[36] | 1 | ' Classes/System/DateTime.ab
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| 2 |
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| 3 | #ifndef __SYSTEM_DATETIME_AB__
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[163] | 4 | #define __SYSTEM_DATETIME_AB__
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[36] | 5 |
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| 6 | Class DateTime
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| 7 | m_Date As Int64
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| 8 | Public
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[39] | 9 | Static MaxValue = 3162240000000000000 As Int64 'Const
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| 10 | Static MinValue = 316224000000000 As Int64 'Const
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[36] | 11 |
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[163] | 12 | Sub DateTime()
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| 13 | DateTime(316224000000000)
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| 14 | End Sub
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| 15 |
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[36] | 16 | Sub DateTime(ticks As Int64)
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| 17 | Ticks = ticks
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[103] | 18 | Kind = DateTimeKind.Unspecified
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[36] | 19 | End Sub
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| 20 |
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| 21 | Sub DateTime(ticks As Int64, kind As DateTimeKind)
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| 22 | DateTime(ticks)
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| 23 | Kind = kind
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| 24 | End Sub
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| 25 |
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| 26 | Sub DateTime(year As Long, month As Long, day As Long)
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| 27 | 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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| 28 | 'ArgumentOutOfRangeException
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| 29 | debug
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| 30 | End If
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| 31 | DateTime(316224000000000)
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[163] | 32 | DateTime( AddYears(year - 1) )
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[36] | 33 |
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| 34 | Dim days As Long
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| 35 | Dim i As Long
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| 36 | For i = 1 To month - 1
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| 37 | days += DaysInMonth(Year, i)
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| 38 | Next
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| 39 | days += day
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[163] | 40 | DateTime( AddDays(days - 1) )
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[36] | 41 | End Sub
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| 42 |
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| 43 | Sub DateTime(year As Long, month As Long, day As Long, kind As DateTimeKind)
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| 44 | DateTime(year, month, day)
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| 45 | Kind = kind
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| 46 | End Sub
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| 47 |
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| 48 | Sub DateTime(year As Long, month As Long, day As Long, hour As Long, minute As Long, second As Long)
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| 49 | If hour < 0 Or hour > 23 Or minute < 0 Or minute > 59 Or second < 0 Or second > 59 Then
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| 50 | 'ArgumentOutOfRangeException
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| 51 | debug
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| 52 | End If
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[163] | 53 |
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[36] | 54 | DateTime(year, month, day)
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[163] | 55 | DateTime( AddHours(hour) )
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| 56 | DateTime( AddMinutes(minute) )
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| 57 | DateTime( AddSeconds(second) )
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[36] | 58 | End Sub
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| 59 |
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[103] | 60 | 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] | 61 | DateTime(year, month, day, hour, minute, second)
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| 62 | Kind = kind
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[103] | 63 | End Sub
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[36] | 64 |
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| 65 | 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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| 66 | DateTime(year, month, day, hour, minute, second)
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[163] | 67 | DateTime( AddMilliseconds(millisecond) )
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[36] | 68 | End Sub
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| 69 |
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| 70 | 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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| 71 | DateTime(year, month, day, hour, minute, second, millisecond)
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| 72 | Kind = kind
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| 73 | End Sub
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| 74 |
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| 75 | Sub DateTime(ByRef time As SYSTEMTIME)
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| 76 | DateTime(time.wYear, time.wMonth, time.wDay, time.wHour, time.wMinute, time.wSecond, time.wMilliseconds)
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| 77 | End Sub
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| 78 |
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| 79 | Sub DateTime(ByRef time As SYSTEMTIME, kind As DateTimeKind)
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| 80 | DateTime(time.wYear, time.wMonth, time.wDay, time.wHour, time.wMinute, time.wSecond, time.wMilliseconds, kind)
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| 81 | End Sub
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| 82 |
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[40] | 83 | 'Copy Constructor
