//   - BytesScanned => Number of bytes that have been processed before being uncompressed (if the file is compressed).
//   - BytesProcessed => Number of bytes that have been processed after being uncompressed (if the file is compressed).
//   - BytesReturned => Current number of bytes of records payload data returned by S3.
//
// For uncompressed files, BytesScanned and BytesProcessed are equal.
//
// Example:
//

	// ReadResponse nor Response.Write ever closes a connection.
	Close bool

	// Uncompressed reports whether the response was sent compressed but
	// was decompressed by the http package. When true, reading from
	// Body yields the uncompressed content instead of the compressed
	// content actually set from the server, ContentLength is set to -1,

		_, x, y, _ := GenerateKey(curve, rand.Reader)
		b.Run("Uncompressed", func(b *testing.B) {
			b.ReportAllocs()
			for i := 0; i < b.N; i++ {
				buf := Marshal(curve, x, y)
				xx, yy := Unmarshal(curve, buf)
				if xx.Cmp(x) != 0 || yy.Cmp(y) != 0 {
					b.Error("Unmarshal output different from Marshal input")
				}
			}
		})
		b.Run("Compressed", func(b *testing.B) {
			b.ReportAllocs()

		}

		code := result.Get("status").Int()

		uncompressed := false
		if ascii.EqualFold(header.Get("Content-Encoding"), "gzip") {
			// The fetch api will decode the gzip, but Content-Encoding not be deleted.
			header.Del("Content-Encoding")
			header.Del("Content-Length")
			contentLength = -1
			uncompressed = true
		}

		respCh <- &Response{

			return r.makeError(relativeOffset, "too many uncompressed bytes in frame")
		}
		r.remainingFrameSize -= uint64(len(r.buffer))
	}

	if r.hasChecksum {
		r.checksum.update(r.buffer)
	}

	if !lastBlock {
		r.window.save(r.buffer)
	} else {
		if !r.frameSizeUnknown && r.remainingFrameSize != 0 {
			return r.makeError(relativeOffset, "not enough uncompressed bytes for frame")
		}

			return i
		}
	}
	return -1
}

// loadTzinfoFromDirOrZip returns the contents of the file with the given name
// in dir. dir can either be an uncompressed zip file, or a directory.
func loadTzinfoFromDirOrZip(dir, name string) ([]byte, error) {
	if len(dir) > 4 && dir[len(dir)-4:] == ".zip" {
		return loadTzinfoFromZip(dir, name)
	}
	if dir != "" {

//
// • The total size in bytes of a module zip file may be at most [MaxZipFile]
// bytes (500 MiB). The total uncompressed size of the files within the
// zip may also be at most [MaxZipFile] bytes.
//
// • Each file's uncompressed size must match its declared 64-bit uncompressed
// size in the zip file header.
//
// • If the zip contains files named "<module>@<version>/go.mod" or

			f.stepState = stateDict
			return
		}
		goto readLiteral
	}
}

// Copy a single uncompressed data block from input to output.
func (f *decompressor) dataBlock() {
	// Uncompressed.
	// Discard current half-byte.
	f.nb = 0
	f.b = 0

	// Length then ones-complement of length.
	nr, err := io.ReadFull(f.r, f.buf[0:4])
	f.roffset += int64(nr)

	p.z.One()
	return p
}

// Set sets p = q and returns p.
func (p *P256Point) Set(q *P256Point) *P256Point {
	p.x.Set(q.x)
	p.y.Set(q.y)
	p.z.Set(q.z)
	return p
}

// SetBytes sets p to the compressed, uncompressed, or infinity value encoded in
// b, as specified in SEC 1, Version 2.0, Section 2.3.4. If the point is not on
// the curve, it returns nil and an error, and the receiver is unchanged.
// Otherwise, it returns p.

	p.x, p.y, p.z = q.x, q.y, q.z
	return p
}

const p256ElementLength = 32
const p256UncompressedLength = 1 + 2*p256ElementLength
const p256CompressedLength = 1 + p256ElementLength

// SetBytes sets p to the compressed, uncompressed, or infinity value encoded in
// b, as specified in SEC 1, Version 2.0, Section 2.3.4. If the point is not on
// the curve, it returns nil and an error, and the receiver is unchanged.
// Otherwise, it returns p.