[BACK]Return to compat_strcasestr.c CVS log [TXT][DIR] Up to [cvsweb.bsd.lv] / mandoc

Annotation of mandoc/compat_strcasestr.c, Revision 1.1

1.1     ! schwarze    1: #ifdef HAVE_CONFIG_H
        !             2: #include "config.h"
        !             3: #endif
        !             4:
        !             5: #ifdef HAVE_STRCASESTR
        !             6:
        !             7: int dummy;
        !             8:
        !             9: #else
        !            10:
        !            11: /*     ($)NetBSD: strcasestr.c,v 1.2 2005/02/09 21:35:47 kleink Exp $ */
        !            12:
        !            13: /*-
        !            14:  * Copyright (c) 1990, 1993
        !            15:  *     The Regents of the University of California.  All rights reserved.
        !            16:  *
        !            17:  * This code is derived from software contributed to Berkeley by
        !            18:  * Chris Torek.
        !            19:  *
        !            20:  * Redistribution and use in source and binary forms, with or without
        !            21:  * modification, are permitted provided that the following conditions
        !            22:  * are met:
        !            23:  * 1. Redistributions of source code must retain the above copyright
        !            24:  *    notice, this list of conditions and the following disclaimer.
        !            25:  * 2. Redistributions in binary form must reproduce the above copyright
        !            26:  *    notice, this list of conditions and the following disclaimer in the
        !            27:  *    documentation and/or other materials provided with the distribution.
        !            28:  * 3. Neither the name of the University nor the names of its contributors
        !            29:  *    may be used to endorse or promote products derived from this software
        !            30:  *    without specific prior written permission.
        !            31:  *
        !            32:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            33:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            34:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            35:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            36:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            37:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            38:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            39:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            40:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            41:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            42:  * SUCH DAMAGE.
        !            43:  */
        !            44:
        !            45: #include <sys/types.h>
        !            46: #include <ctype.h>
        !            47: #include <string.h>
        !            48:
        !            49: #define        __UNCONST(a)    ((void *)(unsigned long)(const void *)(a))
        !            50:
        !            51: /*
        !            52:  * Find the first occurrence of find in s, ignore case.
        !            53:  */
        !            54: char *
        !            55: strcasestr(const char *s, const char *find)
        !            56: {
        !            57:        char c, sc;
        !            58:        size_t len;
        !            59:
        !            60:        if ((c = *find++) != 0) {
        !            61:                c = tolower((unsigned char)c);
        !            62:                len = strlen(find);
        !            63:                do {
        !            64:                        do {
        !            65:                                if ((sc = *s++) == 0)
        !            66:                                        return (NULL);
        !            67:                        } while ((char)tolower((unsigned char)sc) != c);
        !            68:                } while (strncasecmp(s, find, len) != 0);
        !            69:                s--;
        !            70:        }
        !            71:        return __UNCONST(s);
        !            72: }
        !            73:
        !            74: #endif

CVSweb