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-rw-r--r--gl/lib/strsep.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/gl/lib/strsep.c b/gl/lib/strsep.c
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+++ b/gl/lib/strsep.c
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+/* Copyright (C) 2004, 2007, 2009-2022 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;
+}