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[166] | 84 | Sub DateTime(ByRef datetime As DateTime)
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[40] | 85 | This.m_Date = datetime.m_Date
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| 86 | End Sub
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| 87 |
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[36] | 88 | Sub ~DateTime()
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| 89 | End Sub
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| 90 |
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[166] | 91 | Function Operator + (ByRef value As TimeSpan) As DateTime
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[107] | 92 | Dim date As DateTime(Ticks + value.Ticks)
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| 93 | Return date
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| 94 | End Function
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| 95 |
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[166] | 96 | Function Operator - (ByRef value As DateTime) As TimeSpan
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[107] | 97 | Return TimeSpan.FromTicks(Ticks - value.Ticks)
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| 98 | End Function
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| 99 |
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[166] | 100 | Function Operator - (ByRef value As TimeSpan) As DateTime
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[107] | 101 | Dim date As DateTime(Ticks - value.Ticks)
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| 102 | Return date
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| 103 | End Function
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| 104 |
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[93] | 105 | Function Operator == (ByRef value As DateTime) As Boolean
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[36] | 106 | Return Equals(value)
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| 107 | End Function
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| 108 |
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[93] | 109 | Function Operator <> (ByRef value As DateTime) As Boolean
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[36] | 110 | Return Not Equals(value)
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| 111 | End Function
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| 112 |
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[93] | 113 | Function Operator > (ByRef value As DateTime) As Boolean
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[36] | 114 | If DateTime.Compare(This, value) > 0 Then
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[93] | 115 | Return True
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[36] | 116 | Else
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[93] | 117 | Return False
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[36] | 118 | End If
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| 119 | End Function
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| 120 |
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[93] | 121 | Function Operator < (ByRef value As DateTime) As Boolean
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[36] | 122 | If DateTime.Compare(This, value) < 0 Then
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[93] | 123 | Return True
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[36] | 124 | Else
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[93] | 125 | Return False
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[36] | 126 | End If
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| 127 | End Function
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| 128 |
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[93] | 129 | Function Operator >= (ByRef value As DateTime) As Boolean
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[36] | 130 | If DateTime.Compare(This, value) => 0 Then
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[93] | 131 | Return True
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[36] | 132 | Else
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[93] | 133 | Return False
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[36] | 134 | End If
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| 135 | End Function
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| 136 |
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[93] | 137 | Function Operator <= (ByRef value As DateTime) As Boolean
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[36] | 138 | If DateTime.Compare(This, value) <= 0 Then
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[93] | 139 | Return True
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[36] | 140 | Else
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[93] | 141 | Return False
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[36] | 142 | End If
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| 143 | End Function
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| 144 |
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| 145 | 'Property
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| 146 | Function Ticks() As Int64
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| 147 | Return (m_Date And &H3FFFFFFFFFFFFFFF)
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| 148 | End Function
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| 149 |
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| 150 | Function Millisecond() As Long
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[107] | 151 | Return (Ticks \ TimeSpan.TicksPerMillisecond Mod 1000) As Long
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[36] | 152 | End Function
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| 153 |
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| 154 | Function Second() As Long
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[107] | 155 | Return (Ticks \ TimeSpan.TicksPerSecond Mod 60) As Long
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[36] | 156 | End Function
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| 157 |
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| 158 | Function Minute() As Long
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[107] | 159 | Return (Ticks \ TimeSpan.TicksPerMinute Mod 60) As Long
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[36] | 160 | End Function
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| 161 |
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| 162 | Function Hour() As Long
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[107] | 163 | Return (Ticks \ TimeSpan.TicksPerHour Mod 24) As Long
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[36] | 164 | End Function
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| 165 |
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| 166 | Function Day() As Long
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| 167 | Dim day As Long
