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DotNetAnywhere/corlib/System/DateTime.cs
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#if !LOCALTEST | |
using System.Runtime.CompilerServices; | |
using System.Globalization; | |
using System.Text; | |
namespace System { | |
public struct DateTime : IFormattable, IComparable, IComparable<DateTime>, IEquatable<DateTime> { | |
public static readonly DateTime MinValue = new DateTime(0); | |
public static readonly DateTime MaxValue = new DateTime(3155378975999999999L); | |
[MethodImpl(MethodImplOptions.InternalCall)] | |
extern private static long InternalUtcNow(); | |
private TimeSpan ticks; | |
private DateTimeKind kind; | |
private static readonly int[] daysMonth = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
private static readonly int[] daysMonthLeap = { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
private static int AbsoluteDays(int year, int month, int day) { | |
int[] days; | |
int temp = 0, m = 1; | |
days = (IsLeapYear(year) ? daysMonthLeap : daysMonth); | |
while (m < month) | |
temp += days[m++]; | |
return ((day - 1) + temp + (365 * (year - 1)) + ((year - 1) / 4) - ((year - 1) / 100) + ((year - 1) / 400)); | |
} | |
public DateTime(long ticks) { | |
this.ticks = new TimeSpan(ticks); | |
this.kind = DateTimeKind.Unspecified; | |
} | |
public DateTime(long ticks, DateTimeKind kind) { | |
this.ticks = new TimeSpan(ticks); | |
this.kind = kind; | |
} | |
public DateTime(int year, int month, int day) | |
: this(year, month, day, 0, 0, 0, 0, DateTimeKind.Unspecified) { | |
} | |
public DateTime(int year, int month, int day, int hour, int minute, int second) | |
: this(year, month, day, hour, minute, second, 0, DateTimeKind.Unspecified) { | |
} | |
public DateTime(int year, int month, int day, int hour, int minute, int second, DateTimeKind kind) | |
: this(year, month, day, hour, minute, second, 0, kind) { | |
} | |
public DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond) | |
: this(year, month, day, hour, minute, second, millisecond, DateTimeKind.Unspecified) { | |
} | |
public DateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, DateTimeKind kind) { | |
ticks = new TimeSpan(AbsoluteDays(year, month, day), hour, minute, second, millisecond); | |
this.kind = kind; | |
} | |
public DateTime Date { | |
get { | |
return new DateTime(this.Year, this.Month, this.Day, 0, 0, 0, this.kind); | |
} | |
} | |
public int Day { | |
get { | |
return this.FromTicks(Which.Day); | |
} | |
} | |
public DayOfWeek DayOfWeek { | |
get { | |
return (DayOfWeek)((this.ticks.Days + 1) % 7); | |
} | |
} | |
public int DayOfYear { | |
get { | |
return this.FromTicks(Which.DayYear); | |
} | |
} | |
public int Hour { | |
get { | |
return this.ticks.Hours; | |
} | |
} | |
public DateTimeKind Kind { | |
get { | |
return this.kind; | |
} | |
} | |
public int Millisecond { | |
get { | |
return this.ticks.MilliSeconds; | |
} | |
} | |
public int Minute { | |
get { | |
return this.ticks.Minutes; | |
} | |
} | |
public int Month { | |
get { | |
return this.FromTicks(Which.Month); | |
} | |
} | |
public int Second { | |
get { | |
return this.ticks.Seconds; | |
} | |
} | |
public long Ticks { | |
get { | |
return this.ticks.Ticks; | |
} | |
} | |
public TimeSpan TimeOfDay { | |
get { | |
return new TimeSpan(this.ticks.Ticks % TimeSpan.TicksPerDay); | |
} | |
} | |
public int Year { | |
get { | |
return this.FromTicks(Which.Year); | |
} | |
} | |
public static DateTime UtcNow { | |
get { | |
return new DateTime(InternalUtcNow(), DateTimeKind.Utc); | |
} | |
