feat: include totals of all statistics

This patch adds a final row to the table that is simply the sum of
each of the columns. This is nice in that it gives a final at-a-glance
summary of the "size" of the changes in the revision range.

Closes: #34

Cargo.toml

@@ -16,5 +16,6 @@ categories = ["command-line-utilities"]
 anyhow = "1.0.81"
 clap = { version = "4.5.4", features = ["wrap_help", "derive"] }
 rayon = "1.10.0"
-tabled = "0.15.0"
+tabled = { version = "0.15.0", features = ["ansi"] }
 xshell = "0.2.6"
+yansi = "1.0.1"

README.md

@@ -18,20 +18,22 @@
 </div>
 <br>
 
-Git Stats parses shortlog information to get stats about the files changed, additions, and
-deletions. For example:
+Git Stats parses [shortlog](https://git-scm.com/docs/git-shortlog) information to get stats about the files changed, additions, and deletions.
+For example:
 
     $ git stats -r origin..HEAD
-     Author      Commits  Changed Files  Insertions  Deletions  Net Δ
-     Luke Hsiao       30             50       +1324       -166  +1158
+      Author           Commits  Changed Files  Insertions  Deletions  Net Δ
+      Luke Hsiao            55             95       +2395      -1052  +1343
+      dependabot[bot]       31             62        +203       -267    -64
+                Total       86            157       +2598      -1319  +1279
 
-     Reviewer/Tester  Commits
-     Luke Hsiao             1
+      Reviewer/Tester  Commits
+      Luke Hsiao             1
 
 ## Install
 
-This is a glorified shell script. As such, it expects that you have `git` installed on your machine
-and in your `$PATH`.
+This is a glorified shell script.
+As such, it expects that you have `git` installed on your machine and in your `$PATH`.
 
 ### From crates.io
 

src/main.rs

@@ -4,9 +4,14 @@ use anyhow::{bail, Result};
 use clap::Parser;
 use rayon::prelude::*;
 use tabled::{
-    settings::{object::Columns, Alignment, Modify, Style},
+    settings::{
+        format::Format,
+        object::{Columns, Rows},
+        Alignment, Modify, Style,
+    },
     Table, Tabled,
 };
+use yansi::Paint;
 
 use xshell::{cmd, Shell};
 
@@ -98,7 +103,7 @@ fn main() -> Result<()> {
         .collect::<_>();
 
     if !shortlog.is_empty() {
-        let stats: Vec<Stat> = shortlog
+        let mut stats: Vec<Stat> = shortlog
             .par_iter()
             .map(|(commits, author)| {
                 let sh = Shell::new()?;
@@ -138,10 +143,33 @@ fn main() -> Result<()> {
             .filter_map(|r| r.ok())
             .collect::<_>();
 
+        // Collect totals
+        let totals = stats.iter().fold(
+            Stat {
+                author: "Total".to_string(),
+                commits: 0,
+                num_files: 0,
+                insertions: 0,
+                deletions: 0,
+                net: 0,
+            },
+            |acc, s| Stat {
+                author: acc.author,
+                commits: acc.commits + s.commits,
+                num_files: acc.num_files + s.num_files,
+                insertions: acc.insertions + s.insertions,
+                deletions: acc.deletions + s.deletions,
+                net: acc.net + s.net,
+            },
+        );
+        stats.push(totals);
+
         let mut table = Table::new(stats);
         table
             .with(Style::empty())
-            .with(Modify::new(Columns::new(1..=5)).with(Alignment::right()));
+            .modify(Columns::new(1..=5), Alignment::right())
+            .modify(Rows::last(), Alignment::right())
+            .modify(Rows::last(), Format::content(|s| s.bold().to_string()));
 
         println!("{table}");
     }