isla 0.2.0

// BSD 2-Clause License
//
// Copyright (c) 2020 Alasdair Armstrong
// Copyright (c) 2020 Brian Campbell
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

use getopts::Options;
use isla_lib::zencode;

fn main() {
    let mut opts = Options::new();
    opts.optflag("d", "decode", "decode string rather than encode");
    opts.optflag("h", "help", "print this help message");
    let args: Vec<String> = std::env::args().collect();
    let matches = opts.parse(&args[1..]).unwrap_or_else(|err| {
        eprintln!("{}", err);
        std::process::exit(1);
    });

    if matches.opt_present("help") {
        print!("{}", opts.usage("Usage: zencode [options] <string> ..."));
        std::process::exit(0);
    }

    let encode = !matches.opt_present("decode");

    for s in matches.free {
        println!("{}", if encode { zencode::encode(&s) } else { zencode::decode(&s) });
    }
}