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