IO Arg

方便在用 Rust 编写的 CLI 工具中将标准流或文件路径作为参数接受。

用法

use io_arg::IoArg;
use clap::Parser;

/// A command line tool taking a required input argument and an optional output argument.
#[derive(Debug, Parser)]
struct Cli {
    /// Path to input file. Set to "-" to use STDIN instead of a file.
    input: IoArg,
    /// Path to output file. Leave out or set to "-" to use STDOUT instead of a file.
    #[structopt(long, short = "o", default_value = "-")]
    output: IoArg,
}

lib.rs:

方便在您的命令行界面中处理和使用 IO 参数。