| /* Reentrant string tokenizer. Generic version. |
| Copyright (C) 1991, 1996-1999, 2001, 2004, 2007, 2009-2016 Free Software |
| Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| |
| #include <string.h> |
| |
| #ifdef _LIBC |
| # undef strtok_r |
| # undef __strtok_r |
| #else |
| # define __strtok_r strtok_r |
| # define __rawmemchr strchr |
| #endif |
| |
| /* Parse S into tokens separated by characters in DELIM. |
| If S is NULL, the saved pointer in SAVE_PTR is used as |
| the next starting point. For example: |
| char s[] = "-abc-=-def"; |
| char *sp; |
| x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def" |
| x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL |
| x = strtok_r(NULL, "=", &sp); // x = NULL |
| // s = "abc\0-def\0" |
| */ |
| char * |
| __strtok_r (char *s, const char *delim, char **save_ptr) |
| { |
| char *token; |
| |
| if (s == NULL) |
| s = *save_ptr; |
| |
| /* Scan leading delimiters. */ |
| s += strspn (s, delim); |
| if (*s == '\0') |
| { |
| *save_ptr = s; |
| return NULL; |
| } |
| |
| /* Find the end of the token. */ |
| token = s; |
| s = strpbrk (token, delim); |
| if (s == NULL) |
| /* This token finishes the string. */ |
| *save_ptr = __rawmemchr (token, '\0'); |
| else |
| { |
| /* Terminate the token and make *SAVE_PTR point past it. */ |
| *s = '\0'; |
| *save_ptr = s + 1; |
| } |
| return token; |
| } |
| #ifdef weak_alias |
| libc_hidden_def (__strtok_r) |
| weak_alias (__strtok_r, strtok_r) |
| #endif |