/Cron.NET/CronExpression.cs
C# | 2097 lines | 1419 code | 157 blank | 521 comment | 467 complexity | 414a5f470e280a57b999d5ec816048fb MD5 | raw file
- /*
- * Copyright 2004-2009 James House
- *
- * 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.
- *
- */
- using System;
- using System.Collections;
- using System.Globalization;
- using System.Runtime.Serialization;
- using System.Text;
-
-
- using NullableDateTime = System.Nullable<System.DateTime>;
-
-
-
- //using TimeZone = System.TimeZoneInfo;
-
-
- using Quartz.Collection;
-
- namespace Quartz
- {
- /// <summary>
- /// 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".
- /// </summary>
- /// <remarks>
- /// <p>
- /// Cron expressions are comprised of 6 required fields and one optional field
- /// separated by white space. The fields respectively are described as follows:
- /// </p>
- /// <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">Seconds</td>
- /// <td align="left"> </td>
- /// <td align="left">0-59</td>
- /// <td align="left"> </td>
- /// <td align="left">, - /// /</td>
- /// </tr>
- /// <tr>
- /// <td align="left">Minutes</td>
- /// <td align="left"> </td>
- /// <td align="left">0-59</td>
- /// <td align="left"> </td>
- /// <td align="left">, - /// /</td>
- /// </tr>
- /// <tr>
- /// <td align="left">Hours</td>
- /// <td align="left"> </td>
- /// <td align="left">0-23</td>
- /// <td align="left"> </td>
- /// <td align="left">, - /// /</td>
- /// </tr>
- /// <tr>
- /// <td align="left">Day-of-month</td>
- /// <td align="left"> </td>
- /// <td align="left">1-31</td>
- /// <td align="left"> </td>
- /// <td align="left">, - /// ? / L W C</td>
- /// </tr>
- /// <tr>
- /// <td align="left">Month</td>
- /// <td align="left"> </td>
- /// <td align="left">1-12 or JAN-DEC</td>
- /// <td align="left"> </td>
- /// <td align="left">, - /// /</td>
- /// </tr>
- /// <tr>
- /// <td align="left">Day-of-Week</td>
- /// <td align="left"> </td>
- /// <td align="left">1-7 or SUN-SAT</td>
- /// <td align="left"> </td>
- /// <td align="left">, - /// ? / L #</td>
- /// </tr>
- /// <tr>
- /// <td align="left">Year (Optional)</td>
- /// <td align="left"> </td>
- /// <td align="left">empty, 1970-2099</td>
- /// <td align="left"> </td>
- /// <td align="left">, - /// /</td>
- /// </tr>
- /// </table>
- /// <p>
- /// The '*' character is used to specify all values. For example, "*"
- /// in the minute field means "every minute".
- /// </p>
- /// <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>
- /// <p>
- /// The '-' character is used to specify ranges For example "10-12" in
- /// the hour field means "the hours 10, 11 and 12".
- /// </p>
- /// <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>
- /// <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 1 to 12. 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>
- /// <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". When using the 'L' option, it
- /// is important not to specify lists, or ranges of values, as you'll get
- /// confusing results.
- /// </p>
- /// <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>
- /// <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>
- /// <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>
- /// <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>
- /// <p>
- /// The legal characters and the names of months and days of the week are not
- /// case sensitive.
- /// </p>
- /// <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>
- /// </remarks>
- /// <author>Sharada Jambula</author>
- /// <author>James House</author>
- /// <author>Contributions from Mads Henderson</author>
- /// <author>Refactoring from CronTrigger to CronExpression by Aaron Craven</author>
- [Serializable]
- public class CronExpression : ICloneable, IDeserializationCallback
- {
- /// <summary>
- /// Field specification for second.
- /// </summary>
- protected const int Second = 0;
-
- /// <summary>
- /// Field specification for minute.
- /// </summary>
- protected const int Minute = 1;
-
- /// <summary>
- /// Field specification for hour.
- /// </summary>
- protected const int Hour = 2;
-
- /// <summary>
- /// Field specification for day of month.
- /// </summary>
- protected const int DayOfMonth = 3;
-
- /// <summary>
- /// Field specification for month.
- /// </summary>
- protected const int Month = 4;
-
- /// <summary>
- /// Field specification for day of week.
- /// </summary>
- protected const int DayOfWeek = 5;
-
- /// <summary>
- /// Field specification for year.
- /// </summary>
- protected const int Year = 6;
-
- /// <summary>
- /// Field specification for all wildcard value '*'.
- /// </summary>
- protected const int AllSpecInt = 99; // '*'
-
- /// <summary>
- /// Field specification for not specified value '?'.
- /// </summary>
- protected const int NoSpecInt = 98; // '?'
-
- /// <summary>
- /// Field specification for wildcard '*'.
- /// </summary>
- protected const int AllSpec = AllSpecInt;
-
- /// <summary>
- /// Field specification for no specification at all '?'.
- /// </summary>
- protected const int NoSpec = NoSpecInt;
-
- private static readonly Hashtable monthMap = new Hashtable(20);
- private static readonly Hashtable dayMap = new Hashtable(60);
-
- private readonly string cronExpressionString = null;
-
- private TimeZone timeZone = null;
-
- /// <summary>
- /// Seconds.
- /// </summary>
- [NonSerialized]
- protected TreeSet seconds;
- /// <summary>
- /// minutes.
- /// </summary>
- [NonSerialized]
- protected TreeSet minutes;
- /// <summary>
- /// Hours.
- /// </summary>
- [NonSerialized]
- protected TreeSet hours;
- /// <summary>
- /// Days of month.
- /// </summary>
- [NonSerialized]
- protected TreeSet daysOfMonth;
- /// <summary>
- /// Months.
- /// </summary>
- [NonSerialized]
- protected TreeSet months;
- /// <summary>
- /// Days of week.
- /// </summary>
- [NonSerialized]
- protected TreeSet daysOfWeek;
- /// <summary>
- /// Years.
- /// </summary>
- [NonSerialized]
- protected TreeSet years;
-
- /// <summary>
- /// Last day of week.
- /// </summary>
- [NonSerialized]
- protected bool lastdayOfWeek = false;
- /// <summary>
- /// Nth day of week.
