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Annotation of mandoc/compat_strsep.c, Revision 1.1

1.1     ! schwarze    1: #ifdef HAVE_CONFIG_H
        !             2: #include "config.h"
        !             3: #endif
        !             4:
        !             5: #ifdef HAVE_STRSEP
        !             6:
        !             7: int dummy;
        !             8:
        !             9: #else
        !            10:
        !            11: /*     ($)OpenBSD: strsep.c,v 1.6 2005/08/08 08:05:37 espie Exp $      */
        !            12:
        !            13: /*-
        !            14:  * Copyright (c) 1990, 1993
        !            15:  *     The Regents of the University of California.  All rights reserved.
        !            16:  *
        !            17:  * Redistribution and use in source and binary forms, with or without
        !            18:  * modification, are permitted provided that the following conditions
        !            19:  * are met:
        !            20:  * 1. Redistributions of source code must retain the above copyright
        !            21:  *    notice, this list of conditions and the following disclaimer.
        !            22:  * 2. Redistributions in binary form must reproduce the above copyright
        !            23:  *    notice, this list of conditions and the following disclaimer in the
        !            24:  *    documentation and/or other materials provided with the distribution.
        !            25:  * 3. Neither the name of the University nor the names of its contributors
        !            26:  *    may be used to endorse or promote products derived from this software
        !            27:  *    without specific prior written permission.
        !            28:  *
        !            29:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            30:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            31:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            32:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            33:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            34:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            35:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            36:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            37:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            38:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            39:  * SUCH DAMAGE.
        !            40:  */
        !            41:
        !            42: /*
        !            43:  * Get next token from string *stringp, where tokens are possibly-empty
        !            44:  * strings separated by characters from delim.
        !            45:  *
        !            46:  * Writes NULs into the string at *stringp to end tokens.
        !            47:  * delim need not remain constant from call to call.
        !            48:  * On return, *stringp points past the last NUL written (if there might
        !            49:  * be further tokens), or is NULL (if there are definitely no more tokens).
        !            50:  *
        !            51:  * If *stringp is NULL, strsep returns NULL.
        !            52:  */
        !            53: char *
        !            54: strsep(char **stringp, const char *delim)
        !            55: {
        !            56:        char *s;
        !            57:        const char *spanp;
        !            58:        int c, sc;
        !            59:        char *tok;
        !            60:
        !            61:        if ((s = *stringp) == NULL)
        !            62:                return (NULL);
        !            63:        for (tok = s;;) {
        !            64:                c = *s++;
        !            65:                spanp = delim;
        !            66:                do {
        !            67:                        if ((sc = *spanp++) == c) {
        !            68:                                if (c == 0)
        !            69:                                        s = NULL;
        !            70:                                else
        !            71:                                        s[-1] = 0;
        !            72:                                *stringp = s;
        !            73:                                return (tok);
        !            74:                        }
        !            75:                } while (sc != 0);
        !            76:        }
        !            77:        /* NOTREACHED */
        !            78: }
        !            79:
        !            80: #endif