Crate take_bytes 

take_bytes

A lightweight utility for reading input from stdin or a file path, designed for seamless integration with clap’s derive API.

Overview

take_bytes provides a TakeBytes type that implements FromStr, allowing it to be used directly as a clap argument type. When the user passes "-", input is read from stdin; otherwise, the argument is treated as a file path.

Example

use clap::Parser;
use take_bytes::TakeBytes;

#[derive(Parser)]
struct Cli {
    /// Input file or "-" for stdin
    #[arg(default_value = "-")]
    input: TakeBytes,
}

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let cli = Cli::parse();
    let contents = cli.input.try_into_bytes()?;
    println!("Read {} bytes", contents.len());
    Ok(())
}

Structs

TakeBytes

A source of bytes from either stdin or a file path.

Enums

DecodingError

Errors that can occur when decoding input.

Source

Represents the source of input data.

Functions

decode_utf8_string

Read the entire contents from the input source and decode as UTF-8.

read_as_bytes

Read the entire contents from the input source as bytes.