- /// </summary>
- [NonSerialized]
- protected int nthdayOfWeek = 0;
- /// <summary>
- /// Last day of month.
- /// </summary>
- [NonSerialized]
- protected bool lastdayOfMonth = false;
- /// <summary>
- /// Nearest weekday.
- /// </summary>
- [NonSerialized]
- protected bool nearestWeekday = false;
- /// <summary>
- /// Calendar day of week.
- /// </summary>
- [NonSerialized]
- protected bool calendardayOfWeek = false;
- /// <summary>
- /// Calendar day of month.
- /// </summary>
- [NonSerialized]
- protected bool calendardayOfMonth = false;
- /// <summary>
- /// Expression parsed.
- /// </summary>
- [NonSerialized]
- protected bool expressionParsed = false;
-
- static CronExpression()
- {
- monthMap.Add("JAN", 0);
- monthMap.Add("FEB", 1);
- monthMap.Add("MAR", 2);
- monthMap.Add("APR", 3);
- monthMap.Add("MAY", 4);
- monthMap.Add("JUN", 5);
- monthMap.Add("JUL", 6);
- monthMap.Add("AUG", 7);
- monthMap.Add("SEP", 8);
- monthMap.Add("OCT", 9);
- monthMap.Add("NOV", 10);
- monthMap.Add("DEC", 11);
-
- dayMap.Add("SUN", 1);
- dayMap.Add("MON", 2);
- dayMap.Add("TUE", 3);
- dayMap.Add("WED", 4);
- dayMap.Add("THU", 5);
- dayMap.Add("FRI", 6);
- dayMap.Add("SAT", 7);
- }
-
- ///<summary>
- /// Constructs a new <see cref="CronExpressionString" /> based on the specified
- /// parameter.
- /// </summary>
- /// <param name="cronExpression">
- /// String representation of the cron expression the new object should represent
- /// </param>
- /// <see cref="CronExpressionString" />
- public CronExpression(string cronExpression)
- {
- if (cronExpression == null)
- {
- throw new ArgumentException("cronExpression cannot be null");
- }
-
- cronExpressionString = cronExpression.ToUpper(CultureInfo.InvariantCulture);
- BuildExpression(cronExpression);
- }
-
- /// <summary>
- /// Indicates whether the given date satisfies the cron expression.
- /// </summary>
- /// <remarks>
- /// Note that milliseconds are ignored, so two Dates falling on different milliseconds
- /// of the same second will always have the same result here.
- /// </remarks>
- /// <param name="dateUtc">The date to evaluate.</param>
- /// <returns>a boolean indicating whether the given date satisfies the cron expression</returns>
- public virtual bool IsSatisfiedBy(DateTime dateUtc)
- {
- DateTime test =
- new DateTime(dateUtc.Year, dateUtc.Month, dateUtc.Day, dateUtc.Hour, dateUtc.Minute, dateUtc.Second).AddSeconds(-1);
-
- NullableDateTime timeAfter = GetTimeAfter(test);
-
- if (timeAfter.HasValue && timeAfter.Value.Equals(dateUtc))
- {
- return true;
- }
- else
- {
- return false;
- }
- }
-
- /// <summary>
- /// Returns the next date/time <i>after</i> the given date/time which
- /// satisfies the cron expression.
- /// </summary>
- /// <param name="date">the date/time at which to begin the search for the next valid date/time</param>
- /// <returns>the next valid date/time</returns>
- public virtual NullableDateTime GetNextValidTimeAfter(DateTime date)
- {
- return GetTimeAfter(date);
- }
-
- /// <summary>
- /// Returns the next date/time <i>after</i> the given date/time which does
- /// <i>not</i> satisfy the expression.
- /// </summary>
- /// <param name="date">the date/time at which to begin the search for the next invalid date/time</param>
- /// <returns>the next valid date/time</returns>
- public virtual NullableDateTime GetNextInvalidTimeAfter(DateTime date)
- {
- long difference = 1000;
-
- //move back to the nearest second so differences will be accurate
- DateTime lastDate =
- new DateTime(date.Year, date.Month, date.Day, date.Hour, date.Minute, date.Second).AddSeconds(-1);
-
- //TODO: 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)
- {
- DateTime newDate = GetTimeAfter(lastDate).Value;
-
- difference = (long) (newDate - lastDate).TotalMilliseconds;
-
- if (difference == 1000)
- {
- lastDate = newDate;
- }
- }
-
- return lastDate.AddSeconds(1);
- }
-
- /// <summary>
- /// Sets or gets the time zone for which the <see cref="CronExpression" /> of this
- /// <see cref="CronTrigger" /> will be resolved.
- /// </summary>
- public virtual TimeZone TimeZone
- {
- set { timeZone = value; }
- get
- {
- if (timeZone == null)
- {
- timeZone = TimeZone.CurrentTimeZone;
- }
-
- return timeZone;
- }
- }
-
- /// <summary>
- /// Returns the string representation of the <see cref="CronExpression" />
- /// </summary>
- /// <returns>The string representation of the <see cref="CronExpression" /></returns>
- public override string ToString()
- {
- return cronExpressionString;
- }
-
- /// <summary>
- /// Indicates whether the specified cron expression can be parsed into a
- /// valid cron expression
- /// </summary>
- /// <param name="cronExpression">the expression to evaluate</param>
- /// <returns>a boolean indicating whether the given expression is a valid cron
- /// expression</returns>
- public static bool IsValidExpression(string cronExpression)
- {
- try
- {
- new CronExpression(cronExpression);
- }
- catch (FormatException)
- {
- return false;
- }
-
- return true;
- }
-
- ////////////////////////////////////////////////////////////////////////////
- //
- // Expression Parsing Functions
- //
- ////////////////////////////////////////////////////////////////////////////
-
- /// <summary>
- /// Builds the expression.
