errTooMuch   = errors.New("gif: too much image data")
	errBadPixel  = errors.New("gif: invalid pixel value")
)

// If the io.Reader does not also have ReadByte, then decode will introduce its own buffering.
type reader interface {
	io.Reader
	io.ByteReader
}

// Masks etc.
const (
	// Fields.
	fColorTable         = 1 << 7
	fInterlace          = 1 << 6
	fColorTableBitsMask = 7

}

// NewReader creates a new trace reader.
func NewReader(r io.Reader) (*Reader, error) {
	br := bufio.NewReader(r)
	v, err := version.ReadHeader(br)
	if err != nil {
		return nil, err
	}
	switch v {
	case version.Go111, version.Go119, version.Go121:
		tr, err := oldtrace.Parse(br, v)
		if err != nil {
			return nil, err
		}
		return &Reader{
			go121Events: convertOldFormat(tr),
		}, nil

// NewMonitoredReader returns reference to a monitored reader that throttles reads to configured bandwidth for the
// bucket.
func NewMonitoredReader(ctx context.Context, m *Monitor, r io.Reader, opts *MonitorReaderOptions) *MonitoredReader {
	reader := MonitoredReader{
		r:        r,
		throttle: m.throttle(opts.BucketOptions),
		m:        m,
		opts:     opts,
		ctx:      ctx,
	}
	reader.m.init(opts.BucketOptions)
	return &reader

Thai Nguyen <******@****.***> 1709597042 -0800

import java.io.IOException;
import java.io.Reader;
import java.util.Iterator;
import javax.annotation.CheckForNull;

/**
 * A {@link Reader} that concatenates multiple readers.
 *
 * @author Bin Zhu
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
class MultiReader extends Reader {
  private final Iterator<? extends CharSource> it;

import java.io.IOException;
import java.io.Reader;
import java.util.Iterator;
import javax.annotation.CheckForNull;

/**
 * A {@link Reader} that concatenates multiple readers.
 *
 * @author Bin Zhu
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
class MultiReader extends Reader {
  private final Iterator<? extends CharSource> it;

    }

    /**
     *
     * @param reader a reader object.
     * @param strict a strict object.
     * @throws IOException IOException if any.
     * @throws XMLStreamException XMLStreamException if
     * any.
     * @return ${root.name}
     */
    public ${root.name} read(Reader reader, boolean strict) throws IOException, XMLStreamException {

func (r errorReader) Close() error {
	return r.error
}

// readSeekerFromReader converts an io.Reader into an io.ReadSeeker.
// In general Seek may not be efficient, but it is optimized for
// common cases such as seeking to the end to find the length of the
// data.
type readSeekerFromReader struct {
	reset  func() (io.Reader, error)
	r      io.Reader
	size   int64
	offset int64
}

func (r *readSeekerFromReader) start() {

	29, 22, 15, 23, 30, 37, 44, 51,
	58, 59, 52, 45, 38, 31, 39, 46,
	53, 60, 61, 54, 47, 55, 62, 63,
}

// Deprecated: Reader is not used by the [image/jpeg] package and should
// not be used by others. It is kept for compatibility.
type Reader interface {
	io.ByteReader
	io.Reader
}

// bits holds the unprocessed bits that have been taken from the byte-stream.

const (
	dsStart = iota
	dsSeenIHDR
	dsSeenPLTE
	dsSeentRNS
	dsSeenIDAT
	dsSeenIEND
)

const pngHeader = "\x89PNG\r\n\x1a\n"

type decoder struct {
	r             io.Reader
	img           image.Image
	crc           hash.Hash32
	width, height int
	depth         int
	palette       color.Palette
	cb            int
	stage         int
	idatLength    uint32