use clap3 instead of structopt (#10632)

* use clap3 instead of structopt

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* format

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* update ss58-registry and revert some nits

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* Fix clippy and doc

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* update clap to 3.0.7

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* Apply review suggestions

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* remove useless option long name

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* cargo fmt

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

substrate/client/cli/src/commands/generate_node_key.rs

@@ -18,13 +18,13 @@
 //! Implementation of the `generate-node-key` subcommand
 
 use crate::Error;
+use clap::Parser;
 use libp2p::identity::{ed25519 as libp2p_ed25519, PublicKey};
 use std::{fs, path::PathBuf};
-use structopt::StructOpt;
 
 /// The `generate-node-key` command
-#[derive(Debug, StructOpt)]
-#[structopt(
+#[derive(Debug, Parser)]
+#[clap(
 	name = "generate-node-key",
 	about = "Generate a random node libp2p key, save it to \
 			 file or print it to stdout and print its peer ID to stderr"
@@ -33,7 +33,7 @@ pub struct GenerateNodeKeyCmd {
 	/// Name of file to save secret key to.
 	///
 	/// If not given, the secret key is printed to stdout.
-	#[structopt(long)]
+	#[clap(long)]
 	file: Option<PathBuf>,
 }
 
@@ -66,7 +66,7 @@ mod tests {
 	fn generate_node_key() {
 		let mut file = Builder::new().prefix("keyfile").tempfile().unwrap();
 		let file_path = file.path().display().to_string();
-		let generate = GenerateNodeKeyCmd::from_iter(&["generate-node-key", "--file", &file_path]);
+		let generate = GenerateNodeKeyCmd::parse_from(&["generate-node-key", "--file", &file_path]);
 		assert!(generate.run().is_ok());
 		let mut buf = String::new();
 		assert!(file.read_to_string(&mut buf).is_ok());