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