#!/usr/bin/env swift;
/******************************************************************************
 * This program simply copies a file to the console character by
 * character like the Unix 'cat' program.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

import Foundation
import Utils

func readTextFile(_ filespec:String) throws -> Void {
	let ifh:StreamReader? = StreamReader(filespec)
	if ifh == nil {
		throw RuntimeError("Problem opening input file!")
	}
	var c:Int?
	c = ifh!.getCodepoint()
	while c != nil {
		print(Utils.chr(c!), terminator: "")
		c = ifh!.getCodepoint()
	}
	ifh!.close()
}

// Begin Main
if CommandLine.arguments.count != 2 {
	print("Syntax: " + CommandLine.arguments[0] + " {filename}")
	exit(1)
}
var filespec:String = CommandLine.arguments[1]
do {
	try readTextFile(filespec)
} catch let ex as RuntimeError {
	print("Error: " + ex.localizedDescription)
}

exit(EXIT_SUCCESS)