add --pipe, fix bulkstring read error

rsload.go

@@ -13,6 +13,7 @@ var options struct {
 	port     int
 	password string
 	buffer   int
+	pipe     bool
 }
 
 func usage(status int) {
@@ -31,11 +32,6 @@ func randomString(n int) string {
 
 func main() {
 	flag.Parse()
-	args := flag.Args()
-	if len(args) < 1 {
-		usage(1)
-	}
-	fname := args[0]
 
 	conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", options.host, options.port))
 	if err != nil {
@@ -57,12 +53,25 @@ func main() {
 		}
 	}
 
-	infile, err := os.Open(fname)
-	if err != nil {
-		fmt.Printf("unable to open file %s: %v\n", fname, err)
-		os.Exit(1)
+	var infile *os.File
+
+	if options.pipe {
+		infile = os.Stdin
+	} else {
+		args := flag.Args()
+		if len(args) < 1 {
+			usage(1)
+		}
+		fname := args[0]
+
+		var err error
+		infile, err = os.Open(fname)
+		if err != nil {
+			fmt.Printf("unable to open file %s: %v\n", fname, err)
+			os.Exit(1)
+		}
+		defer infile.Close()
 	}
-	defer infile.Close()
 
 	c := make(chan maybe)
 	sent := make(chan value, options.buffer)
@@ -77,8 +86,8 @@ func main() {
 				r.val().Write(conn)
 				sent <- r.val()
 			} else {
-				// this bad
-				fmt.Println(r.err())
+				fmt.Fprintf(os.Stderr, "InputError: %v\n", r.err())
+				return
 			}
 		}
 	}()
@@ -97,7 +106,7 @@ func main() {
 				replies++
 			}
 		} else {
-			fmt.Fprintln(os.Stderr, response.err())
+			fmt.Fprintf(os.Stderr, "ResponseError: %v\n", response.err())
 		}
 	}
 	fmt.Println("Last reply received from server.")
@@ -109,6 +118,7 @@ func init() {
 	flag.IntVar(&options.port, "p", 6379, "port")
 	flag.StringVar(&options.password, "a", "", "password")
 	flag.IntVar(&options.buffer, "buffer", 0, "number of outstanding statements allowed before throttling")
+	flag.BoolVar(&options.pipe, "pipe", false, "transfers input from stdin to server")
 }
 
 /*

values.go

@@ -175,9 +175,12 @@ func readBulkString(prefix []byte, r io.Reader) (value, error) {
 
 	n += 2
 	b := make([]byte, n)
-	n_read, err := r.Read(b)
+	n_read, err := io.ReadFull(r, b)
 	switch err {
-	case io.EOF, nil:
+	case io.EOF:
+		fmt.Printf("saw eof after %d bytes looking for %d bytes in bulkstring\n", n_read, n)
+		fmt.Println(string(b))
+	case nil:
 		break
 	default:
 		return nil, fmt.Errorf("unable to read bulkstring in redis protocol: error on read: %v", err)