Adjust clock color when shifting time.

src/alarm.rs

@@ -76,8 +76,8 @@ impl Countdown {
 }
 
 pub struct Alarm {
-    time: u32,
-    label: String,
+    pub time: u32,
+    pub label: String,
     color_index: usize,
     exceeded: bool,
 }
@@ -178,27 +178,28 @@ impl AlarmRoster {
         !self.list.iter().any(|a| !a.exceeded)
     }
 
-    // Check for exceeded alarms.
+    // Find and process exceeded alarms.
     pub fn check(&mut self,
         clock: &mut Clock,
         layout: &Layout,
         countdown: &mut Countdown,
         force_redraw: bool,
-    ) -> Option<(u32, &String)>
+    ) -> Option<&Alarm>
     {
         let mut ret = None;
         let size = self.list.len() as u16;
 
-        for (index, alarm) in self.list.iter_mut().enumerate()
+        for (index, alarm) in self.list.iter_mut()
+            .enumerate()
             // Ignore alarms marked exceeded.
             .filter(|(_, a)| !a.exceeded) {
 
             if alarm.time <= clock.elapsed {
                 // Found alarm to raise.
-                ret = Some((alarm.time, &alarm.label));
                 alarm.exceeded = true;
                 clock.color_index = Some(alarm.color_index);
                 countdown.reset();
+                ret = Some(&*alarm);
                 // Skip ahead to the next one.
                 continue;
             }
@@ -332,9 +333,16 @@ impl AlarmRoster {
     }
 
     // Call when time jumps backwards.
-    pub fn time_travel(&mut self, time: u32) {
+    pub fn time_travel(&mut self, clock: &mut Clock) {
+        clock.color_index = None;
+
         for alarm in self.list.iter_mut() {
-            alarm.exceeded = alarm.time <= time;
+            if alarm.time <= clock.elapsed {
+                alarm.exceeded = true;
+                clock.color_index = Some(alarm.color_index);
+            } else {
+                alarm.exceeded = false;
+            }
         }
     }
 
@@ -344,21 +352,22 @@ impl AlarmRoster {
     {
         let mut buffer = String::new();
         loop {
+            buffer.clear();
             match stdin.read_line(&mut buffer) {
                 Ok(0) => break, // EOF.
                 Ok(1) => continue, // Empty (newline only).
+                Ok(_) if buffer.starts_with('#') => continue,
                 Ok(_) => (),
                 Err(e) => return Err(e.to_string()),
             }
             // Strip newline.
-            buffer.retain(|c| c != '\n');
+            if buffer.ends_with('\n') { buffer.pop(); }
             // Ignore lines containing only white spaces.
             if buffer.contains(|c: char| !c.is_whitespace()) {
                 if let Err(e) = self.add(&buffer) {
-                    return Err(e.to_string());
+                    return Err(format!("Value \"{}\": {}",buffer, e));
                 }
             }
-            buffer.clear();
         }
         Ok(())
     }

src/lib.rs

@@ -119,8 +119,29 @@ pub fn run(
                 Err(e) => return Err(e),
             }
 
+            // Check on last spawned child process prior to processing the
+            // alarm roster and possibly starting a new one.
+            if let Some(ref mut child) = spawned {
+                match child.try_wait() {
+                    // Process exited successfully.
+                    Ok(Some(status)) if status.success() => *spawned = None,
+                    // Abnormal exit.
+                    Ok(Some(status)) => {
+                        eprintln!("Spawned process terminated with non-zero exit status. ({})", status);
+                        *spawned = None;
+                    },
+                    // Process is still running.
+                    Ok(None) => (),
+                    // Other error.
+                    Err(error) => {
+                        eprintln!("Error executing command. ({})", error);
+                        *spawned = None;
+                    },
+                }
+            }
+
             // Check for exceeded alarms.
-            if let Some((time, label)) = alarm_roster.check(
+            if let Some(alarm) = alarm_roster.check(
                 &mut clock,
                 &layout,
                 &mut countdown,
@@ -136,7 +157,7 @@ pub fn run(
                     match config.command {
                         // Run command if configured and no command is running.
                         Some(ref command) if spawned.is_none() => {
-                            *spawned = exec_command(command, time, &label);
+                            *spawned = exec_command(command, alarm.time, &alarm.label);
                         },
                         // Last command is still running.
                         Some(_) => eprintln!("Not executing command, as its predecessor is still running"),
@@ -184,26 +205,6 @@ pub fn run(
                 countdown.draw(&mut stdout)?;
             }
 
-            // Check any spawned child process.
-            if let Some(ref mut child) = spawned {
-                match child.try_wait() {
-                    // Process exited successfully.
-                    Ok(Some(status)) if status.success() => *spawned = None,
-                    // Abnormal exit.
-                    Ok(Some(status)) => {
-                        eprintln!("Spawned process terminated with non-zero exit status. ({})", status);
-                        *spawned = None;
-                    },
-                    // Process is still running.
-                    Ok(None) => (),
-                    // Other error.
-                    Err(error) => {
-                        eprintln!("Error executing command. ({})", error);
-                        *spawned = None;
-                    },
-                }
-            }
-
             // End of conditional inner loop.
             // Reset redraw_all and flush stdout.
             force_redraw = false;
@@ -269,7 +270,7 @@ pub fn run(
                 },
                 Key::Down if clock.paused => {
                     clock.shift(-10);
-                    alarm_roster.time_travel(clock.elapsed);
+                    alarm_roster.time_travel(&mut clock);
                     layout.schedule_recalc();
                     force_redraw = true;
                 },

src/main.rs

@@ -33,7 +33,7 @@ fn main() {
 
     // Wait for remaining spawned processes to exit.
     if let Some(ref mut child) = spawned {
-        eprint!("Waiting for spawned process (PID {}) to exit ...", child.id());
+        eprint!("Waiting for spawned process (PID {}) to finish ...", child.id());
 
         match child.wait() {
             Ok(status) => eprintln!(" ok ({})", status),