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Do TZ conversion in GPA conversion, keep timestamps in UTC. This makes ZIP conversion inconsistent across TZs, but less hacky everywhere else. Pending addition of a tool to just dump a combined timestamp.

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elasota
2020-01-23 03:45:36 -05:00
parent 38d172aa49
commit b20e1876e3
2 changed files with 29 additions and 27 deletions
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43
gpr2gpa/gpr2gpa.cpp
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@@ -112,38 +112,43 @@ void ConvertToMSDOSTimestamp(int64_t timestamp, uint16_t &msdosDate, uint16_t &m
int64_t epochStart64 = (static_cast<int64_t>(epochStartFT.dwLowDateTime) & 0xffffffff) | (static_cast<int64_t>(epochStartFT.dwHighDateTime) << 32);
int64_t offsetDate64 = (epochStart64 + timestamp * 10000000);
FILETIME timestampFT;
timestampFT.dwLowDateTime = static_cast<DWORD>(offsetDate64 & 0xffffffff);
timestampFT.dwHighDateTime = static_cast<DWORD>((offsetDate64 >> 32) & 0xffffffff);
FILETIME utcTimestampFT;
utcTimestampFT.dwLowDateTime = static_cast<DWORD>(offsetDate64 & 0xffffffff);
utcTimestampFT.dwHighDateTime = static_cast<DWORD>((offsetDate64 >> 32) & 0xffffffff);
// We could use FileTimeToDosDateTime but we want to clamp
SYSTEMTIME timestampST;
FileTimeToSystemTime(&timestampFT, &timestampST);
TIME_ZONE_INFORMATION tzInfo;
GetTimeZoneInformation(&tzInfo);
DWORD yearsSince1980 = timestampST.wYear - 1980;
SYSTEMTIME utcTimestampST;
FileTimeToSystemTime(&utcTimestampFT, &utcTimestampST);
SYSTEMTIME localTimestampST;
SystemTimeToTzSpecificLocalTime(&tzInfo, &utcTimestampST, &localTimestampST);
DWORD yearsSince1980 = localTimestampST.wYear - 1980;
if (yearsSince1980 < 0)
{
// Time machine
yearsSince1980 = 0;
timestampST.wSecond = 0;
timestampST.wMinute = 0;
timestampST.wHour = 0;
timestampST.wDay = 1;
timestampST.wMonth = 1;
localTimestampST.wSecond = 0;
localTimestampST.wMinute = 0;
localTimestampST.wHour = 0;
localTimestampST.wDay = 1;
localTimestampST.wMonth = 1;
}
else if (yearsSince1980 > 127)
{
// I was promised flying cars, but it's 2107 and you're still flying paper airplanes...
yearsSince1980 = 127;
timestampST.wSecond = 59;
timestampST.wMinute = 59;
timestampST.wHour = 23;
timestampST.wDay = 31;
timestampST.wMonth = 12;
localTimestampST.wSecond = 59;
localTimestampST.wMinute = 59;
localTimestampST.wHour = 23;
localTimestampST.wDay = 31;
localTimestampST.wMonth = 12;
}
msdosTime = (timestampST.wSecond / 2) | (timestampST.wMinute << 5) | (timestampST.wHour << 11);
msdosDate = timestampST.wDay | (timestampST.wMonth << 5) | (yearsSince1980 << 9);
msdosTime = (localTimestampST.wSecond / 2) | (localTimestampST.wMinute << 5) | (localTimestampST.wHour << 11);
msdosDate = localTimestampST.wDay | (localTimestampST.wMonth << 5) | (yearsSince1980 << 9);
}
void ExportZipFile(const char *path, const std::vector<PlannedEntry> &entries, const PortabilityLayer::MacFileProperties &mfp)