Add the --progress option to the fill command

The fill command starts a background operation on a Nitrokey Storage
device that fills the SD card with random data.  This patch adds a new
option, --progress, to the fill command that checks if a fill operation
is already running on the device and shows its progress.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/args.rs b/src/args.rs
index 4947825..8af38ca 100644
--- a/src/args.rs
+++ b/src/args.rs
@@ -80,7 +80,7 @@ Command! {
     /// Interacts with the device's encrypted volume
     Encrypted(EncryptedArgs) => |ctx, args: EncryptedArgs| args.subcmd.execute(ctx),
     /// Fills the SD card with random data
-    Fill => crate::commands::fill,
+    Fill(FillArgs) => |ctx, args: FillArgs| crate::commands::fill(ctx, args.attach),
     /// Interacts with the device's hidden volume
     Hidden(HiddenArgs) => |ctx, args: HiddenArgs| args.subcmd.execute(ctx),
     /// Lists the attached Nitrokey devices
@@ -190,6 +190,14 @@ Command! {EncryptedCommand, [
 ]}
 
 #[derive(Debug, PartialEq, structopt::StructOpt)]
+pub struct FillArgs {
+  /// Checks if a fill operation is already running and show its progress instead of starting a new
+  /// operation.
+  #[structopt(short, long)]
+  attach: bool,
+}
+
+#[derive(Debug, PartialEq, structopt::StructOpt)]
 pub struct HiddenArgs {
   #[structopt(subcommand)]
   subcmd: HiddenCommand,