Only print date on the first fact for every day

src/bin/hamster/main.rs

@@ -54,12 +54,12 @@ fn main() -> Result<()> {
 
             let id = hamster.add_fact(&fact)?;
             println!("Added item:");
-            print_fact(&hamster.get_fact(id)?, print_id);
+            print_fact(&hamster.get_fact(id)?, print_id, true);
         }
         ("del", Some(opts)) => {
             let id = opts.value_of("id").unwrap().parse()?;
             println!("Going to delete fact:");
-            print_fact(&hamster.get_fact(id)?, print_id);
+            print_fact(&hamster.get_fact(id)?, print_id, true);
             hamster.del_fact(id)?;
             println!("Deleted");
         }
@@ -83,7 +83,7 @@ fn main() -> Result<()> {
             let id = hamster.update_fact(&fact)?;
 
             println!("Updated item:\n");
-            print_fact(&hamster.get_fact(id)?, print_id);
+            print_fact(&hamster.get_fact(id)?, print_id, true);
         }
         ("start", Some(opts)) => {
             let range = get_rel_range(opts.value_of("start_offset").unwrap())?;
@@ -103,7 +103,7 @@ fn main() -> Result<()> {
 
             let id = hamster.add_fact(&fact)?;
             println!("Started working:");
-            print_fact(&hamster.get_fact(id)?, print_id);
+            print_fact(&hamster.get_fact(id)?, print_id, true);
         }
         ("stop", Some(opts)) => {
             let range = get_rel_range(opts.value_of("stop_offset").unwrap())?;
@@ -132,7 +132,7 @@ fn main() -> Result<()> {
             let id = hamster.update_fact(&fact)?;
 
             println!("Stopped working:");
-            print_fact(&hamster.get_fact(id)?, print_id);
+            print_fact(&hamster.get_fact(id)?, print_id, true);
         }
         _ => {
             let ranges = vec![
@@ -164,8 +164,12 @@ fn list_facts(hamster: &Hamster, range: &FactRange, print_id: bool) -> Result<()
         .as_mut_slice()
         .sort_by_key(|fact| fact.range().start.unwrap());
 
+    let mut last_date = None;
+
     for ref fact in facts.iter() {
-        print_fact(fact, print_id);
+        let this_date = fact.range().start.map(|dt| dt.date());
+        print_fact(fact, print_id, this_date != last_date);
+        last_date = this_date;
     }
 
     let duration = facts
@@ -203,7 +207,7 @@ fn get_rel_range(rangestr: &str) -> Result<FactRange> {
     Ok(rangestr.parse::<FactRange>()?)
 }
 
-fn print_fact(fact: &Fact, print_id: bool) {
+fn print_fact(fact: &Fact, print_id: bool, print_date: bool) {
     let range = fact.range();
 
     let duration_str = if let Ok(duration) = fact.duration() {
@@ -215,8 +219,14 @@ fn print_fact(fact: &Fact, print_id: bool) {
     } else {
         "??:??".to_string()
     };
+    let fmt = if print_date {
+        "%Y-%m-%d %H:%M"
+    } else {
+        "%H:%M"
+    };
+
     println!(
-        "{}{:^16} - {:^5} ({}) [{:>12}]: {}",
+        "{}{:>16} - {:^5} ({}) [{:>12}]: {}",
         if print_id {
             if let Some(id) = fact.id() {
                 format!("[#{:>04}] ", id)
@@ -228,7 +238,7 @@ fn print_fact(fact: &Fact, print_id: bool) {
         },
         range
             .start
-            .map(|val| { val.format("%Y-%m-%d %H:%M").to_string() })
+            .map(|val| val.format(fmt).to_string())
             .unwrap_or_else(|| "".into()),
         range
             .end