- /// </summary>
- /// <param name="expression">The expression.</param>
- protected void BuildExpression(string expression)
- {
- expressionParsed = true;
-
- try
- {
- if (seconds == null)
- {
- seconds = new TreeSet();
- }
- if (minutes == null)
- {
- minutes = new TreeSet();
- }
- if (hours == null)
- {
- hours = new TreeSet();
- }
- if (daysOfMonth == null)
- {
- daysOfMonth = new TreeSet();
- }
- if (months == null)
- {
- months = new TreeSet();
- }
- if (daysOfWeek == null)
- {
- daysOfWeek = new TreeSet();
- }
- if (years == null)
- {
- years = new TreeSet();
- }
-
- int exprOn = Second;
-
- #if NET_20
- string[] exprsTok = expression.Trim().Split(new char[] { ' ', '\t', '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
- #else
- string[] exprsTok = expression.Trim().Split(new char[] { ' ', '\t', '\r', '\n' });
- #endif
- foreach (string exprTok in exprsTok)
- {
- string expr = exprTok.Trim();
-
- if (expr.Length == 0)
- {
- continue;
- }
- if (exprOn > Year)
- {
- break;
- }
-
- // throw an exception if L is used with other days of the month
- if (exprOn == DayOfMonth && expr.IndexOf('L') != -1 && expr.Length > 1 && expr.IndexOf(",") >= 0)
- {
- throw new FormatException("Support for specifying 'L' and 'LW' with other days of the month is not implemented");
- }
- // throw an exception if L is used with other days of the week
- if (exprOn == DayOfWeek && expr.IndexOf('L') != -1 && expr.Length > 1 && expr.IndexOf(",") >= 0)
- {
- throw new FormatException("Support for specifying 'L' with other days of the week is not implemented");
- }
-
- string[] vTok = expr.Split(',');
- foreach (string v in vTok)
- {
- StoreExpressionVals(0, v, exprOn);
- }
-
- exprOn++;
- }
-
- if (exprOn <= DayOfWeek)
- {
- throw new FormatException("Unexpected end of expression.");
- }
-
- if (exprOn <= Year)
- {
- StoreExpressionVals(0, "*", Year);
- }
-
- TreeSet dow = GetSet(DayOfWeek);
- TreeSet dom = GetSet(DayOfMonth);
-
- // Copying the logic from the UnsupportedOperationException below
- bool dayOfMSpec = !dom.Contains(NoSpec);
- bool dayOfWSpec = !dow.Contains(NoSpec);
-
- if (dayOfMSpec && !dayOfWSpec)
- {
- // skip
- }
- else if (dayOfWSpec && !dayOfMSpec)
- {
- // skip
- }
- else
- {
- throw new FormatException("Support for specifying both a day-of-week AND a day-of-month parameter is not implemented.");
- }
- }
- catch (FormatException)
- {
- throw;
- }
- catch (Exception e)
- {
- throw new FormatException(string.Format(CultureInfo.InvariantCulture, "Illegal cron expression format ({0})", e));
- }
- }
-
- /// <summary>
- /// Stores the expression values.
- /// </summary>
- /// <param name="pos">The position.</param>
- /// <param name="s">The string to traverse.</param>
- /// <param name="type">The type of value.</param>
- /// <returns></returns>
- protected virtual int StoreExpressionVals(int pos, string s, int type)
- {
- int incr = 0;
- int i = SkipWhiteSpace(pos, s);
- if (i >= s.Length)
- {
- return i;
- }
- char c = s[i];
- if ((c >= 'A') && (c <= 'Z') && (!s.Equals("L")) && (!s.Equals("LW")))
- {
- String sub = s.Substring(i, 3);
- int sval;
- int eval = -1;
- if (type == Month)
- {
- sval = GetMonthNumber(sub) + 1;
- if (sval <= 0)
- {
- throw new FormatException(string.Format(CultureInfo.InvariantCulture, "Invalid Month value: '{0}'", sub));
- }
- if (s.Length > i + 3)
- {
- c = s[i + 3];
- if (c == '-')
- {
- i += 4;
- sub = s.Substring(i, 3);
- eval = GetMonthNumber(sub) + 1;
- if (eval <= 0)
- {
- throw new FormatException(
- string.Format(CultureInfo.InvariantCulture, "Invalid Month value: '{0}'", sub));
- }
- }
- }
- }
- else if (type == DayOfWeek)
- {
- sval = GetDayOfWeekNumber(sub);
- if (sval < 0)
- {
- throw new FormatException(string.Format(CultureInfo.InvariantCulture, "Invalid Day-of-Week value: '{0}'", sub));
- }
- if (s.Length > i + 3)
- {
- c = s[i + 3];
- if (c == '-')
- {
- i += 4;
- sub = s.Substring(i, 3);
- eval = GetDayOfWeekNumber(sub);
- if (eval < 0)
- {
- throw new FormatException(
- string.Format(CultureInfo.InvariantCulture, "Invalid Day-of-Week value: '{0}'", sub));
- }
- }
- else if (c == '#')
- {
- try
- {
- i += 4;
- nthdayOfWeek = Convert.ToInt32(s.Substring(i), CultureInfo.InvariantCulture);
- if (nthdayOfWeek < 1 || nthdayOfWeek > 5)
- {
- throw new Exception();
- }
- }
- catch (Exception)
- {
- throw new FormatException(
- "A numeric value between 1 and 5 must follow the '#' option");
- }
- }
- else if (c == 'L')
- {
- lastdayOfWeek = true;
- i++;
- }
- }
- }
- else
- {
- throw new FormatException(
- string.Format(CultureInfo.InvariantCulture, "Illegal characters for this position: '{0}'", sub));
- }
- if (eval != -1)
- {
- incr = 1;
- }
- AddToSet(sval, eval, incr, type);
- return (i + 3);
- }
-
- if (c == '?')
- {
- i++;
- if ((i + 1) < s.Length
- && (s[i] != ' ' && s[i + 1] != '\t'))
- {
- throw new FormatException("Illegal character after '?': "
- + s[i]);
- }
- if (type != DayOfWeek && type != DayOfMonth)
- {
- throw new FormatException(
- "'?' can only be specified for Day-of-Month or Day-of-Week.");
- }
- if (type == DayOfWeek && !lastdayOfMonth)
- {
- int val = (int) daysOfMonth[daysOfMonth.Count - 1];
- if (val == NoSpecInt)
- {
- throw new FormatException(
- "'?' can only be specified for Day-of-Month -OR- Day-of-Week.");
- }
- }
-
- AddToSet(NoSpecInt, -1, 0, type);
- return i;
- }
-
- if (c == '*' || c == '/')
- {
- if (c == '*' && (i + 1) >= s.Length)
- {
- AddToSet(AllSpecInt, -1, incr, type);
- return i + 1;
- }
- else if (c == '/'
- && ((i + 1) >= s.Length || s[i + 1] == ' ' || s[i + 1] == '\t'))
- {
- throw new FormatException("'/' must be followed by an integer.");
- }
- else if (c == '*')
- {
- i++;
- }
- c = s[i];
- if (c == '/')
- {
- // is an increment specified?
