/// <summary>
/// Initializes a new instance of the <see cref="Warcraft.MPQ.MPQ"/> class.
/// </summary>
/// <param name="mpqStream">An open stream to data containing an MPQ archive.</param>
public MPQ([NotNull] Stream mpqStream)
{
_archiveReader = new BinaryReader(mpqStream);
Header = new MPQHeader(_archiveReader.ReadBytes((int)PeekHeaderSize()));
// Seek to the hash table and load it
_archiveReader.BaseStream.Position = (long)Header.GetHashTableOffset();
var encryptedHashTable = _archiveReader.ReadBytes((int)Header.GetHashTableSize());
var hashTableData = MPQCrypt.DecryptData(encryptedHashTable, HashTable.TableKey);
ArchiveHashTable = new HashTable(hashTableData);
// Seek to the block table and load it
_archiveReader.BaseStream.Position = (long)Header.GetBlockTableOffset();
var encryptedBlockTable = _archiveReader.ReadBytes((int)Header.GetBlockTableSize());
var blockTableData = MPQCrypt.DecryptData(encryptedBlockTable, BlockTable.TableKey);
ArchiveBlockTable = new BlockTable(blockTableData);
if (Header.GetFormat() != MPQFormat.ExtendedV1)
{
return;
}
// Seek to the extended block table and load it, if necessary
if (Header.GetExtendedBlockTableOffset() <= 0)
{
return;
}
_archiveReader.BaseStream.Position = (long)Header.GetExtendedBlockTableOffset();
var extendedTable = new List <ushort>();
for (var i = 0; i < Header.GetBlockTableEntryCount(); ++i)
{
extendedTable.Add(_archiveReader.ReadUInt16());
}
ExtendedBlockTable = extendedTable;
}
/// <summary>
/// Initializes a new instance of the <see cref="Warcraft.MPQ.MPQ"/> class.
/// </summary>
/// <param name="mpqStream">An open stream to data containing an MPQ archive.</param>
public MPQ(Stream mpqStream)
{
ArchiveReader = new BinaryReader(mpqStream);
Header = new MPQHeader(ArchiveReader.ReadBytes((int)PeekHeaderSize()));
// Seek to the hash table and load it
ArchiveReader.BaseStream.Position = (long)Header.GetHashTableOffset();
byte[] hashTableData;
if (Header.IsHashTableCompressed())
{
byte[] encryptedData = ArchiveReader.ReadBytes((int)Header.GetCompressedHashTableSize());
byte[] decryptedData = MPQCrypt.DecryptData(encryptedData, HashTable.TableKey);
BlockFlags tableFlags = BlockFlags.IsCompressedMultiple;
hashTableData = Compression.DecompressSector(decryptedData, tableFlags);
}
else
{
byte[] encryptedData = ArchiveReader.ReadBytes((int)Header.GetHashTableSize());
hashTableData = MPQCrypt.DecryptData(encryptedData, HashTable.TableKey);
}
ArchiveHashTable = new HashTable(hashTableData);
// Seek to the block table and load it
ArchiveReader.BaseStream.Position = (long)Header.GetBlockTableOffset();
byte[] blockTableData;
if (Header.IsBlockTableCompressed())
{
byte[] encryptedData = ArchiveReader.ReadBytes((int)Header.GetCompressedBlockTableSize());
byte[] decryptedData = MPQCrypt.DecryptData(encryptedData, BlockTable.TableKey);
BlockFlags tableFlags = BlockFlags.IsCompressedMultiple;
blockTableData = Compression.DecompressSector(decryptedData, tableFlags);
}
else
{
byte[] encryptedData = ArchiveReader.ReadBytes((int)Header.GetBlockTableSize());
blockTableData = MPQCrypt.DecryptData(encryptedData, BlockTable.TableKey);
}
ArchiveBlockTable = new BlockTable(blockTableData);
// TODO: Seek to the extended hash table and load it
// TODO: Seek to the extended block table and load it
if (Header.GetFormat() >= MPQFormat.ExtendedV1)
{
// Seek to the extended block table and load it, if neccesary
if (Header.GetExtendedBlockTableOffset() <= 0)
{
return;
}
ArchiveReader.BaseStream.Position = (long)Header.GetExtendedBlockTableOffset();
for (int i = 0; i < Header.GetBlockTableEntryCount(); ++i)
{
ExtendedBlockTable.Add(ArchiveReader.ReadUInt16());
}
}
}
