return
			}
			next, nextErr = r.nextSplit(csvSplitSize, r.bufferPool.Get().([]byte))
		}
	}()

	// Start parsers
	for i := 0; i < runtime.GOMAXPROCS(0); i++ {
		go func() {
			for in := range r.input {
				if len(in.input) == 0 {
					in.dst <- nil
					continue
				}
				dst, ok := r.csvDstPool.Get().([][]string)
				if !ok {
					dst = make([][]string, 0, 1000)
				}

					CalculatedSHA256: hex.EncodeToString(sum),
				}
			}
		}
		if r.contentHasher != nil {
			if r.contentHash.Type.Trailing() {
				var err error
				r.contentHash.Encoded = r.trailer.Get(r.contentHash.Type.Key())
				r.contentHash.Raw, err = base64.StdEncoding.DecodeString(r.contentHash.Encoded)
				if err != nil || len(r.contentHash.Raw) == 0 {
					return 0, ChecksumMismatch{Got: r.contentHash.Encoded}
				}

}

// readGNUSparseMap0x1 reads the sparse map as stored in GNU's PAX sparse format
// version 0.1. The sparse map is stored in the PAX headers.
func readGNUSparseMap0x1(paxHdrs map[string]string) (sparseDatas, error) {
	// Get number of entries.
	// Use integer overflow resistant math to check this.
	numEntriesStr := paxHdrs[paxGNUSparseNumBlocks]
	numEntries, err := strconv.ParseInt(numEntriesStr, 10, 0) // Intentionally parse as native int