} | |
private enum Which { | |
Day, | |
DayYear, | |
Month, | |
Year | |
}; | |
public DateTime Add(TimeSpan ts) { | |
return new DateTime(this.ticks.Ticks + ts.Ticks, this.kind); | |
} | |
public TimeSpan Subtract(DateTime dt) { | |
return this.ticks - dt.ticks; | |
} | |
public DateTime Subtract(TimeSpan ts) { | |
return new DateTime(this.ticks.Ticks - ts.Ticks, this.kind); | |
} | |
public DateTime AddDays(double days) { | |
return this.AddTicks((long)(days * (double)TimeSpan.TicksPerDay)); | |
} | |
public DateTime AddHours(double hours) { | |
return this.AddTicks((long)(hours * (double)TimeSpan.TicksPerHour)); | |
} | |
public DateTime AddMilliseconds(double ms) { | |
return this.AddTicks((long)(ms * (double)TimeSpan.TicksPerMillisecond)); | |
} | |
public DateTime AddMinutes(double mins) { | |
return this.AddTicks((long)(mins * (double)TimeSpan.TicksPerMinute)); | |
} | |
public DateTime AddSeconds(double seconds) { | |
return this.AddTicks((long)(seconds * (double)TimeSpan.TicksPerSecond)); | |
} | |
public DateTime AddTicks(long ticks) { | |
return new DateTime(this.ticks.Ticks + ticks, this.kind); | |
} | |
public DateTime AddMonths(int months) { | |
int day, month, year, maxday; | |
DateTime temp; | |
day = this.Day; | |
month = this.Month + (months % 12); | |
year = this.Year + months / 12; | |
if (month < 1) { | |
month = 12 + month; | |
year--; | |
} else if (month > 12) { | |
month = month - 12; | |
year++; | |
} | |
maxday = DaysInMonth(year, month); | |
if (day > maxday) | |
day = maxday; | |
temp = new DateTime(year, month, day); | |
temp.kind = kind; | |
return temp.Add(this.TimeOfDay); | |
} | |
public DateTime AddYears(int years) { | |
return this.AddMonths(years * 12); | |
} | |
public static DateTime operator +(DateTime d, TimeSpan t) { | |
return d.Add(t); | |
} | |
public static TimeSpan operator -(DateTime d1, DateTime d2) { | |
return d1.Subtract(d2); | |
} | |
public static DateTime operator -(DateTime d, TimeSpan t) { | |
return d.Subtract(t); | |
} | |
public static bool operator ==(DateTime d1, DateTime d2) { | |
return d1.ticks == d2.ticks; | |
} | |
public static bool operator !=(DateTime d1, DateTime d2) { | |
return d1.ticks != d2.ticks; | |
} | |
public static bool operator >(DateTime d1, DateTime d2) { | |
return d1.ticks > d2.ticks; | |
} | |
public static bool operator >=(DateTime d1, DateTime d2) { | |
return d1.ticks >= d2.ticks; | |
} | |
public static bool operator <(DateTime d1, DateTime d2) { | |
return d1.ticks < d2.ticks; | |
} | |
public static bool operator <=(DateTime d1, DateTime d2) { | |
return d1.ticks <= d2.ticks; | |
} | |
private const int dp400 = 146097; | |
private const int dp100 = 36524; | |
private const int dp4 = 1461; | |
public static bool IsLeapYear(int year) { | |
return ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0); | |
} | |
private int FromTicks(Which what) { | |
int num400, num100, num4, numyears; | |
int M = 1; | |
int[] days = daysMonth; | |
int totaldays = this.ticks.Days; | |
num400 = (totaldays / dp400); | |
totaldays -= num400 * dp400; | |
num100 = (totaldays / dp100); | |
if (num100 == 4) // leap | |
num100 = 3; | |
totaldays -= (num100 * dp100); | |
num4 = totaldays / dp4; | |
totaldays -= (num4 * dp4); | |
numyears = totaldays / 365; | |
if (numyears == 4) { | |
//leap | |
numyears = 3; | |
} | |
if (what == Which.Year) { | |
return num400 * 400 + num100 * 100 + num4 * 4 + numyears + 1; | |
} | |
totaldays -= (numyears * 365); | |
if (what == Which.DayYear) { | |
return totaldays + 1; | |
} | |
if ((numyears == 3) && ((num100 == 3) || !(num4 == 24))) { | |
