/// <summary>
/// Tries to find time within the passed string and return it as ParsedDateTime object.
/// It recognizes only time while ignoring date, so date in the returned ParsedDateTime is always 1/1/1
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="default_format">format that must be used preferably in ambivalent instances</param>
/// <param name="parsed_time">parsed date-time output</param>
/// <returns>true if time was found, else false</returns>
static public bool TryParseTime(string str, DateTimeFormat default_format, out ParsedDateTime parsed_time)
{
lock (lock_variable)
{
return(TryParseTime(str, default_format, out parsed_time, null));
}
}
/// <summary>
/// Tries to find date and(or) time within the passed string and return it as ParsedDateTime object.
/// If only date was found, time in the returned ParsedDateTime is always 0:0:0.
/// If only time was found, date in the returned ParsedDateTime is DefaultDate.
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="default_format">format that must be used preferably in ambivalent instances</param>
/// <param name="parsed_date_time">parsed date-time output</param>
/// <returns>true if date or time was found, else false</returns>
static public bool TryParse(string str, DateTimeFormat default_format, out ParsedDateTime parsed_date_time)
{
lock (lock_variable)
{
parsed_date_time = null;
ParsedDateTime parsed_date;
ParsedDateTime parsed_time;
if (!TryParseDate(str, default_format, out parsed_date))
{
if (!TryParseTime(str, default_format, out parsed_time, null))
{
return(false);
}
System.DateTime date_time = new System.DateTime(DefaultDate.Year, DefaultDate.Month, DefaultDate.Day, parsed_time.DateTime.Hour, parsed_time.DateTime.Minute, parsed_time.DateTime.Second);
parsed_date_time = new ParsedDateTime(-1, -1, parsed_time.IndexOfTime, parsed_time.LengthOfTime, date_time);
}
else
{
if (!TryParseTime(str, default_format, out parsed_time, parsed_date))
{
System.DateTime date_time = new System.DateTime(parsed_date.DateTime.Year, parsed_date.DateTime.Month, parsed_date.DateTime.Day, 0, 0, 0);
parsed_date_time = new ParsedDateTime(parsed_date.IndexOfDate, parsed_date.LengthOfDate, -1, -1, date_time);
}
else
{
System.DateTime date_time = new System.DateTime(parsed_date.DateTime.Year, parsed_date.DateTime.Month, parsed_date.DateTime.Day, parsed_time.DateTime.Hour, parsed_time.DateTime.Minute, parsed_time.DateTime.Second);
parsed_date_time = new ParsedDateTime(parsed_date.IndexOfDate, parsed_date.LengthOfDate, parsed_time.IndexOfTime, parsed_time.LengthOfTime, date_time);
}
}
return(true);
}
}
public static bool TryParseDateOrTime(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_date_time)
{
parsed_date_time = null;
ParsedDateTime parsed_date;
ParsedDateTime parsed_time;
if (!TryParseDate(str, default_format, out parsed_date))
{
if (!TryParseTime(str, default_format, out parsed_time, null))
{
return(false);
}
var date_time = new DateTime(DefaultDate.Year, DefaultDate.Month, DefaultDate.Day, parsed_time.DateTime.Hour, parsed_time.DateTime.Minute, parsed_time.DateTime.Second);
parsed_date_time = new ParsedDateTime(-1, -1, parsed_time.IndexOfTime, parsed_time.LengthOfTime, date_time, parsed_time.UtcOffset);
}
else
{
if (!TryParseTime(str, default_format, out parsed_time, parsed_date))
{
var date_time = new DateTime(parsed_date.DateTime.Year, parsed_date.DateTime.Month, parsed_date.DateTime.Day, 0, 0, 0);
parsed_date_time = new ParsedDateTime(parsed_date.IndexOfDate, parsed_date.LengthOfDate, -1, -1, date_time);
}
else
{
var date_time = new DateTime(parsed_date.DateTime.Year, parsed_date.DateTime.Month, parsed_date.DateTime.Day, parsed_time.DateTime.Hour, parsed_time.DateTime.Minute, parsed_time.DateTime.Second);
parsed_date_time = new ParsedDateTime(parsed_date.IndexOfDate, parsed_date.LengthOfDate, parsed_time.IndexOfTime, parsed_time.LengthOfTime, date_time, parsed_time.UtcOffset);
}
}
return(true);
}
/// <summary>
/// Tries to find date and time within the passed string and return it as ParsedDateTime object.
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="defaultFormat">format to be used preferably in ambivalent instances</param>
/// <param name="parsedDateTime">parsed date-time output</param>
/// <returns>true if both date and time were found, else false</returns>
public static bool TryParseDateTime(this string str, DateTimeFormat defaultFormat,
out ParsedDateTime parsedDateTime)
{
if (str.TryParseDateOrTime(defaultFormat, out parsedDateTime) &&
parsedDateTime.IsDateFound &&
parsedDateTime.IsTimeFound
)
{
return(true);
}
parsedDateTime = null;
return(false);
}
/// <summary>
/// Tries to find date and time within the passed string and return it as ParsedDateTime object.
