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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [string/] [wcsstr.c] - Rev 301
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/* FUNCTION <<wcsstr>>---find a wide-character substring ANSI_SYNOPSIS #include <wchar.h> wchar_t *wcsstr(const wchar_t *<[big]>, const wchar_t *<[little]>); TRAD_SYNOPSIS wchar_t *wcsstr(<[big]>, <[little]> const wchar_t *<[big]>; const wchar_t *<[little]>; DESCRIPTION The <<wcsstr>> function locates the first occurrence in the wide-character string pointed to by <[big]> of the sequence of wide characters (excluding the terminating null wide character) in the wide-character string pointed to by <[little]>. RETURNS On successful completion, <<wcsstr>> returns a pointer to the located wide-character string, or a null pointer if the wide-character string is not found. If <[little]> points to a wide-character string with zero length, the function returns <[big]>. PORTABILITY <<wcsstr>> is ISO/IEC 9899/AMD1:1995 (ISO C). */ /* $NetBSD: wcsstr.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: wcsstr.c,v 1.2 2000/12/21 05:07:25 itojun Exp */ #include <_ansi.h> #include <stddef.h> #include <wchar.h> wchar_t * _DEFUN (wcsstr, (big, little), _CONST wchar_t * big _AND _CONST wchar_t * little) { _CONST wchar_t *p; _CONST wchar_t *q; _CONST wchar_t *r; if (!*little) { /* LINTED interface specification */ return (wchar_t *) big; } if (wcslen (big) < wcslen (little)) return NULL; p = big; q = little; while (*p) { q = little; r = p; while (*q) { if (*r != *q) break; q++; r++; } if (!*q) { /* LINTED interface specification */ return (wchar_t *) p; } p++; } return NULL; }
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