/// <inheritdoc />
public bool TryGetFileInfo(string filePath, out MPQFileInfo fileInfo)
{
fileInfo = null;
if (!ArchiveHashTable.TryFindEntry(filePath, out var hashEntry))
{
return(false);
}
var blockEntry = ArchiveBlockTable.GetEntry((int)hashEntry.GetBlockEntryIndex());
if (HasFileAttributes())
{
fileInfo = new MPQFileInfo(filePath, hashEntry, blockEntry);
}
else
{
fileInfo = new MPQFileInfo
(
filePath,
hashEntry,
blockEntry,
_fileAttributes.FileAttributes[(int)hashEntry.GetBlockEntryIndex()]
);
}
return(true);
}
public bool TryExtractFile(string filePath, [NotNullWhen(true)] out byte[]?data)
{
ThrowIfDisposed();
data = null;
// Reset all positions to be safe
_archiveReader.BaseStream.Position = 0;
if (!ArchiveHashTable.TryFindEntry(filePath, out var fileHashEntry))
{
return(false);
}
var fileBlockEntry = ArchiveBlockTable.GetEntry((int)fileHashEntry.GetBlockEntryIndex());
// Drop out if the file has been deleted
if (fileBlockEntry.IsDeleted())
{
return(false);
}
// Seek to the beginning of the file's sectors
long adjustedBlockOffset;
if (Header.GetFormat() == MPQFormat.ExtendedV1 && RequiresExtendedFormat())
{
var upperOffsetBits = ExtendedBlockTable ![(int)fileHashEntry.GetBlockEntryIndex()];
public byte[] ExtractFile(string filePath)
{
ThrowIfDisposed();
if (!TryExtractFile(filePath, out var data))
{
if (!ArchiveHashTable.TryFindEntry(filePath, out var fileHashEntry))
{
throw new FileNotFoundException("No file found at the given path.", filePath);
}
var fileBlockEntry = ArchiveBlockTable.GetEntry((int)fileHashEntry.GetBlockEntryIndex());
if (fileBlockEntry.IsDeleted())
{
throw new FileDeletedException("The given file is deleted.", filePath);
}
throw new IOException("An unknown failure prevented the file from being extracted.");
}
return(data);
}
public bool TryExtractFile(string filePath, out byte[] data)
{
ThrowIfDisposed();
data = null;
// Reset all positions to be safe
_archiveReader.BaseStream.Position = 0;
if (!ArchiveHashTable.TryFindEntry(filePath, out var fileHashEntry))
{
return(false);
}
var fileBlockEntry = ArchiveBlockTable.GetEntry((int)fileHashEntry.GetBlockEntryIndex());
// Drop out if the file has been deleted
if (fileBlockEntry.IsDeleted())
{
return(false);
}
// Seek to the beginning of the file's sectors
long adjustedBlockOffset;
if (Header.GetFormat() == MPQFormat.ExtendedV1 && RequiresExtendedFormat())
{
var upperOffsetBits = ExtendedBlockTable[(int)fileHashEntry.GetBlockEntryIndex()];
adjustedBlockOffset = (long)fileBlockEntry.GetExtendedBlockOffset(upperOffsetBits);
}
else
{
adjustedBlockOffset = fileBlockEntry.GetBlockOffset();
}
_archiveReader.BaseStream.Position = adjustedBlockOffset;
// Calculate the decryption key if necessary
var fileKey = MPQCrypt.CreateFileEncryptionKey
(
filePath,
fileBlockEntry.ShouldEncryptionKeyBeAdjusted(),
adjustedBlockOffset,
fileBlockEntry.GetFileSize()
);
// Examine the file storage types and extract as necessary
if (fileBlockEntry.IsSingleUnit())
{
data = ExtractSingleUnitFile(fileBlockEntry, fileKey);
return(true);
}
if (fileBlockEntry.IsCompressed())
{
data = ExtractCompressedSectoredFile(fileBlockEntry, fileKey, adjustedBlockOffset);
return(true);
}
data = ExtractUncompressedSectoredFile(fileBlockEntry, fileKey);
return(true);
}
