Function ReadArrayHeaderBytes

msgp/read_bytes.go:229–264

ReadArrayHeaderBytes attempts to read the array header size off of 'b' and return the size and remaining bytes. Possible errors: - [ErrShortBytes] (too few bytes) - [TypeError] (not an array)

(b []byte)

//   - [ErrShortBytes] (too few bytes)
//   - [TypeError] (not an array)
func ReadArrayHeaderBytes(b []byte) (sz uint32, o []byte, err error) {
	if len(b) < 1 {
		return 0, nil, ErrShortBytes
	}
	lead := b[0]
	b = b[1:]
	if isfixarray(lead) {
		sz = uint32(rfixarray(lead))
		o = b
		return
	}

	switch lead {
	case marray16:
		if len(b) < 2 {
			err = ErrShortBytes
			return
		}
		sz = uint32(big.Uint16(b))
		o = b[2:]
		return

	case marray32:
		if len(b) < 4 {
			err = ErrShortBytes
			return
		}
		sz = big.Uint32(b)
		o = b[4:]
		return

	default:
		err = badPrefix(ArrayType, lead)
		return
	}
}

// ReadBytesHeader reads the 'bin' header size
// off of 'b' and returns the size and remaining bytes.