NAME

    DP::Date - Date manipulation support

SYNOPSIS

      use DP::Date;
  
      ...
      ...
  
DESCRIPTION

  METHODS

    new
         $DateObject = DP::Date->new( [ $Date_asString ] )

         index of $DateObject [ blessed array ]
         0 - date as string
         1 - date as time() - secs since epoch
         2 - weekday from local time
         3 - yearday from local time

    asString
         $Date_asString = $DateObject->asString( [ $SetDate_asString ] )
 
        Get/Set string-of-numbers formatted value date-time value of
        $DateObject to $SetDate_asString.

         $Date_asString is string of date numbers without any punctuation,
        thus having the date-time '2003-12-24 20:00:00' produces date
        asString '20031224200000'

    asTime
         $Date_asTime = $DateObject->asTime( [ $setDate_asTime | time ] )
 
        Get/Set date-time value of $DateObject to $setDate_asTime.

         $Date_asTime is compatible with perl's time(), ( eg. seconds
        elapsed since 1.1.1970? )

    asISO
         $Date_asISO = $DateObject->asISO( [ $setDate_asISO ] )
 
        Get/Set ISO formatted date-time value of $DateObject to
        $setDate_asTime.

         $Date_asISO example: 2003-12-24 20:00:00 ( no timezone, no 'T'
        letter as sometimes used 2003-12-24T20:00:00 )

         # MUST be EXACTLY this format: 2002-12-24 12:34:56 (YYYY-MM-DD hh:mm:ss)
         # no checking, 2b faster
 
    GetAsISO
         $Date_asISO = $DateObject->GetAsISO()
 
        Get ISO formatted value of $DateObject to $setDate_asTime. See also
        asISO() method.

    GetAsArray
         @Date_array = $DateObject->GetAsISO()
 
        Get array of values of $DateObject to $setDate_asTime, where
        @Date_array = ( $YYYY, $MM, $DD, $hh, $mm, $ss ) See also asISO()
        method.

    SetStringAtOffset
         $Date_asString = $DateObject->SetStringAtOffset( $offset, $newStringValue )
 
        Example: want to change hour value of $DateObject

         my $DateObject = DP::Date->new();
         $DateObject->SetStringAtOffset( 8, '20' );   # initial date: 2003-12-24 12:34:56
         $Date_asISO = $DateObject->GetAsISO();       # changed hour: 2003-12-24 20:34:56
 
        Offsets: year...... 0 +4 month..... 4 +2 day....... 6 +2 hour......
        8 +2 min....... 10 +2 sec....... 12 +2

    Year
        Get/Set

         $DateObject->Year( [ $YYYY ] )

    Month
        Get/Set

         $MonthNr = $DateObject->Month( [ $Month_name_as_english_3letters_abbr ] )

    MonthNr
        Get/Set

         $MonthNr = $DateObject->MonthNr( [ $Month_as_two_digits_based_JAN_eq_01 ] )

    Day Get/Set

         $Day = $DateObject->Day( [ $Day_of_month_as_two_digits ] )

    Hour
        Get/Set

         $Hour = $DateObject->Hour( [ $Hour_as_two_digits ] )

    Minute
        Get/Set

         $Minute = $DateObject->Minute( [ $Minute_as_two_digits ] )

    Second
        Get/Set

         $Second = $DateObject->Second( [ $Second_as_two_digits ] )

    GetWeekDay
        Get

         $GetWeekDay = $DateObject->GetWeekDay

    GetYearDay
        Get

         $GetYearDay = $DateObject->GetYearDay

    str2time
        see source code, sorry

    cmpString
        see source code, sorry

    isSameDateAs
        Compare $DateObject with $anotherDateObject

         $bool = $DateObject->isSameDateAs( $anotherDateObject [, $comparingSize ] )
 
         $comparingSize is length of compared date-string .

        see also asString and cmpString methods.

    GetYearMonthBeginTime
        Get the time-value at which the specified month of the year begins.
        Very usefull! Values are cached as speed improvement.

         $time_value = $DateObject->GetYearMonthBeginTime( $YYYY_or_YY_string, $MM_string )
 
        see also asTime method.

EXPORT

        nothing

FILES

        none

REVISION

        project started: 2002/06/04

        $Id: Date.pm_rev 1.6 2003/12/12 11:00:15 root Exp root $

AUTHOR

         Daniel Peder
         <Daniel.Peder@InfoSet.COM>
         http://www.infoset.com
         Czech Republic national-flag: 
         LeftSideBlueTriangleRightSideHorizontalSplitTopWhiteBottomRed

SEE ALSO

        other date time modules at CPAN, http://www.CPAN.org