From 2fae1d8f206ce18814e51ef89e6f9829b26f1d6a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Fri, 19 Nov 2021 11:29:46 +0200
Subject: [PATCH] Don't bother parsing as a playlist or detecting if it's a
 master/media playlist if it doesn't start with `#EXTM3U`

---
 src/parser.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/parser.rs b/src/parser.rs
index c877e4b..71b825e 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -42,6 +42,8 @@ use std::string;
 /// }
 /// ```
 pub fn parse_playlist(input: &[u8]) -> IResult<&[u8], Playlist> {
+    m3u_tag(input)?;
+
     match is_master_playlist(input) {
         true => map(parse_master_playlist, Playlist::MasterPlaylist)(input),
         false => map(parse_media_playlist, Playlist::MediaPlaylist)(input),
@@ -135,6 +137,7 @@ pub fn is_master_playlist(input: &[u8]) -> bool {
 /// - Some(true, tagstring): Line contains a master playlist tag
 /// - Some(false, tagstring): Line contains a media playlist tag
 fn contains_master_tag(input: &[u8]) -> Option<(bool, String)> {
+    let (input, _) = m3u_tag(input).ok()?;
     let mut is_master_opt = None;
     let mut current_input: &[u8] = input;