[36] | 1 | ' Classes/System/DateTime.ab
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| 2 |
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| 3 | #ifndef __SYSTEM_DATETIME_AB__
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| 4 | #define __SYSTEM_DATETIME_AB__
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| 5 |
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| 6 |
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| 7 | Class DateTime
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| 8 | m_Date As Int64
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| 9 | Public
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[39] | 10 | Static MaxValue = 3162240000000000000 As Int64 'Const
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| 11 | Static MinValue = 316224000000000 As Int64 'Const
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[36] | 12 |
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| 13 | Sub DateTime(ticks As Int64)
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| 14 | Ticks = ticks
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[81] | 15 | Kind = Unspecified
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[36] | 16 | End Sub
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| 17 |
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| 18 | Sub DateTime(ticks As Int64, kind As DateTimeKind)
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| 19 | DateTime(ticks)
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| 20 | Kind = kind
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| 21 | End Sub
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| 22 |
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| 23 | Sub DateTime(year As Long, month As Long, day As Long)
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| 24 | If year < 1 Or year > 9999 Or month < 1 Or month > 12 Or day < 1 Or day > DaysInMonth(year, month) Then
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| 25 | 'ArgumentOutOfRangeException
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| 26 | debug
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| 27 | End If
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| 28 | DateTime(316224000000000)
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| 29 | AddYears(year - 1)
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| 30 |
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| 31 | Dim days As Long
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| 32 | Dim i As Long
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| 33 | For i = 1 To month - 1
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| 34 | days += DaysInMonth(Year, i)
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| 35 | Next
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| 36 | days += day
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| 37 | AddDays(days - 1)
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| 38 | End Sub
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| 39 |
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| 40 | Sub DateTime(year As Long, month As Long, day As Long, kind As DateTimeKind)
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| 41 | DateTime(year, month, day)
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| 42 | Kind = kind
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| 43 | End Sub
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| 44 |
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| 45 | Sub DateTime(year As Long, month As Long, day As Long, hour As Long, minute As Long, second As Long)
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| 46 | If hour < 0 Or hour > 23 Or minute < 0 Or minute > 59 Or second < 0 Or second > 59 Then
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| 47 | 'ArgumentOutOfRangeException
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| 48 | debug
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| 49 | End If
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| 50 | DateTime(year, month, day)
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| 51 | AddHours(hour)
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| 52 | AddMinutes(minute)
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| 53 | AddSeconds(second)
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| 54 | End Sub
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| 55 |
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[81] | 56 | /* Sub DateTime(year As Long, month As Long, day As Long, hour As Long, minute As Long, second As Long, kind As DateTimeKind)
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[36] | 57 | DateTime(year, month, day, hour, minute, second)
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| 58 | Kind = kind
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[81] | 59 | End Sub*/
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[36] | 60 |
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| 61 | Sub DateTime(year As Long, month As Long, day As Long, hour As Long, minute As Long, second As Long, millisecond As Long)
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| 62 | DateTime(year, month, day, hour, minute, second)
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| 63 | AddMilliseconds(millisecond)
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| 64 | End Sub
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| 65 |
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| 66 | Sub DateTime(year As Long, month As Long, day As Long, hour As Long, minute As Long, second As Long, millisecond As Long, kind As DateTimeKind)
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| 67 | DateTime(year, month, day, hour, minute, second, millisecond)
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| 68 | Kind = kind
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| 69 | End Sub
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| 70 |
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| 71 | Sub DateTime(ByRef time As SYSTEMTIME)
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| 72 | DateTime(time.wYear, time.wMonth, time.wDay, time.wHour, time.wMinute, time.wSecond, time.wMilliseconds)
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| 73 | End Sub
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| 74 |
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| 75 | Sub DateTime(ByRef time As SYSTEMTIME, kind As DateTimeKind)
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| 76 | DateTime(time.wYear, time.wMonth, time.wDay, time.wHour, time.wMinute, time.wSecond, time.wMilliseconds, kind)
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| 77 | End Sub
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| 78 |
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[40] | 79 | 'Copy Constructor
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| 80 | Sub DateTime( ByRef datetime As DateTime )
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| 81 | This.m_Date = datetime.m_Date
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| 82 | End Sub
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| 83 |
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[36] | 84 | Sub ~DateTime()
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| 85 | End Sub
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| 86 |
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[93] | 87 | Function Operator == (ByRef value As DateTime) As Boolean
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[36] | 88 | Return Equals(value)
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| 89 | End Function
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| 90 |
