Remove args::parse_arguments function

The split between the parse_arguments and the handle_arguments functions
is not really useful for reasoning about the code. In fact, it just adds
additional overhead in the form of complex function signatures into the
picture.
As it provides no real other value, this change merges the functionality
of both functions into a single one: handle_arguments.

nitrocli/src/args.rs

@@ -862,12 +862,8 @@ fn pws_status(ctx: &mut ExecCtx<'_>, args: Vec<String>) -> Result<()> {
  commands::pws_status(ctx, all)
 }
 
-/// Parse the command-line arguments and return the selected command and
-/// the remaining arguments for the command.
-fn parse_arguments<'io, 'ctx: 'io>(
- ctx: &'ctx mut RunCtx<'_>,
- args: Vec<String>,
-) -> Result<(Command, ExecCtx<'io>, Vec<String>)> {
+/// Parse the command-line arguments and execute the selected command.
+pub(crate) fn handle_arguments(ctx: &mut RunCtx<'_>, args: Vec<String>) -> Result<()> {
  use std::io::Write;
 
  let mut model: Option<DeviceModel> = None;
@@ -917,7 +913,7 @@ fn parse_arguments<'io, 'ctx: 'io>(
  result?;
  subargs.insert(0, format!("nitrocli {}", command));
 
- let ctx = ExecCtx {
+ let mut ctx = ExecCtx {
  model,
  stdout: ctx.stdout,
  stderr: ctx.stderr,
@@ -928,11 +924,5 @@ fn parse_arguments<'io, 'ctx: 'io>(
  password: ctx.password.take(),
  verbosity,
  };
- Ok((command, ctx, subargs))
-}
-
-/// Parse the command-line arguments and execute the selected command.
-pub(crate) fn handle_arguments(ctx: &mut RunCtx<'_>, args: Vec<String>) -> Result<()> {
- let (command, mut ctx, args) = parse_arguments(ctx, args)?;
- command.execute(&mut ctx, args)
+ command.execute(&mut ctx, subargs)
 }