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341 lines
7.6 KiB
341 lines
7.6 KiB
#include "rar.hpp"
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void RarTime::GetLocal(RarLocalTime *lt)
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{
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#ifdef _WIN_ALL
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FILETIME ft;
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GetWinFT(&ft);
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FILETIME lft;
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if (WinNT() < WNT_VISTA)
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{
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// SystemTimeToTzSpecificLocalTime based code produces 1 hour error on XP.
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FileTimeToLocalFileTime(&ft,&lft);
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}
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else
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{
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// We use these functions instead of FileTimeToLocalFileTime according to
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// MSDN recommendation: "To account for daylight saving time
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// when converting a file time to a local time ..."
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SYSTEMTIME st1,st2;
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FileTimeToSystemTime(&ft,&st1);
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SystemTimeToTzSpecificLocalTime(NULL,&st1,&st2);
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SystemTimeToFileTime(&st2,&lft);
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// Correct precision loss (low 4 decimal digits) in FileTimeToSystemTime.
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FILETIME rft;
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SystemTimeToFileTime(&st1,&rft);
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uint64 Corrected=INT32TO64(ft.dwHighDateTime,ft.dwLowDateTime)-
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INT32TO64(rft.dwHighDateTime,rft.dwLowDateTime)+
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INT32TO64(lft.dwHighDateTime,lft.dwLowDateTime);
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lft.dwLowDateTime=(DWORD)Corrected;
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lft.dwHighDateTime=(DWORD)(Corrected>>32);
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}
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SYSTEMTIME st;
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FileTimeToSystemTime(&lft,&st);
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lt->Year=st.wYear;
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lt->Month=st.wMonth;
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lt->Day=st.wDay;
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lt->Hour=st.wHour;
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lt->Minute=st.wMinute;
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lt->Second=st.wSecond;
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lt->wDay=st.wDayOfWeek;
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lt->yDay=lt->Day-1;
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static int mdays[12]={31,28,31,30,31,30,31,31,30,31,30,31};
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for (uint I=1;I<lt->Month && I<=ASIZE(mdays);I++)
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lt->yDay+=mdays[I-1];
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if (lt->Month>2 && IsLeapYear(lt->Year))
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lt->yDay++;
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#else
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time_t ut=GetUnix();
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struct tm *t;
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t=localtime(&ut);
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lt->Year=t->tm_year+1900;
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lt->Month=t->tm_mon+1;
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lt->Day=t->tm_mday;
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lt->Hour=t->tm_hour;
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lt->Minute=t->tm_min;
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lt->Second=t->tm_sec;
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lt->wDay=t->tm_wday;
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lt->yDay=t->tm_yday;
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#endif
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lt->Reminder=(itime % TICKS_PER_SECOND);
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}
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void RarTime::SetLocal(RarLocalTime *lt)
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{
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#ifdef _WIN_ALL
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SYSTEMTIME st;
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st.wYear=lt->Year;
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st.wMonth=lt->Month;
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st.wDay=lt->Day;
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st.wHour=lt->Hour;
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st.wMinute=lt->Minute;
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st.wSecond=lt->Second;
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st.wMilliseconds=0;
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st.wDayOfWeek=0;
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FILETIME lft;
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if (SystemTimeToFileTime(&st,&lft))
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{
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FILETIME ft;
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if (WinNT() < WNT_VISTA)
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{
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// TzSpecificLocalTimeToSystemTime based code produces 1 hour error on XP.
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LocalFileTimeToFileTime(&lft,&ft);
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}
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else
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{
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// Reverse procedure which we do in GetLocal.
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SYSTEMTIME st1,st2;
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FileTimeToSystemTime(&lft,&st2); // st2 might be unequal to st, because we added lt->Reminder to lft.
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TzSpecificLocalTimeToSystemTime(NULL,&st2,&st1);
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SystemTimeToFileTime(&st1,&ft);
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// Correct precision loss (low 4 decimal digits) in FileTimeToSystemTime.
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FILETIME rft;
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SystemTimeToFileTime(&st2,&rft);
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uint64 Corrected=INT32TO64(lft.dwHighDateTime,lft.dwLowDateTime)-
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INT32TO64(rft.dwHighDateTime,rft.dwLowDateTime)+
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INT32TO64(ft.dwHighDateTime,ft.dwLowDateTime);
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ft.dwLowDateTime=(DWORD)Corrected;
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ft.dwHighDateTime=(DWORD)(Corrected>>32);
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}
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SetWinFT(&ft);
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}
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else
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Reset();
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#else
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struct tm t;
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t.tm_sec=lt->Second;
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t.tm_min=lt->Minute;
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t.tm_hour=lt->Hour;
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t.tm_mday=lt->Day;
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t.tm_mon=lt->Month-1;
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t.tm_year=lt->Year-1900;
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t.tm_isdst=-1;
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SetUnix(mktime(&t));
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#endif
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itime+=lt->Reminder;
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}
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#ifdef _WIN_ALL
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void RarTime::GetWinFT(FILETIME *ft)
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{
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_ULARGE_INTEGER ul;
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ul.QuadPart=GetWin();
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ft->dwLowDateTime=ul.LowPart;
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ft->dwHighDateTime=ul.HighPart;
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}
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void RarTime::SetWinFT(FILETIME *ft)
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{
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_ULARGE_INTEGER ul = {ft->dwLowDateTime, ft->dwHighDateTime};
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SetWin(ul.QuadPart);
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}
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#endif
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// Get 64-bit representation of Windows FILETIME (100ns since 01.01.1601).
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uint64 RarTime::GetWin()
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{
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return itime/(TICKS_PER_SECOND/10000000);
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}
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// Set 64-bit representation of Windows FILETIME (100ns since 01.01.1601).