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="default_format">format to be used preferably in ambivalent instances</param>
/// <param name="parsed_date_time">parsed date-time output</param>
/// <returns>true if both date and time were found, else false</returns>
static public bool TryParseDateTime(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_date_time)
{
if (DateTimeRoutines.TryParseDateOrTime(str, default_format, out parsed_date_time) &&
parsed_date_time.IsDateFound &&
parsed_date_time.IsTimeFound
)
{
return(true);
}
parsed_date_time = null;
return(false);
}
/// <summary>
/// Tries to find time within the passed string (relatively to the passed parsed_date if any) and return it as ParsedDateTime object.
/// It recognizes only time while ignoring date, so date in the returned ParsedDateTime is always 1/1/1
/// </summary>
/// <param name="str">string that contains date</param>
/// <param name="default_format">format to be used preferably in ambivalent instances</param>
/// <param name="parsed_time">parsed date-time output</param>
/// <param name="parsed_date">ParsedDateTime object if the date was found within this string, else NULL</param>
/// <returns>true if time was found, else false</returns>
public static bool TryParseTime(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_time, ParsedDateTime parsed_date)
{
parsed_time = null;
string time_zone_r;
if (default_format == DateTimeFormat.USA_DATE)
time_zone_r = @"(?:\s*(?'time_zone'UTC|GMT|CST|EST))?";
else
time_zone_r = @"(?:\s*(?'time_zone'UTC|GMT))?";
Match m;
if (parsed_date != null && parsed_date.IndexOfDate > -1)
{//look around the found date
//look for <date> hh:mm:ss <UTC offset>
m = Regex.Match(str.Substring(parsed_date.IndexOfDate + parsed_date.LengthOfDate), @"(?<=^\s*,?\s+|^\s*at\s*|^\s*[T\-]\s*)(?'hour'\d{2})\s*:\s*(?'minute'\d{2})\s*:\s*(?'second'\d{2})\s+(?'offset_sign'[\+\-])(?'offset_hh'\d{2}):?(?'offset_mm'\d{2})(?=$|[^\d\w])", RegexOptions.Compiled);
if (!m.Success)
//look for <date> [h]h:mm[:ss] [PM/AM] [UTC/GMT]
m = Regex.Match(str.Substring(parsed_date.IndexOfDate + parsed_date.LengthOfDate), @"(?<=^\s*,?\s+|^\s*at\s*|^\s*[T\-]\s*)(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?" + time_zone_r + @"(?=$|[^\d\w])", RegexOptions.Compiled);
if (!m.Success)
//look for [h]h:mm:ss [PM/AM] [UTC/GMT] <date>
m = Regex.Match(str.Substring(0, parsed_date.IndexOfDate), @"(?<=^|[^\d])(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?" + time_zone_r + @"(?=$|[\s,]+)", RegexOptions.Compiled);
if (!m.Success)
//look for [h]h:mm:ss [PM/AM] [UTC/GMT] within <date>
m = Regex.Match(str.Substring(parsed_date.IndexOfDate, parsed_date.LengthOfDate), @"(?<=^|[^\d])(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?" + time_zone_r + @"(?=$|[\s,]+)", RegexOptions.Compiled);
}
else//look anywhere within string
{
//look for hh:mm:ss <UTC offset>
m = Regex.Match(str, @"(?<=^|\s+|\s*T\s*)(?'hour'\d{2})\s*:\s*(?'minute'\d{2})\s*:\s*(?'second'\d{2})\s+(?'offset_sign'[\+\-])(?'offset_hh'\d{2}):?(?'offset_mm'\d{2})?(?=$|[^\d\w])", RegexOptions.Compiled);
if (!m.Success)
//look for [h]h:mm[:ss] [PM/AM] [UTC/GMT]
m = Regex.Match(str, @"(?<=^|\s+|\s*T\s*)(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?" + time_zone_r + @"(?=$|[^\d\w])", RegexOptions.Compiled);
}
if (!m.Success)
return false;
//try
//{
int hour = int.Parse(m.Groups["hour"].Value);
if (hour < 0 || hour > 23)
return false;
int minute = int.Parse(m.Groups["minute"].Value);
if (minute < 0 || minute > 59)
return false;
int second = 0;
if (!string.IsNullOrEmpty(m.Groups["second"].Value))
{
second = int.Parse(m.Groups["second"].Value);
if (second < 0 || second > 59)
return false;
}
if (string.Compare(m.Groups["ampm"].Value, "PM", true) == 0 && hour < 12)
hour += 12;
else if (string.Compare(m.Groups["ampm"].Value, "AM", true) == 0 && hour == 12)
hour -= 12;
DateTime date_time = new DateTime(1, 1, 1, hour, minute, second);
if (m.Groups["offset_hh"].Success)
{
int offset_hh = int.Parse(m.Groups["offset_hh"].Value);
int offset_mm = 0;
if (m.Groups["offset_mm"].Success)
offset_mm = int.Parse(m.Groups["offset_mm"].Value);
TimeSpan utc_offset = new TimeSpan(offset_hh, offset_mm, 0);
if (m.Groups["offset_sign"].Value == "-")
utc_offset = -utc_offset;
parsed_time = new ParsedDateTime(-1, -1, m.Index, m.Length, date_time, utc_offset);
return true;
}
if (m.Groups["time_zone"].Success)
{
TimeSpan utc_offset;
switch (m.Groups["time_zone"].Value)
{
case "UTC":
case "GMT":
utc_offset = new TimeSpan(0, 0, 0);
break;
case "CST":
utc_offset = new TimeSpan(-6, 0, 0);
break;
case "EST":
utc_offset = new TimeSpan(-5, 0, 0);
break;
default:
throw new Exception("Time zone: " + m.Groups["time_zone"].Value + " is not defined.");
}
parsed_time = new ParsedDateTime(-1, -1, m.Index, m.Length, date_time, utc_offset);
return true;
}
parsed_time = new ParsedDateTime(-1, -1, m.Index, m.Length, date_time);
//}
//catch(Exception e)
//{
// return false;
//}
return true;
}
/// <summary>
/// Tries to find time within the passed string and return it as ParsedDateTime object.
