Better command parser soon

Cargo.toml

@@ -20,7 +20,7 @@ uuid = "0.8"
 tui = "0.11"
 termion = "1.5"
 
-clap = "2.33"
+clap = "3.0.0-beta.2"
 
 smol = "1.2"
 

src/commands.rs

@@ -0,0 +1,54 @@
+use clap::{
+    App,
+    AppSettings,
+    ArgMatches,
+    Error,
+};
+
+enum Commands {
+
+}
+
+struct CommandParser<'help> {
+    app: App<'help>,
+}
+
+impl<'help> CommandParser<'help> {
+    pub fn new() -> Self {
+        Self { 
+            app: App::new("Commands")
+                .setting(AppSettings::DisableVersion)
+                .setting(AppSettings::StrictUtf8)
+                .setting(AppSettings::ColorAlways)
+                .setting(AppSettings::NoBinaryName)
+                .subcommand(App::new("connect")),
+        }
+    }
+
+    pub fn parse<I: IntoIterator<Item = String>>(&mut self, iter: I) -> Result<ArgMatches, Error> {
+        self.app.try_get_matches_from_mut(iter)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn parse_commands_test() {
+        let mut cmds = CommandParser::new();
+        let p = vec!["connect".to_string()];
+        let matches = cmds.parse(p).unwrap();
+
+        assert_eq!(matches.subcommand_name(), Some("connect"));
+    }
+
+    #[test]
+    fn fail_parsing_test() {
+        let mut cmds = CommandParser::new();
+        let p = vec!["invalid".to_string()];
+        let matches = cmds.parse(p);
+
+        assert!(matches.is_err())
+    }
+}

src/main.rs

@@ -38,17 +38,16 @@ fn main() -> Result<(), io::Error> {
         .version(env!("CARGO_PKG_VERSION"))
         .author(env!("CARGO_PKG_AUTHORS"))
         .about(env!("CARGO_PKG_DESCRIPTION"))
-        .usage("Press `?` in the GUI to see keybindings")
         .before_help(BANNER)
-        .arg(Arg::with_name("config")
+        .arg(Arg::new("config")
-            .short("c")
+            .short('c')
             .long("config")
-            .help("Specify configuration file path")
+            .about("Specify configuration file path")
             .takes_value(true))
-        .arg(Arg::with_name("server")
+        .arg(Arg::new("server")
-            .short("s")
+            .short('s')
             .long("server")
-            .help("Connect to the specified address[:port] as server")
+            .about("Connect to the specified address[:port] as server")
             .takes_value(true))
         .get_matches();