Examples of java.io.InputStream.mark()

java.io.InputStream.mark()
Set a Mark position in this InputStream. The parameter readLimit indicates how many bytes can be read before a mark is invalidated. Sending reset() will reposition the Stream back to the marked position provided readLimit has not been surpassed.
This default implementation does nothing and concrete subclasses must provide their own implementations. @param readlimit the number of bytes to be able to read before invalidating the mark.

            try {
                while (true) {
                    synchronized (is) {
                        // Mark the stream position so that other threads can
                        // reread the strea
                        is.mark(buf.length);
                        // Read one more byte than has already been read to
                        // force the stream to wait for input
                        bytesAvailable = is.available();
                        if (bytesAvailable < buf.length) {
                            bytesRead = is.read(buf, 0, bytesAvailable + 1);

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        } catch (RuntimeException e) {
            LOGGER.error(e.getMessage());
            throw e;
        }
        try {
            is.mark(256 * 1024);
            JarInputStream jar = new JarInputStream(is);
            Manifest m = jar.getManifest();
            if(m == null) {
                throw new BundleException("Manifest not present in the first entry of the zip " + bundleLocation);
            }

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            InputStream in = httpRequest.getInputStream();
            if (in != null) {
                // use a buffered input stream to find out whether there actually
                // is a request body
                InputStream bin = new BufferedInputStream(in);
                bin.mark(1);
                boolean isEmpty = -1 == bin.read();
                bin.reset();
                if (!isEmpty) {
                    requestDocument = DomUtil.parseDocument(bin);
                }

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        } catch (RuntimeException e) {
            LOGGER.error(e.getMessage());
            throw e;
        }
        try {
            is.mark(256 * 1024);
            JarInputStream jar = new JarInputStream(is);
            Manifest m = jar.getManifest();
            if(m == null) {
                throw new BundleException("Manifest not present in the first entry of the zip " + bundleLocation);
            }

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        tidy.setXHTML(true);
    } else {
        tidy.setXHTML(false);
    }
    tidy.setErrout(new PrintWriter(System.err));
    in.mark(65536000);




//    System.out.println(tidyCharEncoding);
    tidy.setCharEncoding(tidyCharEncoding);
/*    tidy.setIndentContent(false);

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                {
                    //we have to copy the classfile, because if it won't be enhanced,
                    //the OutputStream is empty and we have to re-read the InputStream,
                    //which is impossiblewith a ZipInputStream (no mark/reset)
                    in = openZipEntry (zip_in);
                    in.mark (Integer.MAX_VALUE);
                    ByteArrayOutputStream tmp = new ByteArrayOutputStream ();
                    if  (enhancer.enhanceClassFile (in, tmp))
                    {
                        enhanced = true;
                        byte [] bytes = tmp.toByteArray ();

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     */
    protected byte[] getBinaryRequestPayloadWithoutQueryParams(Request<?> request) {
        InputStream content = getBinaryRequestPayloadStreamWithoutQueryParams(request);


        try {
            content.mark(-1);
            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024 * 5];
            while (true) {
                int bytesRead = content.read(buffer);
                if (bytesRead == -1) break;

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    public void testMarkReset() throws IOException {
        File temp = File.createTempFile("test", null);
        TempFileInputStream.writeToFileAndClose(new ByteArrayInputStream(new byte[10]), temp);
        InputStream in = new BufferedInputStream(new TempFileInputStream(temp));
        in.mark(100);
        for (int i = 0; i < 10; i++) {
            assertEquals(0, in.read());
        }
        assertEquals(-1, in.read());
        in.reset();

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    byte[] big = newPreFilledByteArray(5);
    InputStream bin = new ByteArrayInputStream(big);
    InputStream lin = ByteStreams.limit(bin, 2);


    // also test available
    lin.mark(2);
    assertEquals(2, lin.available());
    int read = lin.read();
    assertEquals(big[0], read);
    assertEquals(1, lin.available());
    read = lin.read();

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    InputStream bin = new ByteArrayInputStream(big);
    InputStream lin = ByteStreams.limit(bin, 2);


    int read = lin.read();
    assertEquals(big[0], read);
    lin.mark(2);


    read = lin.read();
    assertEquals(big[1], read);
    read = lin.read();
    assertEquals(-1, read);

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