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[93] | 91 | Function Operator <> (ByRef value As DateTime) As Boolean
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[36] | 92 | Return Not Equals(value)
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| 93 | End Function
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| 94 |
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[93] | 95 | Function Operator > (ByRef value As DateTime) As Boolean
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[36] | 96 | If DateTime.Compare(This, value) > 0 Then
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[93] | 97 | Return True
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[36] | 98 | Else
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[93] | 99 | Return False
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[36] | 100 | End If
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| 101 | End Function
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| 102 |
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[93] | 103 | Function Operator < (ByRef value As DateTime) As Boolean
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[36] | 104 | If DateTime.Compare(This, value) < 0 Then
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[93] | 105 | Return True
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[36] | 106 | Else
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[93] | 107 | Return False
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[36] | 108 | End If
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| 109 | End Function
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| 110 |
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[93] | 111 | Function Operator >= (ByRef value As DateTime) As Boolean
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[36] | 112 | If DateTime.Compare(This, value) => 0 Then
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[93] | 113 | Return True
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[36] | 114 | Else
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[93] | 115 | Return False
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[36] | 116 | End If
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| 117 | End Function
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| 118 |
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[93] | 119 | Function Operator <= (ByRef value As DateTime) As Boolean
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[36] | 120 | If DateTime.Compare(This, value) <= 0 Then
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[93] | 121 | Return True
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[36] | 122 | Else
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[93] | 123 | Return False
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[36] | 124 | End If
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| 125 | End Function
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| 126 |
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| 127 | 'Property
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| 128 | Function Ticks() As Int64
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| 129 | Return (m_Date And &H3FFFFFFFFFFFFFFF)
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| 130 | End Function
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| 131 |
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| 132 | Function Millisecond() As Long
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| 133 | Return (Ticks \ 10000 Mod 1000) As Long
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| 134 | End Function
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| 135 |
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| 136 | Function Second() As Long
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| 137 | Return (Ticks \ 10000000 Mod 60) As Long
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| 138 | End Function
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| 139 |
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| 140 | Function Minute() As Long
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| 141 | Return (Ticks \ 600000000 Mod 60) As Long
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| 142 | End Function
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| 143 |
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| 144 | Function Hour() As Long
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| 145 | Return (Ticks \ 36000000000 Mod 24) As Long
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| 146 | End Function
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| 147 |
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| 148 | Function Day() As Long
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| 149 | Dim day As Long
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| 150 | day = DayOfYear
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| 151 |
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| 152 | Dim i As Long
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| 153 | For i = 1 To Month - 1
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| 154 | day -= DaysInMonth(Year, i)
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| 155 | Next
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| 156 | Return day
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| 157 | End Function
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| 158 |
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| 159 | Function Month() As Long
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| 160 | Dim year As Long
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| 161 | Dim day As Long
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| 162 | year = Year
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| 163 | day = DayOfYear
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| 164 |
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| 165 | Dim i As Long
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| 166 | For i = 1 To 12
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| 167 | day -= DaysInMonth(year, i)
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[81] | 168 | If day <= 0 Then Return i
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[36] | 169 | Next
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| 170 | Return 12
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| 171 | End Function
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| 172 |
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| 173 | Function Year() As Long
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| 174 | Dim day As Long
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| 175 | day = totalDays()
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| 176 | Return Int((day + day \ 36523 - day \ 146097) / 365.25)
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| 177 | End Function
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| 178 |
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[81] | 179 | Function DayOfWeek() As DayOfWeek
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[36] | 180 | Return totalDays() Mod 7 - 1
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| 181 | End Function
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| 182 |
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[81] | 183 | Function Kind() As DateTimeKind
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[36] | 184 | Return kindFromBinary(m_Date)
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| 185 | End Function
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| 186 |
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| 187 | Function DayOfYear() As Long
