Examples of java.io.InputStream.markSupported()

java.io.InputStream.markSupported()
Answers a boolean indicating whether or not this InputStream supports mark() and reset(). This class provides a default implementation which answers false. @return true if mark() and reset() are supported,false otherwise.

    return new InputStream() {
      @Override  public int read() throws IOException { return delegee.read();  }
      @Override  public int read(byte[] b) throws IOException { return delegee.read(b);  }
      @Override  public int available() throws IOException {  return delegee.available();  }
      @Override  public synchronized void mark(int readlimit) { delegee.mark(readlimit);  }
      @Override  public boolean markSupported() { return delegee.markSupported(); }
      @Override  public int read(byte[] b, int off, int len) throws IOException { return delegee.read(b, off, len); }
      @Override  public synchronized void reset() throws IOException {  delegee.reset(); }
      @Override  public long skip(long n) throws IOException {  return delegee.skip(n);  }
      @Override  
      public void close() throws IOException {

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  throws IOException {
    InputStream in = fs.open(p);
    try {
      // I need to be able to move back in the stream if this is not a pb serialization so I can
      // do the Writable decoding instead.
      in = in.markSupported()? in: new BufferedInputStream(in);
      int pblen = ProtobufUtil.lengthOfPBMagic();
      in.mark(pblen);
      byte [] pbuf = new byte[pblen];
      int read = in.read(pbuf);
      if (read != pblen) throw new IOException("read=" + read + ", wanted=" + pblen);

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                            // Couldn't open the stream, go to next entry.
                            openFailed = true;
                            continue;
                        }


                        if (!is.markSupported())
                            // Doesn't support mark so wrap with
                            // BufferedInputStream that does.
                            is = new BufferedInputStream(is);
                    }

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        if (progressListenerCallbackExecutor != null) {
            input = new ProgressReportingInputStream(input, progressListenerCallbackExecutor);
            fireProgressEvent(progressListenerCallbackExecutor, ProgressEvent.STARTED_EVENT_CODE);
        }


        if (!input.markSupported()) {
            int streamBufferSize = Constants.DEFAULT_STREAM_BUFFER_SIZE;
            String bufferSizeOverride = System.getProperty("com.amazonaws.sdk.s3.defaultStreamBufferSize");
            if (bufferSizeOverride != null) {
                try {
                    streamBufferSize = Integer.parseInt(bufferSizeOverride);

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            if (content instanceof StringInputStream) {
                return content;
            }


            if (!content.markSupported()) {
                throw new AmazonClientException("Unable to read request payload to sign request.");
            }


            return request.getContent();
        } catch (Exception e) {

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  public void testReadSingleByte() throws Exception {
    ByteSource source = newByteSource(0, 10);
    ByteSource joined = ByteSource.concat(source, source);
    assertEquals(20, joined.size());
    InputStream in = joined.openStream();
    assertFalse(in.markSupported());
    assertEquals(10, in.available());
    int total = 0;
    while (in.read() != -1) {
      total++;
    }

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    private InputStream getStream(int length) {
        Reader src = new LoopingAlphabetReader(length,
                                        CharAlphabet.modernLatinLowercase());
        InputStream is = new ReaderToUTF8Stream(
                src, length, 0, "CLOB", new ClobStreamHeaderGenerator(false));
        assertTrue("The stream doesn't support mark/reset", is.markSupported());
        return is;
    }


    /**
     * Checks the beginning of the stream, which is expected to consist of five

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            }
            
        }
        else { badDRDAType( ndrdaType ); }
    if (! is.markSupported()) {
        is = new BufferedInputStream(is);
        }
        
    this.binaryInputStream=is;
    }

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            hdrInfo = new HeaderInfo(hdrLen, valueLength);
            // Make sure the stream is correctly positioned.
            rewindStream((InputStream)in, hdrLen);
        } else {
            final InputStream srcIn = (InputStream)in;
            final boolean markSet = srcIn.markSupported();
            if (markSet) {
                srcIn.mark(MAX_STREAM_HEADER_LENGTH);
            }
            byte[] header = new byte[MAX_STREAM_HEADER_LENGTH];
            int read = in.read(header);

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             * specified a content type.
             */
            metadata.setContentType(Mimetypes.MIMETYPE_OCTET_STREAM);
        }


        if (!input.markSupported()) {
            input = new RepeatableInputStream(input, Constants.DEFAULT_STREAM_BUFFER_SIZE);
        }


        populateRequestMetadata(request, metadata);
        signRequest(request, HttpMethodName.PUT, bucketName, key);

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