15b0fe478SBruce M Simpson /*-
25b0fe478SBruce M Simpson * Copyright (c) 1990, 1993
35b0fe478SBruce M Simpson * The Regents of the University of California. All rights reserved.
45b0fe478SBruce M Simpson *
55b0fe478SBruce M Simpson * Redistribution and use in source and binary forms, with or without
65b0fe478SBruce M Simpson * modification, are permitted provided that the following conditions
75b0fe478SBruce M Simpson * are met:
85b0fe478SBruce M Simpson * 1. Redistributions of source code must retain the above copyright
95b0fe478SBruce M Simpson * notice, this list of conditions and the following disclaimer.
105b0fe478SBruce M Simpson * 2. Redistributions in binary form must reproduce the above copyright
115b0fe478SBruce M Simpson * notice, this list of conditions and the following disclaimer in the
125b0fe478SBruce M Simpson * documentation and/or other materials provided with the distribution.
135b0fe478SBruce M Simpson * 3. All advertising materials mentioning features or use of this software
145b0fe478SBruce M Simpson * must display the following acknowledgement:
155b0fe478SBruce M Simpson * This product includes software developed by the University of
165b0fe478SBruce M Simpson * California, Berkeley and its contributors.
175b0fe478SBruce M Simpson * 4. Neither the name of the University nor the names of its contributors
185b0fe478SBruce M Simpson * may be used to endorse or promote products derived from this software
195b0fe478SBruce M Simpson * without specific prior written permission.
205b0fe478SBruce M Simpson *
215b0fe478SBruce M Simpson * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
225b0fe478SBruce M Simpson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
235b0fe478SBruce M Simpson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
245b0fe478SBruce M Simpson * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
255b0fe478SBruce M Simpson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
265b0fe478SBruce M Simpson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
275b0fe478SBruce M Simpson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
285b0fe478SBruce M Simpson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
295b0fe478SBruce M Simpson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
305b0fe478SBruce M Simpson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
315b0fe478SBruce M Simpson * SUCH DAMAGE.
325b0fe478SBruce M Simpson */
335b0fe478SBruce M Simpson
345b0fe478SBruce M Simpson #include <config.h>
355b0fe478SBruce M Simpson
363340d773SGleb Smirnoff #include <netdissect-stdinc.h>
375b0fe478SBruce M Simpson
385b0fe478SBruce M Simpson #include <string.h>
395b0fe478SBruce M Simpson
403340d773SGleb Smirnoff #include "netdissect.h"
418bdc5a62SPatrick Kelsey
425b0fe478SBruce M Simpson /*
435b0fe478SBruce M Simpson * Get next token from string *stringp, where tokens are possibly-empty
445b0fe478SBruce M Simpson * strings separated by characters from delim.
455b0fe478SBruce M Simpson *
465b0fe478SBruce M Simpson * Writes NULs into the string at *stringp to end tokens.
475b0fe478SBruce M Simpson * delim need not remain constant from call to call.
485b0fe478SBruce M Simpson * On return, *stringp points past the last NUL written (if there might
495b0fe478SBruce M Simpson * be further tokens), or is NULL (if there are definitely no more tokens).
505b0fe478SBruce M Simpson *
515b0fe478SBruce M Simpson * If *stringp is NULL, strsep returns NULL.
525b0fe478SBruce M Simpson */
535b0fe478SBruce M Simpson char *
strsep(char ** stringp,const char * delim)545b0fe478SBruce M Simpson strsep(char **stringp, const char *delim)
555b0fe478SBruce M Simpson {
56*ee67461eSJoseph Mingrone char *s;
57*ee67461eSJoseph Mingrone const char *spanp;
58*ee67461eSJoseph Mingrone int c, sc;
595b0fe478SBruce M Simpson char *tok;
605b0fe478SBruce M Simpson
615b0fe478SBruce M Simpson if ((s = *stringp) == NULL)
625b0fe478SBruce M Simpson return (NULL);
635b0fe478SBruce M Simpson for (tok = s;;) {
645b0fe478SBruce M Simpson c = *s++;
655b0fe478SBruce M Simpson spanp = delim;
665b0fe478SBruce M Simpson do {
675b0fe478SBruce M Simpson if ((sc = *spanp++) == c) {
685b0fe478SBruce M Simpson if (c == 0)
695b0fe478SBruce M Simpson s = NULL;
705b0fe478SBruce M Simpson else
715b0fe478SBruce M Simpson s[-1] = 0;
725b0fe478SBruce M Simpson *stringp = s;
735b0fe478SBruce M Simpson return (tok);
745b0fe478SBruce M Simpson }
755b0fe478SBruce M Simpson } while (sc != 0);
765b0fe478SBruce M Simpson }
775b0fe478SBruce M Simpson /* NOTREACHED */
785b0fe478SBruce M Simpson }
79