Android Open Source - lclock Data Fetcher

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License

The source code is released under:

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUC...

Java Source Code

package com.pilot51.lclock;
/*from www .j a v  a2 s  . c o m*/
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.Locale;

import android.util.Log;

/**
 * Class for downloading and parsing data.
 */
public class DataFetcher {
  static String downloadFile(String url) {
    InputStream input = null;
    String strdata = null;
    StringBuffer strbuff = new StringBuffer();
    int count;
    try {
      URL url2 = new URL(url);
      // download the file
      input = new BufferedInputStream(url2.openStream());
      byte data[] = new byte[1024];
      while ((count = input.read(data)) != -1) {
        strbuff.append(new String(data, 0, count));
      }
      strdata = strbuff.toString();
      strdata = strdata.replaceAll("\r\n", "\n");
      input.close();
    } catch (IOException e) {
      Log.e(Common.TAG, "Error downloading file!");
      e.printStackTrace();
    }
    return strdata;
  }

  static List<Event> parseSfn(String data) {
    List<Event> list = new ArrayList<Event>();
    int year = Calendar.getInstance().get(Calendar.YEAR);

    // Remove data before and after launch list and remove unwanted tags
    data = data.substring(data.indexOf("<div class=\"datename"), data.indexOf("</div>", data.lastIndexOf("missdescrip")) + 6)
        .replaceAll("</?span( [a-z]+=\"(?!launchdate|mission)[^\"]+\")?>|</?[BU]>|</?[aA][^>]*?>", "")
        .replaceAll("&#8217;", "'").replaceAll("&amp;", "&");

    while (data.contains("\"datename\"")) {
      Event event = new Event();

      // Isolate event from the rest of the HTML
      String eventData = data.substring(data.indexOf("<div class=\"datename"), data.indexOf("</div>", data.indexOf("missdescrip")) + 6);
      data = data.substring(data.indexOf("</div>", data.indexOf("missdescrip")) + 6, data.length());

      // Date
      int tmpIndex = eventData.indexOf("launchdate");
      event.setDay(eventData.substring(tmpIndex + 12, eventData.indexOf("<", tmpIndex)));
      event.setYear(year);
      event.setDate(event.getDay());

      // Vehicle
      tmpIndex = eventData.indexOf("mission");
      event.setVehicle(eventData.substring(tmpIndex + 9, eventData.indexOf(" ", tmpIndex)));

      // Mission / Payload
      event.setMission(eventData.substring(eventData.indexOf(" ", tmpIndex) + 2, eventData.indexOf("<", tmpIndex)));

      // Time
      tmpIndex = eventData.indexOf("missiondata");
      if (eventData.indexOf("time:", tmpIndex) != -1) {
        tmpIndex = eventData.indexOf("time:", tmpIndex) + 5;
      } else if (eventData.indexOf("window:", tmpIndex) != -1) {
        tmpIndex = eventData.indexOf("window:", tmpIndex) + 7;
      } else if (eventData.indexOf("times:", tmpIndex) != -1) {
        tmpIndex = eventData.indexOf("times:", tmpIndex) + 6;
      } else {
        tmpIndex = -1;
      }
      if (tmpIndex > 0) {
        event.setTime(eventData.substring(tmpIndex, eventData.indexOf("<br", tmpIndex)).replaceAll("\\.m\\.", "m").trim());
      }

      // Location
      tmpIndex = eventData.indexOf("missiondata");
      event.setLocation(eventData.substring(eventData.indexOf("site:", tmpIndex) + 5, eventData.indexOf("</div", tmpIndex)));

      // Description
      tmpIndex = eventData.indexOf("missdescrip");
      event.setDescription(eventData.substring(eventData.indexOf(">", tmpIndex) + 1, eventData.indexOf("</div", tmpIndex)));

      // Calendar
      CalendarAccuracyPair calPair = eventCal(event);
      Calendar cal = calPair.calendar;
      event.setCal(cal);
      event.setCalAccuracy(calPair.accuracy);

      if (cal.get(Calendar.YEAR) > year) {
        event.setYear(year = cal.get(Calendar.YEAR));
      }

      list.add(event);
    }
    return list;
  }

  /**
   * Creates a {@link Calendar} from string-based times in an {@link Event} object.
   * @param event The event from which to create the calendar. It does not get modified.
   * @return A {@link CalendarAccuracyPair} containing the calendar and the accuracy value for the calendar.
   */
  private static CalendarAccuracyPair eventCal(Event event) {
    final SimpleDateFormat sdf = new SimpleDateFormat("", Locale.ENGLISH);
    int calAccuracy;
    Calendar cal = Calendar.getInstance();
    cal.clear();
    try {
      boolean hasTime = true, hasDay = true, hasMonth = true;
      int year = event.getYear();
      String date = event.getDay().replace("Sept.", "Sep").replaceAll("\\?|[0-9]{1,2}/|NET|\\.", "").trim();
      String time = event.getTime();
      if (time.contentEquals("TBD")) {
        hasTime = false;
      }
      if (date.matches("[A-Za-z \\-]+")) {
        hasDay = false;
      }
      if (date.contentEquals("TBD")) {
        hasMonth = false;
      }
      time = time.replaceAll("Approx. |(\\-| and )[0-9]{4}(:[0-9]{2})?| on [0-9]{1,2}(st|nd|rd|th)| \\([^)]*\\)", "");
      if (time.matches("[0-9]{4}:[0-9]{2} [A-Z]+")) {
        sdf.applyPattern("HHmm:ss z MMM d yyyy");
        cal.setTime(sdf.parse(time + " " + date + " " + year));
        calAccuracy = ListActivity.ACC_SECOND;
      } else if (hasTime) {
        sdf.applyPattern("HHmm z MMM d yyyy");
        cal.setTime(sdf.parse(time + " " + date + " " + year));
        calAccuracy = ListActivity.ACC_MINUTE;
      } else if (hasDay) {
        sdf.applyPattern("MMM d yyyy");
        cal.setTime(sdf.parse(date + " " + year));
        calAccuracy = ListActivity.ACC_DAY;
      } else if (hasMonth) {
        sdf.applyPattern("MMM yyyy");
        cal.setTime(sdf.parse(date + " " + year));
        calAccuracy = ListActivity.ACC_MONTH;
      } else {
        if (year == Calendar.getInstance().get(Calendar.YEAR)) {
          cal.set(year, Calendar.DECEMBER, 31);
        } else {
          cal.set(Calendar.YEAR, year);
        }
        calAccuracy = ListActivity.ACC_YEAR;
      }
      Calendar cal2 = Calendar.getInstance();
      cal2.add(Calendar.MONTH, -1);
      if (cal.before(cal2)) {
        cal.add(Calendar.YEAR, 1);
      }
    } catch (ParseException e) {
      cal.clear();
      calAccuracy = ListActivity.ACC_ERROR;
      e.printStackTrace();
    }
    return new CalendarAccuracyPair(cal, calAccuracy);
  }

  private static class CalendarAccuracyPair {
    private Calendar calendar;
    private int accuracy;

    private CalendarAccuracyPair(Calendar calendar, int accuracy) {
      this.calendar = calendar;
      this.accuracy = accuracy;
    }
  }
}

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