lwa_unity_unpack/src/unpacker.rs

147 lines
5.0 KiB
Rust

use crate::asset::Asset;
use flate2::read::GzDecoder;
use hashbrown::HashMap;
use rayon::prelude::*;
use std::ffi::OsStr;
use std::fs::File;
use std::io::BufRead;
use std::io::BufReader;
use std::path::{Path, PathBuf};
use std::process::Command;
use std::sync::mpsc::channel;
use std::sync::Arc;
use std::{fs, io};
use tar::Archive;
#[derive(Clone)]
pub struct Unpacker {
pub args: crate::args::Args,
}
impl Unpacker {
pub fn prepare_environment(&self) {
let archive_path = Path::new(&self.args.input);
let output_dir = Path::new(&self.args.output);
let tmp_path = Path::new("./tmp_dir");
if !archive_path.exists() {
panic!("Input file does not exits");
}
if tmp_path.exists() {
println!("Temp directory exits, cleaning up first.");
fs::remove_dir_all(tmp_path).unwrap();
}
if output_dir.exists() {
println!("Output directory exits, cleaning up first.");
fs::remove_dir_all(output_dir).unwrap();
}
}
pub fn process_data(&self) {
let archive_path = Path::new(&self.args.input);
let output_dir = Path::new(&self.args.output);
let tmp_path = Path::new("./tmp_dir");
if let Err(e) = Unpacker::extract_archive(archive_path, tmp_path) {
println!("Failed to extract archive: {}", e);
}
let (sender, receiver) = channel();
let ignored_extensions = self.args.clone().ignore_extensions.unwrap_or_default();
fs::read_dir(tmp_path)
.unwrap()
.par_bridge()
.for_each_with(sender, |s, entry| {
let entry = entry.unwrap();
let asset = crate::asset::Asset::from_path(&entry);
if let Some(asset) = asset {
let extension = &asset.extension.clone().unwrap_or_default();
if !ignored_extensions.contains(extension) {
s.send(asset).unwrap();
}
}
});
let tmp_dir = Arc::new(tmp_path);
fs::create_dir(output_dir).unwrap();
let output_dir = Arc::new(output_dir);
let mapping: Vec<Asset> = receiver.iter().collect();
let mapping_arc = Arc::new(mapping);
mapping_arc.par_iter().for_each(|(asset)| {
let asset_hash = &asset.hash;
let path = Path::new(&asset.path_name);
let source_asset = Path::new(&*tmp_dir).join(asset_hash).join("asset");
let result_path = output_dir.join(path);
process_directory(asset_hash, &asset.path_name, &result_path);
check_source_asset_exists(&source_asset);
if self.args.fbx_to_gltf.is_some() {
if let Some("fbx") = path.extension().and_then(OsStr::to_str) {
process_fbx_file(
&source_asset,
&result_path,
&self.args.fbx_to_gltf.clone().unwrap(),
);
return;
}
}
process_non_fbx_file(&source_asset, &result_path);
});
fs::remove_dir_all(Path::new(&*tmp_dir)).unwrap();
fn process_directory(asset_hash: &str, asset_path: &str, result_path: &Path) {
println!("{}: {:?}", asset_hash, asset_path);
let result_dir = result_path.parent().unwrap();
if !result_dir.exists() {
fs::create_dir_all(result_dir).unwrap();
}
}
fn check_source_asset_exists(source_asset: &Path) {
if !source_asset.exists() {
panic!("SOURCE ASSET DOES NOT EXIST: {}", source_asset.display());
}
}
fn process_fbx_file(source_asset: &Path, result_path: &Path, tool: &PathBuf) {
let out_path = result_path.with_extension("");
println!(
"{:?}",
&[
"--input",
source_asset.to_str().unwrap(),
"--output",
out_path.to_str().unwrap()
]
);
let output = Command::new(tool)
.args([
"--input",
source_asset.to_str().unwrap(),
"-b",
"--output",
out_path.to_str().unwrap(),
])
.output()
.unwrap();
let output_result = String::from_utf8_lossy(&output.stdout);
println!("output: {}", output_result);
}
fn process_non_fbx_file(source_asset: &Path, result_path: &Path) {
fs::rename(source_asset, result_path).unwrap();
}
}
fn extract_archive(archive_path: &Path, extract_to: &Path) -> io::Result<()> {
let tar_gz = File::open(archive_path)?;
let tar = GzDecoder::new(tar_gz);
let mut archive = Archive::new(tar);
archive.unpack(extract_to)?;
Ok(())
}
}