public static void ParseASCII(PBLFile pbl, BinaryReader reader)
{
byte[] longBytes = new byte[4];
byte[] intBytes = new byte[2];
int blockOffset = 0;
int lastReadBlockSize = BLOCK_SIZE;
byte[] block = null;
do
{
blockOffset += lastReadBlockSize;
block = reader.ReadBytes(BLOCK_SIZE);
lastReadBlockSize = BLOCK_SIZE;
if (block == null || block.Length < 4) break;
byte[] blockHdr = new byte[4];
Array.Copy(block, 0, blockHdr, 0, 4);
string prefix = ASCIIEncoding.ASCII.GetString(blockHdr);
switch (prefix)
{
case FREE_USED_BLOCK_PREFIX:
PBLBitmap bmp = new PBLBitmap();
bmp.OffsetOfNextBlock = System.BitConverter.ToInt32(block, 4);
byte[] dataBlockBitMap = new byte[504];
Array.Copy(block, 8, dataBlockBitMap, 0, 504);
bmp.Bitmap = new BitArray(dataBlockBitMap);
pbl.Bitmaps[blockOffset] = bmp;
break;
case OBJECT_DATA_BLOCK_PREFIX:
PBLData data = new PBLData();
pbl.Data[blockOffset] = data;
data.OffsetOfNextBlock = System.BitConverter.ToInt32(block, 4);
data.LengthOfData = System.BitConverter.ToInt16(block, 8);
byte[] objDataBytes = new byte[data.LengthOfData];
Array.Copy(block, 10, objDataBytes, 0, data.LengthOfData);
data.Data = objDataBytes;
break;
case NODE_BLOCK_PREFIX:
byte[] bigChunk = new byte[BLOCK_SIZE * NODE_BLOCK_COUNT];
byte[] secondPart = reader.ReadBytes(BLOCK_SIZE * (NODE_BLOCK_COUNT - 1));
lastReadBlockSize += BLOCK_SIZE * (NODE_BLOCK_COUNT - 1);
block.CopyTo(bigChunk, 0);
secondPart.CopyTo(bigChunk, BLOCK_SIZE);
pbl.Node.OffsetOfNextLeftBlock = System.BitConverter.ToInt32(block, 4);
pbl.Node.OffsetOfParentBlock = System.BitConverter.ToInt32(block, 8);
pbl.Node.OffsetOfNextRightBlock = System.BitConverter.ToInt32(block, 12);
pbl.Node.SpaceLeftInBlock = System.BitConverter.ToInt16(block, 16);
pbl.Node.EntryCount = System.BitConverter.ToInt16(block, 20);
int index = 32;
for (int i = 0; i < 7; i++)
{
PBLNodeEntry nodeEntry = new PBLNodeEntry(pbl.Node);
pbl.Node.Entries[blockOffset + index] = nodeEntry;
Array.Copy(block, index, longBytes, 0, 4);
string childPrefix = ASCIIEncoding.ASCII.GetString(longBytes).TrimEnd('\0');
index += 4;
Array.Copy(block, index, longBytes, 0, 4);
nodeEntry.Version = ASCIIEncoding.ASCII.GetString(longBytes).TrimEnd('\0');
index += 4;
Array.Copy(block, index, longBytes, 0, 4);
nodeEntry.OffsetOfFirstDataBlock = System.BitConverter.ToInt32(longBytes, 0);
index += 4;
Array.Copy(block, index, longBytes, 0, 4);
nodeEntry.ObjectSize = System.BitConverter.ToInt32(longBytes, 0);
index += 4;
Array.Copy(block, index, longBytes, 0, 4);
int dateLong = System.BitConverter.ToInt32(longBytes, 0);
nodeEntry.Date = ConvertFromUnixTimestamp(dateLong);
index += 4;
Array.Copy(block, index, intBytes, 0, 2);
nodeEntry.CommentLength = System.BitConverter.ToInt16(intBytes, 0);
index += 2;
Array.Copy(block, index, intBytes, 0, 2);
nodeEntry.ObjectNameLength = System.BitConverter.ToInt16(intBytes, 0);
index += 2;
byte[] objNameBytes = new byte[nodeEntry.ObjectNameLength.Value];
Array.Copy(block, index, objNameBytes, 0, nodeEntry.ObjectNameLength.Value);
nodeEntry.ObjectName = ASCIIEncoding.ASCII.GetString(objNameBytes).TrimEnd('\0');
index += nodeEntry.ObjectNameLength.Value;
}
break;
}
} while (block != null);
}
public static void ParseUnicode(PBLFile pbl, BinaryReader reader)
