package de.mpg.mpiwg.berlin.mpdl.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Date;
import java.util.Properties;

public class Util {

  public Properties getProperties(String fullFileName) {
    Properties props = new Properties(); 
    try {
      File file = new File(fullFileName);
      FileInputStream in = new FileInputStream(file);
      props.load(in);
    } catch (IOException e) {
    }
    return props;
  }
  
  public String toYearStr(String inputStr) {
    String retYearStr = inputStr.trim();
    int index = inputStr.indexOf("-");
    if (index > 0) {
      retYearStr = inputStr.substring(0, index);
      retYearStr = retYearStr.trim();
    }
    try {
      Integer year = new Integer(retYearStr);
      if (year < 10000 || year > 2500)
        retYearStr = null;
    } catch (NumberFormatException e) {
      retYearStr = null;
    }
    return retYearStr;
  }

  public Double getSecondWithMillisecondsBetween(Date begin, Date end) {
    long beginMS = begin.getTime();
    long endMS = end.getTime();
    long elapsedSeconds = (endMS - beginMS) / 1000;
    long elapsedMilliSecondsAfterSeconds1 = (endMS - beginMS) - (elapsedSeconds * 1000);
    Double seconds = new Double(elapsedSeconds + "." + elapsedMilliSecondsAfterSeconds1); 
    return seconds;
  }
 
}