From efdb99f8cecc4afb592afad79c761081d5d5cf22 Mon Sep 17 00:00:00 2001
From: lee <4766465@qq.com>
Date: Wed, 18 Dec 2024 13:27:00 +0800
Subject: [PATCH] init
---
xxl-job/xxl-job-admin/src/main/java/com/xxl/job/admin/core/cron/CronExpression.java | 1666 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 1,666 insertions(+), 0 deletions(-)
diff --git a/xxl-job/xxl-job-admin/src/main/java/com/xxl/job/admin/core/cron/CronExpression.java b/xxl-job/xxl-job-admin/src/main/java/com/xxl/job/admin/core/cron/CronExpression.java
new file mode 100644
index 0000000..fce2352
--- /dev/null
+++ b/xxl-job/xxl-job-admin/src/main/java/com/xxl/job/admin/core/cron/CronExpression.java
@@ -0,0 +1,1666 @@
+/*
+ * All content copyright Terracotta, Inc., unless otherwise indicated. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy
+ * of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+package com.xxl.job.admin.core.cron;
+
+import java.io.Serializable;
+import java.text.ParseException;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.Map;
+import java.util.SortedSet;
+import java.util.StringTokenizer;
+import java.util.TimeZone;
+import java.util.TreeSet;
+
+/**
+ * Provides a parser and evaluator for unix-like cron expressions. Cron
+ * expressions provide the ability to specify complex time combinations such as
+ * "At 8:00am every Monday through Friday" or "At 1:30am every
+ * last Friday of the month".
+ * <P>
+ * Cron expressions are comprised of 6 required fields and one optional field
+ * separated by white space. The fields respectively are described as follows:
+ *
+ * <table cellspacing="8">
+ * <tr>
+ * <th align="left">Field Name</th>
+ * <th align="left"> </th>
+ * <th align="left">Allowed Values</th>
+ * <th align="left"> </th>
+ * <th align="left">Allowed Special Characters</th>
+ * </tr>
+ * <tr>
+ * <td align="left"><code>Seconds</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>0-59</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>, - * /</code></td>
+ * </tr>
+ * <tr>
+ * <td align="left"><code>Minutes</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>0-59</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>, - * /</code></td>
+ * </tr>
+ * <tr>
+ * <td align="left"><code>Hours</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>0-23</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>, - * /</code></td>
+ * </tr>
+ * <tr>
+ * <td align="left"><code>Day-of-month</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>1-31</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>, - * ? / L W</code></td>
+ * </tr>
+ * <tr>
+ * <td align="left"><code>Month</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>0-11 or JAN-DEC</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>, - * /</code></td>
+ * </tr>
+ * <tr>
+ * <td align="left"><code>Day-of-Week</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>1-7 or SUN-SAT</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>, - * ? / L #</code></td>
+ * </tr>
+ * <tr>
+ * <td align="left"><code>Year (Optional)</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>empty, 1970-2199</code></td>
+ * <td align="left"> </th>
+ * <td align="left"><code>, - * /</code></td>
+ * </tr>
+ * </table>
+ * <P>
+ * The '*' character is used to specify all values. For example, "*"
+ * in the minute field means "every minute".
+ * <P>
+ * The '?' character is allowed for the day-of-month and day-of-week fields. It
+ * is used to specify 'no specific value'. This is useful when you need to
+ * specify something in one of the two fields, but not the other.
+ * <P>
+ * The '-' character is used to specify ranges For example "10-12" in
+ * the hour field means "the hours 10, 11 and 12".
+ * <P>
+ * The ',' character is used to specify additional values. For example
+ * "MON,WED,FRI" in the day-of-week field means "the days Monday,
+ * Wednesday, and Friday".
+ * <P>
+ * The '/' character is used to specify increments. For example "0/15"
+ * in the seconds field means "the seconds 0, 15, 30, and 45". And
+ * "5/15" in the seconds field means "the seconds 5, 20, 35, and
+ * 50". Specifying '*' before the '/' is equivalent to specifying 0 is
+ * the value to start with. Essentially, for each field in the expression, there
+ * is a set of numbers that can be turned on or off. For seconds and minutes,
+ * the numbers range from 0 to 59. For hours 0 to 23, for days of the month 0 to
+ * 31, and for months 0 to 11 (JAN to DEC). The "/" character simply helps you turn
+ * on every "nth" value in the given set. Thus "7/6" in the
+ * month field only turns on month "7", it does NOT mean every 6th
+ * month, please note that subtlety.
+ * <P>
+ * The 'L' character is allowed for the day-of-month and day-of-week fields.
+ * This character is short-hand for "last", but it has different
+ * meaning in each of the two fields. For example, the value "L" in
+ * the day-of-month field means "the last day of the month" - day 31
+ * for January, day 28 for February on non-leap years. If used in the
+ * day-of-week field by itself, it simply means "7" or
+ * "SAT". But if used in the day-of-week field after another value, it
+ * means "the last xxx day of the month" - for example "6L"
+ * means "the last friday of the month". You can also specify an offset
+ * from the last day of the month, such as "L-3" which would mean the third-to-last
+ * day of the calendar month. <i>When using the 'L' option, it is important not to
+ * specify lists, or ranges of values, as you'll get confusing/unexpected results.</i>
+ * <P>
+ * The 'W' character is allowed for the day-of-month field. This character
+ * is used to specify the weekday (Monday-Friday) nearest the given day. As an
+ * example, if you were to specify "15W" as the value for the
+ * day-of-month field, the meaning is: "the nearest weekday to the 15th of
+ * the month". So if the 15th is a Saturday, the trigger will fire on
+ * Friday the 14th. If the 15th is a Sunday, the trigger will fire on Monday the
+ * 16th. If the 15th is a Tuesday, then it will fire on Tuesday the 15th.
+ * However if you specify "1W" as the value for day-of-month, and the
+ * 1st is a Saturday, the trigger will fire on Monday the 3rd, as it will not
+ * 'jump' over the boundary of a month's days. The 'W' character can only be
+ * specified when the day-of-month is a single day, not a range or list of days.
+ * <P>
+ * The 'L' and 'W' characters can also be combined for the day-of-month
+ * expression to yield 'LW', which translates to "last weekday of the
+ * month".
+ * <P>
+ * The '#' character is allowed for the day-of-week field. This character is
+ * used to specify "the nth" XXX day of the month. For example, the
+ * value of "6#3" in the day-of-week field means the third Friday of
+ * the month (day 6 = Friday and "#3" = the 3rd one in the month).
+ * Other examples: "2#1" = the first Monday of the month and
+ * "4#5" = the fifth Wednesday of the month. Note that if you specify
+ * "#5" and there is not 5 of the given day-of-week in the month, then
+ * no firing will occur that month. If the '#' character is used, there can
+ * only be one expression in the day-of-week field ("3#1,6#3" is
+ * not valid, since there are two expressions).
+ * <P>
+ * <!--The 'C' character is allowed for the day-of-month and day-of-week fields.
