| | 1 | /*- |
| | 2 | * Copyright (c) 1990, 1993 |
| | 3 | * The Regents of the University of California. All rights reserved. |
| | 4 | * |
| | 5 | * Redistribution and use in source and binary forms, with or without |
| | 6 | * modification, are permitted provided that the following conditions |
| | 7 | * are met: |
| | 8 | * 1. Redistributions of source code must retain the above copyright |
| | 9 | * notice, this list of conditions and the following disclaimer. |
| | 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 11 | * notice, this list of conditions and the following disclaimer in the |
| | 12 | * documentation and/or other materials provided with the distribution. |
| | 13 | * 4. Neither the name of the University nor the names of its contributors |
| | 14 | * may be used to endorse or promote products derived from this software |
| | 15 | * without specific prior written permission. |
| | 16 | * |
| | 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 27 | * SUCH DAMAGE. |
| | 28 | */ |
| | 29 | |
| | 30 | #if defined(LIBC_SCCS) && !defined(lint) |
| | 31 | static char sccsid[] = "@(#)strsep.c 8.1 (Berkeley) 6/4/93"; |
| | 32 | #endif /* LIBC_SCCS and not lint */ |
| | 33 | #include <sys/cdefs.h> |
| | 34 | __FBSDID("$FreeBSD: src/lib/libc/string/strsep.c,v 1.7 2009/02/03 17:58:20 danger Exp $"); |
| | 35 | |
| | 36 | #include <string.h> |
| | 37 | #include <stdio.h> |
| | 38 | |
| | 39 | /* |
| | 40 | * Get next token from string *stringp, where tokens are possibly-empty |
| | 41 | * strings separated by characters from delim. |
| | 42 | * |
| | 43 | * Writes NULs into the string at *stringp to end tokens. |
| | 44 | * delim need not remain constant from call to call. |
| | 45 | * On return, *stringp points past the last NUL written (if there might |
| | 46 | * be further tokens), or is NULL (if there are definitely no more tokens). |
| | 47 | * |
| | 48 | * If *stringp is NULL, strsep returns NULL. |
| | 49 | */ |
| | 50 | char * |
| | 51 | strsep(char **stringp, const char *delim) |
| | 52 | { |
| | 53 | char *s; |
| | 54 | const char *spanp; |
| | 55 | int c, sc; |
| | 56 | char *tok; |
| | 57 | |
| | 58 | if ((s = *stringp) == NULL) |
| | 59 | return (NULL); |
| | 60 | for (tok = s;;) { |
| | 61 | c = *s++; |
| | 62 | spanp = delim; |
| | 63 | do { |
| | 64 | if ((sc = *spanp++) == c) { |
| | 65 | if (c == 0) |
| | 66 | s = NULL; |
| | 67 | else |
| | 68 | s[-1] = 0; |
| | 69 | *stringp = s; |
| | 70 | return (tok); |
| | 71 | } |
| | 72 | } while (sc != 0); |
| | 73 | } |
| | 74 | /* NOTREACHED */ |
| | 75 | } |
projects / apple / libc.git / blame_incremental