src/main.rs: add last and diff option to mount subcommand

src/main.rs

@@ -52,7 +52,8 @@ enum Commands {
     DeleteHooks,
     /// Show differences between two commits of the `results` folder
     Diff(Diff),
-    /// Mount an old file/directory from one or multiple commits into the .mount folder inside de project directory.
+    /// Mount an old file/directory from one or multiple archive named afert
+    /// git commits into the .mount folder inside de project directory.
     Mount(Mount),
     /// Unmount everything in the folder .mount
     Umount,
@@ -143,20 +144,36 @@ struct Diff {
 
 #[derive(Debug, Args)]
 struct Mount {
-    /// Commit name, sh: Glob is supported.
-    /// This is an optional parameter: if not set then all commits will be displayed
+    /// Commit name, sh: Glob is supported. This is an optional parameter: if
+    /// not set then all commit archives will be mounted into the .mount directory
     #[clap(short, long)]
     commit: Option<String>,
-    /// The file/directory to extract
-    /// This is an optional parameter. If not set then all files in the archive will be displayed
+    /// The file/directory to extract. This is an optional parameter. If not set
+    /// then all files in the archive will be displayed
     #[clap(short, long)]
     path: Option<String>,
     /// If set, displays the .mount directory in 'version view'.
     ///
-    /// - Normal view: The mount directory contains a subfolder with the name of archives
-    /// - Version view: The mount directory contains the results folder and every file within it becomes a directory storing every version of that file
+    /// - Normal view: The `.mount` directory contains a subfolder with the name
+    ///   of archives.
+    ///
+    /// - Version view: The `.mount` directory contains the results folder and
+    ///   every file within it becomes a directory storing every version of
+    ///   that file
     #[clap(short, long)]
     versions: bool,
+    /// Displays the differences between two files mounted corresponding to the
+    /// given path.
+    ///
+    /// Note that if only one file is recovered then, the other is taken from
+    /// the current result folder
+    ///
+    /// This option is deactivated when used with --diff
+    #[clap(short, long)]
+    diff: bool,
+    /// Consider last N archive after  other filter were applied
+    #[clap(short, long)]
+    last: Option<u8>,
 }
 
 fn main() {
@@ -201,7 +218,13 @@ fn main() {
         }
         Commands::Mount(mount) => {
             mount::umount_archive(true);
-            mount::mount_archive(&mount.commit, &mount.path, mount.versions);
+            mount::mount_archive(
+                &mount.commit,
+                &mount.path,
+                mount.versions,
+                mount.diff,
+                mount.last,
+            );
         }
         Commands::Umount => {
             mount::umount_archive(false);