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| 188 | Dim day As Long
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| 189 | day = totalDays()
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| 190 | Return day - Int(Year * 365.25 - day \ 36523 + day \ 146097)
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| 191 | End Function
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| 192 |
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| 193 | Function Date() As DateTime
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| 194 | Dim date As DateTime(Year, Month, Day, Kind)
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| 195 | Return date
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| 196 | End Function
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| 197 |
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| 198 | Static Function Now() As DateTime
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| 199 | Dim time As SYSTEMTIME
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| 200 | GetLocalTime(time)
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[81] | 201 | Dim date As DateTime(time, Local)
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[36] | 202 | Return date
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| 203 | End Function
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| 204 |
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| 205 | Static Function ToDay() As DateTime
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| 206 | Dim time As SYSTEMTIME
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| 207 | GetLocalTime(time)
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[81] | 208 | Dim date As DateTime(time.wYear, time.wMonth, time.wDay, Local)
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[36] | 209 | Return date
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| 210 | End Function
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| 211 |
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| 212 | Static Function UtcNow() As DateTime
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| 213 | Dim time As SYSTEMTIME
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| 214 | GetSystemTime(time)
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[81] | 215 | Dim date As DateTime(time, Utc)
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[36] | 216 | Return date
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| 217 | End Function
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| 218 |
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| 219 | 'method
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| 220 | Static Function Compare(ByRef t1 As DateTime, ByRef t2 As DateTime) As Int64
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| 221 | Return t1.Ticks - t2.Ticks
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| 222 | End Function
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| 223 |
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[93] | 224 | Function Equals(ByRef value As DateTime) As Boolean
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[36] | 225 | If value.m_Date = m_Date Then
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[93] | 226 | Return True
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[36] | 227 | Else
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[93] | 228 | Return False
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[36] | 229 | End If
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| 230 | End Function
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| 231 |
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[93] | 232 | Static Function Equals(ByRef t1 As DateTime, ByRef t2 As DateTime) As Boolean
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[36] | 233 | If t1.m_Date = t2.m_Date Then
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[93] | 234 | Return True
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[36] | 235 | Else
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[93] | 236 | Return False
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[36] | 237 | End If
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| 238 | End Function
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| 239 |
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| 240 | Sub AddTicks(value As Int64)
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| 241 | Dim ticks As Int64
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| 242 | ticks = Ticks
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| 243 | If (ticks > DateTime.MaxValue - value) Or (ticks < DateTime.MinValue - value) Then
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| 244 | 'ArgumentOutOfRangeException
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| 245 | debug
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| 246 | End If
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| 247 | Ticks = ticks + value
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| 248 | End Sub
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| 249 |
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| 250 | Sub AddMilliseconds(value As Double)
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| 251 | AddTicks((value * 10000) As Int64)
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| 252 | End Sub
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| 253 |
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| 254 | Sub AddSeconds(value As Double)
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| 255 | AddTicks((value * 10000000) As Int64)
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| 256 | End Sub
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| 257 |
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| 258 | Sub AddMinutes(value As Double)
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| 259 | AddTicks((value * 600000000) As Int64)
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| 260 | End Sub
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| 261 |
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| 262 | Sub AddHours(value As Double)
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| 263 | AddTicks((value * 36000000000) As Int64)
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| 264 | End Sub
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| 265 |
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| 266 | Sub AddDays(value As Double)
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| 267 | AddTicks((value * 864000000000) As Int64)
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| 268 | End Sub
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| 269 |
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| 270 | Sub AddYears(value As Double)
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| 271 | Dim year As Long
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| 272 | Dim intValue As Long
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| 273 | year = Year
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| 274 | intValue = Int(value)
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| 275 | AddTicks(intValue * 315360000000000 + 864000000000 * ((year Mod 4 + intValue) \ 4 - (year Mod 100 + intValue) \ 100 + (year Mod 400 + intValue) \ 400))
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| 276 | If value < 0 Then
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[39] | 277 | If (year Mod 4 + intValue <= 0 And year Mod 100 > 4) Or (year Mod 400 <= 4) Then
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[36] | 278 | AddTicks(-864000000000)
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| 279 | End If
