private long DecodeHeader(BitFile sourceFile)
{
byte endOfHeader = Encoding.ASCII.GetBytes("\0")[0];
var headerBytes = new List <byte>();
byte headerByte;
do
{
headerByte = sourceFile.ReadByte();
headerBytes.Add(headerByte);
} while (headerByte != endOfHeader);
string header = Encoding.ASCII.GetString(headerBytes.ToArray());
if (header.Substring(0, 6) != "PAQ1\r\n")
{
throw new NotSupportedException("Bad PAQ1 header format.");
}
var size = header.Substring(6, header.Length - 7);
return(long.Parse(size));
}
