feat: add writer

spb.go

@@ -2,41 +2,6 @@ package spb
 
 import "io"
 
-func ReadNum(r io.Reader) (n uint32, cnt uint32, err error) {
-	var buf [1]byte
-	for cnt < 5 {
-		_, err = r.Read(buf[:])
-		if err != nil {
-			return
-		}
-		n |= uint32(buf[0]&0x7f) << (7 * cnt)
-		cnt++
-		if buf[0]&0x80 == 0 {
-			break
-		}
-	}
-	return
-}
-
-/*
-func WriteNum(w io.Writer, n uint32) (cnt int, err error) {
-	var buf [1]byte
-	for n > 0 {
-		buf[0] = uint8(n & 0x7f)
-		if n>>7 > 0 {
-			buf[0] |= 0x80
-		}
-		_, err = w.Write(buf[:])
-		if err != nil {
-			return
-		}
-		n >>= 7
-		cnt++
-	}
-	return
-}
-*/
-
 type SimplePB struct {
 	StructLen, RealLen uint32
 	Target             [][]byte