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void RarTime::SetWin(uint64 WinTime)
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{
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itime=WinTime*(TICKS_PER_SECOND/10000000);
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}
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time_t RarTime::GetUnix()
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{
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return time_t(GetUnixNS()/1000000000);
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}
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void RarTime::SetUnix(time_t ut)
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{
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if (sizeof(ut)>4)
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SetUnixNS(uint64(ut)*1000000000);
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else
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{
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// Convert 32-bit and possibly signed time_t to uint32 first,
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// uint64 cast is not enough. Otherwise sign can expand to 64 bits.
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SetUnixNS(uint64(uint32(ut))*1000000000);
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}
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}
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// Get the high precision Unix time in nanoseconds since 01-01-1970.
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uint64 RarTime::GetUnixNS()
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{
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// 11644473600000000000 - number of ns between 01-01-1601 and 01-01-1970.
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uint64 ushift=INT32TO64(0xA1997B0B,0x4C6A0000);
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return itime*(1000000000/TICKS_PER_SECOND)-ushift;
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}
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// Set the high precision Unix time in nanoseconds since 01-01-1970.
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void RarTime::SetUnixNS(uint64 ns)
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{
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// 11644473600000000000 - number of ns between 01-01-1601 and 01-01-1970.
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uint64 ushift=INT32TO64(0xA1997B0B,0x4C6A0000);
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itime=(ns+ushift)/(1000000000/TICKS_PER_SECOND);
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}
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uint RarTime::GetDos()
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{
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RarLocalTime lt;
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GetLocal(<);
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uint DosTime=(lt.Second/2)|(lt.Minute<<5)|(lt.Hour<<11)|
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(lt.Day<<16)|(lt.Month<<21)|((lt.Year-1980)<<25);
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return DosTime;
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}
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void RarTime::SetDos(uint DosTime)
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{
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RarLocalTime lt;
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lt.Second=(DosTime & 0x1f)*2;
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lt.Minute=(DosTime>>5) & 0x3f;
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lt.Hour=(DosTime>>11) & 0x1f;
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lt.Day=(DosTime>>16) & 0x1f;
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lt.Month=(DosTime>>21) & 0x0f;
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lt.Year=(DosTime>>25)+1980;
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lt.Reminder=0;
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SetLocal(<);
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}
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void RarTime::GetText(wchar *DateStr,size_t MaxSize,bool FullMS)
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{
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if (IsSet())
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{
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RarLocalTime lt;
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GetLocal(<);
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if (FullMS)
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swprintf(DateStr,MaxSize,L"%u-%02u-%02u %02u:%02u:%02u,%09u",lt.Year,lt.Month,lt.Day,lt.Hour,lt.Minute,lt.Second,lt.Reminder*(1000000000/TICKS_PER_SECOND));
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else
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swprintf(DateStr,MaxSize,L"%u-%02u-%02u %02u:%02u",lt.Year,lt.Month,lt.Day,lt.Hour,lt.Minute);
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}
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else
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{
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// We use escape before '?' to avoid weird C trigraph characters.
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wcsncpyz(DateStr,L"\?\?\?\?-\?\?-\?\? \?\?:\?\?",MaxSize);
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}
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}
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#ifndef SFX_MODULE
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void RarTime::SetIsoText(const wchar *TimeText)
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{
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int Field[6];
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memset(Field,0,sizeof(Field));
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for (uint DigitCount=0;*TimeText!=0;TimeText++)
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if (IsDigit(*TimeText))
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{
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int FieldPos=DigitCount<4 ? 0:(DigitCount-4)/2+1;
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if (FieldPos<ASIZE(Field))
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Field[FieldPos]=Field[FieldPos]*10+*TimeText-'0';
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DigitCount++;
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}
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RarLocalTime lt;
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lt.Second=Field[5];
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lt.Minute=Field[4];
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lt.Hour=Field[3];
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lt.Day=Field[2]==0 ? 1:Field[2];
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lt.Month=Field[1]==0 ? 1:Field[1];
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lt.Year=Field[0];
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lt.Reminder=0;
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SetLocal(<);
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}
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#endif
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#ifndef SFX_MODULE
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void RarTime::SetAgeText(const wchar *TimeText)
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{
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uint Seconds=0,Value=0;
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for (uint I=0;TimeText[I]!=0;I++)
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{
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wchar Ch=TimeText[I];
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if (IsDigit(Ch))
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Value=Value*10+Ch-'0';
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else
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{
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switch(etoupperw(Ch))
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{
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case 'D':
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Seconds+=Value*24*3600;
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break;
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case 'H':
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Seconds+=Value*3600;
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break;
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case 'M':
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Seconds+=Value*60;
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break;
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case 'S':
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Seconds+=Value;
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break;
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}
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Value=0;
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}
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}
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SetCurrentTime();
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itime-=uint64(Seconds)*TICKS_PER_SECOND;
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}
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#endif
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void RarTime::SetCurrentTime()
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{
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#ifdef _WIN_ALL
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FILETIME ft;
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SYSTEMTIME st;
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GetSystemTime(&st);
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SystemTimeToFileTime(&st,&ft);
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SetWinFT(&ft);
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#else
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time_t st;
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time(&st);
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SetUnix(st);
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#endif
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}
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// Add the specified signed number of nanoseconds.
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void RarTime::Adjust(int64 ns)
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{
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ns/=1000000000/TICKS_PER_SECOND; // Convert ns to internal ticks.
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itime+=(uint64)ns;
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}
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#ifndef SFX_MODULE
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const wchar *GetMonthName(int Month)
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{
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return uiGetMonthName(Month);
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}
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#endif
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bool IsLeapYear(int Year)
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{
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return (Year&3)==0 && (Year%100!=0 || Year%400==0);
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}
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