Added scaffold for processing multiple playlists

src/command/dedupe.rs

@@ -1,10 +1,28 @@
+use clap::{Arg, Error, ErrorKind};
 use clap_nested::{Command};
 
 pub fn get_command<'a>() -> Command<'a, str>{
     Command::new("dedupe")
         .description("dedupe a m3u playlist")
-        .runner(| args, _matches| {
-            println!("Running dedupe, logging = {}", args);
-            Ok(())
+        .options(|app| {
+            app.arg(Arg::with_name("playlist")
+                .help("Path of the playlist(s) to de-duplicate")
+                .index(1)
+                .multiple(true)
+                .required(true)
+            )
+        })
+        .runner(| _args, matches| {
+            // println!("Running dedupe, logging = {}", args);
+            match matches.values_of("playlist") {
+                Some(playlists) => {
+                    for playlist in playlists {
+                        println!("{}", playlist)
+                    }
+                    Ok(())
+                },
+                None => Err(
+                    Error::with_description("playlist must be provided", ErrorKind::EmptyValue))
+            }
         })
 }