/// <summary>
/// Returns a deep copy of the resource table
/// </summary>
public ResourceTableEntry[] GetResourceTableCopy()
{
if (Table == null)
{
return(null);
}
ResourceTableEntry[] result = new ResourceTableEntry[Table.Length];
for (int i = 0; i < Table.Length; i++)
{
result[i] = new ResourceTableEntry();
result[i].ID = Table[i].ID;
result[i].Flags = Table[i].Flags;
result[i].Offset = Table[i].Offset;
result[i].Size = Table[i].Size;
result[i].Type = Table[i].Type;
result[i].Name = Table[i].Name;
}
return(result);
}
/// <summary>
/// Returns Resource entry as indexed by its ID (not the index in the file).
///
/// Returns a cached version if one exists.
/// </summary>
/// <param name="ID">Resource ID</param>
/// <returns></returns>
public ResourceEntry this[int ID]
{
get
{
if (CachedResources.ContainsKey(ID))
{
return(CachedResources[ID]);
}
if (TableIDLookup.ContainsKey(ID) == false)
{
return(null);
}
using (BinaryReader reader = new BinaryReader(File.OpenRead(Filename)))
{
ResourceTableEntry tableEntry = Table[TableIDLookup[ID]];
ResourceEntry entry = new ResourceEntry();
entry.ID = tableEntry.ID;
entry.Type = tableEntry.Type;
reader.BaseStream.Seek(tableEntry.Offset, SeekOrigin.Begin);
entry.Data = reader.ReadBytes(tableEntry.Size);
entry.Name = tableEntry.Name;
if (ShouldCache)
{
CachedResources.Add(tableEntry.ID, entry);
}
return(entry);
}
}
}
/// <summary>
/// Opens a biff file and reads the header and resource table information
/// </summary>
/// <param name="filename"></param>
/// <param name="keyfile">Can be null</param>
public BiffFile(string filename, string keyfilename)
{
Filename = filename;
TableIDLookup = new Dictionary <int, int>();
CachedResources = new Dictionary <int, ResourceEntry>();
Header = new BiffFileHeader();
Header.Signature = "UNKW";
Header.Version = "";
Header.ResCount = 0;
Header.ResTableOffset = 0;
Table = null;
KeyFile keyFile = new KeyFile(keyfilename);
biffEntry = keyFile.GetBiffFileEntry(Path.GetFileName(filename));
using (BinaryReader reader = new BinaryReader(File.OpenRead(filename)))
{
if (reader.BaseStream.Length < 8)
{
throw new Exception("File is not a BIFF V1.1 file (file is too short)");
}
// Read Header
Header.Signature = new string(reader.ReadChars(4));
Header.Version = new string(reader.ReadChars(4));
if (Header.Signature != "BIFF" && Header.Version != "V1.1")
{
throw new Exception("File is not a BIFF V1.1 file (according to header)");
}
Header.ResCount = reader.ReadInt32();
reader.ReadInt32(); // NULL
Header.ResTableOffset = reader.ReadInt32();
// Read Resource Table
Table = new ResourceTableEntry[Header.ResCount];
reader.BaseStream.Seek(Header.ResTableOffset, SeekOrigin.Begin);
for (int i = 0; i < Header.ResCount; i++)
{
Table[i] = new ResourceTableEntry();
Table[i].ID = reader.ReadInt32();
Table[i].Flags = reader.ReadInt32();
Table[i].Offset = reader.ReadInt32();
Table[i].Size = reader.ReadInt32();
Table[i].Type = (ResourceType)reader.ReadInt16();
Table[i].Name = Table[i].ID.ToString();
if (biffEntry != null && biffEntry.ResourceNames.ContainsKey(Table[i].ID))
{
Table[i].Name = biffEntry.ResourceNames[Table[i].ID];
}
Table[i].Name += "." + Table[i].Type;
reader.ReadInt16(); // NULL
TableIDLookup.Add(Table[i].ID, i);
}
}
}
