private void SerializeHeader(BBeB book, BBeBinaryWriter writer)
{
BBeBHeader header = book.Header;
TocObject tocObject = (TocObject)book.FindObject((ushort)header.dwTocObjectId);
if (tocObject == null)
{
throw new InvalidBookException("Can't find the TOC object");
}
writer.Write(header.signature);
writer.Write(header.wVersion);
writer.Write(header.wPseudoEncByte);
writer.Write(header.dwRootObjectId);
writer.Write(header.NumberOfObjects);
m_dwIndexOffsetVal = writer.Position;
writer.Write(header.ObjectIndexOffset);
writer.Write(header.dwUnknown1);
writer.Write(header.byBindingDir);
writer.Write(header.byPadding1);
writer.Write(header.wDPI);
writer.Write(header.wPadding2);
writer.Write(header.wScreenWidth);
writer.Write(header.wScreenHeight);
writer.Write(header.byColorDepth);
writer.Write(header.byPadding3);
writer.Write(header.byUnkonwn2);
writer.Write(header.dwTocObjectId);
writer.WriteStreamOffsetReference(tocObject);
// This may seem a little wasteful as we actually serialize the MetaData object twice
// Once here and onces when we actualy write it to the stream, however we need to set
// the compressed size in the header and we can only do it by compressing it first.
// Really we should store the compressed byte stream and just save that out
// but its not very big so the overhead is quite small
{
MemoryStream mem = new MemoryStream();
BinaryWriter sw = new BinaryWriter(mem);
header.wDocInfoCompSize = (ushort)(SerializeMetaData(book.MetaData, sw) + 4);
}
writer.Write(header.wDocInfoCompSize);
Debug.Assert(writer.Position == 0x4E);
if (header.wVersion >= 800)
{
writer.Write(header.wThumbnailFlags);
writer.Write(header.dwThumbSize);
Debug.Assert(writer.Position == 0x54);
}
}
public BBeB Deserialize(Stream bbebStream)
{
BinaryReader reader = new BinaryReader(bbebStream, Encoding.Unicode);
BBeB book = new BBeB();
BBeBHeader header = DeserializeHeader(reader);
header.Validate();
book.Header = header;
book.MetaData = DeserializeMetaData(reader, header.wDocInfoCompSize);
if (header.wVersion >= 800)
{
book.ThumbnailData = reader.ReadBytes((int)header.dwThumbSize);
}
// See http://www.sven.de/librie/Librie/LrfFormat for more information on this table.
const ulong k_dwObjTableElementSize = 4 * sizeof(uint);
ulong nTotalSize = 0;
BBeBObjectFactory objFactory = new BBeBObjectFactory();
Debug.WriteLineIf(s_bDebugMode, "File contains " + header.NumberOfObjects + " objects");
for (ulong idxObj = 0; idxObj < header.NumberOfObjects; idxObj++)
{
reader.BaseStream.Seek((long)(header.ObjectIndexOffset + idxObj * k_dwObjTableElementSize),
SeekOrigin.Begin);
uint id = reader.ReadUInt32();
uint offset = reader.ReadUInt32();
uint size = reader.ReadUInt32();
nTotalSize += size;
reader.BaseStream.Seek(offset, SeekOrigin.Begin);
book.Objects.Add(objFactory.CreateObject(reader, id, size));
}
Debug.WriteLineIf(s_bDebugMode, "Total size: " + nTotalSize);
ConnectObjects(book);
return(book);
}
private BBeBHeader DeserializeHeader(BinaryReader reader)
{
Debug.WriteLineIf(s_bDebugMode, "Reading header");
BBeBHeader header = new BBeBHeader();
header.signature = reader.ReadChars(4);
header.wVersion = reader.ReadUInt16();
header.wPseudoEncByte = reader.ReadUInt16();
header.dwRootObjectId = reader.ReadUInt32();
header.NumberOfObjects = reader.ReadUInt64();
header.ObjectIndexOffset = reader.ReadUInt64();
header.dwUnknown1 = reader.ReadUInt32();
header.byBindingDir = reader.ReadByte();
header.byPadding1 = reader.ReadByte();
header.wDPI = reader.ReadUInt16();
header.wPadding2 = reader.ReadUInt16();
header.wScreenWidth = reader.ReadUInt16();
header.wScreenHeight = reader.ReadUInt16();
header.byColorDepth = reader.ReadByte();
header.byPadding3 = reader.ReadByte();
header.byUnkonwn2 = reader.ReadBytes(0x14);
header.dwTocObjectId = reader.ReadUInt32();
header.dwTocObjectOffset = reader.ReadUInt32();
header.wDocInfoCompSize = reader.ReadUInt16();
Debug.Assert(reader.BaseStream.Position == 0x4E);
if (header.wVersion >= 800)
{
header.wThumbnailFlags = reader.ReadUInt16();
header.dwThumbSize = reader.ReadUInt32();
Debug.Assert(reader.BaseStream.Position == 0x54);
}
// Set the TextObject EncodingBytes (temporary hack)
StreamTagSerializer.EncodingByte = header.wPseudoEncByte;
return(header);
}
