Import sources from 2011-03-30 iso image

1 files changed, 21 insertions, 0 deletions

diff --git a/sys/src/libc/port/strcspn.c b/sys/src/libc/port/strcspn.c
new file mode 100755
index 000000000..8349af335
--- /dev/null
+++ b/sys/src/libc/port/strcspn.c
@@ -0,0 +1,21 @@
+#include <u.h>
+#include <libc.h>
+
+#define	N	256
+
+long
+strcspn(char *s, char *b)
+{
+	char map[N], *os;
+
+	memset(map, 0, N);
+	for(;;) {
+		map[*(uchar*)b] = 1;
+		if(*b++ == 0)
+			break;
+	}
+	os = s;
+	while(map[*(uchar*)s++] == 0)
+		;
+	return s - os - 1;
+}