Examples of java.io.DataInputStream.reset()

java.io.DataInputStream.reset()
Repositions this stream to the position at the time the mark method was last called on this input stream.
This method simply performs in.reset().
Stream marks are intended to be used in situations where you need to read ahead a little to see what's in the stream. Often this is most easily done by invoking some general parser. If the stream is of the type handled by the parse, it just chugs along happily. If the stream is not of that type, the parser should toss an exception when it fails. If this happens within readlimit bytes, it allows the outer code to reset the stream and try another parser. @exception IOException if the stream has not been marked or if themark has been invalidated.

        logVersion = in.readByte();
      } catch (EOFException e) {
        available = false;
      }
      if (available) {
        in.reset();
        logVersion = in.readInt();
        if (logVersion < FSConstants.LAYOUT_VERSION) // future version
          throw new IOException(
                          "Unexpected version of the file system log file: "
                          + logVersion + ". Current version = "

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        logVersion = in.readByte();
      } catch (EOFException e) {
        available = false;
      }
      if (available) {
        in.reset();
        logVersion = in.readInt();
        if (logVersion < FSConstants.LAYOUT_VERSION) // future version
          throw new IOException(
                          "Unexpected version of the file system log file: "
                          + logVersion + ". Current version = "

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        msg += sb.append("]");
      }


      LOG.warn(msg, t);
      if (isTolerationEnabled) {
        in.reset(); //reset to the beginning position of this transaction
      } else {
        //edit log toleration feature is disabled
        MetaRecoveryContext.editLogLoaderPrompt(msg, recovery);
      }
    } finally {

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        }


        if ((magic != WaveFileFormat.RIFF_MAGIC) || (waveMagic != WaveFileFormat.WAVE_MAGIC)) {
            // not WAVE, throw UnsupportedAudioFileException
            if (doReset) {
                dis.reset();
            }
            throw new UnsupportedAudioFileException("not a WAVE file");
        }


        // find and read the "fmt" chunk

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        if (! (magic == AuFileFormat.AU_SUN_MAGIC) || (magic == AuFileFormat.AU_DEC_MAGIC) ||
            (magic == AuFileFormat.AU_SUN_INV_MAGIC) || (magic == AuFileFormat.AU_DEC_INV_MAGIC) ) {


            // not AU, reset the stream, place into exception, throw exception
            dis.reset();
            throw new UnsupportedAudioFileException("not an AU file");
        }


        if ((magic == AuFileFormat.AU_SUN_MAGIC) || (magic == AuFileFormat.AU_DEC_MAGIC)) {
            bigendian = true;        // otherwise little-endian

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                        SamplePerUnit = 8;
                        break;
            */
        default:
                // unsupported filetype, throw exception
                dis.reset();
                throw new UnsupportedAudioFileException("not a valid AU file");
        }


        frameSize = calculatePCMFrameSize(sampleSizeInBits, channels);
        //$$fb 2002-11-02: fix for 4629669: AU file reader: problems with empty files

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                                  channels, frameSize, (float)frameRate, bigendian);


        fileFormat = new AuFileFormat( AudioFileFormat.Type.AU, dataSize+headerSize,
                                       format, length);


        dis.reset(); // Throws IOException
        return fileFormat;


    }

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        // $$fb: fix for 4369044: javax.sound.sampled.AudioSystem.getAudioInputStream() works wrong with Cp037
        if (magic != AiffFileFormat.AIFF_MAGIC) {
            // not AIFF, throw exception
            if (doReset) {
                dis.reset();
            }
            throw new UnsupportedAudioFileException("not an AIFF file");
        }


        int length = dis.readInt();

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        data.mark(b.length);
        data.readFully(b);
        if (b[0] == 'C' && b[1] == 'W' && b[2] == 'S' ||
                    b[0] == 'F' && b[1] == 'W' && b[2] == 'S')
        {
          data.reset();
          return true;
        }
        else
        {
          data.reset();

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          data.reset();
          return true;
        }
        else
        {
          data.reset();
          return false;
        }
      }
      catch (IOException e)
      {

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