gtsocial-umbx

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reader.go (692B)

      1 package byteutil
      2 
      3 import "bytes"
      4 
      5 // Reader wraps a bytes.Reader{} to provide Rewind() capabilities.
      6 type Reader struct {
      7 	B []byte
      8 	bytes.Reader
      9 }
     10 
     11 // NewReader returns a new Reader{} instance reset to b.
     12 func NewReader(b []byte) *Reader {
     13 	r := &Reader{}
     14 	r.Reset(b)
     15 	return r
     16 }
     17 
     18 // Reset resets the Reader{} to be reading from b and sets Reader{}.B.
     19 func (r *Reader) Reset(b []byte) {
     20 	r.B = b
     21 	r.Rewind()
     22 }
     23 
     24 // Rewind resets the Reader{} to be reading from the start of Reader{}.B.
     25 func (r *Reader) Rewind() {
     26 	r.Reader.Reset(r.B)
     27 }
     28 
     29 // ReadNopCloser wraps a Reader{} to provide nop close method.
     30 type ReadNopCloser struct {
     31 	Reader
     32 }
     33 
     34 func (*ReadNopCloser) Close() error {
     35 	return nil
     36 }