clap-io 0.2.0

// Copyright (c) 2023 Swift Navigation
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

use anyhow::Result;

use clap::Parser;
use clap_io::InputOutput;

/// Copy --input to --output
#[derive(Debug, Parser)]
struct Cli {
    #[clap(flatten)]
    io: InputOutput,
}

fn main() -> Result<()> {
    let cli = Cli::parse();
    eprintln!("reading from {:?}", cli.io.input);
    eprintln!("writing to {:?}", cli.io.output);
    let mut input = cli.io.input.open()?;
    let mut output = cli.io.output.open()?;
    std::io::copy(&mut input, &mut output)?;
    Ok(())
}