+ * This character is short-hand for "calendar". This means values are
+ * calculated against the associated calendar, if any. If no calendar is
+ * associated, then it is equivalent to having an all-inclusive calendar. A
+ * value of "5C" in the day-of-month field means "the first day included by the
+ * calendar on or after the 5th". A value of "1C" in the day-of-week field
+ * means "the first day included by the calendar on or after Sunday".-->
+ * <P>
+ * The legal characters and the names of months and days of the week are not
+ * case sensitive.
+ *
+ * <p>
+ * <b>NOTES:</b>
+ * <ul>
+ * <li>Support for specifying both a day-of-week and a day-of-month value is
+ * not complete (you'll need to use the '?' character in one of these fields).
+ * </li>
+ * <li>Overflowing ranges is supported - that is, having a larger number on
+ * the left hand side than the right. You might do 22-2 to catch 10 o'clock
+ * at night until 2 o'clock in the morning, or you might have NOV-FEB. It is
+ * very important to note that overuse of overflowing ranges creates ranges
+ * that don't make sense and no effort has been made to determine which
+ * interpretation CronExpression chooses. An example would be
+ * "0 0 14-6 ? * FRI-MON". </li>
+ * </ul>
+ * </p>
+ *
+ *
+ * @author Sharada Jambula, James House
+ * @author Contributions from Mads Henderson
+ * @author Refactoring from CronTrigger to CronExpression by Aaron Craven
+ *
+ * Borrowed from quartz v2.3.1
+ *
+ */
+public final class CronExpression implements Serializable, Cloneable {
+
+ private static final long serialVersionUID = 12423409423L;
+
+ protected static final int SECOND = 0;
+ protected static final int MINUTE = 1;
+ protected static final int HOUR = 2;
+ protected static final int DAY_OF_MONTH = 3;
+ protected static final int MONTH = 4;
+ protected static final int DAY_OF_WEEK = 5;
+ protected static final int YEAR = 6;
+ protected static final int ALL_SPEC_INT = 99; // '*'
+ protected static final int NO_SPEC_INT = 98; // '?'
+ protected static final Integer ALL_SPEC = ALL_SPEC_INT;
+ protected static final Integer NO_SPEC = NO_SPEC_INT;
+
+ protected static final Map<String, Integer> monthMap = new HashMap<String, Integer>(20);
+ protected static final Map<String, Integer> dayMap = new HashMap<String, Integer>(60);
+ static {
+ monthMap.put("JAN", 0);
+ monthMap.put("FEB", 1);
+ monthMap.put("MAR", 2);
+ monthMap.put("APR", 3);
+ monthMap.put("MAY", 4);
+ monthMap.put("JUN", 5);
+ monthMap.put("JUL", 6);
+ monthMap.put("AUG", 7);
+ monthMap.put("SEP", 8);
+ monthMap.put("OCT", 9);
+ monthMap.put("NOV", 10);
+ monthMap.put("DEC", 11);
+
+ dayMap.put("SUN", 1);
+ dayMap.put("MON", 2);
+ dayMap.put("TUE", 3);
+ dayMap.put("WED", 4);
+ dayMap.put("THU", 5);
+ dayMap.put("FRI", 6);
+ dayMap.put("SAT", 7);
+ }
+
+ private final String cronExpression;
+ private TimeZone timeZone = null;
+ protected transient TreeSet<Integer> seconds;
+ protected transient TreeSet<Integer> minutes;
+ protected transient TreeSet<Integer> hours;
+ protected transient TreeSet<Integer> daysOfMonth;
+ protected transient TreeSet<Integer> months;
+ protected transient TreeSet<Integer> daysOfWeek;
+ protected transient TreeSet<Integer> years;
+
+ protected transient boolean lastdayOfWeek = false;
+ protected transient int nthdayOfWeek = 0;
+ protected transient boolean lastdayOfMonth = false;
+ protected transient boolean nearestWeekday = false;
+ protected transient int lastdayOffset = 0;
+ protected transient boolean expressionParsed = false;
+
+ public static final int MAX_YEAR = Calendar.getInstance().get(Calendar.YEAR) + 100;
+
+ /**
+ * Constructs a new <CODE>CronExpression</CODE> based on the specified
+ * parameter.
+ *
+ * @param cronExpression String representation of the cron expression the
+ * new object should represent
+ * @throws java.text.ParseException
+ * if the string expression cannot be parsed into a valid
+ * <CODE>CronExpression</CODE>
+ */
+ public CronExpression(String cronExpression) throws ParseException {
+ if (cronExpression == null) {
+ throw new IllegalArgumentException("cronExpression cannot be null");
+ }
+
+ this.cronExpression = cronExpression.toUpperCase(Locale.US);
+
+ buildExpression(this.cronExpression);
+ }
+
+ /**
+ * Constructs a new {@code CronExpression} as a copy of an existing
+ * instance.
+ *
+ * @param expression
+ * The existing cron expression to be copied
+ */
+ public CronExpression(CronExpression expression) {
+ /*
+ * We don't call the other constructor here since we need to swallow the
+ * ParseException. We also elide some of the sanity checking as it is
+ * not logically trippable.
+ */
+ this.cronExpression = expression.getCronExpression();
+ try {
+ buildExpression(cronExpression);
+ } catch (ParseException ex) {
+ throw new AssertionError();
+ }
+ if (expression.getTimeZone() != null) {
+ setTimeZone((TimeZone) expression.getTimeZone().clone());
+ }
+ }
+
+ /**
+ * Indicates whether the given date satisfies the cron expression. Note that
+ * milliseconds are ignored, so two Dates falling on different milliseconds
+ * of the same second will always have the same result here.
+ *
+ * @param date the date to evaluate
+ * @return a boolean indicating whether the given date satisfies the cron
+ * expression
+ */
+ public boolean isSatisfiedBy(Date date) {
+ Calendar testDateCal = Calendar.getInstance(getTimeZone());
+ testDateCal.setTime(date);
+ testDateCal.set(Calendar.MILLISECOND, 0);
+ Date originalDate = testDateCal.getTime();
+
+ testDateCal.add(Calendar.SECOND, -1);
+
+ Date timeAfter = getTimeAfter(testDateCal.getTime());
+
+ return ((timeAfter != null) && (timeAfter.equals(originalDate)));
+ }
+
+ /**
+ * Returns the next date/time <I>after</I> the given date/time which
+ * satisfies the cron expression.
+ *
+ * @param date the date/time at which to begin the search for the next valid
+ * date/time
+ * @return the next valid date/time
+ */
+ public Date getNextValidTimeAfter(Date date) {
+ return getTimeAfter(date);
+ }
+
+ /**
+ * Returns the next date/time <I>after</I> the given date/time which does
+ * <I>not</I> satisfy the expression
+ *
+ * @param date the date/time at which to begin the search for the next
+ * invalid date/time
+ * @return the next valid date/time
+ */
+ public Date getNextInvalidTimeAfter(Date date) {
+ long difference = 1000;
+
+ //move back to the nearest second so differences will be accurate
+ Calendar adjustCal = Calendar.getInstance(getTimeZone());
+ adjustCal.setTime(date);
+ adjustCal.set(Calendar.MILLISECOND, 0);
+ Date lastDate = adjustCal.getTime();
+
+ Date newDate;
+
+ //FUTURE_TODO: (QUARTZ-481) IMPROVE THIS! The following is a BAD solution to this problem. Performance will be very bad here, depending on the cron expression. It is, however A solution.
