public MSCabCompression(Stream stream)
{
this.stream = stream;
var signature = stream.ReadASCII(4);
if (signature != "MSCF")
throw new InvalidDataException("Not a Microsoft CAB package!");
stream.Position += 12;
var filesOffset = stream.ReadUInt32();
stream.Position += 6;
var folderCount = stream.ReadUInt16();
var fileCount = stream.ReadUInt16();
if (stream.ReadUInt16() != 0)
throw new InvalidDataException("Only plain packages (without reserved header space or prev/next archives) are supported!");
stream.Position += 4;
folders = new CabFolder[folderCount];
for (var i = 0; i < folderCount; i++)
{
folders[i] = new CabFolder(stream);
if (folders[i].CompressionType != 1)
throw new InvalidDataException("Compression type is not supported");
}
files = new CabFile[fileCount];
stream.Seek(filesOffset, SeekOrigin.Begin);
for (var i = 0; i < fileCount; i++)
files[i] = new CabFile(stream);
}
public MSCabCompression(Stream stream)
{
this.stream = stream;
var signature = stream.ReadASCII(4);
if (signature != "MSCF")
{
throw new InvalidDataException("Not a Microsoft CAB package!");
}
stream.Position += 12;
var filesOffset = stream.ReadUInt32();
stream.Position += 6;
var folderCount = stream.ReadUInt16();
var fileCount = stream.ReadUInt16();
if (stream.ReadUInt16() != 0)
{
throw new InvalidDataException("Only plain packages (without reserved header space or prev/next archives) are supported!");
}
stream.Position += 4;
folders = new CabFolder[folderCount];
for (var i = 0; i < folderCount; i++)
{
folders[i] = new CabFolder(stream);
if (folders[i].CompressionType != 1)
{
throw new InvalidDataException("Compression type is not supported");
}
}
files = new CabFile[fileCount];
stream.Seek(filesOffset, SeekOrigin.Begin);
for (var i = 0; i < fileCount; i++)
{
files[i] = new CabFile(stream);
}
}