Don't crash if file has no tags.

Closes #33

Cargo.lock

@@ -180,7 +180,7 @@ dependencies = [
 
 [[package]]
 name = "bliss-analyser"
-version = "0.4.0"
+version = "0.4.1"
 dependencies = [
  "anyhow",
  "argparse",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bliss-analyser"
-version = "0.4.0"
+version = "0.4.1"
 authors = ["Craig Drummond <craig.p.drummond@gmail.com>"]
 edition = "2021"
 license = "GPL-3.0-only"

ChangeLog

@@ -1,3 +1,7 @@
+0.4.1
+-----
+1. Don't crash if file has no tags.
+
 0.4.0
 -----
 1. Add action to export results from DB to files.

src/tags.rs

@@ -151,7 +151,13 @@ pub fn read(track: &String, read_analysis: bool) -> db::Metadata {
     if let Ok(file) = lofty::read_from_path(Path::new(track)) {
         let tag = match file.primary_tag() {
             Some(primary_tag) => primary_tag,
-            None => file.first_tag().expect("Error: No tags found!"),
+            None => {
+                if let Some(first_tag) = file.first_tag() {
+                    first_tag
+                } else {
+                    return meta;
+                }
+            }
         };
 
         meta.title = tag.title().unwrap_or_default().to_string();