prepend args with --, -, add short args

README.md

@@ -16,11 +16,18 @@
 
 #### Command line arguments
 
-- Passing ```iw4-sp```, ```iw4x```, ```iw5-mod```, ```iw6-mod``` or ```s1-mod``` as the first argument will skip automatic game detection
-- Passing ```update``` will stop the launcher from launching the game
-- ```skip-launcher-update``` skips launcher self-update
-- ```bonus``` download bonus content
-- ```force``` forces file hash recheck
+- ```iw4-sp```, ```iw4x```, ```iw5-mod```, ```iw6-mod```, ```s1-mod```
+  - Skip automatic detection and launch the specified game
+- ```--update```, ```-u```
+  - Only update the game, don't launch it
+- ```--skip-launcher-update```
+  - Don't update the launcher
+- ```--bonus```
+  - Download bonus content
+- ```--force```, ```-f```
+  - Force file hash recheck
+
+Example: ```alterware-launcher.exe iw4x --bonus -u```
 
 Some arguments can be set in alterware-launcher.json, args generally override the values of the config.
 

src/main.rs

@@ -281,6 +281,26 @@ fn setup_env() {
     });
 }
 
+fn arg_value(args: &[String], arg: &str) -> Option<String> {
+    let val = args.iter()
+        .position(|r| r == arg)
+        .map(|e| args[e + 1].clone());
+    if let Some(ref val) = val {
+        if val.starts_with('-') {
+            return None;
+        }
+    }
+    val
+}
+
+fn arg_bool(args: &[String], arg: &str) -> bool {
+    args.iter().any(|r| r == arg)
+}
+
+fn arg_remove(args: &mut Vec<String>, arg: &str) {
+    args.iter().position(|r| r == arg).map(|e| args.remove(e));
+}
+
 fn main() {
     #[cfg(windows)]
     setup_env();
@@ -288,33 +308,27 @@ fn main() {
     let mut args: Vec<String> = std::env::args().collect();
     let mut cfg = config::load(PathBuf::from("alterware-launcher.json"));
 
-    if args.contains(&String::from("update")) {
-        cfg.update_only = true;
-        args.iter()
-            .position(|r| r == "update")
-            .map(|e| args.remove(e));
-    }
-
-    if !args.contains(&String::from("skip-launcher-update")) && !cfg.skip_self_update {
+    if !arg_bool(&args, "--skip-launcher-update") && !cfg.skip_self_update {
         self_update::run(cfg.update_only);
     } else {
-        args.iter()
-            .position(|r| r == "skip-launcher-update")
-            .map(|e| args.remove(e));
+        arg_remove(&mut args, "--skip-launcher-update");
     }
 
-    if args.contains(&String::from("bonus")) {
+    if arg_bool(&args, "--update") || arg_bool(&args, "-u") {
+        cfg.update_only = true;
+        arg_remove(&mut args, "--update");
+        arg_remove(&mut args, "-u");
+    }
+
+    if arg_bool(&args, "--bonus") {
         cfg.download_bonus_content = true;
-        args.iter()
-            .position(|r| r == "bonus")
-            .map(|e| args.remove(e));
+        arg_remove(&mut args, "--bonus");
     }
 
-    if args.contains(&String::from("force")) {
+    if arg_bool(&args, "--force") || arg_bool(&args, "-f") {
         cfg.force_update = true;
-        args.iter()
-            .position(|r| r == "force")
-            .map(|e| args.remove(e));
+        arg_remove(&mut args, "--force");
+        arg_remove(&mut args, "-f");
     }
 
     let games_json = http::get_body_string(format!("{}/games.json", MASTER).as_str());