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path: root/src/bin/typegraph.rs
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#![feature(random)]
use std::{
    collections::{BTreeMap, BTreeSet},
    env::args,
    fs::File,
    io::BufReader,
};
use unity_tools::{
    serialized_file::{TypeTreeNode, read_serialized_file},
    unityfs::UnityFS,
};

fn main() -> anyhow::Result<()> {
    env_logger::init_from_env("LOG");
    let file = BufReader::new(File::open(args().nth(1).unwrap())?);
    let mut fs = UnityFS::open(file)?;
    let filter_prims = args().any(|a| a == "no_primitives");

    let mut edges = BTreeSet::new();
    for node in fs.nodes().to_vec() {
        if node.name.ends_with(".resource") || node.name.ends_with(".resS") {
            continue;
        }
        let mut cab = fs.read(&node)?;
        let file = read_serialized_file(&mut cab)?;

        for ob in file.objects {
            let typetree = if ob.type_id < 0 {
                unimplemented!()
            } else {
                &file.types[ob.type_id as usize]
            };
            fn print_types(
                edges: &mut BTreeSet<(String, String)>,
                filter_prims: bool,
                tt: TypeTreeNode,
            ) {
                for c in tt.children {
                    let mut c = vec![c];
                    loop {
                        let mut nc = Vec::new();
                        let mut f = false;
                        for mut c in c {
                            if let Some(inner) = c.type_string.strip_prefix("PPtr<") {
                                c.type_string = inner.strip_suffix(">").unwrap().to_owned();
                                f = true;
                            } else if matches!(c.type_string.as_str(), "Array" | "pair" | "map") {
                                nc.extend(c.children);
                                f = true
                            } else {
                                nc.push(c);
                            };
                        }
                        c = nc;
                        if !f {
                            break;
                        }
                    }
                    for c in c {
                        if filter_prims && is_primitive(&c.type_string) {
                            continue;
                        }
                        edges.insert((tt.type_string.to_owned(), c.type_string.to_owned()));
                        print_types(edges, filter_prims, c);
                    }
                }
            }

            if let Some(tree) = &typetree.type_tree {
                print_types(&mut edges, filter_prims, tree.clone());
            }
        }
    }
    let nodes = edges
        .iter()
        .flat_map(|(k, v)| [k, v])
        .collect::<BTreeSet<_>>();
    let ids = nodes
        .into_iter()
        .enumerate()
        .map(|(i, n)| (n, i))
        .collect::<BTreeMap<_, _>>();

    println!("digraph {{");
    for (name, id) in &ids {
        println!("t{id} [label={name:?}]");
    }
    for (a, b) in &edges {
        println!("t{} -> t{}", ids[a], ids[b]);
    }
    println!("}}");

    Ok(())
}

fn is_primitive(s: &str) -> bool {
    matches!(
        s,
        "Type*"
            | "int"
            | "unsigned int"
            | "UInt8"
            | "UInt16"
            | "UInt32"
            | "UInt64"
            | "SInt8"
            | "SInt16"
            | "SInt32"
            | "SInt64"
            | "bool"
            | "float"
            | "vector"
            | "string"
            | "float3"
            | "float4"
            | "float2"
            | "Vector2f"
            | "Vector3f"
            | "Vector4f"
            | "Quaternionf"
            | "xform"
    )
}