Added __strtok_r function. Change strtok to a wrapper around __strtok_r and

add a weak alias of __strtok_r for strtok_r since optional.  Also reduced
code size.

1 files changed, 55 insertions, 0 deletions

diff --git a/libc/string/strtok_r.c b/libc/string/strtok_r.c
new file mode 100644
index 000000000..37b313455
--- /dev/null
+++ b/libc/string/strtok_r.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1991 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/*
+ * Modified by Manuel Novoa III     Mar 1, 2001
+ *
+ * Converted original strtok.c code of strtok to __strtok_r.
+ * Cleaned up logic and reduced code size.
+ */
+
+#include <string.h>
+
+char *__strtok_r(char *s, const char *delim, char **save_ptr)
+{
+	char *token;
+
+	token = 0;					/* Initialize to no token. */
+
+	if (s == 0) {				/* If not first time called... */
+		s = *save_ptr;			/* restart from where we left off. */
+	}
+	
+	if (s != 0) {				/* If not finished... */
+		*save_ptr = 0;
+
+		s += strspn(s, delim);	/* Skip past any leading delimiters. */
+		if (*s != '\0') {		/* We have a token. */
+			token = s;
+			*save_ptr = strpbrk(token, delim); /* Find token's end. */
+			if (*save_ptr != 0) {
+				/* Terminate the token and make SAVE_PTR point past it.  */
+				*(*save_ptr)++ = '\0';
+			}
+		}
+	}
+
+	return token;
+}
+
+__asm__(".weak strtok_r; strtok_r = __strtok_r");