Migrate to clap 3, create error macro, solve clippy lints

and more

Cargo.toml

@@ -12,8 +12,8 @@ keywords = ["razer", "mouse", "mice", "deathadder", "hardware"]
 [dependencies]
 libc = "0.2"
 nix = "0.8.1"
-clap = { version = "2.33.1", features = ["wrap_help"] }
 libudev = { git = "https://github.com/9ary/libudev-rs", rev = "cf7dd72" }
+clap = { version = "3.1.6", features = ["atty", "derive", "wrap_help"] }
 
 [profile.release]
 opt-level = "s"

src/cli.rs

@@ -1,48 +1,31 @@
-use clap::*;
+use clap::Parser;
+use std::ffi::OsString;
 
-pub(crate) fn parse_args() -> clap::ArgMatches<'static> {
-    App::new(crate_name!())
-        .version(crate_version!())
-        .about(crate_description!())
-        .help_message("Display help information.")
-        .after_help("Please, contribute and leave issues at https://github.com/marcospb19/dawctl")
-        .version_message("Display version information.")
-        .settings(&[AppSettings::ColoredHelp])
-        .arg(
-            Arg::with_name("dpi")
-                .long("--dpi")
-                .short("-d")
-                .value_name("DPI")
-                .help("Sensor DPI, multiples of 100. [200-6400]"),
-        )
-        .arg(
-            Arg::with_name("path")
-                .long("--path")
-                .short("-p")
-                .value_name("PATH")
-                .help("Path to the hidraw node. (example: /dev/hidraw3)"),
-        )
-        .arg(
-            Arg::with_name("brightness")
-                .long("--light")
-                .short("-l")
-                .value_name("BRIGHTNESS_LEVEL")
-                .help("Brightness level of the wheel and logo. [0-100]"),
-        )
-        .arg(
-            Arg::with_name("frequency")
-                .long("--frequency")
-                .short("-f")
-                .value_name("FREQUENCY")
-                .help("Sensor frequency in Hz. [500 or 1000]")
-                .possible_values(&["500", "1000"])
-                .hide_possible_values(true),
-        )
-        .arg(
-            Arg::with_name("breath")
-                .long("--breath")
-                .short("-b")
-                .help("Lighting breath effect."),
-        )
-        .get_matches()
+impl Args {
+    pub fn argparse() -> Self {
+        Self::parse()
+    }
+}
+
+#[derive(Parser, Debug)]
+pub struct Args {
+    /// Sensor DPI, multiples of 100. [200-6400].
+    #[clap(short, long, value_name = "DPI")]
+    pub dpi: Option<u16>,
+
+    /// Brightness level of the wheel and logo. [0-100]
+    #[clap(short = 'l', long = "--light", value_name = "BRIGHTNESS_LEVEL")]
+    pub brightness: Option<u16>,
+
+    /// Sensor frequency in Hz. [500 or 1000]
+    #[clap(short, long, value_name = "FREQUENCY", possible_values = &["500", "1000"], hide_possible_values = true)]
+    pub frequency: Option<u16>,
+
+    /// Lighting breath effect.
+    #[clap(short, long)]
+    pub breath: bool,
+
+    /// Path to the hidraw node. (example: /dev/hidraw3).
+    #[clap(short, long, value_name = "PATH")]
+    pub path: Option<OsString>,
 }