/// <summary>
/// Parses the specified text into a schedule object.
/// </summary>
/// <param name="text">The text.</param>
/// <returns>
/// Returns null if the text is invalid.
/// </returns>
public TextToScheduleResults Parse(string text)
{
text = GrammarHelper.Normalize(text);
TextToScheduleResults results = new TextToScheduleResults();
bool matched = false;
if (ExecuteMatch(Grammar.Expression1, text, results, Expression1Handler))
{
matched = true;
}
else if (ExecuteMatch(Grammar.Expression2, text, results, Expression2Handler))
{
matched = true;
}
else if (ExecuteMatch(Grammar.Expression3, text, results, Expression3Handler))
{
matched = true;
}
if (matched)
return results;
else
return null;
}
private static void InputChanged(object sender, DependencyPropertyChangedEventArgs e)
{
var m = (sender) as Model;
m.Triggers.Clear();
TextToScheduleResults results = null;
try
{
CronExpression cron = new CronExpression(m.Input);
results = new TextToScheduleResults();
results.Add(TriggerBuilder.Create()
.WithCronSchedule(m.Input));
}
catch
{
var english = TextToScheduleFactory.CreateEnglishParser();
results = english.Parse(m.Input);
}
if (results == null)
{
try
{
//try german verion
var german = new TextToSchedule(new AndrewSmith.Quartz.TextToSchedule.Grammars.GermanGrammar(), new AndrewSmith.Quartz.TextToSchedule.Grammars.GermanGrammarHelper());
results = german.Parse(m.Input);
}
catch
{
}
}
if (results != null)
{
List<DateTime> list = new List<DateTime>();
foreach (var groups in results.RegisterGroups)
{
var trigger = (IOperableTrigger)groups.TriggerBuilder.Build();
var dates = TriggerUtils.ComputeFireTimes(trigger, groups.Calendar, MaxResultsToReturn);
foreach (var d in dates)
{
list.Add(d.ToLocalTime().DateTime);
}
}
//sort the list
list.Sort();
foreach (var item in list.Take(MaxResultsToReturn))
{
m.Triggers.Add(item.ToString("ddd, MM/dd/yyyy hh:mm:ss tt"));
}
}
}
/// <summary>
/// Method that matches an expression, and if it does will run the associated method
/// </summary>
/// <param name="expression">The expression.</param>
/// <param name="input">The input.</param>
/// <param name="results">The results.</param>
/// <param name="matchFunction">The match function to run if it matches.</param>
/// <returns></returns>
private static bool ExecuteMatch(string expression, string input, TextToScheduleResults results, Action<NameValueCollection, TextToScheduleResults> matchFunction)
{
expression = "^" + expression + "$";
var dic = RegexHelper.GetNamedMatches(input, expression);
if (dic != null)
{
matchFunction(dic, results);
return true;
}
return false;
}
/// <summary>
/// Handles with a given text matches the Expression2 field.
/// </summary>
/// <param name="nameValueCollection">A collection of values from the named capture groups.</param>
/// <param name="results">The results.</param>
private void Expression3Handler(NameValueCollection nameValueCollection, TextToScheduleResults results)
{
var time = nameValueCollection["TIME"];
var dateSpec = nameValueCollection["DATESPEC"];
var month = nameValueCollection["MONTH"];
var day = nameValueCollection["DAY"];
var year = nameValueCollection["YEAR"];
DateTime date = DateTime.Today; //default date to today
if (time != null)
{
date = GrammarHelper.GetTimeFromTimeString(time).Value;
}
//init cron values
List<string> cronExpressions = new List<string>();
string cron_sec = date.Second.ToString();
string cron_min = date.Minute.ToString();
string cron_hour = date.Hour.ToString();
string cron_day = "*";
string cron_month = "*";
string cron_dayofWeek = "?";
string cron_year = null;
cron_month = GetMonthCronValue(GrammarHelper.GetMonthValue(month));
cron_day = day;
if (year != null)
cron_year = GetYearCronValue(GrammarHelper.GetYearValue(year));
//build cron string
string cronString = null;
if (cron_year != null)
cronString = string.Format(string.Join(" ", new string[] { cron_sec, cron_min, cron_hour, cron_day, cron_month, cron_dayofWeek, cron_year }));
else
cronString = string.Format(string.Join(" ", new string[] { cron_sec, cron_min, cron_hour, cron_day, cron_month, cron_dayofWeek }));
//add cron string
cronExpressions.Add(cronString);
foreach (var item in cronExpressions)
{
var triggerBuilder = TriggerBuilder.Create();
CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.CronSchedule(item);
triggerBuilder.WithSchedule(cronScheduleBuilder);
ITrigger trigger = triggerBuilder.Build();
results.Add(triggerBuilder);
}
}
/// <summary>
/// Handles with a given text matches the Expression2 field.
