Import sources from 2011-03-30 iso image

1 files changed, 30 insertions, 0 deletions

diff --git a/sys/src/libc/port/strtok.c b/sys/src/libc/port/strtok.c
new file mode 100755
index 000000000..cb8d5fdf5
--- /dev/null
+++ b/sys/src/libc/port/strtok.c
@@ -0,0 +1,30 @@
+#include <u.h>
+#include <libc.h>
+
+#define	N	256
+
+char*
+strtok(char *s, char *b)
+{
+	static char *under_rock;
+	char map[N], *os;
+
+	memset(map, 0, N);
+	while(*b)
+		map[*(uchar*)b++] = 1;
+	if(s == 0)
+		s = under_rock;
+	while(map[*(uchar*)s++])
+		;
+	if(*--s == 0)
+		return 0;
+	os = s;
+	while(map[*(uchar*)s] == 0)
+		if(*s++ == 0) {
+			under_rock = s-1;
+			return os;
+		}
+	*s++ = 0;
+	under_rock = s;
+	return os;
+}