/// It recognizes only time while ignoring date, so date in the returned ParsedDateTime is always 1/1/1
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="default_format">format to be used preferably in ambivalent instances</param>
/// <param name="parsed_time">parsed date-time output</param>
/// <returns>true if time was found, else false</returns>
public static bool TryParseTime(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_time)
{
return TryParseTime(str, default_format, out parsed_time, null);
}
/// <summary>
/// Tries to find date and time within the passed string and return it as ParsedDateTime object.
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="default_format">format to be used preferably in ambivalent instances</param>
/// <param name="parsed_date_time">parsed date-time output</param>
/// <returns>true if both date and time were found, else false</returns>
public static bool TryParseDateTime(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_date_time)
{
if (DateTimeRoutines.TryParseDateOrTime(str, default_format, out parsed_date_time)
&& parsed_date_time.IsDateFound
&& parsed_date_time.IsTimeFound
)
return true;
parsed_date_time = null;
return false;
}
/// <summary>
/// Tries to find date and/or time within the passed string and return it as ParsedDateTime object.
/// If only date was found, time in the returned ParsedDateTime is always 0:0:0.
/// If only time was found, date in the returned ParsedDateTime is DefaultDate.
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="default_format">format to be used preferably in ambivalent instances</param>
/// <param name="parsed_date_time">parsed date-time output</param>
/// <returns>true if date or time was found, else false</returns>
public static bool TryParseDateOrTime(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_date_time)
{
parsed_date_time = null;
ParsedDateTime parsed_date;
ParsedDateTime parsed_time;
if (!TryParseDate(str, default_format, out parsed_date))
{
if (!TryParseTime(str, default_format, out parsed_time, null))
return false;
DateTime date_time = new DateTime(DefaultDate.Year, DefaultDate.Month, DefaultDate.Day, parsed_time.DateTime.Hour, parsed_time.DateTime.Minute, parsed_time.DateTime.Second);
parsed_date_time = new ParsedDateTime(-1, -1, parsed_time.IndexOfTime, parsed_time.LengthOfTime, date_time, parsed_time.UtcOffset);
}
else
{
if (!TryParseTime(str, default_format, out parsed_time, parsed_date))
{
DateTime date_time = new DateTime(parsed_date.DateTime.Year, parsed_date.DateTime.Month, parsed_date.DateTime.Day, 0, 0, 0);
parsed_date_time = new ParsedDateTime(parsed_date.IndexOfDate, parsed_date.LengthOfDate, -1, -1, date_time);
}
else
{
DateTime date_time = new DateTime(parsed_date.DateTime.Year, parsed_date.DateTime.Month, parsed_date.DateTime.Day, parsed_time.DateTime.Hour, parsed_time.DateTime.Minute, parsed_time.DateTime.Second);
parsed_date_time = new ParsedDateTime(parsed_date.IndexOfDate, parsed_date.LengthOfDate, parsed_time.IndexOfTime, parsed_time.LengthOfTime, date_time, parsed_time.UtcOffset);
}
}
return true;
}
public static bool TryParseTime(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_time, ParsedDateTime parsed_date)
{
parsed_time = null;
string time_zone_r;
if (default_format == DateTimeFormat.USDate)
{
time_zone_r = @"(?:\s*(?'time_zone'UTC|GMT|CST|EST))?";
}
else
{
time_zone_r = @"(?:\s*(?'time_zone'UTC|GMT))?";
}
Match m;
if (parsed_date != null && parsed_date.IndexOfDate > -1)
{
//look around the found date
//look for <date> hh:mm:ss <UTC offset>
m = Regex.Match(str.Substring(parsed_date.IndexOfDate + parsed_date.LengthOfDate), @"(?<=^\s*,?\s+|^\s*at\s*|^\s*[T\-]\s*)(?'hour'\d{2})\s*:\s*(?'minute'\d{2})\s*:\s*(?'second'\d{2})\s+(?'offset_sign'[\+\-])(?'offset_hh'\d{2}):?(?'offset_mm'\d{2})(?=$|[^\d\w])", RegexOptions.Compiled);
