first commit

util/bits/bufio/bufio.go

@@ -0,0 +1,22 @@
+package bufio
+
+import (
+	"io"
+)
+
+type Reader struct {
+	buf [][]byte
+	R   io.ReadSeeker
+}
+
+func NewReaderSize(r io.ReadSeeker, size int) *Reader {
+	buf := make([]byte, size*2)
+	return &Reader{
+		R:   r,
+		buf: [][]byte{buf[0:size], buf[size:]},
+	}
+}
+
+func (self *Reader) ReadAt(b []byte, off int64) (n int, err error) {
+	return
+}