| private GetData ( short tag ) : ITaggedData | ||
| tag | short | The tag to search for. |
| return | ITaggedData | |
private DateTime GetDateTime(ZipExtraData extraData)
{
// Check for NT timestamp
// NOTE: Disable by default to match behavior of InfoZIP
#if RESPECT_NT_TIMESTAMP
NTTaggedData ntData = extraData.GetData <NTTaggedData>();
if (ntData != null)
{
return(ntData.LastModificationTime);
}
#endif
// Check for Unix timestamp
ExtendedUnixData unixData = extraData.GetData <ExtendedUnixData>();
if (unixData != null &&
// Only apply modification time, but require all other values to be present
// This is done to match InfoZIP's behaviour
((unixData.Include & ExtendedUnixData.Flags.ModificationTime) != 0) &&
((unixData.Include & ExtendedUnixData.Flags.AccessTime) != 0) &&
((unixData.Include & ExtendedUnixData.Flags.CreateTime) != 0))
{
return(unixData.ModificationTime);
}
// Fall back to DOS time
uint sec = Math.Min(59, 2 * (dosTime & 0x1f));
uint min = Math.Min(59, (dosTime >> 5) & 0x3f);
uint hrs = Math.Min(23, (dosTime >> 11) & 0x1f);
uint mon = Math.Max(1, Math.Min(12, ((dosTime >> 21) & 0xf)));
uint year = ((dosTime >> 25) & 0x7f) + 1980;
int day = Math.Max(1, Math.Min(DateTime.DaysInMonth((int)year, (int)mon), (int)((dosTime >> 16) & 0x1f)));
return(new DateTime((int)year, (int)mon, day, (int)hrs, (int)min, (int)sec, DateTimeKind.Utc));
}
private static DateTime?GetDateTime(ZipExtraData extraData)
{
// Check for NT timestamp
// NOTE: Disable by default to match behavior of InfoZIP
#if RESPECT_NT_TIMESTAMP
NTTaggedData ntData = extraData.GetData <NTTaggedData>();
if (ntData != null)
{
return(ntData.LastModificationTime);
}
#endif
// Check for Unix timestamp
ExtendedUnixData unixData = extraData.GetData <ExtendedUnixData>();
if (unixData != null && unixData.Include.HasFlag(ExtendedUnixData.Flags.ModificationTime))
{
return(unixData.ModificationTime);
}
return(null);
}
private DateTime GetDateTime(ZipExtraData extraData)
{
ExtendedUnixData data = extraData.GetData <ExtendedUnixData>();
if (data != null && (byte)(data.Include & ExtendedUnixData.Flags.ModificationTime) != 0 && (byte)(data.Include & ExtendedUnixData.Flags.AccessTime) != 0 && (byte)(data.Include & ExtendedUnixData.Flags.CreateTime) != 0)
{
return(data.ModificationTime);
}
uint second = Math.Min(59u, 2u * (this.dosTime & 31u));
uint minute = Math.Min(59u, this.dosTime >> 5 & 63u);
uint hour = Math.Min(23u, this.dosTime >> 11 & 31u);
uint month = Math.Max(1u, Math.Min(12u, this.dosTime >> 21 & 15u));
uint year = (this.dosTime >> 25 & 127u) + 1980u;
int day = Math.Max(1, Math.Min(DateTime.DaysInMonth((int)year, (int)month), (int)(this.dosTime >> 16 & 31u)));
return(new DateTime((int)year, (int)month, day, (int)hour, (int)minute, (int)second, DateTimeKind.Utc));
}
private DateTime GetDateTime(ZipExtraData extraData)
{
ExtendedUnixData data = extraData.GetData <ExtendedUnixData>();
if (data != null && (data.Include & ExtendedUnixData.Flags.ModificationTime) != 0 && (data.Include & ExtendedUnixData.Flags.AccessTime) != 0 && (data.Include & ExtendedUnixData.Flags.CreateTime) != 0)
{
return(data.ModificationTime);
}
uint second = Math.Min(59u, 2 * (dosTime & 0x1F));
uint minute = Math.Min(59u, (dosTime >> 5) & 0x3F);
uint hour = Math.Min(23u, (dosTime >> 11) & 0x1F);
uint month = Math.Max(1u, Math.Min(12u, (dosTime >> 21) & 0xF));
uint year = ((dosTime >> 25) & 0x7F) + 1980;
int day = Math.Max(1, Math.Min(DateTime.DaysInMonth((int)year, (int)month), (int)((dosTime >> 16) & 0x1F)));
return(new DateTime((int)year, (int)month, day, (int)hour, (int)minute, (int)second, DateTimeKind.Utc));
}
private DateTime GetDateTime(ZipExtraData extraData)
{
// Check for NT timestamp
// NOTE: Disable by default to match behavior of InfoZIP
#if RESPECT_NT_TIMESTAMP
NTTaggedData ntData = extraData.GetData<NTTaggedData>();
if (ntData != null)
return ntData.LastModificationTime;
#endif
// Check for Unix timestamp
ExtendedUnixData unixData = extraData.GetData<ExtendedUnixData>();
if (unixData != null &&
// Only apply modification time, but require all other values to be present
// This is done to match InfoZIP's behaviour
((unixData.Include & ExtendedUnixData.Flags.ModificationTime) != 0) &&
((unixData.Include & ExtendedUnixData.Flags.AccessTime) != 0) &&
((unixData.Include & ExtendedUnixData.Flags.CreateTime) != 0))
return unixData.ModificationTime;
// Fall back to DOS time
uint sec = Math.Min(59, 2 * (dosTime & 0x1f));
uint min = Math.Min(59, (dosTime >> 5) & 0x3f);
uint hrs = Math.Min(23, (dosTime >> 11) & 0x1f);
uint mon = Math.Max(1, Math.Min(12, ((dosTime >> 21) & 0xf)));
uint year = ((dosTime >> 25) & 0x7f) + 1980;
int day = Math.Max(1, Math.Min(DateTime.DaysInMonth((int)year, (int)mon), (int)((dosTime >> 16) & 0x1f)));
return new DateTime((int)year, (int)mon, day, (int)hrs, (int)min, (int)sec, DateTimeKind.Utc);
}
