,0 +1,455 @@
+/*-
+ * Copyright 2013 Garrett D'Amore <garrett@damore.org>
+ * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
+ * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
+ * Copyright (c) 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Copyright (c) 2011 The FreeBSD Foundation
+ * All rights reserved.
+ * 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.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)euc.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/param.h>
+__FBSDID("$FreeBSD$");
+
+#include <errno.h>
+#include <limits.h>
+#include <runetype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include "mblocal.h"
+
+extern int __mb_sb_limit;
+
+static size_t _EUC_mbrtowc_impl(wchar_t * __restrict, const char * __restrict,
+ size_t, mbstate_t * __restrict, uint8_t, uint8_t, uint8_t, uint8_t);
+static size_t _EUC_wcrtomb_impl(char * __restrict, wchar_t,
+ mbstate_t * __restrict, uint8_t, uint8_t, uint8_t, uint8_t);
+
+static size_t _EUC_CN_mbrtowc(wchar_t * __restrict, const char * __restrict,
+ size_t, mbstate_t * __restrict);
+static size_t _EUC_JP_mbrtowc(wchar_t * __restrict, const char * __restrict,
+ size_t, mbstate_t * __restrict);
+static size_t _EUC_KR_mbrtowc(wchar_t * __restrict, const char * __restrict,
+ size_t, mbstate_t * __restrict);
+static size_t _EUC_TW_mbrtowc(wchar_t * __restrict, const char * __restrict,
+ size_t, mbstate_t * __restrict);
+
+static size_t _EUC_CN_wcrtomb(char * __restrict, wchar_t,
+ mbstate_t * __restrict);
+static size_t _EUC_JP_wcrtomb(char * __restrict, wchar_t,
+ mbstate_t * __restrict);
+static size_t _EUC_KR_wcrtomb(char * __restrict, wchar_t,
+ mbstate_t * __restrict);
+static size_t _EUC_TW_wcrtomb(char * __restrict, wchar_t,
+ mbstate_t * __restrict);
+
+static size_t _EUC_CN_mbsnrtowcs(wchar_t * __restrict,
+ const char ** __restrict, size_t, size_t,
+ mbstate_t * __restrict);
+static size_t _EUC_JP_mbsnrtowcs(wchar_t * __restrict,
+ const char ** __restrict, size_t, size_t,
+ mbstate_t * __restrict);
+static size_t _EUC_KR_mbsnrtowcs(wchar_t * __restrict,
+ const char ** __restrict, size_t, size_t,
+ mbstate_t * __restrict);
+static size_t _EUC_TW_mbsnrtowcs(wchar_t * __restrict,
+ const char ** __restrict, size_t, size_t,
+ mbstate_t * __restrict);
+
+static size_t _EUC_CN_wcsnrtombs(char * __restrict,
+ const wchar_t ** __restrict, size_t, size_t,
+ mbstate_t * __restrict);
+static size_t _EUC_JP_wcsnrtombs(char * __restrict,
+ const wchar_t ** __restrict, size_t, size_t,
+ mbstate_t * __restrict);
+static size_t _EUC_KR_wcsnrtombs(char * __restrict,
+ const wchar_t ** __restrict, size_t, size_t,
+ mbstate_t * __restrict);
+static size_t _EUC_TW_wcsnrtombs(char * __restrict,
+ const wchar_t ** __restrict, size_t, size_t,
+ mbstate_t * __restrict);
+
+static int _EUC_mbsinit(const mbstate_t *);
+
+typedef struct {
+ wchar_t ch;
+ int set;
+ int want;
+} _EucState;
+
+static int
+_EUC_mbsinit(const mbstate_t *ps)
+{
+
+ return (ps == NULL || ((const _EucState *)ps)->want == 0);
+}
+
+/*
+ * EUC-CN uses CS0, CS1 and CS2 (4 bytes).