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| 280 | End If
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| 281 |
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| 282 | If IsLeapYear(year) = TRUE Then
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| 283 | AddTicks(((value - intValue) * 316224000000000) As Int64)
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| 284 | Else
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| 285 | AddTicks(((value - intValue) * 315360000000000) As Int64)
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| 286 | End If
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| 287 | End Sub
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| 288 |
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[93] | 289 | Static Function DaysInMonth(year As Long, month As Long) As Long
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[36] | 290 | If year < 1 Or year > 9999 Or month < 1 Or month > 12 Then
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| 291 | 'ArgumentOutOfRangeException
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| 292 | debug
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| 293 | End If
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[93] | 294 | If IsLeapYear(year) And month = 2 Then
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| 295 | Return 29
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| 296 | Else
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| 297 | Dim daysInMonth[11] = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] As Byte
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| 298 | Return daysInMonth[month - 1]
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| 299 | End If
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[36] | 300 | End Function
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| 301 |
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[93] | 302 | Static Function IsLeapYear(year As Long) As Boolean
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| 303 | If (year Mod 400) = 0 Then Return True
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| 304 | If (year Mod 100) = 0 Then Return False
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| 305 | If (year Mod 4) = 0 Then Return True
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[36] | 306 | End Function
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| 307 |
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| 308 | Function GetDateTimeFormats() As String
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[73] | 309 | Return GetDateTimeFormats(NULL)
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[36] | 310 | End Function
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| 311 |
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[73] | 312 | Function GetDateTimeFormats(format As *Byte) As String
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| 313 | Dim time As SYSTEMTIME
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| 314 | With time
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[81] | 315 | .wYear = Year As Word
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| 316 | .wMonth = Month As Word
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| 317 | .wDay = Day As Word
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| 318 | .wHour = Hour As Word
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| 319 | .wMinute = Minute As Word
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| 320 | .wSecond = Second As Word
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| 321 | .wMilliseconds = Millisecond As Word
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| 322 | .wDayOfWeek = DayOfWeek() As Word
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[73] | 323 | End With
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| 324 |
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| 325 | Dim size As Long
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| 326 | size = GetDateFormat(LOCALE_USER_DEFAULT, 0, time, format, NULL, 0)
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| 327 | GetDateTimeFormats.ReSize(size - 1)
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| 328 | GetDateFormat(LOCALE_USER_DEFAULT, 0, time, format, GetDateTimeFormats, size)
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| 329 |
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| 330 | Dim temp As String
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| 331 | If format = NULL Then
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| 332 | size = GetTimeFormat(LOCALE_USER_DEFAULT, 0, time, format, NULL, 0)
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| 333 | temp.ReSize(size - 1)
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| 334 | GetTimeFormat(LOCALE_USER_DEFAULT, 0, time, format, temp, size)
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| 335 | GetDateTimeFormats = GetDateTimeFormats + " " + temp
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| 336 | Else
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| 337 | size = GetTimeFormat(LOCALE_USER_DEFAULT, 0, time, GetDateTimeFormats, NULL, 0)
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| 338 | temp.ReSize(size - 1)
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| 339 | GetTimeFormat(LOCALE_USER_DEFAULT, 0, time, GetDateTimeFormats, temp, size)
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| 340 | GetDateTimeFormats = temp
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| 341 | End If
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| 342 | End Function
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| 343 |
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[36] | 344 | Static Function FromBinary(dateData As Int64) As DateTime
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| 345 | Dim date As DateTime((dateData And &H3FFFFFFFFFFFFFFF), kindFromBinary(dateData))
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| 346 | Return date
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| 347 | End Function
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| 348 |
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| 349 | Function ToBinary() As Int64
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| 350 | Return m_Date
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| 351 | End Function
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| 352 |
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| 353 | Static Function FromFileTime(fileTime As FILETIME) As DateTime
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| 354 | Dim localTime As FILETIME
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[82] | 355 | Dim time As SYSTEMTIME
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[36] | 356 | FileTimeToLocalFileTime(fileTime, localTime)
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| 357 | FileTimeToSystemTime(localTime, time)
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[82] | 358 |
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[81] | 359 | Dim date As DateTime(time, Local)
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[36] | 360 | Return date
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| 361 | End Function
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| 362 |
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| 363 | Function ToFileTime() As FILETIME
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| 364 | Dim time As SYSTEMTIME
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| 365 | With time
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| 366 | .wYear = Year As Word
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| 367 | .wMonth = Month As Word
