Added this wad.rs thingy

It'll hopefully let me get into more rust AND doom stuff

Cargo.toml

@@ -6,6 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+bincode = "1.3.3"
 directories = "5.0.1"
 eframe = "0.21.3"
 native-dialog = "0.6.3"

src/infos.rs

@@ -34,26 +34,26 @@ impl CommandManager {
     }
     pub fn remove_iwad(&mut self) {
         self.iwad = None;
-        self.generate_command_str();
+        let _ = self.generate_command_str();
     }
     pub fn add_iwad(&mut self, iwad: &WadInfo) {
         self.iwad = Some(iwad.path.clone());
-        self.generate_command_str();
+        let _ = self.generate_command_str();
     }
     pub fn add_pwads(&mut self, pwads: &Vec<&WadInfo>) {
         self.pwads = Vec::new();
         for pwad in pwads {
             self.pwads.push(pwad.path.clone());
-            self.generate_command_str();
         }
+        let _ = self.generate_command_str();
     }
     pub fn add_launcher(&mut self, launcher: &LauncherInfo) {
         self.launcher = Some(launcher.path.clone());
-        self.generate_command_str();
+        let _ = self.generate_command_str();
     }
     pub fn remove_launcher(&mut self) {
         self.launcher = None;
-        self.generate_command_str();
+        let _ = self.generate_command_str();
     }
     pub fn generate_command(&self) -> Result<(String, Vec<String>), CommandErrors> {
         let launcher = if let Some(launcher) = &self.launcher {

src/main.rs

@@ -8,6 +8,7 @@ use std::process::Command;
 
 pub mod config;
 pub mod infos;
+pub mod wad;
 
 fn main() -> Result<(), eframe::Error> {
     let gui_options = eframe::NativeOptions {

src/wad.rs

@@ -0,0 +1,32 @@
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::BufReader;
+use bincode;
+use serde::Deserialize;
+
+#[derive(Deserialize, Debug)]
+pub struct WadHeader {
+    pub identifier: [u8; 4],
+    pub num_lumps: i32,
+    pub file_offset_to_start: i32,
+}
+
+pub fn open_wad(path: &PathBuf) -> WadHeader {
+    let mut file =  BufReader::new(File::open(path).unwrap());
+    let header: WadHeader = bincode::deserialize_from(&mut file).unwrap();
+
+
+    header
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_open_wad() {
+        let freedoom_iwad = PathBuf::from("freedoom1.wad");
+        let ow = open_wad(&freedoom_iwad);
+        assert_eq!(std::str::from_utf8(&ow.identifier).unwrap(), "IWAD");
+    }
+}