Examples of ucar.unidata.io.RandomAccessFile.skipBytes()

ucar.unidata.io.RandomAccessFile.skipBytes()
Skips exactly n bytes of input. This method blocks until all the bytes are skipped, the end of the stream is detected, or an exception is thrown. @param n the number of bytes to be skipped. @return the number of bytes skipped, which is always n. @throws EOFException if this file reaches the end before skippingall the bytes. @throws IOException if an I/O error occurs.

    PrintStream ps = System.out;
    String infile = args[0];
    raf = new RandomAccessFile(infile, "r");
    raf.order(RandomAccessFile.BIG_ENDIAN);
    // This is the GDS offset
    raf.skipBytes(Integer.parseInt(args[1]));
    // backup to PDS; most of the time it's only 28 bytes
    //raf.skipBytes( -28 ); //TODO: check
    Grib1ProductDefinitionSection pds = new Grib1ProductDefinitionSection(raf);
    Grib1Pds gpv = pds.pdsVars;
    ps.println("Length = " + gpv.getLength());

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        if (lookForHeader) {
          raf.read(b);
          test = new String(b);
          if (test.equals(Level2VolumeScan.ARCHIVE2) || test.equals(Level2VolumeScan.AR2V0001)) {
            System.out.println("  found header= " + test);
            raf.skipBytes(16);
            lookForHeader = false;
          } else {
            raf.skipBytes(-8);
          }
        }

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          if (test.equals(Level2VolumeScan.ARCHIVE2) || test.equals(Level2VolumeScan.AR2V0001)) {
            System.out.println("  found header= " + test);
            raf.skipBytes(16);
            lookForHeader = false;
          } else {
            raf.skipBytes(-8);
          }
        }


        try {
          numCompBytes = raf.readInt();

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          System.out.println("\n--last block " + numCompBytes);
          numCompBytes = -numCompBytes;
          if (!lookForHeader) eof = true;
        }


        raf.skipBytes(numCompBytes);
      }
    } catch (EOFException e) {
      e.printStackTrace();
    }

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          ga = f.readFloat();
          gb = f.readFloat();


          // skip ahead by gridsize bytes
          f.skipBytes(gridsize);
          min = -(125.0f + gb) / ga;
          max = (125.0f-gb) / ga;
          if (min < MinVal[iv])  MinVal[iv] = min;
          if (max > MaxVal[iv])  MaxVal[iv] = max;
        }

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        if (lookForHeader) {
          raf.read(b);
          test = new String(b);
          if (test.equals(Cinrad2VolumeScan.ARCHIVE2) || test.equals(Cinrad2VolumeScan.AR2V0001)) {
            System.out.println("  found header= " + test);
            raf.skipBytes(16);
            lookForHeader = false;
          } else {
            raf.skipBytes(-8);
          }
        }

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          if (test.equals(Cinrad2VolumeScan.ARCHIVE2) || test.equals(Cinrad2VolumeScan.AR2V0001)) {
            System.out.println("  found header= " + test);
            raf.skipBytes(16);
            lookForHeader = false;
          } else {
            raf.skipBytes(-8);
          }
        }


        try {
          numCompBytes = raf.readInt();

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          System.out.println("\n--last block " + numCompBytes);
          numCompBytes = -numCompBytes;
          if (!lookForHeader) eof = true;
        }


        raf.skipBytes(numCompBytes);
      }
    } catch (EOFException e) {
      e.printStackTrace();
    }

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          V5Dassert(length == 4);
          if (Projection == 0 || Projection == 1 || Projection == 4) {
            ProjArgs[0] = f.readFloat();
          }
          else {
            f.skipBytes(4);
          }
          break;
        case TAG_WESTBOUND:
          V5Dassert(length == 4);
          if (Projection == 0 || Projection == 1 || Projection == 4) {

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          V5Dassert(length == 4);
          if (Projection == 0 || Projection == 1 || Projection == 4) {
            ProjArgs[1] = f.readFloat();
          }
          else {
            f.skipBytes(4);
          }
          break;
        case TAG_ROWINC:
          V5Dassert(length == 4);
          if (Projection == 0 || Projection == 1 || Projection == 4) {

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