plan9port

commit b6863de7e1b95fd68623e1a03eca6d3aebc4732e
parent f6d2cbfe4795015d252ef9c6d281adccf069438f
Author: David du Colombier <0intro@gmail.com>
Date:   Tue, 16 Aug 2011 16:11:56 -0400

zerotrunc: from Plan 9

R=rsc
CC=plan9port.codebot
http://codereview.appspot.com/4809089

Diffstat:
A
src/cmd/zerotrunc.c
 | 
26
++++++++++++++++++++++++++

1 file changed, 26 insertions(+), 0 deletions(-)
diff --git a/src/cmd/zerotrunc.c b/src/cmd/zerotrunc.c
@@ -0,0 +1,26 @@
+/*
+ * cat standard input until you get a zero byte
+ */
+
+#include <u.h>
+#include <libc.h>
+
+void
+main(void)
+{
+	char buf[4096];
+	char *p;
+	int n;
+
+	while((n = read(0, buf, sizeof(buf))) > 0){
+		p = memchr(buf, 0, n);
+		if(p != nil)
+			n = p-buf;
+		if(n > 0)
+			write(1, buf, n);
+		if(p != nil)
+			break;
+	}
+	exits(0);
+}
+