+
+ //keep getting the next included time until it's farther than one second
+ // apart. At that point, lastDate is the last valid fire time. We return
+ // the second immediately following it.
+ while (difference == 1000) {
+ newDate = getTimeAfter(lastDate);
+ if(newDate == null)
+ break;
+
+ difference = newDate.getTime() - lastDate.getTime();
+
+ if (difference == 1000) {
+ lastDate = newDate;
+ }
+ }
+
+ return new Date(lastDate.getTime() + 1000);
+ }
+
+ /**
+ * Returns the time zone for which this <code>CronExpression</code>
+ * will be resolved.
+ */
+ public TimeZone getTimeZone() {
+ if (timeZone == null) {
+ timeZone = TimeZone.getDefault();
+ }
+
+ return timeZone;
+ }
+
+ /**
+ * Sets the time zone for which this <code>CronExpression</code>
+ * will be resolved.
+ */
+ public void setTimeZone(TimeZone timeZone) {
+ this.timeZone = timeZone;
+ }
+
+ /**
+ * Returns the string representation of the <CODE>CronExpression</CODE>
+ *
+ * @return a string representation of the <CODE>CronExpression</CODE>
+ */
+ @Override
+ public String toString() {
+ return cronExpression;
+ }
+
+ /**
+ * Indicates whether the specified cron expression can be parsed into a
+ * valid cron expression
+ *
+ * @param cronExpression the expression to evaluate
+ * @return a boolean indicating whether the given expression is a valid cron
+ * expression
+ */
+ public static boolean isValidExpression(String cronExpression) {
+
+ try {
+ new CronExpression(cronExpression);
+ } catch (ParseException pe) {
+ return false;
+ }
+
+ return true;
+ }
+
+ public static void validateExpression(String cronExpression) throws ParseException {
+
+ new CronExpression(cronExpression);
+ }
+
+
+ ////////////////////////////////////////////////////////////////////////////
+ //
+ // Expression Parsing Functions
+ //
+ ////////////////////////////////////////////////////////////////////////////
+
+ protected void buildExpression(String expression) throws ParseException {
+ expressionParsed = true;
+
+ try {
+
+ if (seconds == null) {
+ seconds = new TreeSet<Integer>();
+ }
+ if (minutes == null) {
+ minutes = new TreeSet<Integer>();
+ }
+ if (hours == null) {
+ hours = new TreeSet<Integer>();
+ }
+ if (daysOfMonth == null) {
+ daysOfMonth = new TreeSet<Integer>();
+ }
+ if (months == null) {
+ months = new TreeSet<Integer>();
+ }
+ if (daysOfWeek == null) {
+ daysOfWeek = new TreeSet<Integer>();
+ }
+ if (years == null) {
+ years = new TreeSet<Integer>();
+ }
+
+ int exprOn = SECOND;
+
+ StringTokenizer exprsTok = new StringTokenizer(expression, " \t",
+ false);
+
+ while (exprsTok.hasMoreTokens() && exprOn <= YEAR) {
+ String expr = exprsTok.nextToken().trim();
+
+ // throw an exception if L is used with other days of the month
+ if(exprOn == DAY_OF_MONTH && expr.indexOf('L') != -1 && expr.length() > 1 && expr.contains(",")) {
+ throw new ParseException("Support for specifying 'L' and 'LW' with other days of the month is not implemented", -1);
+ }
+ // throw an exception if L is used with other days of the week
+ if(exprOn == DAY_OF_WEEK && expr.indexOf('L') != -1 && expr.length() > 1 && expr.contains(",")) {
+ throw new ParseException("Support for specifying 'L' with other days of the week is not implemented", -1);
+ }
+ if(exprOn == DAY_OF_WEEK && expr.indexOf('#') != -1 && expr.indexOf('#', expr.indexOf('#') +1) != -1) {
+ throw new ParseException("Support for specifying multiple \"nth\" days is not implemented.", -1);
+ }
+
+ StringTokenizer vTok = new StringTokenizer(expr, ",");
+ while (vTok.hasMoreTokens()) {
+ String v = vTok.nextToken();
+ storeExpressionVals(0, v, exprOn);
+ }
+
+ exprOn++;
+ }
+
+ if (exprOn <= DAY_OF_WEEK) {
+ throw new ParseException("Unexpected end of expression.",
+ expression.length());
+ }
+
+ if (exprOn <= YEAR) {
+ storeExpressionVals(0, "*", YEAR);
+ }
+
+ TreeSet<Integer> dow = getSet(DAY_OF_WEEK);
+ TreeSet<Integer> dom = getSet(DAY_OF_MONTH);
+
+ // Copying the logic from the UnsupportedOperationException below
+ boolean dayOfMSpec = !dom.contains(NO_SPEC);
+ boolean dayOfWSpec = !dow.contains(NO_SPEC);
+
+ if (!dayOfMSpec || dayOfWSpec) {
+ if (!dayOfWSpec || dayOfMSpec) {
+ throw new ParseException(
+ "Support for specifying both a day-of-week AND a day-of-month parameter is not implemented.", 0);
+ }
+ }
+ } catch (ParseException pe) {
+ throw pe;
+ } catch (Exception e) {
+ throw new ParseException("Illegal cron expression format ("
+ + e.toString() + ")", 0);
+ }
+ }
+
+ protected int storeExpressionVals(int pos, String s, int type)
+ throws ParseException {
+
+ int incr = 0;
+ int i = skipWhiteSpace(pos, s);
+ if (i >= s.length()) {
+ return i;
+ }
+ char c = s.charAt(i);
+ if ((c >= 'A') && (c <= 'Z') && (!s.equals("L")) && (!s.equals("LW")) && (!s.matches("^L-[0-9]*[W]?"))) {
+ String sub = s.substring(i, i + 3);
+ int sval = -1;
+ int eval = -1;
+ if (type == MONTH) {
+ sval = getMonthNumber(sub) + 1;
+ if (sval <= 0) {
+ throw new ParseException("Invalid Month value: '" + sub + "'", i);
+ }
+ if (s.length() > i + 3) {
+ c = s.charAt(i + 3);
+ if (c == '-') {
+ i += 4;
+ sub = s.substring(i, i + 3);
+ eval = getMonthNumber(sub) + 1;
+ if (eval <= 0) {
+ throw new ParseException("Invalid Month value: '" + sub + "'", i);
+ }
+ }
+ }
+ } else if (type == DAY_OF_WEEK) {
+ sval = getDayOfWeekNumber(sub);
+ if (sval < 0) {
+ throw new ParseException("Invalid Day-of-Week value: '"
+ + sub + "'", i);
+ }
+ if (s.length() > i + 3) {
+ c = s.charAt(i + 3);
+ if (c == '-') {
+ i += 4;
+ sub = s.substring(i, i + 3);
+ eval = getDayOfWeekNumber(sub);
+ if (eval < 0) {
+ throw new ParseException(
+ "Invalid Day-of-Week value: '" + sub
+ + "'", i);
+ }
+ } else if (c == '#') {
+ try {
+ i += 4;
