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author | 2016-04-09 21:45:54 +1000 | |
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committer | 2016-04-09 21:52:08 +1000 | |
commit | e925c494fe30adafb615c075f5eb692dd2b2effa (patch) | |
tree | eed0b7ccadb049ed2dc8a72282c0235c4e94b6ae /3rdparty/lzma/CPP/Windows/TimeUtils.cpp | |
parent | b13e02f9751424dfc9ce6070676e2e318087a991 (diff) |
Update LZMA SDK to 15.14
Diffstat (limited to '3rdparty/lzma/CPP/Windows/TimeUtils.cpp')
-rw-r--r-- | 3rdparty/lzma/CPP/Windows/TimeUtils.cpp | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/3rdparty/lzma/CPP/Windows/TimeUtils.cpp b/3rdparty/lzma/CPP/Windows/TimeUtils.cpp new file mode 100644 index 00000000000..7ef44d9cc50 --- /dev/null +++ b/3rdparty/lzma/CPP/Windows/TimeUtils.cpp @@ -0,0 +1,203 @@ +// Windows/TimeUtils.cpp + +#include "StdAfx.h" + +#include "Defs.h" +#include "TimeUtils.h" + +namespace NWindows { +namespace NTime { + +static const UInt32 kNumTimeQuantumsInSecond = 10000000; +static const UInt32 kFileTimeStartYear = 1601; +static const UInt32 kDosTimeStartYear = 1980; +static const UInt32 kUnixTimeStartYear = 1970; +static const UInt64 kUnixTimeOffset = + (UInt64)60 * 60 * 24 * (89 + 365 * (kUnixTimeStartYear - kFileTimeStartYear)); +static const UInt64 kNumSecondsInFileTime = (UInt64)(Int64)-1 / kNumTimeQuantumsInSecond; + +bool DosTimeToFileTime(UInt32 dosTime, FILETIME &ft) throw() +{ + #if defined(_WIN32) && !defined(UNDER_CE) + return BOOLToBool(::DosDateTimeToFileTime((UInt16)(dosTime >> 16), (UInt16)(dosTime & 0xFFFF), &ft)); + #else + ft.dwLowDateTime = 0; + ft.dwHighDateTime = 0; + UInt64 res; + if (!GetSecondsSince1601(kDosTimeStartYear + (dosTime >> 25), (dosTime >> 21) & 0xF, (dosTime >> 16) & 0x1F, + (dosTime >> 11) & 0x1F, (dosTime >> 5) & 0x3F, (dosTime & 0x1F) * 2, res)) + return false; + res *= kNumTimeQuantumsInSecond; + ft.dwLowDateTime = (UInt32)res; + ft.dwHighDateTime = (UInt32)(res >> 32); + return true; + #endif +} + +static const UInt32 kHighDosTime = 0xFF9FBF7D; +static const UInt32 kLowDosTime = 0x210000; + +#define PERIOD_4 (4 * 365 + 1) +#define PERIOD_100 (PERIOD_4 * 25 - 1) +#define PERIOD_400 (PERIOD_100 * 4 + 1) + +bool FileTimeToDosTime(const FILETIME &ft, UInt32 &dosTime) throw() +{ + #if defined(_WIN32) && !defined(UNDER_CE) + + WORD datePart, timePart; + if (!::FileTimeToDosDateTime(&ft, &datePart, &timePart)) + { + dosTime = (ft.dwHighDateTime >= 0x01C00000) ? kHighDosTime : kLowDosTime; + return false; + } + dosTime = (((UInt32)datePart) << 16) + timePart; + + #else + + unsigned year, mon, day, hour, min, sec; + UInt64 v64 = ft.dwLowDateTime | ((UInt64)ft.dwHighDateTime << 32); + Byte ms[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; + unsigned temp; + UInt32 v; + v64 += (kNumTimeQuantumsInSecond * 2 - 1); + v64 /= kNumTimeQuantumsInSecond; + sec = (unsigned)(v64 % 60); + v64 /= 60; + min = (unsigned)(v64 % 60); + v64 /= 60; + hour = (unsigned)(v64 % 24); + v64 /= 24; + + v = (UInt32)v64; + + year = (unsigned)(kFileTimeStartYear + v / PERIOD_400 * 400); + v %= PERIOD_400; + + temp = (unsigned)(v / PERIOD_100); + if (temp == 4) + temp = 3; + year += temp * 100; + v -= temp * PERIOD_100; + + temp = v / PERIOD_4; + if (temp == 25) + temp = 24; + year += temp * 4; + v -= temp * PERIOD_4; + + temp = v / 365; + if (temp == 4) + temp = 3; + year += temp; + v -= temp * 365; + + if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)) + ms[1] = 29; + for (mon = 1; mon <= 12; mon++) + { + unsigned s = ms[mon - 1]; + if (v < s) + break; + v -= s; + } + day = (unsigned)v + 1; + + dosTime = kLowDosTime; + if (year < kDosTimeStartYear) + return false; + year -= kDosTimeStartYear; + dosTime = kHighDosTime; + if (year >= 128) + return false; + dosTime = (year << 25) | (mon << 21) | (day << 16) | (hour << 11) | (min << 5) | (sec >> 1); + #endif + return true; +} + +void UnixTimeToFileTime(UInt32 unixTime, FILETIME &ft) throw() +{ + UInt64 v = (kUnixTimeOffset + (UInt64)unixTime) * kNumTimeQuantumsInSecond; + ft.dwLowDateTime = (DWORD)v; + ft.dwHighDateTime = (DWORD)(v >> 32); +} + +bool UnixTime64ToFileTime(Int64 unixTime, FILETIME &ft) throw() +{ + if (unixTime > kNumSecondsInFileTime - kUnixTimeOffset) + { + ft.dwLowDateTime = ft.dwHighDateTime = (UInt32)(Int32)-1; + return false; + } + Int64 v = (Int64)kUnixTimeOffset + unixTime; + if (v < 0) + { + ft.dwLowDateTime = ft.dwHighDateTime = 0; + return false; + } + UInt64 v2 = (UInt64)v * kNumTimeQuantumsInSecond; + ft.dwLowDateTime = (DWORD)v2; + ft.dwHighDateTime = (DWORD)(v2 >> 32); + return true; +} + +Int64 FileTimeToUnixTime64(const FILETIME &ft) throw() +{ + UInt64 winTime = (((UInt64)ft.dwHighDateTime) << 32) + ft.dwLowDateTime; + return (Int64)(winTime / kNumTimeQuantumsInSecond) - kUnixTimeOffset; +} + +bool FileTimeToUnixTime(const FILETIME &ft, UInt32 &unixTime) throw() +{ + UInt64 winTime = (((UInt64)ft.dwHighDateTime) << 32) + ft.dwLowDateTime; + winTime /= kNumTimeQuantumsInSecond; + if (winTime < kUnixTimeOffset) + { + unixTime = 0; + return false; + } + winTime -= kUnixTimeOffset; + if (winTime > 0xFFFFFFFF) + { + unixTime = 0xFFFFFFFF; + return false; + } + unixTime = (UInt32)winTime; + return true; +} + +bool GetSecondsSince1601(unsigned year, unsigned month, unsigned day, + unsigned hour, unsigned min, unsigned sec, UInt64 &resSeconds) throw() +{ + resSeconds = 0; + if (year < kFileTimeStartYear || year >= 10000 || month < 1 || month > 12 || + day < 1 || day > 31 || hour > 23 || min > 59 || sec > 59) + return false; + UInt32 numYears = year - kFileTimeStartYear; + UInt32 numDays = numYears * 365 + numYears / 4 - numYears / 100 + numYears / 400; + Byte ms[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; + if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)) + ms[1] = 29; + month--; + for (unsigned i = 0; i < month; i++) + numDays += ms[i]; + numDays += day - 1; + resSeconds = ((UInt64)(numDays * 24 + hour) * 60 + min) * 60 + sec; + return true; +} + +void GetCurUtcFileTime(FILETIME &ft) throw() +{ + // Both variants provide same low resolution on WinXP: about 15 ms. + // But GetSystemTimeAsFileTime is much faster. + + #ifdef UNDER_CE + SYSTEMTIME st; + GetSystemTime(&st); + SystemTimeToFileTime(&st, &ft); + #else + GetSystemTimeAsFileTime(&ft); + #endif +} + +}} |