//31 dec leapyear | |
days = daysMonthLeap; | |
} | |
while (totaldays >= days[M]) { | |
totaldays -= days[M++]; | |
} | |
if (what == Which.Month) { | |
return M; | |
} | |
return totaldays + 1; | |
} | |
public static int DaysInMonth(int year, int month) { | |
if (month < 1 || month > 12) { | |
throw new ArgumentOutOfRangeException(); | |
} | |
int[] days = (IsLeapYear(year) ? daysMonthLeap : daysMonth); | |
return days[month]; | |
} | |
public override bool Equals(object obj) { | |
if (!(obj is System.DateTime)) { | |
return false; | |
} | |
return ((DateTime)obj).ticks == ticks; | |
} | |
public override int GetHashCode() { | |
return this.ticks.GetHashCode(); | |
} | |
#region ToString() stuff | |
public override string ToString() { | |
return this.ToString("G", null); | |
} | |
public string ToString(IFormatProvider fp) { | |
return this.ToString(null, fp); | |
} | |
public string ToString(string format) { | |
return this.ToString(format, null); | |
} | |
public string ToString(string format, IFormatProvider fp) { | |
DateTimeFormatInfo dtf = DateTimeFormatInfo.GetInstance(fp); | |
if (string.IsNullOrEmpty(format)) { | |
format = "G"; | |
} | |
bool useUtc = false, useInvariant = false; | |
if (format.Length == 1) { | |
format = GetStandardPattern(format[0], dtf, out useUtc, out useInvariant); | |
} | |
return this.ToString2(format, dtf); | |
} | |
#region ToString helper functions | |
private string ToString2(string format, DateTimeFormatInfo dfi) { | |
// the length of the format is usually a good guess of the number | |
// of chars in the result. Might save us a few bytes sometimes | |
// Add + 10 for cases like mmmm dddd | |
StringBuilder result = new StringBuilder(format.Length + 10); | |
// For some cases, the output should not use culture dependent calendar | |
DateTimeFormatInfo inv = DateTimeFormatInfo.InvariantInfo; | |
if (format == inv.RFC1123Pattern) | |
dfi = inv; | |
else if (format == inv.UniversalSortableDateTimePattern) | |
dfi = inv; | |
int i = 0; | |
while (i < format.Length) { | |
int tokLen; | |
bool omitZeros = false; | |
char ch = format[i]; | |
switch (ch) { | |
// | |
// Time Formats | |
// | |
case 'h': | |
// hour, [1, 12] | |
tokLen = CountRepeat(format, i, ch); | |
int hr = this.Hour % 12; | |
if (hr == 0) | |
hr = 12; | |
ZeroPad(result, hr, tokLen == 1 ? 1 : 2); | |
break; | |
case 'H': | |
// hour, [0, 23] | |
tokLen = CountRepeat(format, i, ch); | |
ZeroPad(result, this.Hour, tokLen == 1 ? 1 : 2); | |
break; | |
case 'm': | |
// minute, [0, 59] | |
tokLen = CountRepeat(format, i, ch); | |
ZeroPad(result, this.Minute, tokLen == 1 ? 1 : 2); | |
break; | |
case 's': | |
// second [0, 29] | |
tokLen = CountRepeat(format, i, ch); | |
ZeroPad(result, this.Second, tokLen == 1 ? 1 : 2); | |
break; | |
case 'F': | |
omitZeros = true; | |
goto case 'f'; | |
case 'f': | |
// fraction of second, to same number of | |
// digits as there are f's | |
tokLen = CountRepeat(format, i, ch); | |
if (tokLen > 7) | |
throw new FormatException("Invalid Format String"); | |
int dec = (int)((long)(this.Ticks % TimeSpan.TicksPerSecond) / (long)Math.Pow(10, 7 - tokLen)); | |
int startLen = result.Length; | |
ZeroPad(result, dec, tokLen); | |
if (omitZeros) { | |
while (result.Length > startLen && result[result.Length - 1] == '0') | |
result.Length--; | |
// when the value was 0, then trim even preceding '.' (!) It is fixed character. | |
if (dec == 0 && startLen > 0 && result[startLen - 1] == '.') | |
result.Length--; | |
} | |
break; | |
case 't': | |
