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- /*
- * Copyright (c) 1991 The Regents of the University of California.
- * All rights reserved.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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 = "from: @(#)multibyte.c 5.1 (Berkeley) 2/18/91";*/
- static char *rcsid = "$Id: multibyte.c,v 1.4 1995/03/05 07:41:15 jtc Exp $";
- #endif /* LIBC_SCCS and not lint */
-
- #include <stdlib.h>
-
- /*
- * Stub multibyte character functions.
- * This cheezy implementation is fixed to the native single-byte
- * character set.
- */
-
- int
- mblen(s, n)
- const char *s;
- size_t n;
- {
- if (s == NULL || *s == '\0')
- return 0;
- if (n == 0)
- return -1;
- return 1;
- }
-
- /*ARGSUSED*/
- int
- mbtowc(pwc, s, n)
- wchar_t *pwc;
- const char *s;
- size_t n;
- {
- if (s == NULL)
- return 0;
- if (n == 0)
- return -1;
- if (pwc)
- *pwc = (wchar_t) *s;
- return (*s != '\0');
- }
-
- /*ARGSUSED*/
- int
- #ifdef __STDC__
- wctomb(char *s, wchar_t wchar)
- #else
- wctomb(s, wchar)
- char *s;
- wchar_t wchar;
- #endif
- {
- if (s == NULL)
- return 0;
-
- *s = (char) wchar;
- return 1;
- }
-
- /*ARGSUSED*/
- size_t
- mbstowcs(pwcs, s, n)
- wchar_t *pwcs;
- const char *s;
- size_t n;
- {
- int count = 0;
-
- if (n != 0) {
- do {
- if ((*pwcs++ = (wchar_t) *s++) == 0)
- break;
- count++;
- } while (--n != 0);
- }
-
- return count;
- }
-
- /*ARGSUSED*/
- size_t
- wcstombs(s, pwcs, n)
- char *s;
- const wchar_t *pwcs;
- size_t n;
- {
- int count = 0;
-
- if (n != 0) {
- do {
- if ((*s++ = (char) *pwcs++) == 0)
- break;
- count++;
- } while (--n != 0);
- }
-
- return count;
- }
-
-