// data returned to just N bytes. Each call to Read
// updates N to reflect the new amount remaining.
// Read returns EOF when N <= 0 or when the underlying R returns EOF.
type HardLimitedReader struct {
	R io.Reader // underlying reader
	N int64     // max bytes remaining
}

func (l *HardLimitedReader) Read(p []byte) (n int, err error) {
	if l.N < 0 {
		return 0, ErrOverread
	}

	recordDelimiter []byte
	oneByte         []byte
	useOneByte      bool
}

func (rr *recordTransform) Read(p []byte) (n int, err error) {
	if rr.useOneByte {
		p[0] = rr.oneByte[0]
		rr.useOneByte = false
		n, err = rr.reader.Read(p[1:])
		n++
	} else {
		n, err = rr.reader.Read(p)
	}

	if err != nil {
		return n, err
	}

	// Do nothing if record-delimiter is already newline.

    }

    private static final Logger logger = Logger.getLogger(JarFileUtil.class);

    /**
     * Creates and returns a <code>JarFile</code> to read the specified JAR file.
     *
     * @param file the file path (must not be {@literal null})
     * @return a <code>JarFile</code> to read the specified JAR file
     */
    public static JarFile create(final String file) {
        assertArgumentNotNull("file", file);

        try {

    /**
     * Record start of a read request
     *
     * @param bytes number of bytes being requested
     */
    public void recordReadRequest(int bytes) {
        // Track that a read was requested
        rdmaReads.incrementAndGet();
    }

    /**
     * Record successful completion of a read request
     *
     * @param bytes number of bytes successfully read

     * @param len length of data to read
     * @return number of bytes read
     */
    protected abstract int readSetupWireFormat(byte[] buffer, int bufferIndex, int len);

    /**
     * Reads parameters from wire format
     * @param buffer source buffer
     * @param bufferIndex starting index in source buffer
     * @param len length of data to read
     * @return number of bytes read

		panic("Failed to acquire read lock")
	}
	// fmt.Println("1st read lock acquired, waiting...")

	drwm2 := NewDRWMutex(ds, "simplelock")
	ctx2, cancel2 := context.WithCancel(t.Context())
	if !drwm2.GetRLock(ctx2, cancel2, id, source, Options{Timeout: time.Second}) {
		panic("Failed to acquire read lock")
	}
	// fmt.Println("2nd read lock acquired, waiting...")

	go func() {

    @Override
    public PersistedToolchains read(File input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

        try (InputStream in = Files.newInputStream(input.toPath())) {
            InputSource source = InputSource.of(input.toString());
            return new PersistedToolchains(new MavenToolchainsStaxReader().read(in, isStrict(options), source));

@Singleton
public class DefaultMetadataReader implements MetadataReader {

    @Override
    public Metadata read(File input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

        return read(Files.newInputStream(input.toPath()), options);
    }

    @Override
    public Metadata read(Reader input, Map<String, ?> options) throws IOException {

            ChannelUtil.read(channel, buffer);
            return buffer.array();
        } finally {
            CloseableUtil.close(is);
        }
    }

    /**
     * Reads text from a file using the default encoding.
     *
     * @param path
     *            The file path. Must not be {@literal null} or empty.
     * @return The text read from the file.
     */

        }

        @Test
        @DisplayName("Should throw exception with buffer too small to read structure size")
        void testReadBytesWireFormatInsufficientBufferForStructureSize() {
            // Given
            byte[] buffer = new byte[1]; // Too small to read 2-byte structure size

            // When & Then