+ */
+int
+_EUC_CN_init(struct xlocale_ctype *l, _RuneLocale *rl)
+{
+ l->__mbrtowc = _EUC_CN_mbrtowc;
+ l->__wcrtomb = _EUC_CN_wcrtomb;
+ l->__mbsnrtowcs = _EUC_CN_mbsnrtowcs;
+ l->__wcsnrtombs = _EUC_CN_wcsnrtombs;
+ l->__mbsinit = _EUC_mbsinit;
+
+ l->runes = rl;
+ l->__mb_cur_max = 4;
+ l->__mb_sb_limit = 128;
+ return (0);
+}
+
+static size_t
+_EUC_CN_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
+ size_t n, mbstate_t * __restrict ps)
+{
+ return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
+}
+
+static size_t
+_EUC_CN_mbsnrtowcs(wchar_t * __restrict dst,
+ const char ** __restrict src,
+ size_t nms, size_t len, mbstate_t * __restrict ps)
+{
+ return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_CN_mbrtowc));
+}
+
+static size_t
+_EUC_CN_wcrtomb(char * __restrict s, wchar_t wc,
+ mbstate_t * __restrict ps)
+{
+ return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
+}
+
+static size_t
+_EUC_CN_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
+ size_t nwc, size_t len, mbstate_t * __restrict ps)
+{
+ return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_CN_wcrtomb));
+}
+
+/*
+ * EUC-KR uses only CS0 and CS1.
+ */
+int
+_EUC_KR_init(struct xlocale_ctype *l, _RuneLocale *rl)
+{
+ l->__mbrtowc = _EUC_KR_mbrtowc;
+ l->__wcrtomb = _EUC_KR_wcrtomb;
+ l->__mbsnrtowcs = _EUC_KR_mbsnrtowcs;
+ l->__wcsnrtombs = _EUC_KR_wcsnrtombs;
+ l->__mbsinit = _EUC_mbsinit;
+
+ l->runes = rl;
+ l->__mb_cur_max = 2;
+ l->__mb_sb_limit = 128;
+ return (0);
+}
+
+static size_t
+_EUC_KR_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
+ size_t n, mbstate_t * __restrict ps)
+{
+ return (_EUC_mbrtowc_impl(pwc, s, n, ps, 0, 0, 0, 0));
+}
+
+static size_t
+_EUC_KR_mbsnrtowcs(wchar_t * __restrict dst,
+ const char ** __restrict src,
+ size_t nms, size_t len, mbstate_t * __restrict ps)
+{
+ return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_KR_mbrtowc));
+}
+
+static size_t
+_EUC_KR_wcrtomb(char * __restrict s, wchar_t wc,
+ mbstate_t * __restrict ps)
+{
+ return (_EUC_wcrtomb_impl(s, wc, ps, 0, 0, 0, 0));
+}
+
+static size_t
+_EUC_KR_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
+ size_t nwc, size_t len, mbstate_t * __restrict ps)
+{
+ return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_KR_wcrtomb));
+}
+
+/*
+ * EUC-JP uses CS0, CS1, CS2, and CS3.
+ */
+int
+_EUC_JP_init(struct xlocale_ctype *l, _RuneLocale *rl)
+{
+ l->__mbrtowc = _EUC_JP_mbrtowc;
+ l->__wcrtomb = _EUC_JP_wcrtomb;
+ l->__mbsnrtowcs = _EUC_JP_mbsnrtowcs;
+ l->__wcsnrtombs = _EUC_JP_wcsnrtombs;
+ l->__mbsinit = _EUC_mbsinit;
+
+ l->runes = rl;
+ l->__mb_cur_max = 3;
+ l->__mb_sb_limit = 128;
+ return (0);
+}
+
+static size_t
+_EUC_JP_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
+ size_t n, mbstate_t * __restrict ps)
+{
+ return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 2, SS3, 3));
+}
+
+static size_t
+_EUC_JP_mbsnrtowcs(wchar_t * __restrict dst,
+ const char ** __restrict src,
+ size_t nms, size_t len, mbstate_t * __restrict ps)
+{
+ return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_JP_mbrtowc));
+}
+
+static size_t
+_EUC_JP_wcrtomb(char * __restrict s, wchar_t wc,
+ mbstate_t * __restrict ps)
+{
+ return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 2, SS3, 3));
+}
+
+static size_t
+_EUC_JP_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
+ size_t nwc, size_t len, mbstate_t * __restrict ps)
+{
+ return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_JP_wcrtomb));
+}
+
+/*
+ * EUC-TW uses CS0, CS1, and CS2.