+ nthdayOfWeek = Integer.parseInt(s.substring(i));
+ if (nthdayOfWeek < 1 || nthdayOfWeek > 5) {
+ throw new Exception();
+ }
+ } catch (Exception e) {
+ throw new ParseException(
+ "A numeric value between 1 and 5 must follow the '#' option",
+ i);
+ }
+ } else if (c == 'L') {
+ lastdayOfWeek = true;
+ i++;
+ }
+ }
+
+ } else {
+ throw new ParseException(
+ "Illegal characters for this position: '" + sub + "'",
+ i);
+ }
+ if (eval != -1) {
+ incr = 1;
+ }
+ addToSet(sval, eval, incr, type);
+ return (i + 3);
+ }
+
+ if (c == '?') {
+ i++;
+ if ((i + 1) < s.length()
+ && (s.charAt(i) != ' ' && s.charAt(i + 1) != '\t')) {
+ throw new ParseException("Illegal character after '?': "
+ + s.charAt(i), i);
+ }
+ if (type != DAY_OF_WEEK && type != DAY_OF_MONTH) {
+ throw new ParseException(
+ "'?' can only be specified for Day-of-Month or Day-of-Week.",
+ i);
+ }
+ if (type == DAY_OF_WEEK && !lastdayOfMonth) {
+ int val = daysOfMonth.last();
+ if (val == NO_SPEC_INT) {
+ throw new ParseException(
+ "'?' can only be specified for Day-of-Month -OR- Day-of-Week.",
+ i);
+ }
+ }
+
+ addToSet(NO_SPEC_INT, -1, 0, type);
+ return i;
+ }
+
+ if (c == '*' || c == '/') {
+ if (c == '*' && (i + 1) >= s.length()) {
+ addToSet(ALL_SPEC_INT, -1, incr, type);
+ return i + 1;
+ } else if (c == '/'
+ && ((i + 1) >= s.length() || s.charAt(i + 1) == ' ' || s
+ .charAt(i + 1) == '\t')) {
+ throw new ParseException("'/' must be followed by an integer.", i);
+ } else if (c == '*') {
+ i++;
+ }
+ c = s.charAt(i);
+ if (c == '/') { // is an increment specified?
+ i++;
+ if (i >= s.length()) {
+ throw new ParseException("Unexpected end of string.", i);
+ }
+
+ incr = getNumericValue(s, i);
+
+ i++;
+ if (incr > 10) {
+ i++;
+ }
+ checkIncrementRange(incr, type, i);
+ } else {
+ incr = 1;
+ }
+
+ addToSet(ALL_SPEC_INT, -1, incr, type);
+ return i;
+ } else if (c == 'L') {
+ i++;
+ if (type == DAY_OF_MONTH) {
+ lastdayOfMonth = true;
+ }
+ if (type == DAY_OF_WEEK) {
+ addToSet(7, 7, 0, type);
+ }
+ if(type == DAY_OF_MONTH && s.length() > i) {
+ c = s.charAt(i);
+ if(c == '-') {
+ ValueSet vs = getValue(0, s, i+1);
+ lastdayOffset = vs.value;
+ if(lastdayOffset > 30)
+ throw new ParseException("Offset from last day must be <= 30", i+1);
+ i = vs.pos;
+ }
+ if(s.length() > i) {
+ c = s.charAt(i);
+ if(c == 'W') {
+ nearestWeekday = true;
+ i++;
+ }
+ }
+ }
+ return i;
+ } else if (c >= '0' && c <= '9') {
+ int val = Integer.parseInt(String.valueOf(c));
+ i++;
+ if (i >= s.length()) {
+ addToSet(val, -1, -1, type);
+ } else {
+ c = s.charAt(i);
+ if (c >= '0' && c <= '9') {
+ ValueSet vs = getValue(val, s, i);
+ val = vs.value;
+ i = vs.pos;
+ }
+ i = checkNext(i, s, val, type);
+ return i;
+ }
+ } else {
+ throw new ParseException("Unexpected character: " + c, i);
+ }
+
+ return i;
+ }
+
+ private void checkIncrementRange(int incr, int type, int idxPos) throws ParseException {
+ if (incr > 59 && (type == SECOND || type == MINUTE)) {
+ throw new ParseException("Increment > 60 : " + incr, idxPos);
+ } else if (incr > 23 && (type == HOUR)) {
+ throw new ParseException("Increment > 24 : " + incr, idxPos);
+ } else if (incr > 31 && (type == DAY_OF_MONTH)) {
+ throw new ParseException("Increment > 31 : " + incr, idxPos);
+ } else if (incr > 7 && (type == DAY_OF_WEEK)) {
+ throw new ParseException("Increment > 7 : " + incr, idxPos);
+ } else if (incr > 12 && (type == MONTH)) {
+ throw new ParseException("Increment > 12 : " + incr, idxPos);
+ }
+ }
+
+ protected int checkNext(int pos, String s, int val, int type)
+ throws ParseException {
+
+ int end = -1;
+ int i = pos;
+
+ if (i >= s.length()) {
+ addToSet(val, end, -1, type);
+ return i;
+ }
+
+ char c = s.charAt(pos);
+
+ if (c == 'L') {
+ if (type == DAY_OF_WEEK) {
+ if(val < 1 || val > 7)
+ throw new ParseException("Day-of-Week values must be between 1 and 7", -1);
+ lastdayOfWeek = true;
+ } else {
+ throw new ParseException("'L' option is not valid here. (pos=" + i + ")", i);
+ }
+ TreeSet<Integer> set = getSet(type);
+ set.add(val);
+ i++;
+ return i;
+ }
+
+ if (c == 'W') {
+ if (type == DAY_OF_MONTH) {
+ nearestWeekday = true;
+ } else {
+ throw new ParseException("'W' option is not valid here. (pos=" + i + ")", i);
+ }
+ if(val > 31)
+ throw new ParseException("The 'W' option does not make sense with values larger than 31 (max number of days in a month)", i);
+ TreeSet<Integer> set = getSet(type);
+ set.add(val);
+ i++;
+ return i;
+ }
+
+ if (c == '#') {
+ if (type != DAY_OF_WEEK) {
+ throw new ParseException("'#' option is not valid here. (pos=" + i + ")", i);
+ }
+ i++;
+ try {
+ nthdayOfWeek = Integer.parseInt(s.substring(i));
+ if (nthdayOfWeek < 1 || nthdayOfWeek > 5) {
+ throw new Exception();
+ }
+ } catch (Exception e) {
+ throw new ParseException(
+ "A numeric value between 1 and 5 must follow the '#' option",
+ i);
+ }
+
+ TreeSet<Integer> set = getSet(type);
+ set.add(val);
+ i++;
+ return i;
+ }
+
+ if (c == '-') {
+ i++;
+ c = s.charAt(i);
+ int v = Integer.parseInt(String.valueOf(c));
+ end = v;
+ i++;
+ if (i >= s.length()) {
+ addToSet(val, end, 1, type);
+ return i;
+ }
+ c = s.charAt(i);
+ if (c >= '0' && c <= '9') {
+ ValueSet vs = getValue(v, s, i);
+ end = vs.value;
+ i = vs.pos;
+ }
+ if (i < s.length() && ((c = s.charAt(i)) == '/')) {
+ i++;
+ c = s.charAt(i);
+ int v2 = Integer.parseInt(String.valueOf(c));
+ i++;
+ if (i >= s.length()) {
+ addToSet(val, end, v2, type);
+ return i;
+ }
+ c = s.charAt(i);
+ if (c >= '0' && c <= '9') {
+ ValueSet vs = getValue(v2, s, i);
+ int v3 = vs.value;
+ addToSet(val, end, v3, type);
+ i = vs.pos;
+ return i;
+ } else {
+ addToSet(val, end, v2, type);
+ return i;
+ }
+ } else {
+ addToSet(val, end, 1, type);
+ return i;
+ }
+ }
+
+ if (c == '/') {