// AM/PM. t == first char, tt+ == full | |
tokLen = CountRepeat(format, i, ch); | |
string desig = this.Hour < 12 ? dfi.AMDesignator : dfi.PMDesignator; | |
if (tokLen == 1) { | |
if (desig.Length >= 1) | |
result.Append(desig[0]); | |
} else | |
result.Append(desig); | |
break; | |
case 'z': | |
// timezone. t = +/-h; tt = +/-hh; ttt+=+/-hh:mm | |
tokLen = CountRepeat(format, i, ch); | |
throw new NotImplementedException("TimeZone not supported"); | |
/*TimeSpan offset = TimeZone.CurrentTimeZone.GetUtcOffset(this); | |
if (offset.Ticks >= 0) | |
result.Append('+'); | |
else | |
result.Append('-'); | |
switch (tokLen) { | |
case 1: | |
result.Append(Math.Abs(offset.Hours)); | |
break; | |
case 2: | |
result.Append(Math.Abs(offset.Hours).ToString("00")); | |
break; | |
default: | |
result.Append(Math.Abs(offset.Hours).ToString("00")); | |
result.Append(':'); | |
result.Append(Math.Abs(offset.Minutes).ToString("00")); | |
break; | |
} | |
break;*/ | |
case 'K': // 'Z' (UTC) or zzz (Local) | |
tokLen = 1; | |
switch (kind) { | |
case DateTimeKind.Utc: | |
result.Append ('Z'); | |
break; | |
case DateTimeKind.Local: | |
throw new NotImplementedException("TimeZone not supported"); | |
/*offset = TimeZone.CurrentTimeZone.GetUtcOffset (this); | |
if (offset.Ticks >= 0) | |
result.Append ('+'); | |
else | |
result.Append ('-'); | |
result.Append (Math.Abs (offset.Hours).ToString ("00")); | |
result.Append (':'); | |
result.Append (Math.Abs (offset.Minutes).ToString ("00")); | |
break;*/ | |
} | |
break; | |
// | |
// Date tokens | |
// | |
case 'd': | |
// day. d(d?) = day of month (leading 0 if two d's) | |
// ddd = three leter day of week | |
// dddd+ full day-of-week | |
tokLen = CountRepeat(format, i, ch); | |
if (tokLen <= 2) | |
ZeroPad(result, dfi.Calendar.GetDayOfMonth(this), tokLen == 1 ? 1 : 2); | |
else if (tokLen == 3) | |
result.Append(dfi.GetAbbreviatedDayName(dfi.Calendar.GetDayOfWeek(this))); | |
else | |
result.Append(dfi.GetDayName(dfi.Calendar.GetDayOfWeek(this))); | |
break; | |
case 'M': | |
// Month.m(m?) = month # (with leading 0 if two mm) | |
// mmm = 3 letter name | |
// mmmm+ = full name | |
tokLen = CountRepeat(format, i, ch); | |
int month = dfi.Calendar.GetMonth(this); | |
if (tokLen <= 2) | |
ZeroPad(result, month, tokLen); | |
else if (tokLen == 3) | |
result.Append(dfi.GetAbbreviatedMonthName(month)); | |
else | |
result.Append(dfi.GetMonthName(month)); | |
break; | |
case 'y': | |
// Year. y(y?) = two digit year, with leading 0 if yy | |
// yyy+ full year, if yyy and yr < 1000, displayed as three digits | |
tokLen = CountRepeat(format, i, ch); | |
if (tokLen <= 2) | |
ZeroPad(result, dfi.Calendar.GetYear(this) % 100, tokLen); | |
else | |
ZeroPad(result, dfi.Calendar.GetYear(this), (tokLen == 3 ? 3 : 4)); | |
break; | |
case 'g': | |
// Era name | |
tokLen = CountRepeat(format, i, ch); | |
result.Append(dfi.GetEraName(dfi.Calendar.GetEra(this))); | |
break; | |
// | |
// Other | |
// | |
case ':': | |
result.Append(dfi.TimeSeparator); | |
tokLen = 1; | |
break; | |
case '/': | |
result.Append(dfi.DateSeparator); | |
tokLen = 1; | |
break; | |
case '\'': | |
case '"': | |
tokLen = ParseQuotedString(format, i, result); | |
break; | |
case '%': | |
if (i >= format.Length - 1) | |
throw new FormatException("% at end of date time string"); | |
if (format[i + 1] == '%') | |
throw new FormatException("%% in date string"); | |
// Look for the next char | |
tokLen = 1; | |
break; | |
case '\\': | |
// C-Style escape | |
if (i >= format.Length - 1) | |
throw new FormatException("\\ at end of date time string"); | |
