vendor/github.com/tendermint/go-wire/byteslice.go

   1 package wire
   2
   3 import (
   4         "io"
   5         "math"
   6
   7         cmn "github.com/tendermint/tmlibs/common"
   8 )
   9
  10 func WriteByteSlice(bz []byte, w io.Writer, n *int, err *error) {
  11         WriteVarint(len(bz), w, n, err)
  12         WriteTo(bz, w, n, err)
  13 }
  14
  15 func ReadByteSlice(r io.Reader, lmt int, n *int, err *error) []byte {
  16         length := ReadVarint(r, n, err)
  17         if *err != nil {
  18                 return nil
  19         }
  20         if length < 0 {
  21                 *err = ErrBinaryReadInvalidLength
  22                 return nil
  23         }
  24
  25         // check that length is less than the maximum slice size
  26         if length > math.MaxInt32 {
  27                 *err = ErrBinaryReadOverflow
  28                 return nil
  29         }
  30         if lmt != 0 && lmt < cmn.MaxInt(length, *n+length) {
  31                 *err = ErrBinaryReadOverflow
  32                 return nil
  33         }
  34
  35         /*      if length == 0 {
  36                 return nil // zero value for []byte
  37         }*/
  38
  39         buf := make([]byte, length)
  40         ReadFull(buf, r, n, err)
  41         return buf
  42 }