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[82] | 368 | .wDayOfWeek = DayOfWeek As Word
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[36] | 369 | .wDay = Day As Word
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| 370 | .wHour = Hour As Word
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| 371 | .wMinute = Minute As Word
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| 372 | .wSecond = Second As Word
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| 373 | .wMilliseconds = Millisecond As Word
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| 374 | End With
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| 375 | Dim fileTime As FILETIME
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| 376 | SystemTimeToFileTime(time, fileTime)
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| 377 | Return fileTime
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| 378 | End Function
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| 379 |
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| 380 | Static Function FromFileTimeUtc(fileTime As FILETIME) As DateTime
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| 381 | Dim time As SYSTEMTIME
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| 382 | FileTimeToSystemTime(fileTime, time)
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[82] | 383 |
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[81] | 384 | Dim date As DateTime(time, Utc)
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[36] | 385 | Return date
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| 386 | End Function
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| 387 |
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| 388 | Function ToFileTimeUtc() As FILETIME
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| 389 | Dim fileTime As FILETIME
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| 390 | fileTime = ToFileTime()
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[82] | 391 | If Kind = Utc Then
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| 392 | ToFileTimeUtc = fileTime
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[36] | 393 | Else
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[82] | 394 | LocalFileTimeToFileTime(fileTime, ToFileTimeUtc) 'Return
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[36] | 395 | End If
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| 396 | End Function
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| 397 |
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| 398 | Function ToLocalTime() As DateTime
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[82] | 399 | If Kind = Local Then
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| 400 | ToLocalTime = This
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| 401 | Else
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| 402 | ToLocalTime = DateTime.FromFileTime(ToFileTime())
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[81] | 403 | ToLocalTime.Kind = Local
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| 404 | End If
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[36] | 405 | End Function
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[81] | 406 |
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| 407 | Function ToUniversalTime() As DateTime
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[82] | 408 | If Kind = Utc Then
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| 409 | ToUniversalTime = This
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| 410 | Else
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[81] | 411 | ToUniversalTime = DateTime.FromFileTimeUtc(ToFileTimeUtc())
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| 412 | ToUniversalTime.Kind = Utc
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| 413 | End If
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| 414 | End Function
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[36] | 415 | Private
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| 416 | Sub Ticks(value As Int64)
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| 417 | Dim kind As DateTimeKind
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| 418 | kind = Kind
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| 419 | m_Date = value
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| 420 | Kind = kind
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| 421 | End Sub
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| 422 |
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| 423 | Sub Kind(kind As DateTimeKind)
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| 424 | Dim temp As Int64
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| 425 | temp = kind
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| 426 | temp = (temp << 62) And &HC000000000000000
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| 427 | m_Date = (m_Date And &H3FFFFFFFFFFFFFFF) Or temp
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| 428 | End Sub
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| 429 |
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| 430 | Function totalDays() As Long
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| 431 | Return (Ticks \ 864000000000) As Long
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| 432 | End Function
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| 433 |
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| 434 | Function kindFromBinary(dateData As Int64) As Long
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| 435 | dateData = (dateData >> 62) And &H03
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| 436 | If dateData = &H01 Then
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[81] | 437 | Return Local
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[36] | 438 | ElseIf dateData = &H02 Then
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[81] | 439 | Return Unspecified
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[36] | 440 | ElseIf dateData = &H03 Then
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[81] | 441 | Return Utc
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[36] | 442 | End If
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| 443 | End Function
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| 444 | End Class
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| 445 |
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[81] | 446 | Const Enum DateTimeKind
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[36] | 447 | Local
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| 448 | Unspecified
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| 449 | Utc
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| 450 | End Enum
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| 451 |
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[81] | 452 | Const Enum DayOfWeek
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[36] | 453 | Sunday = 0
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| 454 | Monday
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| 455 | Tuesday
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| 456 | Wednesday
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| 457 | Thursday
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| 458 | Friday
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| 459 | Saturday
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| 460 | End Enum
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| 461 |
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| 462 | #endif '__SYSTEM_DATETIME_AB__
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