diff options
Diffstat (limited to 'Essentials/src/com/earth2me/essentials/utils/DateUtil.java')
| -rw-r--r-- | Essentials/src/com/earth2me/essentials/utils/DateUtil.java | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/Essentials/src/com/earth2me/essentials/utils/DateUtil.java b/Essentials/src/com/earth2me/essentials/utils/DateUtil.java new file mode 100644 index 000000000..e416fbb0e --- /dev/null +++ b/Essentials/src/com/earth2me/essentials/utils/DateUtil.java @@ -0,0 +1,176 @@ +package com.earth2me.essentials.utils; + +import static com.earth2me.essentials.I18n._; +import java.util.Calendar; +import java.util.GregorianCalendar; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + + +public class DateUtil +{ + public static long parseDateDiff(String time, boolean future) throws Exception + { + Pattern timePattern = Pattern.compile("(?:([0-9]+)\\s*y[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*mo[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*w[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*d[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*h[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*m[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*(?:s[a-z]*)?)?", Pattern.CASE_INSENSITIVE); + Matcher m = timePattern.matcher(time); + int years = 0; + int months = 0; + int weeks = 0; + int days = 0; + int hours = 0; + int minutes = 0; + int seconds = 0; + boolean found = false; + while (m.find()) + { + if (m.group() == null || m.group().isEmpty()) + { + continue; + } + for (int i = 0; i < m.groupCount(); i++) + { + if (m.group(i) != null && !m.group(i).isEmpty()) + { + found = true; + break; + } + } + if (found) + { + if (m.group(1) != null && !m.group(1).isEmpty()) + { + years = Integer.parseInt(m.group(1)); + } + if (m.group(2) != null && !m.group(2).isEmpty()) + { + months = Integer.parseInt(m.group(2)); + } + if (m.group(3) != null && !m.group(3).isEmpty()) + { + weeks = Integer.parseInt(m.group(3)); + } + if (m.group(4) != null && !m.group(4).isEmpty()) + { + days = Integer.parseInt(m.group(4)); + } + if (m.group(5) != null && !m.group(5).isEmpty()) + { + hours = Integer.parseInt(m.group(5)); + } + if (m.group(6) != null && !m.group(6).isEmpty()) + { + minutes = Integer.parseInt(m.group(6)); + } + if (m.group(7) != null && !m.group(7).isEmpty()) + { + seconds = Integer.parseInt(m.group(7)); + } + break; + } + } + if (!found) + { + throw new Exception(_("illegalDate")); + } + Calendar c = new GregorianCalendar(); + if (years > 0) + { + c.add(Calendar.YEAR, years * (future ? 1 : -1)); + } + if (months > 0) + { + c.add(Calendar.MONTH, months * (future ? 1 : -1)); + } + if (weeks > 0) + { + c.add(Calendar.WEEK_OF_YEAR, weeks * (future ? 1 : -1)); + } + if (days > 0) + { + c.add(Calendar.DAY_OF_MONTH, days * (future ? 1 : -1)); + } + if (hours > 0) + { + c.add(Calendar.HOUR_OF_DAY, hours * (future ? 1 : -1)); + } + if (minutes > 0) + { + c.add(Calendar.MINUTE, minutes * (future ? 1 : -1)); + } + if (seconds > 0) + { + c.add(Calendar.SECOND, seconds * (future ? 1 : -1)); + } + Calendar max = new GregorianCalendar(); + max.add(Calendar.YEAR, 10); + if (c.after(max)) + { + return max.getTimeInMillis(); + } + return c.getTimeInMillis(); + } + + static int dateDiff(int type, Calendar fromDate, Calendar toDate, boolean future) + { + int diff = 0; + long savedDate = fromDate.getTimeInMillis(); + while ((future && !fromDate.after(toDate)) || (!future && !fromDate.before(toDate))) + { + savedDate = fromDate.getTimeInMillis(); + fromDate.add(type, future ? 1 : -1); + diff++; + } + diff--; + fromDate.setTimeInMillis(savedDate); + return diff; + } + + public static String formatDateDiff(long date) + { + Calendar c = new GregorianCalendar(); + c.setTimeInMillis(date); + Calendar now = new GregorianCalendar(); + return DateUtil.formatDateDiff(now, c); + } + + public static String formatDateDiff(Calendar fromDate, Calendar toDate) + { + boolean future = false; + if (toDate.equals(fromDate)) + { + return _("now"); + } + if (toDate.after(fromDate)) + { + future = true; + } + StringBuilder sb = new StringBuilder(); + int[] types = new int[] + { + Calendar.YEAR, Calendar.MONTH, Calendar.DAY_OF_MONTH, Calendar.HOUR_OF_DAY, Calendar.MINUTE, Calendar.SECOND + }; + String[] names = new String[] + { + _("year"), _("years"), _("month"), _("months"), _("day"), _("days"), _("hour"), _("hours"), _("minute"), _("minutes"), _("second"), _("seconds") + }; + int accuracy = 0; + for (int i = 0; i < types.length; i++) + { + if (accuracy > 2) + { + break; + } + int diff = dateDiff(types[i], fromDate, toDate, future); + if (diff > 0) + { + accuracy++; + sb.append(" ").append(diff).append(" ").append(names[i * 2 + (diff > 1 ? 1 : 0)]); + } + } + if (sb.length() == 0) + { + return "now"; + } + return sb.toString().trim(); + } +} |