1 files changed, 11 insertions, 2 deletions
diff --git a/src/utils.rs b/src/utils.rs
index bb96909..21b01a7 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -13,7 +13,7 @@ const UNSUBSCRIBE_NOTE: &str = "Note: this does NOT delete any downloaded podcas
 
 pub fn trim_extension(filename: &str) -> Option<String> {
     let name = String::from(filename);
-    if name.contains(".") {
+    if name.contains('.') {
         name.rfind('.').map(|index| String::from(&name[0..index]))
     } else {
         Some(name)
@@ -21,7 +21,7 @@ pub fn trim_extension(filename: &str) -> Option<String> {
 }
 
 pub fn find_extension(input: &str) -> Option<String> {
-    let s: Vec<String> = input.split(".").map(|s| s.to_string()).collect();
+    let s: Vec<String> = input.split('.').map(|s| s.to_string()).collect();
     if s.len() > 1 {
         return s.last().cloned();
     }
@@ -39,6 +39,15 @@ pub fn get_podcast_dir() -> Result<PathBuf> {
     }
 }
 
+pub fn append_extension(filename: &str, ext: &str) -> String {
+    let mut f = filename.to_string();
+    if !f.ends_with('.') {
+        f.push_str(".");
+    }
+    f.push_str(ext);
+    f
+}
+
 pub fn create_dir_if_not_exist(path: &PathBuf) -> Result<()> {
     DirBuilder::new().recursive(true).create(&path)?;
     Ok(())