public int intUncompressedSize; // Size of uncompressed message
internal Message()
{
MessageDate = DateTime.UtcNow;
ExpirationDate = DateTime.UtcNow.AddDays(21);
enmState = B2DecodeState.GetStartOfHeader;
bytUncompressed = new byte[1];
bytCompressed = new byte[1];
} // New - From Winlink
} // New - From Winlink
internal Message(string mId)
{
var messageStore = new MessageStore(DatabaseFactory.Get());
var msg = messageStore.GetToWinlinkMessage(mId);
Mime = UTF8Encoding.UTF8.GetString(msg);
bytUncompressed = new byte[1];
bytCompressed = new byte[1];
DecodeMime();
PackB2Message();
enmState = B2DecodeState.Inactive;
} // New - To Winlink
internal int BinaryInput(byte bytSingle) // String version of the message subject
// String version of Offset to include in the header
// The current header size
// The current block size
// The initial size of the binary array buffer
{
// BinaryCount += 1
// Disassembles the B2 binary byte stream, byte by byte...
var switchExpr = enmState;
switch (switchExpr)
{
case B2DecodeState.GetStartOfHeader:
{
if (bytSingle == SOH)
{
sbdSubject.Length = 0;
strOffset = "";
intB2Checksum = 0;
intProgress = 0;
bytCompressed = new byte[intArraySize + 1];
enmState = B2DecodeState.GetHeaderCount;
}
break;
}
case B2DecodeState.GetHeaderCount:
{
intHeaderSize = bytSingle;
enmState = B2DecodeState.GetSubject;
break;
}
case B2DecodeState.GetSubject:
{
if (bytSingle != NUL)
{
sbdSubject.Append((char)bytSingle);
}
else
{
Subject = sbdSubject.ToString();
if (string.IsNullOrEmpty(Subject))
{
Subject = "---";
}
enmState = B2DecodeState.GetOffset;
}
break;
}
case B2DecodeState.GetOffset:
{
if (bytSingle != NUL)
{
strOffset += ((char)bytSingle).ToString();
}
else
{
enmState = B2DecodeState.GetStartOfBlock;
return(2);
}
break;
}
case B2DecodeState.GetStartOfBlock:
{
if (bytSingle == STX)
{
enmState = B2DecodeState.GetBlockCount;
}
else if (bytSingle == EOT)
{
enmState = B2DecodeState.GetChecksum;
}
else
{
return(-1);
}
break;
}
case B2DecodeState.GetBlockCount:
{
intBlockSize = bytSingle;
if (intBlockSize == 0)
{
intBlockSize = 256;
}
enmState = B2DecodeState.GetDataBlock;
break;
}
case B2DecodeState.GetDataBlock:
{
bytCompressed[intProgress] = bytSingle;
intB2Checksum += bytSingle;
intProgress += 1;
if (intProgress > bytCompressed.Length - 1)
{
intArraySize += 10000;
Array.Resize(ref bytCompressed, intArraySize + 1);
}
intBlockSize -= 1;
if (intBlockSize == 0)
{
enmState = B2DecodeState.GetStartOfBlock;
return(2);
}
return(0);
}
case B2DecodeState.GetChecksum:
{
Array.Resize(ref bytCompressed, intProgress);
intB2Checksum = (intB2Checksum & 0xFF) * -1 & 0xFF;
if (bytSingle == intB2Checksum)
{
return(1);
}
return(-2);
}
}
return(default);