+ if ((i + 1) >= s.length() || s.charAt(i + 1) == ' ' || s.charAt(i + 1) == '\t') {
+ throw new ParseException("'/' must be followed by an integer.", i);
+ }
+
+ i++;
+ c = s.charAt(i);
+ int v2 = Integer.parseInt(String.valueOf(c));
+ i++;
+ if (i >= s.length()) {
+ checkIncrementRange(v2, type, i);
+ addToSet(val, end, v2, type);
+ return i;
+ }
+ c = s.charAt(i);
+ if (c >= '0' && c <= '9') {
+ ValueSet vs = getValue(v2, s, i);
+ int v3 = vs.value;
+ checkIncrementRange(v3, type, i);
+ addToSet(val, end, v3, type);
+ i = vs.pos;
+ return i;
+ } else {
+ throw new ParseException("Unexpected character '" + c + "' after '/'", i);
+ }
+ }
+
+ addToSet(val, end, 0, type);
+ i++;
+ return i;
+ }
+
+ public String getCronExpression() {
+ return cronExpression;
+ }
+
+ public String getExpressionSummary() {
+ StringBuilder buf = new StringBuilder();
+
+ buf.append("seconds: ");
+ buf.append(getExpressionSetSummary(seconds));
+ buf.append("\n");
+ buf.append("minutes: ");
+ buf.append(getExpressionSetSummary(minutes));
+ buf.append("\n");
+ buf.append("hours: ");
+ buf.append(getExpressionSetSummary(hours));
+ buf.append("\n");
+ buf.append("daysOfMonth: ");
+ buf.append(getExpressionSetSummary(daysOfMonth));
+ buf.append("\n");
+ buf.append("months: ");
+ buf.append(getExpressionSetSummary(months));
+ buf.append("\n");
+ buf.append("daysOfWeek: ");
+ buf.append(getExpressionSetSummary(daysOfWeek));
+ buf.append("\n");
+ buf.append("lastdayOfWeek: ");
+ buf.append(lastdayOfWeek);
+ buf.append("\n");
+ buf.append("nearestWeekday: ");
+ buf.append(nearestWeekday);
+ buf.append("\n");
+ buf.append("NthDayOfWeek: ");
+ buf.append(nthdayOfWeek);
+ buf.append("\n");
+ buf.append("lastdayOfMonth: ");
+ buf.append(lastdayOfMonth);
+ buf.append("\n");
+ buf.append("years: ");
+ buf.append(getExpressionSetSummary(years));
+ buf.append("\n");
+
+ return buf.toString();
+ }
+
+ protected String getExpressionSetSummary(java.util.Set<Integer> set) {
+
+ if (set.contains(NO_SPEC)) {
+ return "?";
+ }
+ if (set.contains(ALL_SPEC)) {
+ return "*";
+ }
+
+ StringBuilder buf = new StringBuilder();
+
+ Iterator<Integer> itr = set.iterator();
+ boolean first = true;
+ while (itr.hasNext()) {
+ Integer iVal = itr.next();
+ String val = iVal.toString();
+ if (!first) {
+ buf.append(",");
+ }
+ buf.append(val);
+ first = false;
+ }
+
+ return buf.toString();
+ }
+
+ protected String getExpressionSetSummary(java.util.ArrayList<Integer> list) {
+
+ if (list.contains(NO_SPEC)) {
+ return "?";
+ }
+ if (list.contains(ALL_SPEC)) {
+ return "*";
+ }
+
+ StringBuilder buf = new StringBuilder();
+
+ Iterator<Integer> itr = list.iterator();
+ boolean first = true;
+ while (itr.hasNext()) {
+ Integer iVal = itr.next();
+ String val = iVal.toString();
+ if (!first) {
+ buf.append(",");
+ }
+ buf.append(val);
+ first = false;
+ }
+
+ return buf.toString();
+ }
+
+ protected int skipWhiteSpace(int i, String s) {
+ for (; i < s.length() && (s.charAt(i) == ' ' || s.charAt(i) == '\t'); i++) {
+ }
+
+ return i;
+ }
+
+ protected int findNextWhiteSpace(int i, String s) {
+ for (; i < s.length() && (s.charAt(i) != ' ' || s.charAt(i) != '\t'); i++) {
+ }
+
+ return i;
+ }
+
+ protected void addToSet(int val, int end, int incr, int type)
+ throws ParseException {
+
+ TreeSet<Integer> set = getSet(type);
+
+ if (type == SECOND || type == MINUTE) {
+ if ((val < 0 || val > 59 || end > 59) && (val != ALL_SPEC_INT)) {
+ throw new ParseException(
+ "Minute and Second values must be between 0 and 59",
+ -1);
+ }
+ } else if (type == HOUR) {
+ if ((val < 0 || val > 23 || end > 23) && (val != ALL_SPEC_INT)) {
+ throw new ParseException(
+ "Hour values must be between 0 and 23", -1);
+ }
+ } else if (type == DAY_OF_MONTH) {
+ if ((val < 1 || val > 31 || end > 31) && (val != ALL_SPEC_INT)
+ && (val != NO_SPEC_INT)) {
+ throw new ParseException(
+ "Day of month values must be between 1 and 31", -1);
+ }
+ } else if (type == MONTH) {
+ if ((val < 1 || val > 12 || end > 12) && (val != ALL_SPEC_INT)) {
+ throw new ParseException(
+ "Month values must be between 1 and 12", -1);
+ }
+ } else if (type == DAY_OF_WEEK) {
+ if ((val == 0 || val > 7 || end > 7) && (val != ALL_SPEC_INT)
+ && (val != NO_SPEC_INT)) {
+ throw new ParseException(
+ "Day-of-Week values must be between 1 and 7", -1);
+ }
+ }
+
+ if ((incr == 0 || incr == -1) && val != ALL_SPEC_INT) {
+ if (val != -1) {
+ set.add(val);
+ } else {
+ set.add(NO_SPEC);
+ }
+
+ return;
+ }
+
+ int startAt = val;
+ int stopAt = end;
+
+ if (val == ALL_SPEC_INT && incr <= 0) {
+ incr = 1;
+ set.add(ALL_SPEC); // put in a marker, but also fill values
+ }
+
+ if (type == SECOND || type == MINUTE) {
+ if (stopAt == -1) {
+ stopAt = 59;
+ }
+ if (startAt == -1 || startAt == ALL_SPEC_INT) {
+ startAt = 0;
+ }
+ } else if (type == HOUR) {
+ if (stopAt == -1) {
+ stopAt = 23;
+ }
+ if (startAt == -1 || startAt == ALL_SPEC_INT) {
+ startAt = 0;
+ }
+ } else if (type == DAY_OF_MONTH) {
+ if (stopAt == -1) {
+ stopAt = 31;
+ }
+ if (startAt == -1 || startAt == ALL_SPEC_INT) {
+ startAt = 1;
+ }
+ } else if (type == MONTH) {
+ if (stopAt == -1) {
+ stopAt = 12;
+ }
+ if (startAt == -1 || startAt == ALL_SPEC_INT) {
+ startAt = 1;
+ }
+ } else if (type == DAY_OF_WEEK) {
+ if (stopAt == -1) {
+ stopAt = 7;
+ }
+ if (startAt == -1 || startAt == ALL_SPEC_INT) {
+ startAt = 1;
+ }
+ } else if (type == YEAR) {
+ if (stopAt == -1) {
+ stopAt = MAX_YEAR;
+ }
+ if (startAt == -1 || startAt == ALL_SPEC_INT) {
+ startAt = 1970;
+ }
+ }
+
+ // if the end of the range is before the start, then we need to overflow into
+ // the next day, month etc. This is done by adding the maximum amount for that
+ // type, and using modulus max to determine the value being added.
