public void uncomress(EndiannessAwareBinaryReader reader, BinaryWriter writer, Int32 size)
{
bool accurate = true;
SevenZip.Compression.LZMA.Decoder coder = new SevenZip.Compression.LZMA.Decoder();
Int64 begin = writer.BaseStream.Position;
Int32 shift_back = version == 12 ? 7 : 9;
Int32 uncompressed_size = version == 12 ? 0x100000 : 0x8000;
Int32 properties_value = version == 12 ? 171 : 93;
while (writer.BaseStream.Position - begin < size)
{
Int32 chunk_size = 0;
if (!accurate)
{
chunk_size = reader.ReadInt32();
}
else
{
chunk_size = (Int32)round((UInt32)reader.ReadInt32()) - shift_back;
}
byte[] properties = reader.ReadBytes(5);
if (properties[0] != properties_value || BitConverter.ToInt32(properties, 1) != uncompressed_size)
{
reader.BaseStream.Position -= shift_back;
writer.Write(reader.ReadBytes(uncompressed_size));
}
else
{
coder.SetDecoderProperties(properties);
coder.Code(reader.BaseStream, writer.BaseStream, chunk_size, Math.Min(uncompressed_size, size - (writer.BaseStream.Position - begin)), null);
writer.Write(reader.ReadBytes((int)(round((UInt32)reader.BaseStream.Position) - reader.BaseStream.Position)));
}
}
}
public IGA(String path, EndiannessAwareBinaryReader.Endianness endianness)
{
FileStream iga_file = new FileStream(path, FileMode.Open, FileAccess.Read);
EndiannessAwareBinaryReader reader = new EndiannessAwareBinaryReader(iga_file, endianness);
signature = reader.ReadInt32();
version = reader.ReadInt32();
info_size = reader.ReadInt32();
files_count = reader.ReadInt32();
chunk_size = reader.ReadInt32();
magic_number1 = reader.ReadInt32();
magic_number2 = reader.ReadInt32();
zero1 = reader.ReadInt32();
table1_size = reader.ReadInt32();
table2_size = reader.ReadInt32();
if (version == 11 || version == 10) //Skylanders SuperChargers WiiU Big Endian
{
zero2 = reader.ReadInt32();
names_offset = reader.ReadUInt32();
}
else
{
names_offset = reader.ReadUInt32();
zero2 = reader.ReadInt32();
}
names_size = reader.ReadInt32();
one = reader.ReadInt32();
for (int i = 0; i < files_count; ++i)
{
file.Add(new File());
file[i].setID(reader.ReadInt32());
file[i].setSource(path);
}
for (int i = 0; i < files_count; ++i)
{
if (version == 11 || version == 10)
{
file[i].setOrdinal(reader.ReadInt32());
file[i].setOffset(reader.ReadUInt32());
}
else
{
file[i].setOffset(reader.ReadUInt32());
file[i].setOrdinal(reader.ReadInt32());
}
file[i].setSize(reader.ReadInt32());
file[i].setCompression(reader.ReadInt32());
file[i].setSourceOffset(file[i].getOffset());
}
for (int i = 0; i < table1_size; ++i)
{
mc_table.Add(reader.ReadUInt16());
}
for (int i = 0; i < table2_size / 2; ++i)
{
sc_table.Add(reader.ReadUInt16());
}
//Size: 920944
//Ordinal: 606208
// max: 33 499
reader.BaseStream.Position = names_offset;
Int32[] name_offsets = new Int32[files_count];
for (int i = 0; i < files_count; ++i)
{
name_offsets[i] = reader.ReadInt32();
}
for (int i = 0; i < files_count; ++i)
{
reader.BaseStream.Position = names_offset + name_offsets[i];
if (version == 10)
{
String rel_name = "";
rel_name = readString(reader);
file[i].setFullName(rel_name);
file[i].setRelName(rel_name);
}
else
{
String full_name = ""; String rel_name = "";
full_name = readString(reader);
rel_name = readString(reader);
file[i].setFullName(full_name);
file[i].setRelName(rel_name);
}
}
reader.Close();
}