Sierra Chart SCID Format Reader in Java

SCIDReader.java

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.sql.Date;
import java.util.Calendar;

public class SCIDReader {

	private static boolean RUNNING = true;

	public static void main(String[] args) throws IOException, InterruptedException {
		File f = new File("/home/vlad/.wine/drive_c/SierraChart/Data/EURUSD.scid");
		FileInputStream fis = new FileInputStream(f);

		DataInputStream ds = new DataInputStream(fis);

		byte[] header = new byte[4];
		byte[] osm = new byte[4];
		ds.read(header);
		System.out.println(new String(header));

		ds.read(header);
		System.out.println("Header Size: " + getUInt32(header));

		ds.read(header);
		System.out.println("Record Size: " + getUInt32(header));

		ds.skipBytes(56 - (4 * 3));

		double dt;
		float open;
		float high;
		float low;
		float close;

		long numTrades;
		long totalVolume;
		long bidVolume;
		long askVolume;

		long start = System.currentTimeMillis();
		while (RUNNING) {
			while (ds.available() == 0) {
				// Tail the file
				System.out.print(".");
				Thread.sleep(100);
			}
			dt = Double.longBitsToDouble(Long.reverseBytes(ds.readLong()));
			open = reverse(ds.readFloat());
			high = reverse(ds.readFloat());
			low = reverse(ds.readFloat());
			close = reverse(ds.readFloat());

			ds.read(osm);
			numTrades = getUInt32(osm);
			ds.read(osm);
			totalVolume = getUInt32(osm);
			ds.read(osm);
			bidVolume = getUInt32(osm);
			ds.read(osm);
			askVolume = getUInt32(osm);

			System.out.println(new Date(convertWindowsTimeToMilliseconds(dt)));
			System.out.format(
					"%.4f Open: %.4f High: %.4f Low: %.4f Close: %.4f Trades: %4d TotalVol: %4d Bid/Ask %3d / %3d\n",
					dt, open, high, low, close, numTrades, totalVolume, bidVolume, askVolume);

		}
		System.out.println(System.currentTimeMillis() - start);

		ds.close();

	}

	/**
	 * Thanks to @see http://stackoverflow.com/a/13203649
	 */
	public static long getUInt32(byte[] bytes) {
		long value = ((bytes[0] & 0xFF) << 0) | ((bytes[1] & 0xFF) << 8) | ((bytes[2] & 0xFF) << 16)
				| ((bytes[3] & 0xFF) << 24);
		return value;
	}

	public static float reverse(float x) {
		return ByteBuffer.allocate(4).order(ByteOrder.BIG_ENDIAN).putFloat(x).order(ByteOrder.LITTLE_ENDIAN)
				.getFloat(0);
	}

	/**
	 * Thanks to @see
	 * http://svn.codehaus.org/groovy/modules/scriptom/branches/SCRIPTOM
	 * -1.5.4-ANT/src/com/jacob/com/DateUtilities.java
	 */
	static public long convertWindowsTimeToMilliseconds(double comTime) {
		long result = 0;

		comTime = comTime - 25569D;
		Calendar cal = Calendar.getInstance();
		result = Math.round(86400000L * comTime) - cal.get(Calendar.ZONE_OFFSET);
		cal.setTime(new Date(result));
		result -= cal.get(Calendar.DST_OFFSET);

		return result;
	}

}