- i++;
- if (i >= s.Length)
- {
- throw new FormatException("Unexpected end of string.");
- }
-
- incr = GetNumericValue(s, i);
-
- i++;
- if (incr > 10)
- {
- i++;
- }
- if (incr > 59 && (type == Second || type == Minute))
- {
- throw new FormatException(
- string.Format(CultureInfo.InvariantCulture, "Increment > 60 : {0}", incr));
- }
- else if (incr > 23 && (type == Hour))
- {
- throw new FormatException(
- string.Format(CultureInfo.InvariantCulture, "Increment > 24 : {0}", incr));
- }
- else if (incr > 31 && (type == DayOfMonth))
- {
- throw new FormatException(
- string.Format(CultureInfo.InvariantCulture, "Increment > 31 : {0}", incr));
- }
- else if (incr > 7 && (type == DayOfWeek))
- {
- throw new FormatException(
- string.Format(CultureInfo.InvariantCulture, "Increment > 7 : {0}", incr));
- }
- else if (incr > 12 && (type == Month))
- {
- throw new FormatException(string.Format(CultureInfo.InvariantCulture, "Increment > 12 : {0}", incr));
- }
- }
- else
- {
- incr = 1;
- }
-
- AddToSet(AllSpecInt, -1, incr, type);
- return i;
- }
- else if (c == 'L')
- {
- i++;
- if (type == DayOfMonth)
- {
- lastdayOfMonth = true;
- }
- if (type == DayOfWeek)
- {
- AddToSet(7, 7, 0, type);
- }
- if (type == DayOfMonth && s.Length > i)
- {
- c = s[i];
- if (c == 'W')
- {
- nearestWeekday = true;
- i++;
- }
- }
- return i;
- }
- else if (c >= '0' && c <= '9')
- {
- int val = Convert.ToInt32(c.ToString(), CultureInfo.InvariantCulture);
- i++;
- if (i >= s.Length)
- {
- AddToSet(val, -1, -1, type);
- }
- else
- {
- c = s[i];
- if (c >= '0' && c <= '9')
- {
- ValueSet vs = GetValue(val, s, i);
- val = vs.theValue;
- i = vs.pos;
- }
- i = CheckNext(i, s, val, type);
- return i;
- }
- }
- else
- {
- throw new FormatException(string.Format(CultureInfo.InvariantCulture, "Unexpected character: {0}", c));
- }
-
- return i;
- }
-
- /// <summary>
- /// Checks the next value.
- /// </summary>
- /// <param name="pos">The position.</param>
- /// <param name="s">The string to check.</param>
- /// <param name="val">The value.</param>
- /// <param name="type">The type to search.</param>
- /// <returns></returns>
- protected virtual int CheckNext(int pos, string s, int val, int type)
- {
- int end = -1;
- int i = pos;
-
- if (i >= s.Length)
- {
- AddToSet(val, end, -1, type);
- return i;
- }
-
- char c = s[pos];
-
- if (c == 'L')
- {
- if (type == DayOfWeek)
- {
- lastdayOfWeek = true;
- }
- else
- {
- throw new FormatException(string.Format(CultureInfo.InvariantCulture, "'L' option is not valid here. (pos={0})", i));
- }
- TreeSet data = GetSet(type);
- data.Add(val);
- i++;
- return i;
- }
-
- if (c == 'W')
- {
- if (type == DayOfMonth)
- {
- nearestWeekday = true;
- }
- else
- {
- throw new FormatException(string.Format(CultureInfo.InvariantCulture, "'W' option is not valid here. (pos={0})", i));
- }
- TreeSet data = GetSet(type);
- data.Add(val);
- i++;
- return i;
- }
-
- if (c == '#')
- {
- if (type != DayOfWeek)
- {
- throw new FormatException(
- string.Format(CultureInfo.InvariantCulture, "'#' option is not valid here. (pos={0})", i));
- }
- i++;
- try
- {
- nthdayOfWeek = Convert.ToInt32(s.Substring(i), CultureInfo.InvariantCulture);
- if (nthdayOfWeek < 1 || nthdayOfWeek > 5)
- {
- throw new Exception();
- }
- }
- catch (Exception)
- {
- throw new FormatException(
- "A numeric value between 1 and 5 must follow the '#' option");
- }
-
- TreeSet data = GetSet(type);
- data.Add(val);
- i++;
- return i;
- }
-
- if (c == 'C')
- {
- if (type == DayOfWeek)
- {
- calendardayOfWeek = true;
- }
- else if (type == DayOfMonth)
- {
- calendardayOfMonth = true;
- }
- else
- {
- throw new FormatException(string.Format(CultureInfo.InvariantCulture, "'C' option is not valid here. (pos={0})", i));
- }
- TreeSet data = GetSet(type);
- data.Add(val);
- i++;
- return i;
- }
-
- if (c == '-')
- {
- i++;
- c = s[i];
- int v = Convert.ToInt32(c.ToString(), CultureInfo.InvariantCulture);
- end = v;
- i++;
- if (i >= s.Length)
- {
- AddToSet(val, end, 1, type);
- return i;
- }
- c = s[i];
- if (c >= '0' && c <= '9')
- {
- ValueSet vs = GetValue(v, s, i);
- int v1 = vs.theValue;
- end = v1;
- i = vs.pos;
- }
- if (i < s.Length && ((c = s[i]) == '/'))
- {
- i++;
- c = s[i];
- int v2 = Convert.ToInt32(c.ToString(), CultureInfo.InvariantCulture);
- i++;
- if (i >= s.Length)
- {
- AddToSet(val, end, v2, type);
- return i;
- }
- c = s[i];
- if (c >= '0' && c <= '9')
- {
- ValueSet vs = GetValue(v2, s, i);
- int v3 = vs.theValue;
- 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 == '/')
- {
- i++;
- c = s[i];
- int v2 = Convert.ToInt32(c.ToString(), CultureInfo.InvariantCulture);
- i++;
- if (i >= s.Length)
- {
- AddToSet(val, end, v2, type);
- return i;
- }
- c = s[i];
- if (c >= '0' && c <= '9')
- {
- ValueSet vs = GetValue(v2, s, i);
- int v3 = vs.theValue;
- AddToSet(val, end, v3, type);
- i = vs.pos;
- return i;
- }
- else
- {
- throw new FormatException(string.Format(CultureInfo.InvariantCulture, "Unexpected character '{0}' after '/'", c));
- }
- }
-
- AddToSet(val, end, 0, type);
- i++;
- return i;
- }
-
- /// <summary>
- /// Gets the cron expression string.