if (!m.Success)
{
//look for <date> [h]h:mm[:ss] [PM/AM] [UTC/GMT]
m = Regex.Match(str.Substring(parsed_date.IndexOfDate + parsed_date.LengthOfDate), @"(?<=^\s*,?\s+|^\s*at\s*|^\s*[T\-]\s*)(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?" + time_zone_r + @"(?=$|[^\d\w])", RegexOptions.Compiled);
}
if (!m.Success)
{
//look for [h]h:mm:ss [PM/AM] [UTC/GMT] <date>
m = Regex.Match(str.Substring(0, parsed_date.IndexOfDate), @"(?<=^|[^\d])(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?" + time_zone_r + @"(?=$|[\s,]+)", RegexOptions.Compiled);
}
if (!m.Success)
{
//look for [h]h:mm:ss [PM/AM] [UTC/GMT] within <date>
m = Regex.Match(str.Substring(parsed_date.IndexOfDate, parsed_date.LengthOfDate), @"(?<=^|[^\d])(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?" + time_zone_r + @"(?=$|[\s,]+)", RegexOptions.Compiled);
}
}
else
{
//look anywhere within string
//look for hh:mm:ss <UTC offset>
m = Regex.Match(str, @"(?<=^|\s+|\s*T\s*)(?'hour'\d{2})\s*:\s*(?'minute'\d{2})\s*:\s*(?'second'\d{2})\s+(?'offset_sign'[\+\-])(?'offset_hh'\d{2}):?(?'offset_mm'\d{2})?(?=$|[^\d\w])", RegexOptions.Compiled);
if (!m.Success)
{
//look for [h]h:mm[:ss] [PM/AM] [UTC/GMT]
m = Regex.Match(str, @"(?<=^|\s+|\s*T\s*)(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?" + time_zone_r + @"(?=$|[^\d\w])", RegexOptions.Compiled);
}
}
if (!m.Success)
{
return(false);
}
//try
//{
var hour = int.Parse(m.Groups["hour"].Value);
if (hour < 0 || hour > 23)
{
return(false);
}
var minute = int.Parse(m.Groups["minute"].Value);
if (minute < 0 || minute > 59)
{
return(false);
}
var second = 0;
if (!string.IsNullOrEmpty(m.Groups["second"].Value))
{
second = int.Parse(m.Groups["second"].Value);
if (second < 0 || second > 59)
{
return(false);
}
}
if (string.Compare(m.Groups["ampm"].Value, "PM", true) == 0 && hour < 12)
{
hour += 12;
}
else if (string.Compare(m.Groups["ampm"].Value, "AM", true) == 0 && hour == 12)
{
hour -= 12;
}
var date_time = new DateTime(1, 1, 1, hour, minute, second);
if (m.Groups["offset_hh"].Success)
{
var offset_hh = int.Parse(m.Groups["offset_hh"].Value);
var offset_mm = 0;
if (m.Groups["offset_mm"].Success)
{
offset_mm = int.Parse(m.Groups["offset_mm"].Value);
}
var utc_offset = new TimeSpan(offset_hh, offset_mm, 0);
if (m.Groups["offset_sign"].Value == "-")
{
utc_offset = -utc_offset;
}
parsed_time = new ParsedDateTime(-1, -1, m.Index, m.Length, date_time, utc_offset);
return(true);
}
if (m.Groups["time_zone"].Success)
{
TimeSpan utc_offset;
switch (m.Groups["time_zone"].Value)
{
case "UTC":
case "GMT":
utc_offset = new TimeSpan(0, 0, 0);
break;
case "CST":
utc_offset = new TimeSpan(-6, 0, 0);
break;
case "EST":
utc_offset = new TimeSpan(-5, 0, 0);
break;
default:
throw new Exception("Time zone: " + m.Groups["time_zone"].Value + " is not defined.");
}
parsed_time = new ParsedDateTime(-1, -1, m.Index, m.Length, date_time, utc_offset);
return(true);
}
parsed_time = new ParsedDateTime(-1, -1, m.Index, m.Length, date_time);
return(true);
}
/// <summary>
/// Tries to find date and time within the passed string and return it as ParsedDateTime object.
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="default_format">format that must be used preferably in ambivalent instances</param>
/// <param name="parsed_date_time">parsed date-time output</param>
/// <returns>true if both date and time were found, else false</returns>
public static bool TryParseDateTime(string str, DateTimeFormat default_format, out ParsedDateTime parsed_date_time)
{
lock (lock_variable)
{
if (DateTimeHelper.TryParse(str, DateTimeHelper.DateTimeFormat.USA_DATE, out parsed_date_time)
&& parsed_date_time.IsDateFound
&& parsed_date_time.IsTimeFound
)
return true;
parsed_date_time = null;
return false;
}
}
/// <summary>
/// Tries to find time within the passed string and return it as ParsedDateTime object.