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| 168 | day = DayOfYear
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| 169 |
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| 170 | Dim i As Long
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| 171 | For i = 1 To Month - 1
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| 172 | day -= DaysInMonth(Year, i)
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| 173 | Next
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| 174 | Return day
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| 175 | End Function
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| 176 |
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| 177 | Function Month() As Long
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| 178 | Dim year As Long
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| 179 | Dim day As Long
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| 180 | year = Year
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| 181 | day = DayOfYear
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| 182 |
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| 183 | Dim i As Long
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| 184 | For i = 1 To 12
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| 185 | day -= DaysInMonth(year, i)
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[81] | 186 | If day <= 0 Then Return i
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[36] | 187 | Next
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| 188 | Return 12
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| 189 | End Function
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| 190 |
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| 191 | Function Year() As Long
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| 192 | Dim day As Long
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| 193 | day = totalDays()
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| 194 | Return Int((day + day \ 36523 - day \ 146097) / 365.25)
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| 195 | End Function
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| 196 |
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[107] | 197 | Function DayOfWeek() As Long
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[36] | 198 | Return totalDays() Mod 7 - 1
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| 199 | End Function
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| 200 |
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[81] | 201 | Function Kind() As DateTimeKind
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[36] | 202 | Return kindFromBinary(m_Date)
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| 203 | End Function
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| 204 |
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| 205 | Function DayOfYear() As Long
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| 206 | Dim day As Long
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| 207 | day = totalDays()
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| 208 | Return day - Int(Year * 365.25 - day \ 36523 + day \ 146097)
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| 209 | End Function
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| 210 |
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| 211 | Function Date() As DateTime
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| 212 | Dim date As DateTime(Year, Month, Day, Kind)
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| 213 | Return date
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| 214 | End Function
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| 215 |
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| 216 | Static Function Now() As DateTime
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| 217 | Dim time As SYSTEMTIME
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| 218 | GetLocalTime(time)
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[103] | 219 | Dim date As DateTime(time, DateTimeKind.Local)
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[36] | 220 | Return date
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| 221 | End Function
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| 222 |
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| 223 | Static Function ToDay() As DateTime
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| 224 | Dim time As SYSTEMTIME
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| 225 | GetLocalTime(time)
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[103] | 226 | Dim date As DateTime(time.wYear, time.wMonth, time.wDay, DateTimeKind.Local)
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[36] | 227 | Return date
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| 228 | End Function
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| 229 |
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| 230 | Static Function UtcNow() As DateTime
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| 231 | Dim time As SYSTEMTIME
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| 232 | GetSystemTime(time)
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[103] | 233 | Dim date As DateTime(time, DateTimeKind.Utc)
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[36] | 234 | Return date
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| 235 | End Function
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| 236 |
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| 237 | 'method
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| 238 | Static Function Compare(ByRef t1 As DateTime, ByRef t2 As DateTime) As Int64
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| 239 | Return t1.Ticks - t2.Ticks
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| 240 | End Function
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| 241 |
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[93] | 242 | Function Equals(ByRef value As DateTime) As Boolean
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[36] | 243 | If value.m_Date = m_Date Then
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[93] | 244 | Return True
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[36] | 245 | Else
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[93] | 246 | Return False
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[36] | 247 | End If
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| 248 | End Function
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| 249 |
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[93] | 250 | Static Function Equals(ByRef t1 As DateTime, ByRef t2 As DateTime) As Boolean
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[36] | 251 | If t1.m_Date = t2.m_Date Then
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[93] | 252 | Return True
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[36] | 253 | Else