- /// </summary>
- /// <value>The cron expression string.</value>
- public string CronExpressionString
- {
- get { return cronExpressionString; }
- }
-
- /// <summary>
- /// Gets the expression summary.
- /// </summary>
- /// <returns></returns>
- public virtual 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("calendardayOfWeek: ");
- buf.Append(calendardayOfWeek);
- buf.Append("\n");
- buf.Append("calendardayOfMonth: ");
- buf.Append(calendardayOfMonth);
- buf.Append("\n");
- buf.Append("years: ");
- buf.Append(GetExpressionSetSummary(years));
- buf.Append("\n");
-
- return buf.ToString();
- }
-
- /// <summary>
- /// Gets the expression set summary.
- /// </summary>
- /// <param name="data">The data.</param>
- /// <returns></returns>
- protected virtual string GetExpressionSetSummary(ISet data)
- {
- if (data.Contains(NoSpec))
- {
- return "?";
- }
- if (data.Contains(AllSpec))
- {
- return "*";
- }
-
- StringBuilder buf = new StringBuilder();
-
- bool first = true;
- foreach (int iVal in data)
- {
- string val = iVal.ToString(CultureInfo.InvariantCulture);
- if (!first)
- {
- buf.Append(",");
- }
- buf.Append(val);
- first = false;
- }
-
- return buf.ToString();
- }
-
- /// <summary>
- /// Skips the white space.
- /// </summary>
- /// <param name="i">The i.</param>
- /// <param name="s">The s.</param>
- /// <returns></returns>
- protected virtual int SkipWhiteSpace(int i, string s)
- {
- for (; i < s.Length && (s[i] == ' ' || s[i] == '\t'); i++)
- {
- ;
- }
-
- return i;
- }
-
- /// <summary>
- /// Finds the next white space.
- /// </summary>
- /// <param name="i">The i.</param>
- /// <param name="s">The s.</param>
- /// <returns></returns>
- protected virtual int FindNextWhiteSpace(int i, string s)
- {
- for (; i < s.Length && (s[i] != ' ' || s[i] != '\t'); i++)
- {
- ;
- }
-
- return i;
- }
-
- /// <summary>
- /// Adds to set.
- /// </summary>
- /// <param name="val">The val.</param>
- /// <param name="end">The end.</param>
- /// <param name="incr">The incr.</param>
- /// <param name="type">The type.</param>
- protected virtual void AddToSet(int val, int end, int incr, int type)
- {
- TreeSet data = GetSet(type);
-
- if (type == Second || type == Minute)
- {
- if ((val < 0 || val > 59 || end > 59) && (val != AllSpecInt))
- {
- throw new FormatException(
- "Minute and Second values must be between 0 and 59");
- }
- }
- else if (type == Hour)
- {
- if ((val < 0 || val > 23 || end > 23) && (val != AllSpecInt))
- {
- throw new FormatException(
- "Hour values must be between 0 and 23");
- }
- }
- else if (type == DayOfMonth)
- {
- if ((val < 1 || val > 31 || end > 31) && (val != AllSpecInt)
- && (val != NoSpecInt))
- {
- throw new FormatException(
- "Day of month values must be between 1 and 31");
- }
- }
- else if (type == Month)
- {
- if ((val < 1 || val > 12 || end > 12) && (val != AllSpecInt))
- {
- throw new FormatException(
- "Month values must be between 1 and 12");
- }
- }
- else if (type == DayOfWeek)
- {
- if ((val == 0 || val > 7 || end > 7) && (val != AllSpecInt)
- && (val != NoSpecInt))
- {
- throw new FormatException(
- "Day-of-Week values must be between 1 and 7");
- }
- }
-
- if ((incr == 0 || incr == -1) && val != AllSpecInt)
- {
- if (val != -1)
- {
- data.Add(val);
- }
- else
- {
- data.Add(NoSpec);
- }
- return;
- }
-
- int startAt = val;
- int stopAt = end;
-
- if (val == AllSpecInt && incr <= 0)
- {
- incr = 1;
- data.Add(AllSpec); // put in a marker, but also fill values
- }
-
- if (type == Second || type == Minute)
- {
- if (stopAt == -1)
- {
- stopAt = 59;
- }
- if (startAt == -1 || startAt == AllSpecInt)
- {
- startAt = 0;
- }
- }
- else if (type == Hour)
- {
- if (stopAt == -1)
- {
- stopAt = 23;
- }
- if (startAt == -1 || startAt == AllSpecInt)
- {
- startAt = 0;
- }
- }
- else if (type == DayOfMonth)
- {
- if (stopAt == -1)
- {
- stopAt = 31;
- }
- if (startAt == -1 || startAt == AllSpecInt)
- {
- startAt = 1;
- }
- }
- else if (type == Month)
- {
- if (stopAt == -1)
- {
- stopAt = 12;
- }
- if (startAt == -1 || startAt == AllSpecInt)
- {
- startAt = 1;
- }
- }
- else if (type == DayOfWeek)
- {
- if (stopAt == -1)
- {
- stopAt = 7;
- }
- if (startAt == -1 || startAt == AllSpecInt)
- {
- startAt = 1;
- }
- }
- else if (type == Year)
- {
- if (stopAt == -1)
- {
- stopAt = 2099;
- }
- if (startAt == -1 || startAt == AllSpecInt)
- {
- 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 DayOfWeek: max = 7; break;
- case DayOfMonth: max = 31; break;
- case Year: throw new ArgumentException("Start year must be less than stop year");
- default: throw new ArgumentException("Unexpected type encountered");
- }
- stopAt += max;
- }
-
- for (int i = startAt; i <= stopAt; i += incr)
- {
- if (max == -1)
- {
- // ie: there's no max to overflow over
- data.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 == DayOfWeek || type == DayOfMonth))
- {
- i2 = max;
- }
-
- data.Add(i2);
- }
- }
- }
-
- /// <summary>
- /// Gets the set of given type.