/// It recognizes only time while ignoring date, so date in the returned ParsedDateTime is always 1/1/1
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="defaultFormat">format to be used preferably in ambivalent instances</param>
/// <param name="parsedTime">parsed date-time output</param>
/// <returns>true if time was found, else false</returns>
public static bool TryParseTime(this string str, DateTimeFormat defaultFormat, out ParsedDateTime parsedTime)
{
return(TryParseTime(str, defaultFormat, out parsedTime, null));
}
/// <summary> /// Tries to find time within the passed string and return it as ParsedDateTime object. /// It recognizes only time while ignoring date, so date in the returned ParsedDateTime is always 1/1/1 /// </summary> /// <param name="str">string that contains date-time</param> /// <param name="default_format">format to be used preferably in ambivalent instances</param> /// <param name="parsed_time">parsed date-time output</param> /// <returns>true if time was found, else false</returns> public static bool TryParseTime(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_time) => TryParseTime(str, default_format, out parsed_time, null);
/// <summary>
/// Tries to find date within the passed string and return it as ParsedDateTime object.
/// It recognizes only date while ignoring time, so time in the returned ParsedDateTime is always 0:0:0.
/// If year of the date was not found then it accepts the current year.
/// </summary>
/// <param name="str">string that contains date</param>
/// <param name="default_format">format that must be used preferably in ambivalent instances</param>
/// <param name="parsed_date">parsed date output</param>
/// <returns>true if date was found, else false</returns>
static public bool TryParseDate(string str, DateTimeFormat default_format, out ParsedDateTime parsed_date)
{
lock (lock_variable)
{
parsed_date = null;
if (string.IsNullOrEmpty(str))
{
return(false);
}
//look for dd/mm/yy
Match m = Regex.Match(str, @"(?<=^|[^\d])(?'day'\d{1,2})\s*(?'separator'[\\/\.])+\s*(?'month'\d{1,2})\s*\'separator'+\s*(?'year'\d{2,4})(?=$|[^\d])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (m.Success && m.Groups["year"].Value.Length != 3)
{
System.DateTime date;
if ((default_format ^ DateTimeFormat.USA_DATE) == DateTimeFormat.USA_DATE)
{
if (!convert_to_date(int.Parse(m.Groups["year"].Value), int.Parse(m.Groups["day"].Value), int.Parse(m.Groups["month"].Value), out date))
{
return(false);
}
}
else
{
if (!convert_to_date(int.Parse(m.Groups["year"].Value), int.Parse(m.Groups["month"].Value), int.Parse(m.Groups["day"].Value), out date))
{
return(false);
}
}
parsed_date = new ParsedDateTime(m.Index, m.Length, -1, -1, date);
return(true);
}
//look for yy-mm-dd
m = Regex.Match(str, @"(?<=^|[^\d])(?'year'\d{2,4})\s*(?'separator'[\-])\s*(?'month'\d{1,2})\s*\'separator'+\s*(?'day'\d{1,2})(?=$|[^\d])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (m.Success && m.Groups["year"].Value.Length != 3)
{
System.DateTime date;
if (!convert_to_date(int.Parse(m.Groups["year"].Value), int.Parse(m.Groups["month"].Value), int.Parse(m.Groups["day"].Value), out date))
{
return(false);
}
parsed_date = new ParsedDateTime(m.Index, m.Length, -1, -1, date);
return(true);
}
//look for month dd yyyy
m = Regex.Match(str, @"(?:^|[^\d\w])(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})(?:-?st|-?th)?\s*,?\s*(?'year'\d{4})(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (!m.Success)
{
//look for dd month [yy]yy
m = Regex.Match(str, @"(?:^|[^\d\w:])(?'day'\d{1,2})(?:-?st|-?th)?\s+(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*(?:\s*,?\s*(?:'?(?'year'\d{2})|(?'year'\d{4})))?(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
}
if (!m.Success)
{
//look for yyyy month dd
m = Regex.Match(str, @"(?:^|[^\d\w])(?'year'\d{4})\s+(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})(?:-?st|-?th)?(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
}
if (!m.Success)
{
//look for month dd [yyyy]
m = Regex.Match(str, @"(?:^|[^\d\w])(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})(?:-?st|-?th)?(?:\s*,?\s*(?'year'\d{4}))?(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
}
if (m.Success)
{
int month = -1;
int index_of_date = m.Index;
int length_of_date = m.Length;
switch (m.Groups["month"].Value)
{
case "Jan":
month = 1;
break;
case "Feb":
month = 2;
break;
case "Mar":
month = 3;
break;
case "Apr":
month = 4;
break;
case "May":
month = 5;
break;
case "Jun":
month = 6;
break;
case "Jul":
month = 7;
break;
case "Aug":
month = 8;
break;
case "Sep":
month = 9;
break;
case "Oct":
