numf/src/main.rs

//! # numf
//!
//! This binary should just take any amount of numbers and print them out formatted to some other
//! system.

use clap::{ArgGroup, Parser};
use clap_num::maybe_hex;

mod format;
use format::*;

#[derive(Parser, Debug)]
#[clap(author, version, about, long_about = None)]
#[command(
    author,
    version,
    about,
    long_about,
    help_template = r#"{about-section}
{usage-heading} {usage}
{all-args}{tab}

{name}: {version}
Author: {author-with-newline}
"#
)]
#[clap(group(
            ArgGroup::new("format")
                .args(&["hex", "bin", "oct", "dec", "base64", "base32"]),
        ))]
struct Cli {
    #[arg(short, long)]
    /// add a prefix (like "0x" for hex)
    prefix: bool,
    #[arg(short = 'P', long)]
    /// add a padding to make the number at least one byte long
    ///
    /// For example, `0b1100` will be `0b00001100` with this.
    /// This does not apply to all formats, only hexadecimal and binary.
    padding: bool,
    #[arg(short = 'x', long, default_value_t = true)]
    /// format to hexadecimal
    hex: bool,
    #[arg(short, long)]
    /// format to binary
    bin: bool,
    #[arg(short, long)]
    /// format to decimal
    dec: bool,
    #[arg(short, long)]
    /// format to octal
    oct: bool,
    #[arg(short = 's', long)]
    /// format to base64
    base64: bool,
    #[arg(short = 'z', long)]
    /// format to base32
    base32: bool,
    #[clap(value_parser=maybe_hex::<Num>, required=true)]
    /// at least one number that should be formatted
    ///
    /// supports either base 10 or base 16 inputs (with 0xaaaa)
    numbers: Vec<Num>,
}

impl Cli {
    fn format(&self) -> Format {
        if self.oct {
            Format::Octal
        } else if self.bin {
            Format::Bin
        } else if self.dec {
            Format::Dec
        } else if self.base64 {
            Format::Base64
        } else if self.base32 {
            Format::Base32
        } else if self.hex {
            Format::Hex
        } else {
            unreachable!()
        }
    }
}

fn main() {
    let cli = Cli::parse();
    let options: FormatOptions = FormatOptions::default()
        .padding(cli.padding)
        .prefix(cli.prefix);

    let mut out: Vec<String> = Vec::new();

    for num in &cli.numbers {
        out.push(cli.format().format(*num, options));
    }
    for o in out {
        println!("{o}")
    }
}