Implement done command

src/cli/done.rs

@@ -0,0 +1,16 @@
+use chrono::NaiveDateTime;
+
+use crate::eval::Entry;
+use crate::files::commands::Done;
+use crate::files::Files;
+
+use super::error::Result;
+
+pub fn mark_done(files: &mut Files, entry: &Entry, now: NaiveDateTime) -> Result<()> {
+    let done = Done {
+        date: entry.dates.map(|dates| dates.into()),
+        done_at: now.date(),
+    };
+    files.add_done(entry.source, done)?;
+    Ok(())
+}

src/cli/error.rs

@@ -1,5 +1,6 @@
 use std::result;
 
+use crate::files::Source;
 use crate::{eval, files};
 
 #[derive(Debug, thiserror::Error)]
@@ -8,6 +9,8 @@ pub enum Error {
     Files(#[from] files::Error),
     #[error("{0}")]
     Eval(#[from] eval::Error),
+    #[error("No number specified")]
+    NoNumber,
     #[error("No entry with number {0}")]
     NoSuchEntry(usize),
 }

src/cli/show.rs

@@ -115,23 +115,16 @@ impl ShowLines {
     }
 }
 
-pub fn show_all(layout: &LineLayout) -> String {
+pub fn show_all(layout: &LineLayout) {
     let num_width = cmp::max(layout.num_width(), 3); // `now` is 3 chars wide
     let mut show_lines = ShowLines::new(num_width, layout.span_width());
     for line in layout.lines() {
         show_lines.display_line(line);
     }
-    show_lines.result()
+    print!("{}", show_lines.result());
 }
 
-pub fn show_entry(
-    files: &Files,
-    entries: &[Entry],
-    layout: &LineLayout,
-    number: usize,
-) -> Result<()> {
-    let index = layout.look_up_number(number)?;
-    let entry = &entries[index];
+pub fn show_entry(files: &Files, entry: &Entry) -> Result<()> {
     let command = files.command(entry.source);
 
     match entry.kind {