month = 10;
break;
case "Nov":
month = 11;
break;
case "Dec":
month = 12;
break;
}
int year;
if (!string.IsNullOrEmpty(m.Groups["year"].Value))
{
year = int.Parse(m.Groups["year"].Value);
}
else
{
year = DefaultDate.Year;
}
System.DateTime date;
if (!convert_to_date(year, month, int.Parse(m.Groups["day"].Value), out date))
{
return(false);
}
parsed_date = new ParsedDateTime(index_of_date, length_of_date, -1, -1, date);
return(true);
}
return(false);
}
}
public static bool TryParseTime(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_time, ParsedDateTime parsed_date)
{
parsed_time = null;
Match m;
if (parsed_date != null && parsed_date.IndexOfDate > -1)
{//look around the found date
//look for <date> [h]h:mm[:ss] [PM/AM]
m = Regex.Match(str.Substring(parsed_date.IndexOfDate + parsed_date.LengthOfDate), @"(?<=^\s*,?\s+|^\s*at\s*|^\s*[T\-]\s*)(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?(?=$|[^\d\w])", RegexOptions.Compiled);
if (!m.Success)
{
//look for [h]h:mm:ss <date>
m = Regex.Match(str.Substring(0, parsed_date.IndexOfDate), @"(?<=^|[^\d])(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?(?=$|[\s,]+)", RegexOptions.Compiled);
}
}
else//look anywere within string
//look for [h]h:mm[:ss] [PM/AM]
{
m = Regex.Match(str, @"(?<=^|\s+|\s*T\s*)(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*(?'ampm'AM|am|PM|pm))?(?=$|[^\d\w])", RegexOptions.Compiled);
}
if (m.Success)
{
try
{
var hour = int.Parse(m.Groups["hour"].Value);
if (hour < 0 || hour > 23)
{
return(false);
}
var minute = int.Parse(m.Groups["minute"].Value);
if (minute < 0 || minute > 59)
{
return(false);
}
var second = 0;
if (!string.IsNullOrEmpty(m.Groups["second"].Value))
{
second = int.Parse(m.Groups["second"].Value);
if (second < 0 || second > 59)
{
return(false);
}
}
if (string.Compare(m.Groups["ampm"].Value, "PM", true) == 0 && hour < 12)
{
hour += 12;
}
else if (string.Compare(m.Groups["ampm"].Value, "AM", true) == 0 && hour == 12)
{
hour -= 12;
}
var date_time = new DateTime(1, 1, 1, hour, minute, second);
parsed_time = new ParsedDateTime(-1, -1, m.Index, m.Length, date_time);
}
catch
{
return(false);
}
return(true);
}
return(false);
}
/// <summary>
/// Tries to find time within the passed string (relatively to the passed parsed_date if any) and return it as ParsedDateTime object.
/// It recognizes only time while ignoring date, so date in the returned ParsedDateTime is always 1/1/1
/// </summary>
/// <param name="str">string that contains date</param>
/// <param name="default_format">format that must be used preferably in ambivalent instances</param>
/// <param name="parsed_time">parsed date-time output</param>
/// <param name="parsed_date">ParsedDateTime object if the date was found within this string, else NULL</param>
/// <returns>true if time was found, else false</returns>
public static bool TryParseTime(string str, DateTimeFormat default_format, out ParsedDateTime parsed_time, ParsedDateTime parsed_date)
{
lock (lock_variable)
{
parsed_time = null;
Match m;
if (parsed_date != null && parsed_date.IndexOfDate > -1)
{//look around the found date
//look for <date> [h]h:mm[:ss] [PM/AM]
m = Regex.Match(str.Substring(parsed_date.IndexOfDate + parsed_date.LengthOfDate), @"(?<=^\s*,?\s+|^\s*at\s*|^\s*[T\-]\s*)(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*([AP]M))?(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (!m.Success)
//look for [h]h:mm:ss <date>
m = Regex.Match(str.Substring(0, parsed_date.IndexOfDate), @"(?<=^|[^\d])(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*([AP]M))?(?=$|[\s,]+)", RegexOptions.Compiled | RegexOptions.IgnoreCase);
}
else//look anywere within string
//look for [h]h:mm[:ss] [PM/AM]
m = Regex.Match(str, @"(?<=^|\s+|\s*T\s*)(?'hour'\d{1,2})\s*:\s*(?'minute'\d{2})\s*(?::\s*(?'second'\d{2}))?(?:\s*([AP]M))?(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (m.Success)
{
try
{
int hour = int.Parse(m.Groups["hour"].Value);
if (hour < 0 || hour > 23)
return false;
int minute = int.Parse(m.Groups["minute"].Value);
if (minute < 0 || minute > 59)
return false;
int second = 0;
if (!string.IsNullOrEmpty(m.Groups["second"].Value))
{
second = int.Parse(m.Groups["second"].Value);
if (second < 0 || second > 59)
return false;
}
if (string.Compare(m.Groups[4].Value, "PM", true) > -1)
hour += 12;
System.DateTime date_time = new System.DateTime(1, 1, 1, hour, minute, second);
parsed_time = new ParsedDateTime(-1, -1, m.Index, m.Length, date_time);
}
catch
{
return false;
}
return true;
}
return false;
}
}
/// <summary>
/// Tries to find date within the passed string and return it as ParsedDateTime object.