+ int max = -1;
+ if (stopAt < startAt) {
+ switch (type) {
+ case SECOND : max = 60; break;
+ case MINUTE : max = 60; break;
+ case HOUR : max = 24; break;
+ case MONTH : max = 12; break;
+ case DAY_OF_WEEK : max = 7; break;
+ case DAY_OF_MONTH : max = 31; break;
+ case YEAR : throw new IllegalArgumentException("Start year must be less than stop year");
+ default : throw new IllegalArgumentException("Unexpected type encountered");
+ }
+ stopAt += max;
+ }
+
+ for (int i = startAt; i <= stopAt; i += incr) {
+ if (max == -1) {
+ // ie: there's no max to overflow over
+ set.add(i);
+ } else {
+ // take the modulus to get the real value
+ int i2 = i % max;
+
+ // 1-indexed ranges should not include 0, and should include their max
+ if (i2 == 0 && (type == MONTH || type == DAY_OF_WEEK || type == DAY_OF_MONTH) ) {
+ i2 = max;
+ }
+
+ set.add(i2);
+ }
+ }
+ }
+
+ TreeSet<Integer> getSet(int type) {
+ switch (type) {
+ case SECOND:
+ return seconds;
+ case MINUTE:
+ return minutes;
+ case HOUR:
+ return hours;
+ case DAY_OF_MONTH:
+ return daysOfMonth;
+ case MONTH:
+ return months;
+ case DAY_OF_WEEK:
+ return daysOfWeek;
+ case YEAR:
+ return years;
+ default:
+ return null;
+ }
+ }
+
+ protected ValueSet getValue(int v, String s, int i) {
+ char c = s.charAt(i);
+ StringBuilder s1 = new StringBuilder(String.valueOf(v));
+ while (c >= '0' && c <= '9') {
+ s1.append(c);
+ i++;
+ if (i >= s.length()) {
+ break;
+ }
+ c = s.charAt(i);
+ }
+ ValueSet val = new ValueSet();
+
+ val.pos = (i < s.length()) ? i : i + 1;
+ val.value = Integer.parseInt(s1.toString());
+ return val;
+ }
+
+ protected int getNumericValue(String s, int i) {
+ int endOfVal = findNextWhiteSpace(i, s);
+ String val = s.substring(i, endOfVal);
+ return Integer.parseInt(val);
+ }
+
+ protected int getMonthNumber(String s) {
+ Integer integer = monthMap.get(s);
+
+ if (integer == null) {
+ return -1;
+ }
+
+ return integer;
+ }
+
+ protected int getDayOfWeekNumber(String s) {
+ Integer integer = dayMap.get(s);
+
+ if (integer == null) {
+ return -1;
+ }
+
+ return integer;
+ }
+
+ ////////////////////////////////////////////////////////////////////////////
+ //
+ // Computation Functions
+ //
+ ////////////////////////////////////////////////////////////////////////////
+
+ public Date getTimeAfter(Date afterTime) {
+
+ // Computation is based on Gregorian year only.
+ Calendar cl = new java.util.GregorianCalendar(getTimeZone());
+
+ // move ahead one second, since we're computing the time *after* the
+ // given time
+ afterTime = new Date(afterTime.getTime() + 1000);
+ // CronTrigger does not deal with milliseconds
+ cl.setTime(afterTime);
+ cl.set(Calendar.MILLISECOND, 0);
+
+ boolean gotOne = false;
+ // loop until we've computed the next time, or we've past the endTime
+ while (!gotOne) {
+
+ //if (endTime != null && cl.getTime().after(endTime)) return null;
+ if(cl.get(Calendar.YEAR) > 2999) { // prevent endless loop...
+ return null;
+ }
+
+ SortedSet<Integer> st = null;
+ int t = 0;
+
+ int sec = cl.get(Calendar.SECOND);
+ int min = cl.get(Calendar.MINUTE);
+
+ // get second.................................................
+ st = seconds.tailSet(sec);
+ if (st != null && st.size() != 0) {
+ sec = st.first();
+ } else {
+ sec = seconds.first();
+ min++;
+ cl.set(Calendar.MINUTE, min);
+ }
+ cl.set(Calendar.SECOND, sec);
+
+ min = cl.get(Calendar.MINUTE);
+ int hr = cl.get(Calendar.HOUR_OF_DAY);
+ t = -1;
+
+ // get minute.................................................
+ st = minutes.tailSet(min);
+ if (st != null && st.size() != 0) {
+ t = min;
+ min = st.first();
+ } else {
+ min = minutes.first();
+ hr++;
+ }
+ if (min != t) {
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, min);
+ setCalendarHour(cl, hr);
+ continue;
+ }
+ cl.set(Calendar.MINUTE, min);
+
+ hr = cl.get(Calendar.HOUR_OF_DAY);
+ int day = cl.get(Calendar.DAY_OF_MONTH);
+ t = -1;
+
+ // get hour...................................................
