Examples of org.apache.commons.io.input.BoundedInputStream

org.apache.commons.io.input.BoundedInputStream
This is a stream that will only supply bytes up to a certain length - if its position goes above that, it will stop.
This is useful to wrap ServletInputStreams. The ServletInputStream will block if you try to read content from it that isn't there, because it doesn't know whether the content hasn't arrived yet or whether the content has finished. So, one of these, initialized with the Content-length sent in the ServletInputStream's header, will stop it blocking, providing it's been sent with a correct content length. @version $Id: BoundedInputStream.java 1586342 2014-04-10 15:36:29Z ggregory $ @since 2.0

            long length = randomAccessFile.length() - header.getMp3StartByte();
            if (new String(tag).equals("TAG")) {
                length -= 128;
            }
            randomAccessFile.seek(header.getMp3StartByte());
            InputStream is = new BoundedInputStream(new RandomAccessFileInputstream(randomAccessFile), length);
            MessageDigest m = MessageDigest.getInstance("MD5");
            byte[] buffer = new byte[8192];
            int read;
            while ((read = is.read(buffer)) > 0) {
                m.update(buffer, 0, read);
            }
            randomAccessFile.close();
            return new BigInteger(1, m.digest()).toString(16) + String.format("-%08x", length);
        } catch (TagException e) {

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      final long streamlength = Long.parseLong(cl);
      fileLength = startPos + streamlength;


      // Java has a bug with >2GB request streams.  It won't bounds check
      // the reads so the transfer blocks until the server times out
      in = new BoundedInputStream(in, streamlength);
    }


    return in;
  }

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        writer.write(fileType);
        writer.write("\nLogLength:");
        writer.write(fileLengthStr);
        writer.write("\nLog Contents:\n");
        // ByteLevel
        BoundedInputStream bis =
            new BoundedInputStream(valueStream, fileLength);
        InputStreamReader reader = new InputStreamReader(bis);
        int currentRead = 0;
        int totalRead = 0;
        while ((currentRead = reader.read(cbuf, 0, bufferSize)) != -1) {
          writer.write(cbuf);

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        parseMessage();
        long limit = getBodyStartOctet() -2;
        if (limit < 0) {
            limit = 0;
        }
        return new BoundedInputStream(getFullContent(), limit);


    }

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     */
    public InputStream getInputStream() throws IOException {
        // wrap the streams in a BoundedInputStream to make sure it really match with the stored size.
        switch (type) {
        case Full:
            return new BoundedInputStream(ResultUtils.toInput(m), size());
        default:
            return new BoundedInputStream(m.getBodyContent(), size());
        }
       
    }

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    public InputStream getHeaderContent() throws IOException {
        long limit = getBodyStartOctet() -2;
        if (limit < 0) {
            limit = 0;
        }
        return new BoundedInputStream(getFullContent(), limit);
    }

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        writer.write(fileType);
        writer.write("\nLogLength:");
        writer.write(fileLengthStr);
        writer.write("\nLog Contents:\n");
        // ByteLevel
        BoundedInputStream bis =
            new BoundedInputStream(valueStream, fileLength);
        InputStreamReader reader = new InputStreamReader(bis);
        int currentRead = 0;
        int totalRead = 0;
        while ((currentRead = reader.read(cbuf, 0, bufferSize)) != -1) {
          writer.write(cbuf, 0, currentRead);

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        writer.write(fileType);
        writer.write("\nLogLength:");
        writer.write(fileLengthStr);
        writer.write("\nLog Contents:\n");
        // ByteLevel
        BoundedInputStream bis =
            new BoundedInputStream(valueStream, fileLength);
        InputStreamReader reader = new InputStreamReader(bis);
        int currentRead = 0;
        int totalRead = 0;
        while ((currentRead = reader.read(cbuf, 0, bufferSize)) != -1) {
          writer.write(cbuf, 0, currentRead);

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      try {
        String logType = valueStream.readUTF();
        String logLengthStr = valueStream.readUTF();
        currentLogLength = Long.parseLong(logLengthStr);
        currentLogData =
            new BoundedInputStream(valueStream, currentLogLength);
        currentLogData.setPropagateClose(false);
        currentLogISR = new InputStreamReader(currentLogData);
        currentLogType = logType;
      } catch (EOFException e) {
      }

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  @Override
  public InputStream getInputStream() throws IOException {
    FSDataInputStream inputStream = localFS.open(inputFile);
    inputStream.seek(startOffset);
    return new BoundedInputStream(inputStream, compressedSize);
  }

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