added some comments

src/repo.rs

@@ -25,6 +25,9 @@ pub enum Repo {
 }
 
 /// check if yaml line matches and returns the split of repo string and rest
+/// the first &str is the image tag
+/// it will be used to not change the identation
+/// the second &str will the the identifier for the image
 pub fn match_yaml_image(input: &str) -> Result<(&str, &str), Error> {
     lazy_static::lazy_static! {
         static ref REGEX: Regex = Regex::new(r"^( +image *: *)([a-z0-9\./:]+)").unwrap();
@@ -37,6 +40,7 @@ pub fn match_yaml_image(input: &str) -> Result<(&str, &str), Error> {
     Ok((caps.get(1).unwrap().as_str(), caps.get(2).unwrap().as_str()))
 }
 
+/// takes the identifier and splits off the tag it exists
 pub fn split_tag_from_repo(input: &str) -> Result<(&str, &str), Error> {
     lazy_static::lazy_static! {
         static ref REGEX: Regex = Regex::new(r"^([a-z0-9\./[^:]]*):?([a-z0-9._\-]*)").unwrap();
@@ -59,6 +63,7 @@ pub fn split_tag_from_repo(input: &str) -> Result<(&str, &str), Error> {
     Ok((front, back))
 }
 
+/// takes an identifier and changes it to a Repo enum
 pub fn split_repo_without_tag(repo: &str) -> Result<Repo, Error> {
     let repo = repo.trim();
     let split_repo: Vec<&str> = repo.split('/').collect();

src/ui/default.rs

@@ -28,6 +28,16 @@ pub enum State {
     SelectService,
 }
 
+impl std::fmt::Display for State {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            State::EditRepo => write!(f, "Edit repository"),
+            State::SelectTag => write!(f, "Select a tag"),
+            State::SelectService => write!(f, "Select a image"),
+        }
+    }
+}
+
 impl std::iter::Iterator for State {
     type Item = Self;
 
@@ -103,13 +113,14 @@ impl Ui {
                 Ok(Key::Ctrl('q')) => break 'core, //quit program without saving
                 Ok(Key::Char('\t')) => {
                     ui.state.next();
+                    ui.info.set_info(&ui.state);
                 }
                 Ok(Key::Ctrl('s')) => match ui.services.save() {
                     Err(e) => {
                         ui.info.set_info(&format!("{}", e));
                         continue;
                     }
-                    Ok(_) => ui.info.set_info("Saved compose file"),
+                    Ok(_) => ui.info.set_text("Saved compose file"),
                 },
                 Ok(Key::Ctrl('r')) => {
                     ui.repo.confirm();
@@ -139,7 +150,7 @@ impl Ui {
                 Ok(Key::Char(key)) => match ui.state {
                     State::SelectService => (),
                     State::EditRepo => {
-                        ui.info.set_info("Editing Repository");
+                        ui.info.set_text("Editing Repository");
                         ui.repo.handle_input(Key::Char(key));
                     }
                     State::SelectTag => (),
@@ -147,7 +158,7 @@ impl Ui {
                 Ok(Key::Backspace) => match ui.state {
                     State::SelectService => (),
                     State::EditRepo => {
-                        ui.info.set_info("Editing Repository");
+                        ui.info.set_text("Editing Repository");
                         ui.repo.handle_input(Key::Backspace);
                     }
                     State::SelectTag => (),

src/ui/no_yaml.rs

@@ -17,6 +17,15 @@ pub enum State {
     SelectTag,
 }
 
+impl std::fmt::Display for State {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            State::EditRepo => write!(f, "Edit repository"),
+            State::SelectTag => write!(f, "Select a tag"),
+        }
+    }
+}
+
 impl std::iter::Iterator for State {
     type Item = Self;
 
@@ -97,6 +106,7 @@ impl NoYaml {
                 Ok(Key::Ctrl('q')) => break 'core,
                 Ok(Key::Char('\t')) => {
                     ui.state.next();
+                    ui.info.set_info(&ui.state);
                 }
                 Ok(Key::Ctrl('r')) => {
                     ui.repo.confirm();
@@ -111,7 +121,7 @@ impl NoYaml {
                 },
                 Ok(Key::Char(key)) => match ui.state {
                     State::EditRepo => {
-                        ui.info.set_info("Editing Repository");
+                        ui.info.set_text("Editing Repository");
                         ui.repo.handle_input(Key::Char(key));
                     }
                     State::SelectTag => {
@@ -120,7 +130,7 @@ impl NoYaml {
                 },
                 Ok(Key::Backspace) => match ui.state {
                     State::EditRepo => {
-                        ui.info.set_info("Editing Repository");
+                        ui.info.set_text("Editing Repository");
                         ui.repo.handle_input(Key::Backspace);
                     }
                     State::SelectTag => (),

src/widget/info.rs

@@ -27,7 +27,13 @@ impl Info {
             .highlight_style(Style::default().bg(Color::Black))
     }
 
-    pub fn set_info(&mut self, info: &str) {
+    /// set a text to display
+    pub fn set_text(&mut self, info: &str) {
         self.info = String::from(info);
     }
+
+    /// print a text to display
+    pub fn set_info(&mut self, text: &dyn std::fmt::Display) {
+        self.info = format!("{}", text);
+    }
 }

src/widget/service_switcher.rs

@@ -34,6 +34,7 @@ pub struct ServiceSwitcher {
 
 impl ServiceSwitcher {
     pub fn new(file: &Option<PathBuf>) -> Option<Self> {
+        //gather possible filenames
         let mut file_list = vec![
             PathBuf::from("docker-compose.yml"),
             PathBuf::from("docker-compose.yaml"),
@@ -43,6 +44,7 @@ impl ServiceSwitcher {
             Some(file) => file_list.insert(0, file.clone()),
         }
 
+        //try filenames
         for file in file_list {
             let list = match File::open(&file) {
                 Err(_) => continue,