| /* Copyright (C) 1992-2014 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> |
| |
| #undef __strsep |
| #undef strsep |
| |
| char * |
| __strsep (char **stringp, const char *delim) |
| { |
| char *begin, *end; |
| |
| begin = *stringp; |
| if (begin == NULL) |
| return NULL; |
| |
| /* A frequent case is when the delimiter string contains only one |
| character. Here we don't need to call the expensive `strpbrk' |
| function and instead work using `strchr'. */ |
| if (delim[0] == '\0' || delim[1] == '\0') |
| { |
| char ch = delim[0]; |
| |
| if (ch == '\0') |
| end = NULL; |
| else |
| { |
| if (*begin == ch) |
| end = begin; |
| else if (*begin == '\0') |
| end = NULL; |
| else |
| end = strchr (begin + 1, ch); |
| } |
| } |
| else |
| /* Find the end of the token. */ |
| end = strpbrk (begin, delim); |
| |
| if (end) |
| { |
| /* Terminate the token and set *STRINGP past NUL character. */ |
| *end++ = '\0'; |
| *stringp = end; |
| } |
| else |
| /* No more delimiters; this is the last token. */ |
| *stringp = NULL; |
| |
| return begin; |
| } |
| weak_alias (__strsep, strsep) |
| strong_alias (__strsep, __strsep_g) |
| libc_hidden_def (__strsep_g) |