- /// </summary>
- /// <param name="type">The type of set to get.</param>
- /// <returns></returns>
- protected virtual TreeSet GetSet(int type)
- {
- switch (type)
- {
- case Second:
- return seconds;
- case Minute:
- return minutes;
- case Hour:
- return hours;
- case DayOfMonth:
- return daysOfMonth;
- case Month:
- return months;
- case DayOfWeek:
- return daysOfWeek;
- case Year:
- return years;
- default:
- return null;
- }
- }
-
- /// <summary>
- /// Gets the value.
- /// </summary>
- /// <param name="v">The v.</param>
- /// <param name="s">The s.</param>
- /// <param name="i">The i.</param>
- /// <returns></returns>
- protected virtual ValueSet GetValue(int v, string s, int i)
- {
- char c = s[i];
- string s1 = v.ToString(CultureInfo.InvariantCulture);
- while (c >= '0' && c <= '9')
- {
- s1 += c;
- i++;
- if (i >= s.Length)
- {
- break;
- }
- c = s[i];
- }
- ValueSet val = new ValueSet();
- if (i < s.Length)
- {
- val.pos = i;
- }
- else
- {
- val.pos = i + 1;
- }
- val.theValue = Convert.ToInt32(s1, CultureInfo.InvariantCulture);
- return val;
- }
-
- /// <summary>
- /// Gets the numeric value from string.
- /// </summary>
- /// <param name="s">The string to parse from.</param>
- /// <param name="i">The i.</param>
- /// <returns></returns>
- protected virtual int GetNumericValue(string s, int i)
- {
- int endOfVal = FindNextWhiteSpace(i, s);
- string val = s.Substring(i, endOfVal - i);
- return Convert.ToInt32(val, CultureInfo.InvariantCulture);
- }
-
- /// <summary>
- /// Gets the month number.
- /// </summary>
- /// <param name="s">The string to map with.</param>
- /// <returns></returns>
- protected virtual int GetMonthNumber(string s)
- {
- if (monthMap.ContainsKey(s))
- {
- return (int) monthMap[s];
- }
- else
- {
- return -1;
- }
- }
-
- /// <summary>
- /// Gets the day of week number.
- /// </summary>
- /// <param name="s">The s.</param>
- /// <returns></returns>
- protected virtual int GetDayOfWeekNumber(string s)
- {
- if (dayMap.ContainsKey(s))
- {
- return (int) dayMap[s];
- }
- else
- {
- return -1;
- }
- }
-
- /// <summary>
- /// Gets the time from given time parts.
- /// </summary>
- /// <param name="sc">The seconds.</param>
- /// <param name="mn">The minutes.</param>
- /// <param name="hr">The hours.</param>
- /// <param name="dayofmn">The day of month.</param>
- /// <param name="mon">The month.</param>
- /// <returns></returns>
- protected virtual NullableDateTime GetTime(int sc, int mn, int hr, int dayofmn, int mon)
- {
- try
- {
- if (sc == -1)
- {
- sc = 0;
- }
- if (mn == -1)
- {
- mn = 0;
- }
- if (hr == -1)
- {
- hr = 0;
- }
- if (dayofmn == -1)
- {
- dayofmn = 0;
- }
- if (mon == -1)
- {
- mon = 0;
- }
- return new DateTime(DateTime.UtcNow.Year, mon, dayofmn, hr, mn, sc);
- }
- catch (Exception)
- {
- return null;
- }
- }
-
- /// <summary>
- /// Gets the next fire time after the given time.
- /// </summary>
- /// <param name="afterTimeUtc">The UTC time to start searching from.</param>
- /// <returns></returns>
- public virtual NullableDateTime GetTimeAfter(DateTime afterTimeUtc)
- {
- // move ahead one second, since we're computing the time *after/// the
- // given time
- afterTimeUtc = afterTimeUtc.AddSeconds(1);
-
- // CronTrigger does not deal with milliseconds
- DateTime d = CreateDateTimeWithoutMillis(afterTimeUtc);
-
- // change to specified time zone
-
- d = TimeZone.ToLocalTime(d);
-
-
- bool gotOne = false;
- // loop until we've computed the next time, or we've past the endTime
- while (!gotOne)
- {
- ISortedSet st;
- int t;
- int sec = d.Second;
-
- // get second.................................................
- st = seconds.TailSet(sec);
- if (st != null && st.Count != 0)
- {
- sec = (int) st.First();
- }
- else
- {
- sec = ((int) seconds.First());
- d = d.AddMinutes(1);
- }
- d = new DateTime(d.Year, d.Month, d.Day, d.Hour, d.Minute, sec, d.Millisecond);
-
- int min = d.Minute;
- int hr = d.Hour;
- t = -1;
-
- // get minute.................................................
- st = minutes.TailSet(min);
- if (st != null && st.Count != 0)
- {
- t = min;
- min = ((int) st.First());
- }
- else
- {
- min = (int) minutes.First();
- hr++;
- }
- if (min != t)
- {
- d = new DateTime(d.Year, d.Month, d.Day, d.Hour, min, 0, d.Millisecond);
- d = SetCalendarHour(d, hr);
- continue;
- }
- d = new DateTime(d.Year, d.Month, d.Day, d.Hour, min, d.Second, d.Millisecond);
-
- hr = d.Hour;
- int day = d.Day;
- t = -1;
-
- // get hour...................................................
