feat: show backup sizes in list command

src/backup/mod.rs

@@ -20,6 +20,8 @@ use std::fs::File;
 use std::io;
 use std::path::{Path, PathBuf};
 
+const BYTE_SUFFIXES: [&str; 5] = ["B", "KiB", "MiB", "GiB", "TiB"];
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 pub enum BackupType {
     Full,
@@ -230,11 +232,24 @@ impl<T: Clone> fmt::Display for Backup<T> {
             BackupType::Incremental => 'I',
         };
 
+        // Pretty-print size
+        // If your backup is a petabyte or larger, this will crash and you need to re-evaluate your
+        // life choices
+        let mut index = 0;
+        let mut size = self.size as f64;
+
+        while size >= 1024.0 {
+            index += 1;
+            size /= 1024.0;
+        }
+
         write!(
             f,
-            "{} ({}, {})",
+            "{} ({}, {:.2}{}, {})",
             self.start_time.format(Backup::FILENAME_FORMAT),
             letter,
+            size,
+            BYTE_SUFFIXES[index],
             self.delta
         )
     }