AndroidAPS/app/src/main/java/info/nightscout/utils/DateUtil.java

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package info.nightscout.utils;
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import android.support.v4.util.LongSparseArray;
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import android.text.format.DateUtils;
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import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.ISODateTimeFormat;
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import java.text.DateFormat;
import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.GregorianCalendar;
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import java.util.Locale;
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import java.util.TimeZone;
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import java.util.regex.Matcher;
import java.util.regex.Pattern;
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import info.nightscout.androidaps.MainApp;
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import info.nightscout.androidaps.R;
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/**
* The Class DateUtil. A simple wrapper around SimpleDateFormat to ease the handling of iso date string <-> date obj
* with TZ
*/
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public class DateUtil {
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/**
* The date format in iso.
*/
private static String FORMAT_DATE_ISO_OUT = "yyyy-MM-dd'T'HH:mm:ss'Z'";
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/**
* Takes in an ISO date string of the following format:
* yyyy-mm-ddThh:mm:ss.ms+HoMo
*
* @param isoDateString the iso date string
* @return the date
* @throws Exception the exception
*/
public static Date fromISODateString(String isoDateString)
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throws Exception {
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DateTimeFormatter parser = ISODateTimeFormat.dateTimeParser();
DateTime dateTime = DateTime.parse(isoDateString, parser);
return dateTime.toDate();
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}
/**
* Render date
*
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* @param date the date obj
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* @param format - if not specified, will use FORMAT_DATE_ISO
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* @param tz - tz to set to, if not specified uses local timezone
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* @return the iso-formatted date string
*/
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public static String toISOString(Date date, String format, TimeZone tz) {
if (format == null) format = FORMAT_DATE_ISO_OUT;
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if (tz == null) tz = TimeZone.getDefault();
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DateFormat f = new SimpleDateFormat(format, Locale.getDefault());
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f.setTimeZone(tz);
return f.format(date);
}
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public static String toISOString(Date date) {
return toISOString(date, FORMAT_DATE_ISO_OUT, TimeZone.getTimeZone("UTC"));
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}
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public static String toISOString(long date) {
return toISOString(new Date(date), FORMAT_DATE_ISO_OUT, TimeZone.getTimeZone("UTC"));
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}
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public static Date toDate(Integer seconds) {
Calendar calendar = new GregorianCalendar();
calendar.set(Calendar.HOUR_OF_DAY, seconds / 60 / 60);
calendar.set(Calendar.MINUTE, (seconds / 60) % 60);
calendar.set(Calendar.SECOND, 0);
return calendar.getTime();
}
public static int toSeconds(String hh_colon_mm) {
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Pattern p = Pattern.compile("(\\d+):(\\d+)( a.m.| p.m.| AM | PM|)");
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Matcher m = p.matcher(hh_colon_mm);
int retval = 0;
if (m.find()) {
retval = SafeParse.stringToInt(m.group(1)) * 60 * 60 + SafeParse.stringToInt(m.group(2)) * 60;
if ((m.group(3).equals(" a.m.") || m.group(3).equals(" AM")) && m.group(1).equals("12"))
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retval -= 12 * 60 * 60;
if ((m.group(3).equals(" p.m.") || m.group(3).equals(" PM")) && !(m.group(1).equals("12")))
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retval += 12 * 60 * 60;
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}
return retval;
}
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public static String dateString(Date date) {
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//return DateUtils.formatDateTime(MainApp.instance(), date.getTime(), DateUtils.FORMAT_SHOW_DATE); this provide month name not number
DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
return df.format(date);
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}
public static String dateString(long mills) {
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//return DateUtils.formatDateTime(MainApp.instance(), mills, DateUtils.FORMAT_SHOW_DATE); this provide month name not number
DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
return df.format(mills);
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}
public static String timeString(Date date) {
return DateUtils.formatDateTime(MainApp.instance(), date.getTime(), DateUtils.FORMAT_SHOW_TIME);
}
public static String timeString(long mills) {
return DateUtils.formatDateTime(MainApp.instance(), mills, DateUtils.FORMAT_SHOW_TIME);
}
public static String dateAndTimeString(Date date) {
return dateString(date) + " " + timeString(date);
}
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public static String dateAndTimeString(long mills) {
return dateString(mills) + " " + timeString(mills);
}
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public static String minAgo(long time) {
int mins = (int) ((System.currentTimeMillis() - time) / 1000 / 60);
return MainApp.gs(R.string.minago, mins);
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}
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public static String hourAgo(long time) {
double hours = (System.currentTimeMillis() - time) / 1000d / 60 / 60;
return MainApp.gs(R.string.hoursago, hours);
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}
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private static LongSparseArray<String> timeStrings = new LongSparseArray<>();
public static String timeStringFromSeconds(int seconds) {
String cached = timeStrings.get(seconds);
if (cached != null)
return cached;
String t = DateUtils.formatDateTime(MainApp.instance(), toDate(seconds).getTime(), DateUtils.FORMAT_SHOW_TIME);
timeStrings.put(seconds, t);
return t;
}
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public static String timeFrameString(long timeInMillis) {
long remainingTimeMinutes = timeInMillis / (1000 * 60);
long remainingTimeHours = remainingTimeMinutes / 60;
remainingTimeMinutes = remainingTimeMinutes % 60;
return "(" + ((remainingTimeHours > 0) ? (remainingTimeHours + "h ") : "") + remainingTimeMinutes + "')";
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}
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public static String sinceString(long timestamp) {
return timeFrameString(System.currentTimeMillis() - timestamp);
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}
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public static String untilString(long timestamp) {
return timeFrameString(timestamp - System.currentTimeMillis());
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}
}