public void WriteToStream(Stream stream)
{
if (stream == BaseStream)
{
throw new InvalidOperationException("Cannot overwrite the same stream.");
}
using (var bw = new BinaryWriterEx(stream, true))
{
bw.DefaultEndian = Endianness.BigEndian;
var header = LIFFHeader.Default;
bw.WriteStruct(header);
long rootBlockPos = stream.Position;
var rootBlock = new LIFFBlock
{
BlockHeader = 1,
BlockType = 1,
};
bw.WriteStruct(rootBlock);
var contentBlock = new LIFFBlock
{
BlockHeader = 1,
BlockType = 2,
Spacing2 = 1,
BlockSize = 26
};
bw.WriteStruct(contentBlock);
bw.WriteInt16(1);
bw.WriteInt32(0);
WriteFolderBlocks(bw, RootFolder);
long hierarchyBlockPos = stream.Position;
var hierarchyBlock = new LIFFBlock
{
BlockHeader = 1,
BlockType = 5,
Spacing2 = 1
};
bw.WriteStruct(hierarchyBlock);
WriteFolderEntries(bw, RootFolder);
hierarchyBlock.BlockSize = (int)(stream.Position - hierarchyBlockPos);
stream.Position = hierarchyBlockPos;
bw.WriteStruct(hierarchyBlock);
rootBlock.BlockSize = (int)(stream.Length - rootBlockPos);
stream.Position = rootBlockPos;
bw.WriteStruct(rootBlock);
header.FileSize = (int)stream.Length;
stream.Position = 0;
bw.WriteStruct(header);
}
}
private void WriteFolderBlocks(BinaryWriterEx bw, FolderEntry folder)
{
var allChilds = folder.GetEntryHierarchy().ToList();
var totalFilesSize = allChilds.OfType <FileEntry>().Sum(x => x.FileSize);
var folderBlock = new LIFFBlock
{
BlockHeader = 1,
BlockType = 3,
BlockSize = ((allChilds.Count() + 1) * LIFFBLOCK_SIZE) + (int)totalFilesSize
};
bw.WriteStruct(folderBlock);
foreach (var entry in folder.Entries.OrderBy(x => x.Name))
{
if (entry is FileEntry file)
{
var fileBlock = new LIFFBlock
{
BlockHeader = 1,
BlockType = 4,
Spacing2 = 1,
BlockSize = LIFFBLOCK_SIZE + (int)file.FileSize
};
bw.WriteStruct(fileBlock);
var fileStream = file.GetStream();
//fileStream.CopyTo(bw.BaseStream, 4096);
byte[] buffer = new byte[4096];
int bytesRead = 0;
while (bytesRead < file.FileSize)
{
int b = fileStream.Read(buffer, 0, buffer.Length);
bytesRead += b;
bw.Write(buffer, 0, b);
if (b == 0)
{
break;
}
}
}
else
{
WriteFolderBlocks(bw, (FolderEntry)entry);
}
}
}
public BlockHierarchy(LIFFBlock block, long positionInStream)
{
Block = block;
PositionInStream = positionInStream;
Childs = new List <BlockHierarchy>();
}