/// It recognizes only date while ignoring time, so time in the returned ParsedDateTime is always 0:0:0.
/// If year of the date was not found then it accepts the current year.
/// </summary>
/// <param name="str">string that contains date</param>
/// <param name="default_format">format to be used preferably in ambivalent instances</param>
/// <param name="parsed_date">parsed date output</param>
/// <returns>true if date was found, else false</returns>
public static bool TryParseDate(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_date)
{
parsed_date = null;
if (string.IsNullOrEmpty(str))
return false;
//look for dd/mm/yy
Match m = Regex.Match(str, @"(?<=^|[^\d])(?'day'\d{1,2})\s*(?'separator'[\\/\.])+\s*(?'month'\d{1,2})\s*\'separator'+\s*(?'year'\d{2}|\d{4})(?=$|[^\d])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (m.Success)
{
DateTime date;
if ((default_format ^ DateTimeFormat.USA_DATE) == DateTimeFormat.USA_DATE)
{
if (!convert_to_date(int.Parse(m.Groups["year"].Value), int.Parse(m.Groups["day"].Value), int.Parse(m.Groups["month"].Value), out date))
return false;
}
else
{
if (!convert_to_date(int.Parse(m.Groups["year"].Value), int.Parse(m.Groups["month"].Value), int.Parse(m.Groups["day"].Value), out date))
return false;
}
parsed_date = new ParsedDateTime(m.Index, m.Length, -1, -1, date);
return true;
}
//look for [yy]yy-mm-dd
m = Regex.Match(str, @"(?<=^|[^\d])(?'year'\d{2}|\d{4})\s*(?'separator'[\-])\s*(?'month'\d{1,2})\s*\'separator'+\s*(?'day'\d{1,2})(?=$|[^\d])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (m.Success)
{
DateTime date;
if (!convert_to_date(int.Parse(m.Groups["year"].Value), int.Parse(m.Groups["month"].Value), int.Parse(m.Groups["day"].Value), out date))
return false;
parsed_date = new ParsedDateTime(m.Index, m.Length, -1, -1, date);
return true;
}
//look for month dd yyyy
m = Regex.Match(str, @"(?:^|[^\d\w])(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})(?:-?st|-?th|-?rd|-?nd)?\s*,?\s*(?'year'\d{4})(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (!m.Success)
//look for dd month [yy]yy
m = Regex.Match(str, @"(?:^|[^\d\w:])(?'day'\d{1,2})(?:-?st\s+|-?th\s+|-?rd\s+|-?nd\s+|-|\s+)(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*(?:\s*,?\s*|-)'?(?'year'\d{2}|\d{4})(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (!m.Success)
//look for yyyy month dd
m = Regex.Match(str, @"(?:^|[^\d\w])(?'year'\d{4})\s+(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})(?:-?st|-?th|-?rd|-?nd)?(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (!m.Success)
//look for month dd hh:mm:ss MDT|UTC yyyy
m = Regex.Match(str, @"(?:^|[^\d\w])(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})\s+\d{2}\:\d{2}\:\d{2}\s+(?:MDT|UTC)\s+(?'year'\d{4})(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (!m.Success)
//look for month dd [yyyy]
m = Regex.Match(str, @"(?:^|[^\d\w])(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})(?:-?st|-?th|-?rd|-?nd)?(?:\s*,?\s*(?'year'\d{4}))?(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (m.Success)
{
int month = -1;
int index_of_date = m.Index;
int length_of_date = m.Length;
switch (m.Groups["month"].Value)
{
case "Jan":
case "JAN":
month = 1;
break;
case "Feb":
case "FEB":
month = 2;
break;
case "Mar":
case "MAR":
month = 3;
break;
case "Apr":
case "APR":
month = 4;
break;
case "May":
case "MAY":
month = 5;
break;
case "Jun":
case "JUN":
month = 6;
break;
case "Jul":
month = 7;
break;
case "Aug":
case "AUG":
month = 8;
break;
case "Sep":
case "SEP":
month = 9;
break;
case "Oct":
case "OCT":
month = 10;
break;
case "Nov":
case "NOV":
month = 11;
break;
case "Dec":
case "DEC":
month = 12;
break;
}
int year;
if (!string.IsNullOrEmpty(m.Groups["year"].Value))
year = int.Parse(m.Groups["year"].Value);
else
year = DefaultDate.Year;
DateTime date;
if (!convert_to_date(year, month, int.Parse(m.Groups["day"].Value), out date))
return false;
parsed_date = new ParsedDateTime(index_of_date, length_of_date, -1, -1, date);
return true;
}
return false;
}
public static bool TryParseDate(this string str, DateTimeFormat default_format, out ParsedDateTime parsed_date)
{
parsed_date = null;
if (string.IsNullOrEmpty(str))
{
return(false);
}
//look for dd/mm/yy
