diff options
Diffstat (limited to 'newlib/libc/string/wcsspn.c')
-rw-r--r-- | newlib/libc/string/wcsspn.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/newlib/libc/string/wcsspn.c b/newlib/libc/string/wcsspn.c new file mode 100644 index 000000000..f0b2fb99f --- /dev/null +++ b/newlib/libc/string/wcsspn.c @@ -0,0 +1,86 @@ +/* +FUNCTION + <<wcsspn>>---get length of a wide substring + +ANSI_SYNOPSIS + #include <wchar.h> + size_t wcsspn(const wchar_t *<[s]>, const wchar_t *<[set]>); + +TRAD_SYNOPSIS + size_t wcsspn(<[s]>, <[set]> + const wchar_t *<[s]>; + const wchar_t *<[set]>; + +DESCRIPTION + The <<wcsspn>> function computes the length of the maximum initial + segment of the wide-character string pointed to by <[s]> which consists + entirely of wide-character codes from the wide-character string + pointed to by <[set]>. + +RETURNS + The wcsspn() function returns the length <[s1]>; no return value is + reserved to indicate an error. + +PORTABILITY +<<wcsspn>> is ISO/IEC 9899/AMD1:1995 (ISO C). +No supporting OS subroutines are required. +*/ + +/* $NetBSD: wcsspn.c,v 1.1 2000/12/23 23:14:37 itojun Exp $ */ + +/*- + * Copyright (c)1999 Citrus Project, + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + * + * citrus Id: wcsspn.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp + */ + +#include <_ansi.h> +#include <wchar.h> + +size_t +_DEFUN (wcsspn, (s, set), + _CONST wchar_t * s _AND + _CONST wchar_t * set) +{ + _CONST wchar_t *p; + _CONST wchar_t *q; + + p = s; + while (*p) + { + q = set; + while (*q) + { + if (*p == *q) + break; + } + if (!*q) + goto done; + p++; + } + +done: + return (p - s); +} |