ModFileCore

TmodFile tmf = new TmodFile(path);
using (tmf.Open()) 
{
    // tmf.Upgrade();
    // tmf.Downgrade();
    tmf.ReplaceFile("Windows.dll", data);
}
tmf.Save("new.tmod");

Able to load tmod files of all versions, and can upgrade or downgrade tmod file.

Getting files

TmodFile tmf = new TmodFile(file);
byte[] data;
using (tmf.Open())
{
    data = tmf.GetTrueBytes("Name");
}

GetTrueBytes gets the bytes after decompression, and GetRawBytes gets the bytes before decompression.

Replacing files

TmodFile tmf = new TmodFile(file);
byte[] data = new byte[999];  // some data
using (tmf.Open())
{
    data = tmf.ReplaceFile("Name", data);
}

Saving tmod file

tmf.Save();

If ModLoader version of the tmod file is less than 0.11, then automatically saves to the old format, and vice versa.

Upgrade tmod file

TmodFile tmf = new TmodFile(file);
using (tmf.Open())
{
    tmf.Upgrade();
}
tmf.Save("New.tmod");

Downgrade tmod file