diff options
Diffstat (limited to 'gl/lib/strsep.c')
-rw-r--r-- | gl/lib/strsep.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gl/lib/strsep.c b/gl/lib/strsep.c new file mode 100644 index 0000000..8e9708a --- /dev/null +++ b/gl/lib/strsep.c @@ -0,0 +1,57 @@ +/* Copyright (C) 2004, 2007, 2009-2023 Free Software Foundation, Inc. + + Written by Yoann Vandoorselaere <yoann@prelude-ids.org>. + + This file 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. + + This file 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 this program. If not, see <https://www.gnu.org/licenses/>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +/* Specification. */ +#include <string.h> + +char * +strsep (char **stringp, const char *delim) +{ + char *start = *stringp; + char *ptr; + + if (start == NULL) + return NULL; + + /* Optimize the case of no delimiters. */ + if (delim[0] == '\0') + { + *stringp = NULL; + return start; + } + + /* Optimize the case of one delimiter. */ + if (delim[1] == '\0') + ptr = strchr (start, delim[0]); + else + /* The general case. */ + ptr = strpbrk (start, delim); + if (ptr == NULL) + { + *stringp = NULL; + return start; + } + + *ptr = '\0'; + *stringp = ptr + 1; + + return start; +} |