Function encodeChunk

core/os/android/binaryxml/decode.go:171–189

encodeChunk takes functions that output chunk-specific header and data to a writer, and then uses them to compute header and chunk sizes, as well as writing the whole chunk to a byte array, which is then returned.

(chunkType uint16, headerf func(w binary.Writer), dataf func(w binary.Writer))

// encodeChunk takes functions that output chunk-specific header and data to a writer, and then uses them to
// compute header and chunk sizes, as well as writing the whole chunk to a byte array, which is then returned.
func encodeChunk(chunkType uint16, headerf func(w binary.Writer), dataf func(w binary.Writer)) []byte {
	var headerBuffer bytes.Buffer
	headerf(endian.Writer(&headerBuffer, device.LittleEndian))
	headerBytes := headerBuffer.Bytes()

	var dataBuffer bytes.Buffer
	dataf(endian.Writer(&dataBuffer, device.LittleEndian))
	dataBytes := dataBuffer.Bytes()

	var chunkBuffer bytes.Buffer
	w := endian.Writer(&chunkBuffer, device.LittleEndian)
	w.Uint16(chunkType)
	w.Uint16(uint16(len(headerBytes) + 8))
	w.Uint32(uint32(len(headerBytes) + len(dataBytes) + 8))
	w.Data(headerBytes)
	w.Data(dataBytes)

	return chunkBuffer.Bytes()
}