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// args.rs
// *************************************************************************
// * Copyright (C) 2018-2020 Daniel Mueller (deso@posteo.net) *
// * *
// * This program is free software: you can redistribute it and/or modify *
// * it under the terms of the GNU General Public License as published by *
// * the Free Software Foundation, either version 3 of the License, or *
// * (at your option) any later version. *
// * *
// * This program is distributed in the hope that it will be useful, *
// * but WITHOUT ANY WARRANTY; without even the implied warranty of *
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
// * GNU General Public License for more details. *
// * *
// * You should have received a copy of the GNU General Public License *
// * along with this program. If not, see <http://www.gnu.org/licenses/>. *
// *************************************************************************
use std::ffi;
use std::io;
use std::result;
use crate::arg_defs;
use crate::error::Error;
use crate::RunCtx;
type Result<T> = result::Result<T, Error>;
trait Stdio {
fn stdio(&mut self) -> (&mut dyn io::Write, &mut dyn io::Write);
}
impl<'io> Stdio for RunCtx<'io> {
fn stdio(&mut self) -> (&mut dyn io::Write, &mut dyn io::Write) {
(self.stdout, self.stderr)
}
}
impl<W> Stdio for (&mut W, &mut W)
where
W: io::Write,
{
fn stdio(&mut self) -> (&mut dyn io::Write, &mut dyn io::Write) {
(self.0, self.1)
}
}
/// A command execution context that captures additional data pertaining
/// the command execution.
pub struct ExecCtx<'io> {
pub model: Option<arg_defs::DeviceModel>,
pub stdout: &'io mut dyn io::Write,
pub stderr: &'io mut dyn io::Write,
pub admin_pin: Option<ffi::OsString>,
pub user_pin: Option<ffi::OsString>,
pub new_admin_pin: Option<ffi::OsString>,
pub new_user_pin: Option<ffi::OsString>,
pub password: Option<ffi::OsString>,
pub no_cache: bool,
pub verbosity: u64,
}
impl<'io> Stdio for ExecCtx<'io> {
fn stdio(&mut self) -> (&mut dyn io::Write, &mut dyn io::Write) {
(self.stdout, self.stderr)
}
}
/// Parse the command-line arguments and execute the selected command.
pub(crate) fn handle_arguments(ctx: &mut RunCtx<'_>, args: Vec<String>) -> Result<()> {
use structopt::StructOpt;
match arg_defs::Args::from_iter_safe(args.iter()) {
Ok(args) => {
let mut ctx = ExecCtx {
model: args.model,
stdout: ctx.stdout,
stderr: ctx.stderr,
admin_pin: ctx.admin_pin.take(),
user_pin: ctx.user_pin.take(),
new_admin_pin: ctx.new_admin_pin.take(),
new_user_pin: ctx.new_user_pin.take(),
password: ctx.password.take(),
no_cache: ctx.no_cache,
verbosity: args.verbose.into(),
};
args.cmd.execute(&mut ctx)
}
Err(err) => {
if err.use_stderr() {
Err(err.into())
} else {
println!(ctx, "{}", err.message)?;
Ok(())
}
}
}
}
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