internal void ProcessEndBlock(bool verbose, bool extract, bool summary)
{
if (inFile)
{ // End of a file
if (extract && loadIt)
{
writeStream.Close();
}
if (summary)
{
Console.WriteLine(" {0, 12} bytes", totalFileSize);
}
totalFileSize = 0;
inFile = false;
}
else
{ // "End of a Directory" i.e. move up to superior one
// don't move above start dir for safety...
if (workingDir != baseDir)
{
workingDir = Directory.GetParent(workingDir).ToString();
}
if (verbose)
{
Console.WriteLine(" Popped dir - new dir is: " + workingDir);
}
}
if (verbose)
{
Console.WriteLine("End Block Processed");
}
}
internal void ProcessDataBlock(RecordHeader recHdr, bool verbose, bool extract)
{
var baBytes = ReadBlob(4);
DgDword ba = (DgDword)baBytes[0] << 24;
ba |= (DgDword)baBytes[1] << 16;
ba |= (DgDword)baBytes[2] << 8;
ba |= (DgDword)baBytes[3];
var blBytes = ReadBlob(4);
DgDword bl = (DgDword)blBytes[0] << 24;
bl |= (DgDword)blBytes[1] << 16;
bl |= (DgDword)blBytes[2] << 8;
bl |= (DgDword)blBytes[3];
var aln = ReadWord();
if (verbose)
{
Console.WriteLine(" Data Block: {0} (bytes)", bl);
}
// skip any alignment bytes (usually zero or one, could be more in theory)
if (aln > 0)
{
if (verbose)
{
Console.WriteLine(" Skipping {0} alignment byte(s)", aln);
}
_ = ReadBlob(aln);
}
var dataBlob = ReadBlob((int)bl);
if (extract)
{
try
{
// large areas of NULLs may be skipped over by DUMP_II/III
// this is achieved by simply advancing the block address so
// we must pad out if block address is beyond end of last block
if (ba > totalFileSize + 1)
{
var paddingSize = ba - totalFileSize;
var paddingBlocks = paddingSize / DgDiskBlockBytes;
var paddingBlock = new byte[DgDiskBlockBytes];
for (int p = 0; p < paddingBlocks; p++)
{
if (verbose)
{
Console.WriteLine(" Padding with one block");
}
writeStream.Write(paddingBlock);
totalFileSize += DgDiskBlockBytes;
}
}
writeStream.Write(dataBlob);
}
catch (Exception e)
{
Console.WriteLine("ERROR: Could not write data to file - {0}", e.Message);
System.Environment.Exit(1);
}
}
totalFileSize += bl;
inFile = true;
}
