/******************************************************************************
 * This program simply copies one file to another, line by line.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

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

fn copyTextFile(fromFilespec:&str, toFilespec:&str) -> Result<(), Arc<dyn error::Error>> {
	utf8mode(ifh);
	utf8mode(ofh);
	let mut line:&str = "";
	while getline(line,ifh) {
		printLine(line,ofh);
	}
	close(ifh);
	close(ofh)?;
}

fn main() {
	if args.len() != 3 {
		println!("Syntax: {} {{fromFilespec}} {{toFilespec}}", utils::program_name().expect("program name should not be empty!"));
		exit(1);
	}
	let mut fromFilespec:String = args[1];
	let mut toFilespec:String = args[2];
	match (|| -> Result<(), Arc<dyn error::Error>>{
		copyTextFile(&fromFilespec, &toFilespec)?;
		return Ok(());
	})() {
		Ok(()) => {},
		Err(ex) => {
			if let Some(ex) = utils::isCustomErrorType(ex.clone(), io::Error("".to_string())){
				println!("Error: {}", format!("{}", ex));
			}
		}
	};
}