From 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 12 Jul 2007 18:26:36 +0000 Subject: 2.5-18.1 --- string/strtok_r.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 string/strtok_r.c (limited to 'string/strtok_r.c') diff --git a/string/strtok_r.c b/string/strtok_r.c new file mode 100644 index 0000000000..b11cb520f6 --- /dev/null +++ b/string/strtok_r.c @@ -0,0 +1,79 @@ +/* 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include + +#undef strtok_r +#undef __strtok_r + +#ifndef _LIBC +/* Get specification. */ +# include "strtok_r.h" +# 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 -- cgit v1.2.1