result.Append(format[i + 1]); | |
tokLen = 2; | |
break; | |
default: | |
// catch all | |
result.Append(ch); | |
tokLen = 1; | |
break; | |
} | |
i += tokLen; | |
} | |
return result.ToString(); | |
} | |
private static int CountRepeat(string fmt, int p, char c) { | |
int l = fmt.Length; | |
int i = p + 1; | |
while ((i < l) && (fmt[i] == c)) | |
i++; | |
return i - p; | |
} | |
private static void ZeroPad(StringBuilder output, int digits, int len) { | |
char[] buffer = new char[16]; | |
int pos = 16; | |
do { | |
buffer[--pos] = (char)('0' + digits % 10); | |
digits /= 10; | |
len--; | |
} while (digits > 0); | |
while (len-- > 0) { | |
buffer[--pos] = '0'; | |
} | |
output.Append(buffer, pos, 16 - pos); | |
} | |
private static int ParseQuotedString(string fmt, int pos, StringBuilder output) { | |
// pos == position of " or ' | |
int len = fmt.Length; | |
int start = pos; | |
char quoteChar = fmt[pos++]; | |
while (pos < len) { | |
char ch = fmt[pos++]; | |
if (ch == quoteChar) | |
return pos - start; | |
if (ch == '\\') { | |
// C-Style escape | |
if (pos >= len) | |
throw new FormatException("Un-ended quote"); | |
output.Append(fmt[pos++]); | |
} else { | |
output.Append(ch); | |
} | |
} | |
throw new FormatException("Un-ended quote"); | |
} | |
private static string GetStandardPattern(char format, DateTimeFormatInfo dfi, out bool useUtc, out bool useInvariant) { | |
String pattern; | |
useUtc = false; | |
useInvariant = false; | |
switch (format) { | |
case 'd': | |
pattern = dfi.ShortDatePattern; | |
break; | |
case 'D': | |
pattern = dfi.LongDatePattern; | |
break; | |
case 'f': | |
pattern = dfi.LongDatePattern + " " + dfi.ShortTimePattern; | |
break; | |
case 'F': | |
pattern = dfi.FullDateTimePattern; | |
break; | |
case 'g': | |
pattern = dfi.ShortDatePattern + " " + dfi.ShortTimePattern; | |
break; | |
case 'G': | |
pattern = dfi.ShortDatePattern + " " + dfi.LongTimePattern; | |
break; | |
case 'm': | |
case 'M': | |
pattern = dfi.MonthDayPattern; | |
break; | |
#if NET_2_0 | |
case 'o': | |
pattern = dfi.RoundtripPattern; | |
break; | |
#endif | |
case 'r': | |
case 'R': | |
pattern = dfi.RFC1123Pattern; | |
// commented by LP 09/jun/2002, rfc 1123 pattern is always in GMT | |
// uncommented by AE 27/may/2004 | |
// useutc = true; | |
useInvariant = true; | |
break; | |
case 's': | |
pattern = dfi.SortableDateTimePattern; | |
break; | |
case 't': | |
pattern = dfi.ShortTimePattern; | |
break; | |
case 'T': | |
pattern = dfi.LongTimePattern; | |
break; | |
case 'u': | |
pattern = dfi.UniversalSortableDateTimePattern; | |
useUtc = true; | |
break; | |
case 'U': | |
// pattern = dfi.LongDatePattern + " " + dfi.LongTimePattern; | |
pattern = dfi.FullDateTimePattern; | |
useUtc = true; | |
break; | |
case 'y': | |
case 'Y': | |
pattern = dfi.YearMonthPattern; | |
break; | |
default: | |
pattern = null; | |
break; | |
// throw new FormatException (String.Format ("Invalid format pattern: '{0}'", format)); | |
} | |
return pattern; | |
} | |
#endregion | |
#endregion | |
#region IComparable Members | |
public int CompareTo(object obj) { | |
if (obj == null) { | |
return 1; | |
} | |
if (!(obj is DateTime)) { | |
throw new ArgumentException(); | |
} | |
return this.CompareTo((DateTime)obj); | |
} | |
#endregion | |
#region IComparable<DateTime> Members | |
public int CompareTo(DateTime x) { | |
return this.ticks.CompareTo(x.ticks); | |
} | |
#endregion | |
#region IEquatable<DateTime> Members | |
public bool Equals(DateTime x) { | |
return this.ticks.Equals(x.ticks); | |
} | |
#endregion | |
} | |
} | |
#endif |