Added tooling for reading m3u playlists

src/command/dedupe.rs

@@ -1,6 +1,8 @@
 use clap::{Arg, Error, ErrorKind};
 use clap_nested::{Command};
 
+use crate::lib::m3u::{Playlist};
+
 pub fn get_command<'a>() -> Command<'a, str>{
     Command::new("dedupe")
         .description("dedupe a m3u playlist")
@@ -16,8 +18,9 @@ pub fn get_command<'a>() -> Command<'a, str>{
             // println!("Running dedupe, logging = {}", args);
             match matches.values_of("playlist") {
                 Some(playlists) => {
-                    for playlist in playlists {
-                        println!("{}", playlist)
+                    for path in playlists {
+                        let playlist = Playlist::read(path)?;
+                        println!("{:?}", playlist);
                     }
                     Ok(())
                 },

src/lib/m3u.rs

@@ -0,0 +1,33 @@
+use std::fs::File;
+use std::io::{self, BufRead};
+use std::path::Path;
+use std::string::String;
+
+fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
+    where P: AsRef<Path>, {
+    let file = File::open(filename)?;
+    Ok(io::BufReader::new(file).lines())
+}
+
+#[derive(Debug)]
+pub struct Playlist {
+    path: String,
+    tracks: Box<Vec<String>>
+}
+
+impl Playlist {
+    pub fn read(path: &str) -> Result<Playlist, io::Error> {
+        let playlist_path: String = String::from(path);
+        let mut playlist_tracks: Vec<String> = Vec::new();
+        let lines = read_lines(path)?;
+        lines.for_each(|read_line| {
+            if read_line.is_ok() {
+                let line = read_line.unwrap();
+                if line.len() > 0 && !line.starts_with("#") {
+                    playlist_tracks.push(line)
+                }
+            }
+        });
+        Ok(Playlist { path: playlist_path, tracks: Box::new(playlist_tracks) })
+    }
+}

src/lib/mod.rs

@@ -0,0 +1 @@
+pub mod m3u;

src/main.rs

@@ -2,6 +2,7 @@ use clap::{Arg};
 use clap_nested::{Commander};
 
 mod command;
+mod lib;
 
 const VERSION: Option<&'static str> = option_env!("CARGO_PKG_VERSION");
 

test.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+
+#EXTINF:123, Sample artist - Sample title
+C:\Documents and Settings\I\My Music\Sample.mp3
+
+#EXTINF:321,Example Artist - Example title
+C:\Documents and Settings\I\My Music\Greatest Hits\Example.ogg