Moved parameter reader into own file

src/main.rs

@@ -1,57 +1,20 @@
+#[macro_use]
 extern crate clap;
+mod configuration;
 
-use clap::{App, Arg, ArgMatches};
+use crate::configuration::Settings;
 
 /**
  * Initiates an instance of the gopherbridge server and
  * starts listening for connections on the given port.
  */
 fn main() {
-    let matches = parse_command_line();
-    let pluginlist = matches.value_of("PLUGIN");
-    let port = matches.value_of("PORT");
+    let settings = Settings::create();
 
-    match port {
-        None => println!("Default port 70 used"),
-        Some(p) => println!("Using port {}", p),
-    }
-
-    match pluginlist {
-        None => println!("No plugins given"),
-        Some(p) => println!("Loading the following plugins: {}", p),
+    println!("Program listens on {}", settings.listen);
+    println!("Loading plugins {:?}", settings.plugins);
+    println!("Listening on port {}", settings.port);
+    if settings.foreground {
+        println!("Server runs in the foreground");
     }
 }
-
-/**
- * Defines the command line parameters passed to the server and creates the
- * server lines
- */
-fn parse_command_line<'a>() -> ArgMatches<'a> {
-    return App::new("gopherbridge")
-        .version("0.1")
-        .author("jali@orca-central.de")
-        .about("a simple modular gopher server, that pushes converted web-content to a client")
-        .arg(
-            Arg::with_name("FORGROUND")
-                .short("f")
-                .long("foreground")
-                .help("Keeps the service in the foreground")
-                .takes_value(false),
-        )
-        .arg(
-            Arg::with_name("PLUGIN")
-                .short("l")
-                .long("plugins")
-                .value_name("PLUGINLIST")
-                .takes_value(true)
-                .index(1),
-        )
-        .arg(
-            Arg::with_name("PORT")
-                .short("p")
-                .long("port")
-                .help("Specifies the port the server listens on. Default is 70")
-                .takes_value(true),
-        )
-        .get_matches();
-}