This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
265 lines
4.6 KiB
C
265 lines
4.6 KiB
C
/* $NetBSD: multibyte_sb.c,v 1.5 2004/07/21 20:27:46 tshiozak Exp $ */
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/*
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char *sccsid = "from: @(#)multibyte.c 5.1 (Berkeley) 2/18/91";
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#else
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__RCSID("$NetBSD: multibyte_sb.c,v 1.5 2004/07/21 20:27:46 tshiozak Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include <assert.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <wchar.h>
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/*
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* Stub multibyte character functions.
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* This cheezy implementation is fixed to the native single-byte
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* character set.
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*/
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/*ARGSUSED*/
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int
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mbsinit(ps)
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const mbstate_t *ps;
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{
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return 1;
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}
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/*ARGSUSED*/
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size_t
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mbrlen(s, n, ps)
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const char *s;
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size_t n;
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mbstate_t *ps;
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{
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/* ps appears to be unused */
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if (s == NULL || *s == '\0')
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return 0;
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if (n == 0)
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return (size_t)-1;
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return 1;
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}
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int
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mblen(s, n)
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const char *s;
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size_t n;
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{
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/* s may be NULL */
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return mbrlen(s, n, NULL);
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}
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/*ARGSUSED*/
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size_t
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mbrtowc(pwc, s, n, ps)
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wchar_t *pwc;
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const char *s;
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size_t n;
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mbstate_t *ps;
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{
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/* pwc may be NULL */
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/* s may be NULL */
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/* ps appears to be unused */
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if (s == NULL)
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return 0;
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if (n == 0)
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return (size_t)-1;
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if (pwc)
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*pwc = (wchar_t) *s;
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return (*s != '\0');
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}
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int
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mbtowc(pwc, s, n)
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wchar_t *pwc;
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const char *s;
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size_t n;
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{
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/* pwc may be NULL */
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/* s may be NULL */
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return mbrtowc(pwc, s, n, NULL);
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}
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/*ARGSUSED*/
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size_t
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wcrtomb(s, wchar, ps)
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char *s;
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wchar_t wchar;
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mbstate_t *ps;
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{
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/* s may be NULL */
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/* ps appears to be unused */
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if (s == NULL)
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return 0;
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*s = (char) wchar;
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return 1;
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}
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int
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wctomb(s, wchar)
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char *s;
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wchar_t wchar;
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{
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/* s may be NULL */
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return wcrtomb(s, wchar, NULL);
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}
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/*ARGSUSED*/
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size_t
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mbsrtowcs(pwcs, s, n, ps)
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wchar_t *pwcs;
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const char **s;
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size_t n;
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mbstate_t *ps;
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{
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int count = 0;
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/* pwcs may be NULL */
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/* s may be NULL */
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/* ps appears to be unused */
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if (!s || !*s)
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return 0;
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if (n != 0) {
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if (pwcs != NULL) {
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do {
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if ((*pwcs++ = (wchar_t) *(*s)++) == 0)
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break;
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count++;
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} while (--n != 0);
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} else {
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do {
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if (((wchar_t)*(*s)++) == 0)
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break;
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count++;
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} while (--n != 0);
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}
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}
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return count;
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}
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size_t
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mbstowcs(pwcs, s, n)
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wchar_t *pwcs;
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const char *s;
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size_t n;
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{
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/* pwcs may be NULL */
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/* s may be NULL */
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return mbsrtowcs(pwcs, &s, n, NULL);
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}
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/*ARGSUSED*/
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size_t
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wcsrtombs(s, pwcs, n, ps)
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char *s;
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const wchar_t **pwcs;
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size_t n;
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mbstate_t *ps;
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{
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int count = 0;
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/* s may be NULL */
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/* pwcs may be NULL */
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/* ps appears to be unused */
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if (pwcs == NULL || *pwcs == NULL)
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return (0);
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if (s == NULL) {
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while (*(*pwcs)++ != 0)
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count++;
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return(count);
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}
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if (n != 0) {
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do {
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if ((*s++ = (char) *(*pwcs)++) == 0)
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break;
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count++;
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} while (--n != 0);
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}
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return count;
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}
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size_t
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wcstombs(s, pwcs, n)
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char *s;
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const wchar_t *pwcs;
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size_t n;
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{
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/* s may be NULL */
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/* pwcs may be NULL */
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return wcsrtombs(s, &pwcs, n, NULL);
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}
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wint_t
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btowc(c)
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int c;
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{
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if (c == EOF || c & ~0xFF)
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return WEOF;
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return (wint_t)c;
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}
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int
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wctob(c)
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wint_t c;
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{
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if (c == WEOF || c & ~0xFF)
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return EOF;
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return (int)c;
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}
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