Hulk did something

[bytom/vapor.git] / vendor / github.com / tendermint / go-wire / byteslice.go

diff --git a/vendor/github.com/tendermint/go-wire/byteslice.go b/vendor/github.com/tendermint/go-wire/byteslice.go
new file mode 100644 (file)
index 0000000..721c94b
--- /dev/null
+++ b/vendor/github.com/tendermint/go-wire/byteslice.go
@@ -0,0 +1,42 @@
+package wire
+
+import (
+       "io"
+       "math"
+
+       cmn "github.com/tendermint/tmlibs/common"
+)
+
+func WriteByteSlice(bz []byte, w io.Writer, n *int, err *error) {
+       WriteVarint(len(bz), w, n, err)
+       WriteTo(bz, w, n, err)
+}
+
+func ReadByteSlice(r io.Reader, lmt int, n *int, err *error) []byte {
+       length := ReadVarint(r, n, err)
+       if *err != nil {
+               return nil
+       }
+       if length < 0 {
+               *err = ErrBinaryReadInvalidLength
+               return nil
+       }
+
+       // check that length is less than the maximum slice size
+       if length > math.MaxInt32 {
+               *err = ErrBinaryReadOverflow
+               return nil
+       }
+       if lmt != 0 && lmt < cmn.MaxInt(length, *n+length) {
+               *err = ErrBinaryReadOverflow
+               return nil
+       }
+
+       /*      if length == 0 {
+               return nil // zero value for []byte
+       }*/
+
+       buf := make([]byte, length)
+       ReadFull(buf, r, n, err)
+       return buf
+}