var m = Regex.Match(str, @"(?<=^|[^\d])(?'day'\d{1,2})\s*(?'separator'[\\/\.])+\s*(?'month'\d{1,2})\s*\'separator'+\s*(?'year'\d{2}|\d{4})(?=$|[^\d])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (m.Success)
{
DateTime date;
if ((default_format ^ DateTimeFormat.USDate) == DateTimeFormat.USDate)
{
if (!ConvertToDate(int.Parse(m.Groups["year"].Value), int.Parse(m.Groups["day"].Value), int.Parse(m.Groups["month"].Value), out date))
{
return(false);
}
}
else
{
if (!ConvertToDate(int.Parse(m.Groups["year"].Value), int.Parse(m.Groups["month"].Value), int.Parse(m.Groups["day"].Value), out date))
{
return(false);
}
}
parsed_date = new ParsedDateTime(m.Index, m.Length, -1, -1, date);
return(true);
}
//look for [yy]yy-mm-dd
m = Regex.Match(str, @"(?<=^|[^\d])(?'year'\d{2}|\d{4})\s*(?'separator'[\-])\s*(?'month'\d{1,2})\s*\'separator'+\s*(?'day'\d{1,2})(?=$|[^\d])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (m.Success)
{
DateTime date;
if (!ConvertToDate(int.Parse(m.Groups["year"].Value), int.Parse(m.Groups["month"].Value), int.Parse(m.Groups["day"].Value), out date))
{
return(false);
}
parsed_date = new ParsedDateTime(m.Index, m.Length, -1, -1, date);
return(true);
}
//look for month dd yyyy
m = Regex.Match(str, @"(?:^|[^\d\w])(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})(?:-?st|-?th|-?rd|-?nd)?\s*,?\s*(?'year'\d{4})(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (!m.Success)
{
//look for dd month [yy]yy
m = Regex.Match(str, @"(?:^|[^\d\w:])(?'day'\d{1,2})(?:-?st\s+|-?th\s+|-?rd\s+|-?nd\s+|-|\s+)(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*(?:\s*,?\s*|-)'?(?'year'\d{2}|\d{4})(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
}
if (!m.Success)
{
//look for yyyy month dd
m = Regex.Match(str, @"(?:^|[^\d\w])(?'year'\d{4})\s+(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})(?:-?st|-?th|-?rd|-?nd)?(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
}
if (!m.Success)
{
//look for month dd hh:mm:ss MDT|UTC yyyy
m = Regex.Match(str, @"(?:^|[^\d\w])(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})\s+\d{2}\:\d{2}\:\d{2}\s+(?:MDT|UTC)\s+(?'year'\d{4})(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
}
if (!m.Success)
{
//look for month dd [yyyy]
m = Regex.Match(str, @"(?:^|[^\d\w])(?'month'Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[uarychilestmbro]*\s+(?'day'\d{1,2})(?:-?st|-?th|-?rd|-?nd)?(?:\s*,?\s*(?'year'\d{4}))?(?=$|[^\d\w])", RegexOptions.Compiled | RegexOptions.IgnoreCase);
}
if (m.Success)
{
var month = -1;
var index_of_date = m.Index;
var length_of_date = m.Length;
switch (m.Groups["month"].Value)
{
case "Jan":
case "JAN":
month = 1;
break;
case "Feb":
case "FEB":
month = 2;
break;
case "Mar":
case "MAR":
month = 3;
break;
case "Apr":
case "APR":
month = 4;
break;
case "May":
case "MAY":
month = 5;
break;
case "Jun":
case "JUN":
month = 6;
break;
case "Jul":
month = 7;
break;
case "Aug":
case "AUG":
month = 8;
break;
case "Sep":
case "SEP":
month = 9;
break;
case "Oct":
case "OCT":
month = 10;
break;
case "Nov":
case "NOV":
month = 11;
break;
case "Dec":
case "DEC":
month = 12;
break;
}
int year;
if (!string.IsNullOrEmpty(m.Groups["year"].Value))
{
year = int.Parse(m.Groups["year"].Value);
}
else
{
year = DefaultDate.Year;
}
DateTime date;
if (!ConvertToDate(year, month, int.Parse(m.Groups["day"].Value), out date))
{
return(false);
}
parsed_date = new ParsedDateTime(index_of_date, length_of_date, -1, -1, date);
return(true);
}
return(false);
}
/// <summary>
/// Tries to find date and time within the passed string and return it as ParsedDateTime object.
/// </summary>
/// <param name="str">string that contains date-time</param>
/// <param name="default_format">format that must be used preferably in ambivalent instances</param>
/// <param name="parsed_date_time">parsed date-time output</param>
/// <returns>true if both date and time were found, else false</returns>
static public bool TryParseDateTime(string str, DateTimeFormat default_format, out ParsedDateTime parsed_date_time)
{
lock (lock_variable)
{
if (DateTimeHelper.TryParse(str, DateTimeHelper.DateTimeFormat.USA_DATE, out parsed_date_time) &&
parsed_date_time.IsDateFound &&
parsed_date_time.IsTimeFound
)
{
return(true);
}
parsed_date_time = null;
return(false);
}
}