- st = hours.TailSet(hr);
- if (st != null && st.Count != 0)
- {
- t = hr;
- hr = (int) st.First();
- }
- else
- {
- hr = (int) hours.First();
- day++;
- }
- if (hr != t)
- {
- int daysInMonth = DateTime.DaysInMonth(d.Year, d.Month);
- if (day > daysInMonth)
- {
- d = new DateTime(d.Year, d.Month, daysInMonth, d.Hour, 0, 0, d.Millisecond).AddDays(day - daysInMonth);
- }
- else
- {
- d = new DateTime(d.Year, d.Month, day, d.Hour, 0, 0, d.Millisecond);
- }
- d = SetCalendarHour(d, hr);
- continue;
- }
- d = new DateTime(d.Year, d.Month, d.Day, hr, d.Minute, d.Second, d.Millisecond);
-
- day = d.Day;
- int mon = d.Month;
- t = -1;
- int tmon = mon;
-
- // get day...................................................
- bool dayOfMSpec = !daysOfMonth.Contains(NoSpec);
- bool dayOfWSpec = !daysOfWeek.Contains(NoSpec);
- if (dayOfMSpec && !dayOfWSpec)
- {
- // get day by day of month rule
- st = daysOfMonth.TailSet(day);
- if (lastdayOfMonth)
- {
- if (!nearestWeekday)
- {
- t = day;
- day = GetLastDayOfMonth(mon, d.Year);
- }
- else
- {
- t = day;
- day = GetLastDayOfMonth(mon, d.Year);
-
- DateTime tcal = new DateTime(d.Year, mon, day, 0, 0, 0);
-
- int ldom = GetLastDayOfMonth(mon, d.Year);
- DayOfWeek dow = tcal.DayOfWeek;
-
- if (dow == System.DayOfWeek.Saturday && day == 1)
- {
- day += 2;
- }
- else if (dow == System.DayOfWeek.Saturday)
- {
- day -= 1;
- }
- else if (dow == System.DayOfWeek.Sunday && day == ldom)
- {
- day -= 2;
- }
- else if (dow == System.DayOfWeek.Sunday)
- {
- day += 1;
- }
-
- DateTime nTime = new DateTime(tcal.Year, mon, day, hr, min, sec, d.Millisecond);
- if (nTime.ToUniversalTime() < afterTimeUtc)
- {
- day = 1;
- mon++;
- }
- }
- }
- else if (nearestWeekday)
- {
- t = day;
- day = (int) daysOfMonth.First();
-
- DateTime tcal = new DateTime(d.Year, mon, day, 0, 0, 0);
-
- int ldom = GetLastDayOfMonth(mon, d.Year);
- DayOfWeek dow = tcal.DayOfWeek;
-
- if (dow == System.DayOfWeek.Saturday && day == 1)
- {
- day += 2;
- }
- else if (dow == System.DayOfWeek.Saturday)
- {
- day -= 1;
- }
- else if (dow == System.DayOfWeek.Sunday && day == ldom)
- {
- day -= 2;
- }
- else if (dow == System.DayOfWeek.Sunday)
- {
- day += 1;
- }
-
- tcal = new DateTime(tcal.Year, mon, day, hr, min, sec);
- if (tcal.ToUniversalTime() < afterTimeUtc)
- {
- day = ((int) daysOfMonth.First());
- mon++;
- }
- }
- else if (st != null && st.Count != 0)
- {
- t = day;
- day = (int) st.First();
-
- // make sure we don't over-run a short month, such as february
- int lastDay = GetLastDayOfMonth(mon, d.Year);
- if (day > lastDay)
- {
- day = (int) daysOfMonth.First();
- mon++;
- }
- }
- else
- {
- day = ((int) daysOfMonth.First());
- mon++;
- }
-
- if (day != t || mon != tmon)
- {
- if (mon > 12)
- {
- d = new DateTime(d.Year, 12, day, 0, 0, 0).AddMonths(mon - 12);
- }
- else
- {
- // This is to avoid a bug when moving from a month
- //with 30 or 31 days to a month with less. Causes an invalid datetime to be instantiated.
- // ex. 0 29 0 30 1 ? 2009 with clock set to 1/30/2009
- int lDay = DateTime.DaysInMonth(d.Year, mon);
- if (day <= lDay)
- {
- d = new DateTime(d.Year, mon, day, 0, 0, 0);
- }
- else
- {
- d = new DateTime(d.Year, mon, lDay, 0, 0, 0).AddDays(day - lDay);
- }
- }
- 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 = ((int) daysOfWeek.First()); // desired
- // d-o-w
- int cDow = ((int) d.DayOfWeek) + 1; // current d-o-w
- int daysToAdd = 0;
- if (cDow < dow)
- {
- daysToAdd = dow - cDow;
- }
- if (cDow > dow)
- {
- daysToAdd = dow + (7 - cDow);
- }
-
- int lDay = GetLastDayOfMonth(mon, d.Year);
-
- if (day + daysToAdd > lDay)
- {
- // did we already miss the
- // last one?
- if (mon == 12)
- {
- //will we pass the end of the year?
- d = new DateTime(d.Year, mon - 11, 1, 0, 0, 0).AddYears(1);
- }
- else
- {
- d = new DateTime(d.Year, mon + 1, 1, 0, 0, 0);
- }
- // we are promoting the month
- continue;
- }
-
- // find date of last occurance of this day in this month...
- while ((day + daysToAdd + 7) <= lDay)
- {
- daysToAdd += 7;
- }
-
- day += daysToAdd;
-
- if (daysToAdd > 0)
- {
- d = new DateTime(d.Year, mon, day, 0, 0, 0);
- // we are not promoting the month
- continue;
- }
- }
- else if (nthdayOfWeek != 0)
- {
- // are we looking for the Nth XXX day in the month?