+ st = hours.tailSet(hr);
+ if (st != null && st.size() != 0) {
+ t = hr;
+ hr = st.first();
+ } else {
+ hr = hours.first();
+ day++;
+ }
+ if (hr != t) {
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.DAY_OF_MONTH, day);
+ setCalendarHour(cl, hr);
+ continue;
+ }
+ cl.set(Calendar.HOUR_OF_DAY, hr);
+
+ day = cl.get(Calendar.DAY_OF_MONTH);
+ int mon = cl.get(Calendar.MONTH) + 1;
+ // '+ 1' because calendar is 0-based for this field, and we are
+ // 1-based
+ t = -1;
+ int tmon = mon;
+
+ // get day...................................................
+ boolean dayOfMSpec = !daysOfMonth.contains(NO_SPEC);
+ boolean dayOfWSpec = !daysOfWeek.contains(NO_SPEC);
+ if (dayOfMSpec && !dayOfWSpec) { // get day by day of month rule
+ st = daysOfMonth.tailSet(day);
+ if (lastdayOfMonth) {
+ if(!nearestWeekday) {
+ t = day;
+ day = getLastDayOfMonth(mon, cl.get(Calendar.YEAR));
+ day -= lastdayOffset;
+ if(t > day) {
+ mon++;
+ if(mon > 12) {
+ mon = 1;
+ tmon = 3333; // ensure test of mon != tmon further below fails
+ cl.add(Calendar.YEAR, 1);
+ }
+ day = 1;
+ }
+ } else {
+ t = day;
+ day = getLastDayOfMonth(mon, cl.get(Calendar.YEAR));
+ day -= lastdayOffset;
+
+ java.util.Calendar tcal = java.util.Calendar.getInstance(getTimeZone());
+ tcal.set(Calendar.SECOND, 0);
+ tcal.set(Calendar.MINUTE, 0);
+ tcal.set(Calendar.HOUR_OF_DAY, 0);
+ tcal.set(Calendar.DAY_OF_MONTH, day);
+ tcal.set(Calendar.MONTH, mon - 1);
+ tcal.set(Calendar.YEAR, cl.get(Calendar.YEAR));
+
+ int ldom = getLastDayOfMonth(mon, cl.get(Calendar.YEAR));
+ int dow = tcal.get(Calendar.DAY_OF_WEEK);
+
+ if(dow == Calendar.SATURDAY && day == 1) {
+ day += 2;
+ } else if(dow == Calendar.SATURDAY) {
+ day -= 1;
+ } else if(dow == Calendar.SUNDAY && day == ldom) {
+ day -= 2;
+ } else if(dow == Calendar.SUNDAY) {
+ day += 1;
+ }
+
+ tcal.set(Calendar.SECOND, sec);
+ tcal.set(Calendar.MINUTE, min);
+ tcal.set(Calendar.HOUR_OF_DAY, hr);
+ tcal.set(Calendar.DAY_OF_MONTH, day);
+ tcal.set(Calendar.MONTH, mon - 1);
+ Date nTime = tcal.getTime();
+ if(nTime.before(afterTime)) {
+ day = 1;
+ mon++;
+ }
+ }
+ } else if(nearestWeekday) {
+ t = day;
+ day = daysOfMonth.first();
+
+ java.util.Calendar tcal = java.util.Calendar.getInstance(getTimeZone());
+ tcal.set(Calendar.SECOND, 0);
+ tcal.set(Calendar.MINUTE, 0);
+ tcal.set(Calendar.HOUR_OF_DAY, 0);
+ tcal.set(Calendar.DAY_OF_MONTH, day);
+ tcal.set(Calendar.MONTH, mon - 1);
+ tcal.set(Calendar.YEAR, cl.get(Calendar.YEAR));
+
+ int ldom = getLastDayOfMonth(mon, cl.get(Calendar.YEAR));
+ int dow = tcal.get(Calendar.DAY_OF_WEEK);
+
+ if(dow == Calendar.SATURDAY && day == 1) {
+ day += 2;
+ } else if(dow == Calendar.SATURDAY) {
+ day -= 1;
+ } else if(dow == Calendar.SUNDAY && day == ldom) {
+ day -= 2;
+ } else if(dow == Calendar.SUNDAY) {
+ day += 1;
+ }
+
+
+ tcal.set(Calendar.SECOND, sec);
+ tcal.set(Calendar.MINUTE, min);
+ tcal.set(Calendar.HOUR_OF_DAY, hr);
+ tcal.set(Calendar.DAY_OF_MONTH, day);
+ tcal.set(Calendar.MONTH, mon - 1);
+ Date nTime = tcal.getTime();
+ if(nTime.before(afterTime)) {
+ day = daysOfMonth.first();
+ mon++;
+ }
+ } else if (st != null && st.size() != 0) {
+ t = day;
+ day = st.first();
+ // make sure we don't over-run a short month, such as february
+ int lastDay = getLastDayOfMonth(mon, cl.get(Calendar.YEAR));
+ if (day > lastDay) {
+ day = daysOfMonth.first();
+ mon++;
+ }
+ } else {
+ day = daysOfMonth.first();
+ mon++;
+ }
+
+ if (day != t || mon != tmon) {
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.HOUR_OF_DAY, 0);
+ cl.set(Calendar.DAY_OF_MONTH, day);
+ cl.set(Calendar.MONTH, mon - 1);
+ // '- 1' because calendar is 0-based for this field, and we
+ // are 1-based
+ continue;
+ }
+ } else if (dayOfWSpec && !dayOfMSpec) { // get day by day of week rule
+ if (lastdayOfWeek) { // are we looking for the last XXX day of
+ // the month?
+ int dow = daysOfWeek.first(); // desired
+ // d-o-w
+ int cDow = cl.get(Calendar.DAY_OF_WEEK); // current d-o-w
+ int daysToAdd = 0;
+ if (cDow < dow) {
+ daysToAdd = dow - cDow;
+ }
+ if (cDow > dow) {
+ daysToAdd = dow + (7 - cDow);
+ }
+
+ int lDay = getLastDayOfMonth(mon, cl.get(Calendar.YEAR));
+
+ if (day + daysToAdd > lDay) { // did we already miss the
+ // last one?
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.HOUR_OF_DAY, 0);
+ cl.set(Calendar.DAY_OF_MONTH, 1);
+ cl.set(Calendar.MONTH, mon);
+ // no '- 1' here because we are promoting the month
+ continue;
+ }
+
+ // find date of last occurrence of this day in this month...
+ while ((day + daysToAdd + 7) <= lDay) {
+ daysToAdd += 7;
+ }
+
+ day += daysToAdd;
+
+ if (daysToAdd > 0) {
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.HOUR_OF_DAY, 0);
+ cl.set(Calendar.DAY_OF_MONTH, day);
+ cl.set(Calendar.MONTH, mon - 1);
+ // '- 1' here because we are not promoting the month
+ continue;
+ }
+
+ } else if (nthdayOfWeek != 0) {
+ // are we looking for the Nth XXX day in the month?
