initial commit

src/main.rs

@@ -0,0 +1,61 @@
+mod cli;
+mod controllers;
+
+use std::process::exit;
+
+use exitcode;
+
+use controllers::{Controller, LinController, LogController, RawController};
+
+fn main() {
+    let matches = cli::parse_args();
+
+    let (default_ctrl, ctrls) = controllers::get_controllers();
+
+    let p = ctrls.get(&default_ctrl).unwrap().to_owned();
+    let controller: Box<dyn Controller> = match matches.value_of("ctrl_type") {
+        Some("raw") => Box::new(RawController::new(p)),
+        Some("lin") => Box::new(LinController::new(p)),
+        Some("log") => Box::new(LogController::new(p)),
+        Some(_) | None => panic!(ERROR_MSG),
+    };
+
+    if matches.is_present("list") {
+        for ctrl in ctrls.keys() {
+            println!("{}", ctrl);
+        }
+        exit(exitcode::OK);
+    } else if let Some(value) = matches.value_of("set") {
+        let new_value = value.parse::<i32>().unwrap();
+        controller.set_brightness(new_value);
+    } else if let Some(value) = matches.value_of("inc") {
+        let new_value = controller.get_brightness() + value.parse::<i32>().unwrap();
+        controller.set_brightness(new_value.min(controller.get_max_brightness()));
+    } else if let Some(value) = matches.value_of("dec") {
+        let new_value = controller.get_brightness() - value.parse::<i32>().unwrap();
+        controller.set_brightness(new_value.max(0));
+    } else if matches.is_present("get") {
+        println!("{}", controller.get_brightness());
+    } else if matches.is_present("zer") {
+        controller.set_brightness(0);
+    } else if matches.is_present("ful") {
+        controller.set_brightness(controller.get_max_brightness());
+    } else {
+        panic!(ERROR_MSG);
+    }
+
+    exit(exitcode::OK);
+}
+
+// https://xkcd.com/2200/
+const ERROR_MSG: &str = r#"
+    ERROR!
+
+    If you're seeing this, the code is in what I thought was an unreachable state.
+
+    I could give you advice for what to do. but honestly, why should you trust me?
+    I clearly screwed this up. I'm writing a message that should never appear,
+    yet I know it will probably appear someday.
+
+    On a deep level, I know I'm not up to this task. I'm so sorry.
+"#;