/* Reentrant string tokenizer. Generic version. Copyright (C) 1991,1996-1999,2001,2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <string.h> #ifdef __USE_GNU # define __rawmemchr rawmemchr #else # define __rawmemchr strchr #endif #if 0 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" */ #endif 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; } libc_hidden_def(strtok_r)