private List <File8> ReadFileList()
{
var containerHeader = FileFormat.ContainerHeader.Read(_reader);
_storageVersion = (int)containerHeader.StorageVer;
var elemsAddrsBuf = BlockReaderStream.ReadDataBlock(_reader);
var addresses = FileFormat.ElementAddress.Parse(elemsAddrsBuf);
var fileList = new List <File8>();
foreach (var address in addresses)
{
if (address.HeaderAddress == FileFormat.V8_FF_SIGNATURE ||
address.Signature != FileFormat.V8_FF_SIGNATURE)
{
continue;
}
_reader.Seek(address.HeaderAddress, SeekOrigin.Begin);
var buf = BlockReaderStream.ReadDataBlock(_reader);
var fileHeader = FileFormat.ElementHeader.Parse(buf);
fileList.Add(new File8(fileHeader, address.DataAddress));
}
return(fileList);
}
/// <summary>
/// Считывает текущий блок данных из восьмофайла.
/// </summary>
/// <returns>Считанные данные.</returns>
/// <param name="reader">Входящий поток.</param>
public static byte[] ReadDataBlock(Stream reader)
{
var blockReader = new BlockReaderStream(reader);
var buf = new byte[blockReader.Length];
blockReader.Read(buf, 0, buf.Length);
return(buf);
}
public void Extract(File8 element, string destDir, bool recursiveUnpack = false)
{
if (!Directory.Exists(destDir))
{
Directory.CreateDirectory(destDir);
}
_reader.Seek(element.DataOffset, SeekOrigin.Begin);
Stream fileExtractor;
var blockExtractor = new BlockReaderStream(_reader);
if (blockExtractor.IsPacked && _dataPacked)
{
fileExtractor = new DeflateStream(blockExtractor, CompressionMode.Decompress);
}
else
{
fileExtractor = blockExtractor;
}
if (blockExtractor.IsContainer && recursiveUnpack)
{
string outputDirectory = Path.Combine(destDir, element.Name);
var tmpData = new MemoryStream(); // TODO: переделать MemoryStream --> FileStream
fileExtractor.CopyTo(tmpData);
tmpData.Seek(0, SeekOrigin.Begin);
var internalContainer = new File8Reader(tmpData, dataPacked: false);
internalContainer.ExtractAll(outputDirectory, recursiveUnpack);
return;
}
// Просто файл
string outputFileName = Path.Combine(destDir, element.Name);
using (var outputFile = new FileStream(outputFileName, FileMode.Create))
{
fileExtractor.CopyTo(outputFile);
}
}