{
byte[] eightBytes = new byte[8];
byte[] longBytes = new byte[4];
byte[] intBytes = new byte[2];
int blockOffset = 0;
int lastReadBlockSize = BLOCK_SIZE_UNICODE;
byte[] block = null;
do
{
blockOffset += lastReadBlockSize;
block = reader.ReadBytes(BLOCK_SIZE);
lastReadBlockSize = BLOCK_SIZE;
if (block == null || block.Length < 4)
{
break;
}
byte[] blockHdr = new byte[4];
Array.Copy(block, 0, blockHdr, 0, 4);
string prefix = ASCIIEncoding.ASCII.GetString(blockHdr);
switch (prefix)
{
case FREE_USED_BLOCK_PREFIX:
PBLBitmap bmp = new PBLBitmap();
bmp.OffsetOfNextBlock = System.BitConverter.ToInt32(block, 4);
byte[] dataBlockBitMap = new byte[504];
Array.Copy(block, 8, dataBlockBitMap, 0, 504);
bmp.Bitmap = new BitArray(dataBlockBitMap);
pbl.Bitmaps[blockOffset] = bmp;
break;
case OBJECT_DATA_BLOCK_PREFIX:
PBLData data = new PBLData();
pbl.Data[blockOffset] = data;
data.OffsetOfNextBlock = System.BitConverter.ToInt32(block, 4);
data.LengthOfData = System.BitConverter.ToInt16(block, 8);
byte[] objDataBytes = new byte[data.LengthOfData];
Array.Copy(block, 10, objDataBytes, 0, data.LengthOfData);
data.Data = objDataBytes;
break;
case NODE_BLOCK_PREFIX:
byte[] bigChunk = new byte[BLOCK_SIZE * NODE_BLOCK_COUNT];
byte[] secondPart = reader.ReadBytes(BLOCK_SIZE * (NODE_BLOCK_COUNT - 1));
lastReadBlockSize += BLOCK_SIZE * (NODE_BLOCK_COUNT - 1);
block.CopyTo(bigChunk, 0);
secondPart.CopyTo(bigChunk, BLOCK_SIZE);
block = bigChunk;
pbl.Node.OffsetOfNextLeftBlock = System.BitConverter.ToInt32(block, 4);
pbl.Node.OffsetOfParentBlock = System.BitConverter.ToInt32(block, 8);
pbl.Node.OffsetOfNextRightBlock = System.BitConverter.ToInt32(block, 12);
pbl.Node.SpaceLeftInBlock = System.BitConverter.ToInt16(block, 16);
pbl.Node.EntryCount = System.BitConverter.ToInt16(block, 20);
int index = 32;
for (int i = 0; i < pbl.Node.EntryCount; i++)
{
PBLNodeEntry nodeEntry = new PBLNodeEntry(pbl.Node);
pbl.Node.Entries[blockOffset + index] = nodeEntry;
Array.Copy(block, index, longBytes, 0, 4);
string childPrefix = ASCIIEncoding.ASCII.GetString(longBytes).TrimEnd('\0');
index += 4;
Array.Copy(block, index, eightBytes, 0, 8);
nodeEntry.Version = UnicodeEncoding.Unicode.GetString(eightBytes).TrimEnd('\0');
index += 8;
Array.Copy(block, index, longBytes, 0, 4);
nodeEntry.OffsetOfFirstDataBlock = System.BitConverter.ToInt32(longBytes, 0);
index += 4;
Array.Copy(block, index, longBytes, 0, 4);
nodeEntry.ObjectSize = System.BitConverter.ToInt32(longBytes, 0);
index += 4;
Array.Copy(block, index, longBytes, 0, 4);
int dateLong = System.BitConverter.ToInt32(longBytes, 0);
nodeEntry.Date = ConvertFromUnixTimestamp(dateLong);
index += 4;
Array.Copy(block, index, intBytes, 0, 2);
nodeEntry.CommentLength = System.BitConverter.ToInt16(intBytes, 0);
index += 2;
Array.Copy(block, index, intBytes, 0, 2);
nodeEntry.ObjectNameLength = System.BitConverter.ToInt16(intBytes, 0);
index += 2;
int len = nodeEntry.ObjectNameLength.Value;
if (len > block.Length - index)
{
len = (block.Length - index);
}
byte[] objNameBytes = new byte[len];
Array.Copy(block, index, objNameBytes, 0, len);
nodeEntry.ObjectName = UnicodeEncoding.Unicode.GetString(objNameBytes).TrimEnd('\0');
index += len;
}
break;
}
} while (block != null);
}