/// <summary>
/// Initializes a new instance of the <see cref="Warcraft.MPQ.MPQ"/> class.
/// This constructor creates an empty archive.
/// </summary>
/// <param name="inFormat">In format.</param>
public MPQ(MPQFormat inFormat)
{
if (inFormat > MPQFormat.ExtendedV1)
{
throw new NotImplementedException();
}
this.Header = new MPQHeader(inFormat);
this.ArchiveHashTable = new HashTable();
this.ArchiveBlockTable = new BlockTable();
}
/// <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>
/// Releases all resource used by the <see cref="Warcraft.MPQ.MPQ"/> object.
/// </summary>
/// <remarks>Call <see cref="Dispose"/> when you are finished using the <see cref="Warcraft.MPQ.MPQ"/>. The <see cref="Dispose"/>
/// method leaves the <see cref="Warcraft.MPQ.MPQ"/> in an unusable state. After calling <see cref="Dispose"/>, you must
/// release all references to the <see cref="Warcraft.MPQ.MPQ"/> so the garbage collector can reclaim the memory that
/// the <see cref="Warcraft.MPQ.MPQ"/> was occupying.</remarks>
public void Dispose()
{
this.Header = null;
this.ArchiveHashTable = null;
this.ArchiveBlockTable = null;
if (this.ExtendedBlockTable.Count > 0)
{
this.ExtendedBlockTable.Clear();
}
if (this.ExternalListfile.Count > 0)
{
this.ExternalListfile.Clear();
}
if (this.ArchiveReader != null)
{
this.ArchiveReader.Close();
this.ArchiveReader.Dispose();
}
this.IsDisposed = true;
}
/// <inheritdoc />
public void Dispose()
{
Header = null;
ArchiveHashTable = null;
ArchiveBlockTable = null;
if (ExtendedBlockTable.Count > 0)
{
ExtendedBlockTable.Clear();
}
if (ExternalListfile.Count > 0)
{
ExternalListfile.Clear();
}
if (ArchiveReader != null)
{
ArchiveReader.Close();
ArchiveReader.Dispose();
}
IsDisposed = true;
}
/// <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)
{
this.ArchiveReader = new BinaryReader(mpqStream);
this.Header = new MPQHeader(this.ArchiveReader.ReadBytes((int)PeekHeaderSize()));
// Seek to the hash table and load it
this.ArchiveReader.BaseStream.Position = (long)this.Header.GetHashTableOffset();
byte[] hashTableData;
if (this.Header.IsHashTableCompressed())
{
byte[] encryptedData = this.ArchiveReader.ReadBytes((int)this.Header.GetCompressedHashTableSize());
byte[] decryptedData = MPQCrypt.DecryptData(encryptedData, HashTable.TableKey);
BlockFlags tableFlags = BlockFlags.IsCompressedMultiple;
hashTableData = Compression.DecompressSector(decryptedData, tableFlags);
}
else
{
byte[] encryptedData = this.ArchiveReader.ReadBytes((int)this.Header.GetHashTableSize());
hashTableData = MPQCrypt.DecryptData(encryptedData, HashTable.TableKey);
}
this.ArchiveHashTable = new HashTable(hashTableData);
// Seek to the block table and load it
this.ArchiveReader.BaseStream.Position = (long)this.Header.GetBlockTableOffset();
byte[] blockTableData;
if (this.Header.IsBlockTableCompressed())
{
byte[] encryptedData = this.ArchiveReader.ReadBytes((int)this.Header.GetCompressedBlockTableSize());
byte[] decryptedData = MPQCrypt.DecryptData(encryptedData, BlockTable.TableKey);
BlockFlags tableFlags = BlockFlags.IsCompressedMultiple;
blockTableData = Compression.DecompressSector(decryptedData, tableFlags);
}
else
{
byte[] encryptedData = this.ArchiveReader.ReadBytes((int)this.Header.GetBlockTableSize());
blockTableData = MPQCrypt.DecryptData(encryptedData, BlockTable.TableKey);
}
this.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 (this.Header.GetFormat() >= MPQFormat.ExtendedV1)
{
// Seek to the extended block table and load it, if neccesary
if (this.Header.GetExtendedBlockTableOffset() > 0)
{
this.ArchiveReader.BaseStream.Position = (long)this.Header.GetExtendedBlockTableOffset();
for (int i = 0; i < this.Header.GetBlockTableEntryCount(); ++i)
{
this.ExtendedBlockTable.Add(this.ArchiveReader.ReadUInt16());
}
}
}
}