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[93] | 254 | Return False
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[36] | 255 | End If
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| 256 | End Function
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| 257 |
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[166] | 258 | Override Function GetHashCode() As Long
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| 259 | Return HIDWORD(m_Date) Xor LODWORD(m_Date)
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| 260 | End Function
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| 261 |
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[107] | 262 | Function Add(ByRef value As TimeSpan) As DateTime
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| 263 | Return This + value
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| 264 | End Function
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| 265 |
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| 266 | Function AddTicks(value As Int64) As DateTime
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[36] | 267 | Dim ticks As Int64
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| 268 | ticks = Ticks
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[107] | 269 | If (ticks > MaxValue - value) Or (ticks < MinValue - value) Then
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[36] | 270 | 'ArgumentOutOfRangeException
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| 271 | debug
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| 272 | End If
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| 273 |
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[207] | 274 | Return New DateTime( ticks + value, Kind )
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[107] | 275 | End Function
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[36] | 276 |
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[107] | 277 | Function AddMilliseconds(value As Double) As DateTime
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| 278 | Return AddTicks((value * TimeSpan.TicksPerMillisecond) As Int64)
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| 279 | End Function
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[36] | 280 |
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[107] | 281 | Function AddSeconds(value As Double) As DateTime
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| 282 | Return AddTicks((value * TimeSpan.TicksPerSecond) As Int64)
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| 283 | End Function
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[36] | 284 |
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[107] | 285 | Function AddMinutes(value As Double) As DateTime
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| 286 | Return AddTicks((value * TimeSpan.TicksPerMinute) As Int64)
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| 287 | End Function
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[36] | 288 |
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[107] | 289 | Function AddHours(value As Double) As DateTime
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| 290 | Return AddTicks((value * TimeSpan.TicksPerHour) As Int64)
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| 291 | End Function
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[36] | 292 |
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[107] | 293 | Function AddDays(value As Double) As DateTime
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| 294 | Return AddTicks((value * TimeSpan.TicksPerDay) As Int64)
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| 295 | End Function
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| 296 |
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| 297 | Function AddYears(value As Double) As DateTime
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[36] | 298 | Dim year As Long
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| 299 | Dim intValue As Long
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[107] | 300 | Dim ticks As Int64
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[36] | 301 | year = Year
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| 302 | intValue = Int(value)
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[107] | 303 | ticks = Ticks + intValue * 315360000000000 + 864000000000 * ((year Mod 4 + intValue) \ 4 - (year Mod 100 + intValue) \ 100 + (year Mod 400 + intValue) \ 400)
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| 304 |
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[36] | 305 | If value < 0 Then
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[39] | 306 | If (year Mod 4 + intValue <= 0 And year Mod 100 > 4) Or (year Mod 400 <= 4) Then
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[107] | 307 | ticks -= 864000000000
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[36] | 308 | End If
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| 309 | End If
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| 310 | If IsLeapYear(year) = TRUE Then
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[107] | 311 | ticks += (value - intValue) * 316224000000000
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[36] | 312 | Else
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[107] | 313 | ticks += (value - intValue) * 315360000000000
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[36] | 314 | End If
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[107] | 315 |
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[207] | 316 | Return New DateTime( ticks, Kind )
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[107] | 317 | End Function
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[36] | 318 |
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[107] | 319 | Function Subtract(ByRef value As DateTime) As TimeSpan
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| 320 | Return This - value
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| 321 | End Function
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| 322 |
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| 323 | Function Subtract(ByRef value As TimeSpan) As DateTime
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| 324 | Return This - value
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| 325 | End Function
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| 326 |
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[93] | 327 | Static Function DaysInMonth(year As Long, month As Long) As Long
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[36] | 328 | If year < 1 Or year > 9999 Or month < 1 Or month > 12 Then
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| 329 | 'ArgumentOutOfRangeException
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| 330 | debug
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| 331 | End If
