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Diffstat (limited to 'lib/libc/stdlib/multibyte.c')
| -rw-r--r-- | lib/libc/stdlib/multibyte.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/lib/libc/stdlib/multibyte.c b/lib/libc/stdlib/multibyte.c new file mode 100644 index 00000000000..fe1cd5781bc --- /dev/null +++ b/lib/libc/stdlib/multibyte.c @@ -0,0 +1,131 @@ +/* + * 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 1.1.1.1 1995/10/18 08:42:18 deraadt 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; +} + |