src/bin/cli.rs


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use clap::Parser;

#[derive(Parser)]
struct Cli {
    pattern: String,
    path: std::path::PathBuf,
}

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let args = Cli::parse();
    let result = std::fs::read_to_string(&args.path);
    let content = match result {
        Ok(content) => content,
        Err(error) => {
            return Err(error.into());
        }
    };
    println!("file content: {}", content);
    Ok(())
}