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[93] | 332 | If IsLeapYear(year) And month = 2 Then
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| 333 | Return 29
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| 334 | Else
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| 335 | Dim daysInMonth[11] = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] As Byte
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| 336 | Return daysInMonth[month - 1]
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| 337 | End If
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[36] | 338 | End Function
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| 339 |
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[93] | 340 | Static Function IsLeapYear(year As Long) As Boolean
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| 341 | If (year Mod 400) = 0 Then Return True
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| 342 | If (year Mod 100) = 0 Then Return False
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| 343 | If (year Mod 4) = 0 Then Return True
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[103] | 344 | Return False
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[36] | 345 | End Function
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| 346 |
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| 347 | Function GetDateTimeFormats() As String
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[73] | 348 | Return GetDateTimeFormats(NULL)
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[36] | 349 | End Function
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| 350 |
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[73] | 351 | Function GetDateTimeFormats(format As *Byte) As String
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| 352 | Dim time As SYSTEMTIME
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| 353 | With time
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[81] | 354 | .wYear = Year As Word
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| 355 | .wMonth = Month As Word
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| 356 | .wDay = Day As Word
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| 357 | .wHour = Hour As Word
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| 358 | .wMinute = Minute As Word
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| 359 | .wSecond = Second As Word
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| 360 | .wMilliseconds = Millisecond As Word
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| 361 | .wDayOfWeek = DayOfWeek() As Word
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[73] | 362 | End With
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| 363 |
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[207] | 364 | GetDateTimeFormats = New String()
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| 365 |
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[73] | 366 | Dim size As Long
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| 367 | size = GetDateFormat(LOCALE_USER_DEFAULT, 0, time, format, NULL, 0)
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| 368 | GetDateTimeFormats.ReSize(size - 1)
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| 369 | GetDateFormat(LOCALE_USER_DEFAULT, 0, time, format, GetDateTimeFormats, size)
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| 370 |
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| 371 | Dim temp As String
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| 372 | If format = NULL Then
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| 373 | size = GetTimeFormat(LOCALE_USER_DEFAULT, 0, time, format, NULL, 0)
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| 374 | temp.ReSize(size - 1)
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| 375 | GetTimeFormat(LOCALE_USER_DEFAULT, 0, time, format, temp, size)
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| 376 | GetDateTimeFormats = GetDateTimeFormats + " " + temp
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| 377 | Else
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| 378 | size = GetTimeFormat(LOCALE_USER_DEFAULT, 0, time, GetDateTimeFormats, NULL, 0)
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| 379 | temp.ReSize(size - 1)
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| 380 | GetTimeFormat(LOCALE_USER_DEFAULT, 0, time, GetDateTimeFormats, temp, size)
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| 381 | GetDateTimeFormats = temp
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| 382 | End If
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| 383 | End Function
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| 384 |
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[36] | 385 | Static Function FromBinary(dateData As Int64) As DateTime
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| 386 | Dim date As DateTime((dateData And &H3FFFFFFFFFFFFFFF), kindFromBinary(dateData))
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| 387 | Return date
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| 388 | End Function
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| 389 |
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| 390 | Function ToBinary() As Int64
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| 391 | Return m_Date
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| 392 | End Function
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| 393 |
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| 394 | Static Function FromFileTime(fileTime As FILETIME) As DateTime
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| 395 | Dim localTime As FILETIME
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[82] | 396 | Dim time As SYSTEMTIME
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[36] | 397 | FileTimeToLocalFileTime(fileTime, localTime)
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| 398 | FileTimeToSystemTime(localTime, time)
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[82] | 399 |
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[103] | 400 | Dim date As DateTime(time, DateTimeKind.Local)
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[36] | 401 | Return date
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| 402 | End Function
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| 403 |
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| 404 | Function ToFileTime() As FILETIME
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| 405 | Dim time As SYSTEMTIME
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| 406 | With time
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| 407 | .wYear = Year As Word
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| 408 | .wMonth = Month As Word
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[82] | 409 | .wDayOfWeek = DayOfWeek As Word
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[36] | 410 | .wDay = Day As Word
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| 411 | .wHour = Hour As Word