- int dow = ((int) daysOfWeek.First()); // desired
- // d-o-w
- int cDow = ((int) d.DayOfWeek) + 1; // current d-o-w
- int daysToAdd = 0;
- if (cDow < dow)
- {
- daysToAdd = dow - cDow;
- }
- else if (cDow > dow)
- {
- daysToAdd = dow + (7 - cDow);
- }
-
- bool 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, d.Year))
- {
- if (mon == 12)
- {
- d = new DateTime(d.Year, mon - 11, 1, 0, 0, 0).AddYears(1);
- }
- else
- {
- d = new DateTime(d.Year, mon + 1, 1, 0, 0, 0);
- }
-
- // we are promoting the month
- continue;
- }
- else if (daysToAdd > 0 || dayShifted)
- {
- d = new DateTime(d.Year, mon, day, 0, 0, 0);
- // we are NOT promoting the month
- continue;
- }
- }
- else
- {
- int cDow = ((int) d.DayOfWeek) + 1; // current d-o-w
- int dow = ((int) daysOfWeek.First()); // desired
- // d-o-w
- st = daysOfWeek.TailSet(cDow);
- if (st != null && st.Count > 0)
- {
- dow = ((int) st.First());
- }
-
- int daysToAdd = 0;
- if (cDow < dow)
- {
- daysToAdd = dow - cDow;
- }
- if (cDow > dow)
- {
- daysToAdd = dow + (7 - cDow);
- }
-
- int lDay = GetLastDayOfMonth(mon, d.Year);
-
- if (day + daysToAdd > lDay)
- {
- // will we pass the end of the month?
-
- if (mon == 12)
- {
- //will we pass the end of the year?
- d = new DateTime(d.Year, mon - 11, 1, 0, 0, 0).AddYears(1);
- }
- else
- {
- d = new DateTime(d.Year, mon + 1, 1, 0, 0, 0);
- }
- // we are promoting the month
- continue;
- }
- else if (daysToAdd > 0)
- {
- // are we swithing days?
- d = new DateTime(d.Year, mon, day + daysToAdd, 0, 0, 0);
- continue;
- }
- }
- }
- else
- {
- // dayOfWSpec && !dayOfMSpec
- throw new Exception(
- "Support for specifying both a day-of-week AND a day-of-month parameter is not implemented.");
- }
-
- d = new DateTime(d.Year, d.Month, day, d.Hour, d.Minute, d.Second);
- mon = d.Month;
- int year = d.Year;
- t = -1;
-
- // test for expressions that never generate a valid fire date,
- // but keep looping...
- if (year > 2099)
- {
- return null;
- }
-
- // get month...................................................
- st = months.TailSet((mon));
- if (st != null && st.Count != 0)
- {
- t = mon;
- mon = ((int) st.First());
- }
- else
- {
- mon = ((int) months.First());
- year++;
- }
- if (mon != t)
- {
- d = new DateTime(year, mon, 1, 0, 0, 0);
- continue;
- }
- d = new DateTime(d.Year, mon, d.Day, d.Hour, d.Minute, d.Second);
- year = d.Year;
- t = -1;
-
- // get year...................................................
- st = years.TailSet((year));
- if (st != null && st.Count != 0)
- {
- t = year;
- year = ((int) st.First());
- }
- else
- {
- return null;
- } // ran out of years...
-
- if (year != t)
- {
- d = new DateTime(year, 1, 1, 0, 0, 0);
- continue;
- }
- d = new DateTime(year, d.Month, d.Day, d.Hour, d.Minute, d.Second);
-
- gotOne = true;
- } // while( !done )
- return TimeZone.ToUniversalTime(d);
- }
-
- /// <summary>
- /// Creates the date time without milliseconds.
- /// </summary>
- /// <param name="time">The time.</param>
- /// <returns></returns>
- protected static DateTime CreateDateTimeWithoutMillis(DateTime time)
- {
- return new DateTime(time.Year, time.Month, time.Day, time.Hour, time.Minute, time.Second);
- }
-
-
- /// <summary>
- /// Advance the calendar to the particular hour paying particular attention
- /// to daylight saving problems.
- /// </summary>
- /// <param name="date">The date.</param>
- /// <param name="hour">The hour.</param>
- /// <returns></returns>
- protected static DateTime SetCalendarHour(DateTime date, int hour)
- {
- // Java version of Quartz uses lenient calendar
- // so hour 24 creates day increment and zeroes hour
- int hourToSet = hour;
- if (hourToSet == 24)
- {
- hourToSet = 0;
- }
- DateTime d =
- new DateTime(date.Year, date.Month, date.Day, hourToSet, date.Minute, date.Second, date.Millisecond);
- if (hour == 24)
- {
- // inrement day
- d = d.AddDays(1);
- }
- return d;
- }
-
- /// <summary>
- /// Gets the time before.
- /// </summary>
- /// <param name="endTime">The end time.</param>
- /// <returns></returns>
- public virtual NullableDateTime GetTimeBefore(NullableDateTime endTime)
- {
- // TODO: implement
- return null;
- }
-
- /// <summary>
- /// NOT YET IMPLEMENTED: Returns the final time that the
- /// <see cref="CronExpression" /> will match.
- /// </summary>
- /// <returns></returns>
- public virtual NullableDateTime GetFinalFireTime()
- {
- // TODO: implement QUARTZ-423
- return null;
- }
-
- /// <summary>
- /// Determines whether given year is a leap year.
- /// </summary>
- /// <param name="year">The year.</param>
- /// <returns>
- /// <c>true</c> if the specified year is a leap year; otherwise, <c>false</c>.
- /// </returns>
- protected virtual bool IsLeapYear(int year)
- {
- return DateTime.IsLeapYear(year);
- }
-
- /// <summary>
- /// Gets the last day of month.
- /// </summary>
- /// <param name="monthNum">The month num.</param>
- /// <param name="year">The year.</param>
- /// <returns></returns>
- protected virtual int GetLastDayOfMonth(int monthNum, int year)
- {
- return DateTime.DaysInMonth(year, monthNum);
- }
-
- /// <summary>
- /// Creates a new object that is a copy of the current instance.
- /// </summary>
- /// <returns>
- /// A new object that is a copy of this instance.
- /// </returns>
- public object Clone()
- {
- CronExpression copy;
- try
- {
- copy = new CronExpression(CronExpressionString);
- copy.TimeZone = TimeZone;
- }
- catch (FormatException)
- {
- // never happens since the source is valid...
- throw new Exception("Not Cloneable.");
- }
- return copy;
- }
-
- public void OnDeserialization(object sender)
- {
- BuildExpression(cronExpressionString);
- }
- }
-
- /// <summary>
- /// Helper class for cron expression handling.
- /// </summary>
- public class ValueSet
- {
- /// <summary>
- /// The value.
- /// </summary>
- public int theValue;
-
- /// <summary>
- /// The position.
- /// </summary>
- public int pos;
- }
- }