/******************************************************************************
 * This program reads bytes from a file and prints them in decimal format.
 * 
 * Copyright © 2021 Richard Lesh.  All rights reserved.
 *****************************************************************************/

mod utils;
use std::env;
use std::error;
use std::sync::Arc;

fn readBinaryFile(filespec:&str) -> Result<(), Arc<dyn error::Error>> {
	binmode(ifh);
	let mut c:u8 = 0;
	let mut count:isize = 0;
	while getbyte(c,ifh) {
		print!("{} ", c);
		count += 1;
		if count % 20 == 0 {
			println!("");
		}
	}
	if count % 20 != 0 {
		println!("");
	}
	close(ifh)?;
}

fn main() {
	let args: Vec<String> = env::args().collect();
	if args.len() != 2 {
		println!("Syntax: {} {{filename}}", utils::program_name().expect("program name should not be empty!"));
		exit(1);
	}
	let mut filespec:String = args[1];
	match (|| -> Result<(), Arc<dyn error::Error>>{
		readBinaryFile(&filespec)?;
		return Ok(());
	})() {
		Ok(()) => {},
		Err(ex) => {
			if let Some(ex) = utils::isCustomErrorType(ex.clone(), io::Error("".to_string())){
				println!("Error: {}", format!("{}", ex));
			}
		}
	};
}