DateFormat.java

/*
GNU General Public License
CacheWolf is a software for PocketPC, Win and Linux that
enables paperless caching.
It supports the sites geocaching.com and opencaching.de

Copyright (C) 2006  CacheWolf development team
See http://www.cachewolf.de/ for more information.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
package CacheWolf.utils;

/* Several date formats are used by GC.COM
 *    2/27/2004   - Hidden dates are in format mm/dd/yyyy (=US style)
 *    February 27 - Found dates which happened this year
 *    February 27, 2004 - Found date in previous year
 * The internal standard is sortable:
 *    2004-02-27    - YYYY-MM-DD   
 */

import ewe.sys.Time;
import ewe.util.mString;

public class DateFormat {

    static int dayPos = 0;
    static int monthPos = 1;

    //static int yearPos = 2;

    public static void setGCDateFormat(String gCDateFormat) {
	dayPos = gCDateFormat.indexOf("d");
	monthPos = gCDateFormat.indexOf("M");
	//yearPos = gCDateFormat.indexOf("y");
    }

    /** Convert the US Format DateHidden/DateVisited into a sortable format */
    public static String toYYMMDD(String date) {
	return toYYMMDD(toDate(date));
    }

    public static Time toDate(String ds) {
	if (ds == null || ds.equals("") || ds.indexOf("1900") > -1)
	    return new Time(5, 5, 1900);
	Time d = new Time();
	d.hour = 0;
	d.minute = 0;
	d.second = 0;
	d.millis = 0;
	if (ds.indexOf("day") > 0) {
	    final long adaylong = new Time(2, 1, 2000).getTime() - new Time(1, 1, 2000).getTime();
	    if (ds.indexOf("Yesterday") > -1) {
		d.setTime(d.getTime() - adaylong);
	    } else {
		d.setTime(d.getTime() - adaylong * Common.parseInt(ds.substring(0, 1)));
	    }
	} else {
	    String[] SDate;
	    ds = STRreplace.replace(ds, ",", " ");
	    ds = STRreplace.replace(ds, "  ", " ");
	    SDate = mString.split(ds, ' ');
	    if (SDate.length == 1) {
		if (ds.indexOf('/') > -1)
		    SDate = mString.split(ds, '/');
		else if (ds.indexOf('-') > -1)
		    SDate = mString.split(ds, '-');
		else if (ds.indexOf('.') > -1)
		    SDate = mString.split(ds, '.');
		// trying to determine Dateformat
		int v0 = Common.parseInt(SDate[0]);
		int v1 = Common.parseInt(SDate[1]);
		int v2 = Common.parseInt(SDate[2]);
		int dd, mm, yy;
		if (v0 > 31) {
		    // yyyy MM dd
		    yy = v0;
		    mm = v1;
		    dd = v2;
		} else {
		    yy = v2;
		    if ((v0 == 0) || (v1 == 0)) {
			// month as text MMM
			String month;
			if (v0 == 0) {
			    month = SDate[0];
			    dd = v1;
			} else {
			    month = SDate[1];
			    dd = v0;
			}
			mm = monthName2int(month);
		    } else {
			// MM dd yyyy (doesn't work for dd MM yyyy)
			if (dayPos < monthPos) {
			    dd = v0;
			    mm = v1;
			} else {
			    mm = v0;
			    dd = v1;
			}
		    }

		}
		d.month = mm;
		d.day = dd;
		d.year = yy;
	    } else {
		// starting with dayOfWeek or missing year
		int offs = SDate.length - 3;
		if (offs < 0)
		    offs = 0;
		int v0 = Common.parseInt(SDate[offs]);
		if (v0 == 0) {
		    d.day = Common.parseInt(SDate[offs + 1]);
		    d.month = monthName2int(SDate[offs]);
		} else {
		    d.day = Common.parseInt(SDate[offs]);
		    d.month = monthName2int(SDate[offs + 1]);
		}
		if (SDate.length > 2) {
		    int yy = Common.parseInt(SDate[offs + 2]);
		    if (yy < 100)
			d.year = 2000 + yy;
		    else
			d.year = yy;
		} else
		    // missing year
		    ; // d.year = this year
	    }
	}
	return d;
    }

    private static int monthName2int(String month) {
	final String enMonthNames[] = { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };
	for (int m = 0; m < 12; m++) {
	    if (enMonthNames[m].startsWith(month)) {
		return m + 1;
	    }
	}
	final String deMonthNames[] = { "Januar", "Februar", "M�rz", "April", "Mai", "Juni", "Juli", "August", "September", "Oktober", "November", "Dezember" };
	for (int m = 0; m < 12; m++) {
	    if (deMonthNames[m].startsWith(month)) {
		return m + 1;
	    }
	}
	return 1; // Januar if not detected / in other language
    }

    public static String toYYMMDD(Time d) {
	return toYYMMDD(d, '-');
    }

    public static String toYYMMDD(Time d, char separator) {
	// the CW Time Format is with separator
	String f = "yyyy" + separator + "MM" + separator + "dd";
	return d.format(f);
    }

    // from lastSyncDate (yyyyMMddHHmmss) to gpxLogdate (yyyy-MM-dd)
    // if no lastSyncDate returns current Date
    public static String yyyyMMddHHmmss2gpxLogdate(String yyyyMMddHHmmss) {
	Time d = new Time();
	try {
	    d.parse(yyyyMMddHHmmss, "yyyyMMddHHmmss");
	} catch (IllegalArgumentException e) {
	    d = new Time();
	}
	return d.format("yyyy-MM-dd"); // +d.format("HH:mm:ss"); is set to 00:00:00 at gpxExport
    }

    public static String formatLastSyncDate(String timeRepresentation, String format) {
	if (!timeRepresentation.equals("")) {
	    try {
		Time t = new Time();
		t.parse(timeRepresentation, "yyyyMMddHHmmss");
		if (format.length() == 0)
		    return t.toString();
		else
		    return t.format(format);
	    } catch (Exception e) {
	    }
	    return "";
	} else {
	    return "";
	}

    }
}