private static unsafe void SetDateTime(string path, DateTime dateTime, DateTimeAttrib attrib, bool utc)
{
long rawFileTime = utc ? dateTime.ToFileTimeUtc() : dateTime.ToFileTime();
PathInternal.DllImport.FILETIME fileTime = new PathInternal.DllImport.FILETIME();
fileTime.dwLowDateTime = (uint)(rawFileTime & 0xFFFFFFFF);
fileTime.dwHighDateTime = (uint)((rawFileTime >> 32) & 0xFFFFFFFF);
IO.FileStream fs = OpenRead(path);
switch (attrib)
{
case DateTimeAttrib.Access:
PathInternal.DllImport.SetFileTime(fs.SafeFileHandle, (PathInternal.DllImport.FILETIME *) 0, &fileTime, (PathInternal.DllImport.FILETIME *) 0);
break;
case DateTimeAttrib.Creation:
PathInternal.DllImport.SetFileTime(fs.SafeFileHandle, &fileTime, (PathInternal.DllImport.FILETIME *) 0, (PathInternal.DllImport.FILETIME *) 0);
break;
case DateTimeAttrib.Write:
PathInternal.DllImport.SetFileTime(fs.SafeFileHandle, (PathInternal.DllImport.FILETIME *) 0, (PathInternal.DllImport.FILETIME *) 0, &fileTime);
break;
default:
throw new Exception("Unknown DateTimeAttrib in File.SetDateTime() function");
}
fs.Close();
}
private static DateTime GetDateTime(string path, DateTimeAttrib attrib, bool utc)
{
PathInternal.DllImport.WIN32_FILE_ATTRIBUTE_DATA fileData = new PathInternal.DllImport.WIN32_FILE_ATTRIBUTE_DATA();
if (PathInternal.DllImport.GetFileAttributesExW(PathInternal.ConvertToUnicodePath(path), 0, ref fileData))
{
switch (attrib)
{
case DateTimeAttrib.Write:
return(PathInternal.FILETIMEToDateTime(fileData.ftLastWriteTime, utc));
case DateTimeAttrib.Access:
return(PathInternal.FILETIMEToDateTime(fileData.ftLastAccessTime, utc));
case DateTimeAttrib.Creation:
return(PathInternal.FILETIMEToDateTime(fileData.ftCreationTime, utc));
default:
throw new Exception("Unknown DateTimeAttrib in File.GetDateTime() function");
}
}
else
{
throw new IO.FileNotFoundException(path);
}
}
private static unsafe void SetDateTime( string path, DateTime dateTime, DateTimeAttrib attrib, bool utc )
{
long rawFileTime = utc ? dateTime.ToFileTimeUtc() : dateTime.ToFileTime();
PathInternal.DllImport.FILETIME fileTime = new PathInternal.DllImport.FILETIME();
fileTime.dwLowDateTime = (uint)( rawFileTime & 0xFFFFFFFF );
fileTime.dwHighDateTime = (uint)( ( rawFileTime >> 32 ) & 0xFFFFFFFF );
IO.FileStream fs = OpenRead( path );
switch ( attrib )
{
case DateTimeAttrib.Access:
PathInternal.DllImport.SetFileTime( fs.SafeFileHandle, (PathInternal.DllImport.FILETIME*)0, &fileTime, (PathInternal.DllImport.FILETIME*)0 );
break;
case DateTimeAttrib.Creation:
PathInternal.DllImport.SetFileTime( fs.SafeFileHandle, &fileTime, (PathInternal.DllImport.FILETIME*)0, (PathInternal.DllImport.FILETIME*)0 );
break;
case DateTimeAttrib.Write:
PathInternal.DllImport.SetFileTime( fs.SafeFileHandle, (PathInternal.DllImport.FILETIME*)0, (PathInternal.DllImport.FILETIME*)0, &fileTime );
break;
default:
throw new Exception( "Unknown DateTimeAttrib in File.SetDateTime() function" );
}
fs.Close();
}
private static DateTime GetDateTime( string path, DateTimeAttrib attrib, bool utc )
{
PathInternal.DllImport.WIN32_FILE_ATTRIBUTE_DATA fileData = new PathInternal.DllImport.WIN32_FILE_ATTRIBUTE_DATA();
if ( PathInternal.DllImport.GetFileAttributesExW( PathInternal.ConvertToUnicodePath( path ), 0, ref fileData ) )
{
switch ( attrib )
{
case DateTimeAttrib.Write:
return PathInternal.FILETIMEToDateTime( fileData.ftLastWriteTime, utc );
case DateTimeAttrib.Access:
return PathInternal.FILETIMEToDateTime( fileData.ftLastAccessTime, utc );
case DateTimeAttrib.Creation:
return PathInternal.FILETIMEToDateTime( fileData.ftCreationTime, utc );
default:
throw new Exception( "Unknown DateTimeAttrib in File.GetDateTime() function" );
}
}
else
throw new IO.FileNotFoundException( path );
}