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| 412 | .wMinute = Minute As Word
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| 413 | .wSecond = Second As Word
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| 414 | .wMilliseconds = Millisecond As Word
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| 415 | End With
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| 416 | Dim fileTime As FILETIME
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| 417 | SystemTimeToFileTime(time, fileTime)
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| 418 | Return fileTime
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| 419 | End Function
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| 420 |
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| 421 | Static Function FromFileTimeUtc(fileTime As FILETIME) As DateTime
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| 422 | Dim time As SYSTEMTIME
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| 423 | FileTimeToSystemTime(fileTime, time)
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[82] | 424 |
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[103] | 425 | Dim date As DateTime(time, DateTimeKind.Utc)
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[36] | 426 | Return date
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| 427 | End Function
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| 428 |
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| 429 | Function ToFileTimeUtc() As FILETIME
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| 430 | Dim fileTime As FILETIME
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| 431 | fileTime = ToFileTime()
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[103] | 432 | If Kind = DateTimeKind.Utc Then
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[82] | 433 | ToFileTimeUtc = fileTime
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[36] | 434 | Else
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[82] | 435 | LocalFileTimeToFileTime(fileTime, ToFileTimeUtc) 'Return
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[36] | 436 | End If
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| 437 | End Function
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| 438 |
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| 439 | Function ToLocalTime() As DateTime
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[103] | 440 | If Kind = DateTimeKind.Local Then
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[82] | 441 | ToLocalTime = This
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| 442 | Else
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| 443 | ToLocalTime = DateTime.FromFileTime(ToFileTime())
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[103] | 444 | ToLocalTime.Kind = DateTimeKind.Local
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[81] | 445 | End If
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[36] | 446 | End Function
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[81] | 447 |
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| 448 | Function ToUniversalTime() As DateTime
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[103] | 449 | If Kind = DateTimeKind.Utc Then
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[82] | 450 | ToUniversalTime = This
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| 451 | Else
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[81] | 452 | ToUniversalTime = DateTime.FromFileTimeUtc(ToFileTimeUtc())
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[103] | 453 | ToUniversalTime.Kind = DateTimeKind.Utc
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[81] | 454 | End If
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| 455 | End Function
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[36] | 456 | Private
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| 457 | Sub Ticks(value As Int64)
|
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| 458 | Dim kind As DateTimeKind
|
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| 459 | kind = Kind
|
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| 460 | m_Date = value
|
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| 461 | Kind = kind
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| 462 | End Sub
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| 463 |
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| 464 | Sub Kind(kind As DateTimeKind)
|
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| 465 | Dim temp As Int64
|
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| 466 | temp = kind
|
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| 467 | temp = (temp << 62) And &HC000000000000000
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| 468 | m_Date = (m_Date And &H3FFFFFFFFFFFFFFF) Or temp
|
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| 469 | End Sub
|
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| 470 |
|
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| 471 | Function totalDays() As Long
|
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[107] | 472 | Return (Ticks \ TimeSpan.TicksPerDay) As Long
|
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[36] | 473 | End Function
|
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| 474 |
|
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[103] | 475 | Function kindFromBinary(dateData As Int64) As DateTimeKind
|
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[36] | 476 | dateData = (dateData >> 62) And &H03
|
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| 477 | If dateData = &H01 Then
|
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[103] | 478 | Return DateTimeKind.Local
|
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[36] | 479 | ElseIf dateData = &H02 Then
|
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[103] | 480 | Return DateTimeKind.Unspecified
|
---|
[36] | 481 | ElseIf dateData = &H03 Then
|
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[103] | 482 | Return DateTimeKind.Utc
|
---|
[207] | 483 | Else
|
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| 484 | ' どれにも該当しなかったときはどうなるんでしょうか??
|
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| 485 | Return DateTimeKind.Local
|
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[36] | 486 | End If
|
---|
| 487 | End Function
|
---|
| 488 | End Class
|
---|
| 489 |
|
---|
[103] | 490 | Enum DateTimeKind
|
---|
[36] | 491 | Local
|
---|
| 492 | Unspecified
|
---|
| 493 | Utc
|
---|
| 494 | End Enum
|
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| 495 |
|
---|
[103] | 496 | Enum DayOfWeek
|
---|
[36] | 497 | Sunday = 0
|
---|
| 498 | Monday
|
---|
| 499 | Tuesday
|
---|
| 500 | Wednesday
|
---|
| 501 | Thursday
|
---|
| 502 | Friday
|
---|
| 503 | Saturday
|
---|
| 504 | End Enum
|
---|
| 505 |
|
---|
| 506 | #endif '__SYSTEM_DATETIME_AB__
|
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