/// </summary>
/// <param name="nameValueCollection">A collection of values from the named capture groups.</param>
/// <param name="results">The results.</param>
private void Expression2Handler(NameValueCollection nameValueCollection, TextToScheduleResults results)
{
var time = nameValueCollection["TIME"];
var fromTime = nameValueCollection["FROMTIME"];
var toTime = nameValueCollection["TOTIME"];
var dayOfWeekSpecs = nameValueCollection.GetValues("DAYOFWEEK");
var monthSpecs = nameValueCollection.GetValues("MONTH");
var ordinals = nameValueCollection.GetValues("ORDINAL");
DateTime date = DateTime.Today; //default date to today
if (time != null)
{
date = GrammarHelper.GetTimeFromTimeString(time).Value;
}
//init cron values
List<string> cronExpressions = new List<string>();
string cron_sec = date.Second.ToString();
string cron_min = date.Minute.ToString();
string cron_hour = date.Hour.ToString();
string cron_day = "?";
string cron_month = "*";
string cron_dayofWeek = "*";
if (monthSpecs != null)
{
var months = GrammarHelper.GetMonthValues(monthSpecs);
cron_month = string.Join(",", months.Select(mon => GetMonthCronValue(mon)));
}
if (dayOfWeekSpecs != null)
{
var dows = GrammarHelper.GetDayOfWeekValues(dayOfWeekSpecs);
cron_dayofWeek = string.Join(",", dows.Select(x => GetDayOfWeekCronValue(x)));
}
if (ordinals != null)
{
if (dayOfWeekSpecs != null)
{
//combine ordinals and dayOfWeeks
var combined =
from a in GrammarHelper.GetOrdinalValues(ordinals)
from b in GrammarHelper.GetDayOfWeekValues(dayOfWeekSpecs)
select new { Ordinal = a, DayOfWeek = b };
foreach (var item in combined)
{
cron_dayofWeek = GetDayOfWeekCronValue(item.DayOfWeek);
cron_dayofWeek += GetOrdinalCronValue(item.Ordinal);
string cronString = string.Format(string.Join(" ", new string[] { cron_sec, cron_min, cron_hour, cron_day, cron_month, cron_dayofWeek }));
cronExpressions.Add(cronString);
}
}
if (dayOfWeekSpecs == null) //day was specified, handle special case
{
//handle special cases
cron_dayofWeek = "?";
foreach (var o in GrammarHelper.GetOrdinalValues(ordinals))
{
cron_day = GetOrdinalCronValue(o).Replace("#", "");
string cronString = string.Format(string.Join(" ", new string[] { cron_sec, cron_min, cron_hour, cron_day, cron_month, cron_dayofWeek }));
cronExpressions.Add(cronString);
}
}
}
else //no ordinal was specified
{
string cronString = string.Format(string.Join(" ", new string[] { cron_sec, cron_min, cron_hour, cron_day, cron_month, cron_dayofWeek }));
cronExpressions.Add(cronString);
}
foreach (var item in cronExpressions)
{
var triggerBuilder = TriggerBuilder.Create();
CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.CronSchedule(item);
triggerBuilder.WithSchedule(cronScheduleBuilder);
ITrigger trigger = triggerBuilder.Build();
results.Add(triggerBuilder);
}
}
/// <summary>
/// Handles with a given text matches the Expression1 field.
/// </summary>
/// <param name="nameValueCollection">A collection of values from the named capture groups.</param>
/// <param name="results">The results.</param>
private void Expression1Handler(NameValueCollection nameValueCollection, TextToScheduleResults results)
{
var amount = nameValueCollection["AMOUNT"];
var timeValue = nameValueCollection["TIMEVALUE"];
var startDate = nameValueCollection["DATESPEC"];
var time = nameValueCollection["TIME"];
var fromTime = nameValueCollection["FROMTIME"];
var toTime = nameValueCollection["TOTIME"];
var dayOfWeekSpecs = nameValueCollection.GetValues("DAYOFWEEK");
var monthSpecs = nameValueCollection.GetValues("MONTH");
TimeSpan interval = BuildTimeInterval(timeValue, amount);
DateTime? triggerStartTime = null;
ICalendar calendar = null;
//DAY OF WEEK SPECS
if (dayOfWeekSpecs != null)
{
calendar = BuildCalendarOnDayOfWeek(calendar, dayOfWeekSpecs);
}
//MONTH SPECS (I had to put this after the day of week, because chaining the calendar's didn't seem to compute properly)
if (monthSpecs != null)
{
calendar = BuildCalendarOnMonths(calendar, monthSpecs);
}
//TIME (single or range)
//check for ranged time
if (fromTime != null && toTime != null)
{
calendar = BuildCalendarOnTimeRange(calendar, fromTime, toTime);
//set the start date as the from time
DateTime? fromTimeStartDate = GrammarHelper.GetTimeFromTimeString(fromTime);
triggerStartTime = fromTimeStartDate;
}
//is regualr time, process as single time provided
else if (time != null)
{
DateTime? timeStartDate = GrammarHelper.GetTimeFromTimeString(time);
triggerStartTime = timeStartDate;
}
//BUILD TRIGGER
TriggerBuilder triggerBuilder = TriggerBuilder.Create();
SimpleScheduleBuilder simpleBuilder = SimpleScheduleBuilder.Create();
simpleBuilder.WithInterval(interval);
simpleBuilder.RepeatForever();
triggerBuilder.WithSchedule(simpleBuilder);
//start on from time
if (triggerStartTime != null)
triggerBuilder.StartAt(new DateTimeOffset(triggerStartTime.Value));
results.Add(triggerBuilder, calendar);
}
