1 files changed, 34 insertions, 0 deletions
diff --git a/src/string/strtok.c b/src/string/strtok.c
new file mode 100644
index 00000000..9a7137cf
--- /dev/null
+++ b/src/string/strtok.c
@@ -0,0 +1,34 @@
+#include <string.h>
+#include "nonstd/assert.h"
+
+/** split string into tokens **/
+char * strtok(char * restrict s1, const char * restrict s2)
+{
+	extern char * strtok_r(char *restr, const char *restrict, char **);
+	static char *current;
+
+	/* TODO */
+	ASSERT_NONNULL(s2);
+
+	/*
+	RETURN(CONSTANT(NULL), there are no further tokens, only token separators);
+	RETURN(NONNULL, a pointer to the first character of the next token);
+	*/
+
+	return strtok_r (s1, s2, &current);
+}
+
+/***
+splits the string ARGUMENT(s1) into a series of tokens
+delimited by characters from the string ARGUMENT(s2).
+
+The first call in a sequence specifies a string for ARGUMENT(s1). Further calls
+specify CONSTANT(NULL) in order to continue from the end of the previous token.
+The list of token separators in ARGUMENT(s2) may vary from call to call.
+
+When tokens are found, the next token separate character is replaced with a
+CHAR(\0), terminating the token.
+***/
+/*
+STDC(1)
+*/