scc

commit 0bb819c2423f68687ac0a6376ce6f1a6967a5a51
parent c8f1b2b548d1ca0f577e3005ce3514cddd6f491f
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Tue, 21 Feb 2017 10:09:20 +0100

[libc] Add strtok.c

Diffstat:
M
libc/src/Makefile
 | 
2
+-
A
libc/src/strtok.c
 | 
26
++++++++++++++++++++++++++

2 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/libc/src/Makefile b/libc/src/Makefile
@@ -3,7 +3,7 @@
 
 LIBCOBJ = assert.o strcpy.o strcmp.o strlen.o strchr.o \
           strrchr.o strcat.o strncpy.o strncat.o strcoll.o \
-          strxfrm.o \
+          strxfrm.o strtok.o \
           memset.o memcpy.o memmove.o memcmp.o memchr.o \
           isalnum.o isalpha.o isascii.o isblank.o iscntrl.o isdigit.o \
           isgraph.o islower.o isprint.o ispunct.o isspace.o isupper.o \
diff --git a/libc/src/strtok.c b/libc/src/strtok.c
@@ -0,0 +1,26 @@
+/* See LICENSE file for copyright and license details. */
+
+#include <string.h>
+
+char *
+strtok(const char *s, const char *delim)
+{
+	static char *line;
+
+	if (s) 
+		line = s;
+	if (!s && !line)
+		return NULL;
+
+	s = line + strspn(line, delim);
+	if (*s == '\0')
+		return line = NULL;
+
+	line = s + strcspn(s, delim);
+	if (*line != '\0')
+		*line++ = '\0';
+	else
+		line = NULL;
+
+	return s;
+}