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# CK3 Save

CK3 Save is a library to ergonomically work with Crusader Kings III (CK3) saves (ironman + regular).

```rust
use ck3save::{
    models::{Gamestate, HeaderBorrowed},
    Ck3File, Encoding, EnvTokens,
};

let data = std::fs::read("assets/saves/Jarl_Ivar_of_the_Isles_867_01_01.ck3")?;
let file = Ck3File::from_slice(&data)?;
assert_eq!(file.encoding(), Encoding::TextZip);

let meta = file.parse_metadata()?;
let header: HeaderBorrowed = meta.deserializer().build(&EnvTokens)?;

let mut zip_sink = Vec::new();
let parsed_file = file.parse(&mut zip_sink)?;
let save: Gamestate = parsed_file.deserializer().build(&EnvTokens)?;
assert_eq!(save.meta_data.version, String::from("1.0.2"));
assert_eq!(header.meta_data.version, String::from("1.0.2"));
```

## Ironman

By default, ironman saves will not be decoded properly.

To enable support, one must supply an environment variable
(`CK3_IRONMAN_TOKENS`) that points to a newline delimited
text file of token descriptions. For instance:

```ignore
0xffff my_test_token
0xeeee my_test_token2
```

In order to comply with legal restrictions, I cannot share the list of
tokens. I am also restricted from divulging how the list of tokens can be derived.