Refactored m3u playlist parsing for playlists with missing group and id information in header.

src/utils/string_utils.rs

@@ -0,0 +1,14 @@
+// other implementations like calculating text_distance on all titles took too much time
+// we keep it now as simple as possible and less memory intensive.
+pub (crate) fn get_title_group(text: &str) -> String {
+    let alphabetic_only: String = text.chars().map(|c| if c.is_alphanumeric() { c } else { ' ' }).collect();
+    let parts = alphabetic_only.split_whitespace();
+    let mut combination = "".to_string();
+    for p in parts.into_iter() {
+        combination = format!("{} {}", combination, p).trim().to_string();
+        if combination.len() > 2 {
+            return combination;
+        }
+    }
+    text.to_string()
+}