+ */
+int
+_EUC_TW_init(struct xlocale_ctype *l, _RuneLocale *rl)
+{
+ l->__mbrtowc = _EUC_TW_mbrtowc;
+ l->__wcrtomb = _EUC_TW_wcrtomb;
+ l->__mbsnrtowcs = _EUC_TW_mbsnrtowcs;
+ l->__wcsnrtombs = _EUC_TW_wcsnrtombs;
+ l->__mbsinit = _EUC_mbsinit;
+
+ l->runes = rl;
+ l->__mb_cur_max = 4;
+ l->__mb_sb_limit = 128;
+ return (0);
+}
+
+static size_t
+_EUC_TW_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
+ size_t n, mbstate_t * __restrict ps)
+{
+ return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
+}
+
+static size_t
+_EUC_TW_mbsnrtowcs(wchar_t * __restrict dst,
+ const char ** __restrict src,
+ size_t nms, size_t len, mbstate_t * __restrict ps)
+{
+ return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_TW_mbrtowc));
+}
+
+static size_t
+_EUC_TW_wcrtomb(char * __restrict s, wchar_t wc,
+ mbstate_t * __restrict ps)
+{
+ return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
+}
+
+static size_t
+_EUC_TW_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
+ size_t nwc, size_t len, mbstate_t * __restrict ps)
+{
+ return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_TW_wcrtomb));
+}
+
+/*
+ * Common EUC code.
+ */
+
+static size_t
+_EUC_mbrtowc_impl(wchar_t * __restrict pwc, const char * __restrict s,
+ size_t n, mbstate_t * __restrict ps,
+ uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
+{
+ _EucState *es;
+ int i, want;
+ wchar_t wc = 0;
+ unsigned char ch, chs;
+
+ es = (_EucState *)ps;
+
+ if (es->want < 0 || es->want > MB_CUR_MAX) {
+ errno = EINVAL;
+ return ((size_t)-1);
+ }
+
+ if (s == NULL) {
+ s = "";
+ n = 1;
+ pwc = NULL;
+ }
+
+ if (n == 0)
+ /* Incomplete multibyte sequence */
+ return ((size_t)-2);
+
+ if (es->want == 0) {
+ /* Fast path for plain ASCII (CS0) */
+ if (((ch = (unsigned char)*s) & 0x80) == 0) {
+ if (pwc != NULL)
+ *pwc = ch;
+ return (ch != '\0' ? 1 : 0);
+ }
+
+ if (ch >= 0xa1) {
+ /* CS1 */
+ want = 2;
+ } else if (ch == cs2) {
+ want = cs2width;
+ } else if (ch == cs3) {
+ want = cs3width;
+ } else {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+
+
+ es->want = want;
+ es->ch = 0;
+ } else {
+ want = es->want;
+ wc = es->ch;
+ }
+
+ for (i = 0; i < MIN(want, n); i++) {
+ wc <<= 8;
+ chs = *s;
+ wc |= chs;
+ s++;
+ }
+ if (i < want) {
+ /* Incomplete multibyte sequence */
+ es->want = want - i;
+ es->ch = wc;
+ errno = EILSEQ;
+ return ((size_t)-2);
+ }
+ if (pwc != NULL)
+ *pwc = wc;
+ es->want = 0;
+ return (wc == L'\0' ? 0 : want);
+}
+
+static size_t
+_EUC_wcrtomb_impl(char * __restrict s, wchar_t wc,
+ mbstate_t * __restrict ps,
+ uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
+{
+ _EucState *es;
+ int i, len;
+ wchar_t nm;
+
+ es = (_EucState *)ps;
+
+ if (es->want != 0) {
+ errno = EINVAL;
+ return ((size_t)-1);
+ }
+
+ if (s == NULL)
+ /* Reset to initial shift state (no-op) */
+ return (1);
+
+ if ((wc & ~0x7f) == 0) {
+ /* Fast path for plain ASCII (CS0) */
+ *s = (char)wc;
+ return (1);
+ }
+
+ /* Determine the "length" */
+ if ((unsigned)wc > 0xffffff) {
+ len = 4;
+ } else if ((unsigned)wc > 0xffff) {
+ len = 3;
+ } else if ((unsigned)wc > 0xff) {
+ len = 2;
+ } else {
+ len = 1;
+ }
+
+ if (len > MB_CUR_MAX) {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+
+ /* This first check excludes CS1, which is implicitly valid. */
+ if ((wc < 0xa100) || (wc > 0xffff)) {
+ /* Check for valid CS2 or CS3 */
+ nm = (wc >> ((len - 1) * 8));
+ if (nm == cs2) {
+ if (len != cs2width) {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+ } else if (nm == cs3) {
+ if (len != cs3width) {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+ } else {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+ }
+
+ /* Stash the bytes, least significant last */
+ for (i = len - 1; i >= 0; i--) {
+ s[i] = (wc & 0xff);
+ wc >>= 8;
+ }
+ return (len);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-18 11:24:44 +0000