+ int dow = daysOfWeek.first(); // desired
+ // d-o-w
+ int cDow = cl.get(Calendar.DAY_OF_WEEK); // current d-o-w
+ int daysToAdd = 0;
+ if (cDow < dow) {
+ daysToAdd = dow - cDow;
+ } else if (cDow > dow) {
+ daysToAdd = dow + (7 - cDow);
+ }
+
+ boolean dayShifted = false;
+ if (daysToAdd > 0) {
+ dayShifted = true;
+ }
+
+ day += daysToAdd;
+ int weekOfMonth = day / 7;
+ if (day % 7 > 0) {
+ weekOfMonth++;
+ }
+
+ daysToAdd = (nthdayOfWeek - weekOfMonth) * 7;
+ day += daysToAdd;
+ if (daysToAdd < 0
+ || day > getLastDayOfMonth(mon, cl
+ .get(Calendar.YEAR))) {
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.HOUR_OF_DAY, 0);
+ cl.set(Calendar.DAY_OF_MONTH, 1);
+ cl.set(Calendar.MONTH, mon);
+ // no '- 1' here because we are promoting the month
+ continue;
+ } else if (daysToAdd > 0 || dayShifted) {
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.HOUR_OF_DAY, 0);
+ cl.set(Calendar.DAY_OF_MONTH, day);
+ cl.set(Calendar.MONTH, mon - 1);
+ // '- 1' here because we are NOT promoting the month
+ continue;
+ }
+ } else {
+ int cDow = cl.get(Calendar.DAY_OF_WEEK); // current d-o-w
+ int dow = daysOfWeek.first(); // desired
+ // d-o-w
+ st = daysOfWeek.tailSet(cDow);
+ if (st != null && st.size() > 0) {
+ dow = st.first();
+ }
+
+ int daysToAdd = 0;
+ if (cDow < dow) {
+ daysToAdd = dow - cDow;
+ }
+ if (cDow > dow) {
+ daysToAdd = dow + (7 - cDow);
+ }
+
+ int lDay = getLastDayOfMonth(mon, cl.get(Calendar.YEAR));
+
+ if (day + daysToAdd > lDay) { // will we pass the end of
+ // the month?
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.HOUR_OF_DAY, 0);
+ cl.set(Calendar.DAY_OF_MONTH, 1);
+ cl.set(Calendar.MONTH, mon);
+ // no '- 1' here because we are promoting the month
+ continue;
+ } else if (daysToAdd > 0) { // are we swithing days?
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.HOUR_OF_DAY, 0);
+ cl.set(Calendar.DAY_OF_MONTH, day + daysToAdd);
+ cl.set(Calendar.MONTH, mon - 1);
+ // '- 1' because calendar is 0-based for this field,
+ // and we are 1-based
+ continue;
+ }
+ }
+ } else { // dayOfWSpec && !dayOfMSpec
+ throw new UnsupportedOperationException(
+ "Support for specifying both a day-of-week AND a day-of-month parameter is not implemented.");
+ }
+ cl.set(Calendar.DAY_OF_MONTH, day);
+
+ mon = cl.get(Calendar.MONTH) + 1;
+ // '+ 1' because calendar is 0-based for this field, and we are
+ // 1-based
+ int year = cl.get(Calendar.YEAR);
+ t = -1;
+
+ // test for expressions that never generate a valid fire date,
+ // but keep looping...
+ if (year > MAX_YEAR) {
+ return null;
+ }
+
+ // get month...................................................
+ st = months.tailSet(mon);
+ if (st != null && st.size() != 0) {
+ t = mon;
+ mon = st.first();
+ } else {
+ mon = months.first();
+ year++;
+ }
+ if (mon != t) {
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.HOUR_OF_DAY, 0);
+ cl.set(Calendar.DAY_OF_MONTH, 1);
+ cl.set(Calendar.MONTH, mon - 1);
+ // '- 1' because calendar is 0-based for this field, and we are
+ // 1-based
+ cl.set(Calendar.YEAR, year);
+ continue;
+ }
+ cl.set(Calendar.MONTH, mon - 1);
+ // '- 1' because calendar is 0-based for this field, and we are
+ // 1-based
+
+ year = cl.get(Calendar.YEAR);
+ t = -1;
+
+ // get year...................................................
+ st = years.tailSet(year);
+ if (st != null && st.size() != 0) {
+ t = year;
+ year = st.first();
+ } else {
+ return null; // ran out of years...
+ }
+
+ if (year != t) {
+ cl.set(Calendar.SECOND, 0);
+ cl.set(Calendar.MINUTE, 0);
+ cl.set(Calendar.HOUR_OF_DAY, 0);
+ cl.set(Calendar.DAY_OF_MONTH, 1);
+ cl.set(Calendar.MONTH, 0);
+ // '- 1' because calendar is 0-based for this field, and we are
+ // 1-based
+ cl.set(Calendar.YEAR, year);
+ continue;
+ }
+ cl.set(Calendar.YEAR, year);
+
+ gotOne = true;
+ } // while( !done )
+
+ return cl.getTime();
+ }
+
+ /**
+ * Advance the calendar to the particular hour paying particular attention
+ * to daylight saving problems.
+ *
+ * @param cal the calendar to operate on
+ * @param hour the hour to set
+ */
+ protected void setCalendarHour(Calendar cal, int hour) {
+ cal.set(java.util.Calendar.HOUR_OF_DAY, hour);
+ if (cal.get(java.util.Calendar.HOUR_OF_DAY) != hour && hour != 24) {
+ cal.set(java.util.Calendar.HOUR_OF_DAY, hour + 1);
+ }
+ }
+
+ /**
+ * NOT YET IMPLEMENTED: Returns the time before the given time
+ * that the <code>CronExpression</code> matches.
+ */
+ public Date getTimeBefore(Date endTime) {
+ // FUTURE_TODO: implement QUARTZ-423
+ return null;
+ }
+
+ /**
+ * NOT YET IMPLEMENTED: Returns the final time that the
+ * <code>CronExpression</code> will match.
+ */
+ public Date getFinalFireTime() {
+ // FUTURE_TODO: implement QUARTZ-423
+ return null;
+ }
+
+ protected boolean isLeapYear(int year) {
+ return ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0));
+ }
+
+ protected int getLastDayOfMonth(int monthNum, int year) {
+
+ switch (monthNum) {
+ case 1:
+ return 31;
+ case 2:
+ return (isLeapYear(year)) ? 29 : 28;
+ case 3:
+ return 31;
+ case 4:
+ return 30;
+ case 5:
+ return 31;
+ case 6:
+ return 30;
+ case 7:
+ return 31;
+ case 8:
+ return 31;
+ case 9:
+ return 30;
+ case 10:
+ return 31;
+ case 11:
+ return 30;
+ case 12:
+ return 31;
+ default:
+ throw new IllegalArgumentException("Illegal month number: "
+ + monthNum);
+ }
+ }
+
+
+ private void readObject(java.io.ObjectInputStream stream)
+ throws java.io.IOException, ClassNotFoundException {
+
+ stream.defaultReadObject();
+ try {
+ buildExpression(cronExpression);
+ } catch (Exception ignore) {
+ } // never happens
+ }
+
+ @Override
+ @Deprecated
+ public Object clone() {
+ return new CronExpression(this);
+ }
+}
+
+class ValueSet {
+ public int value;
+
+ public int pos;
+}
--
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