#!/usr/bin/env swift;
/******************************************************************************
 * This program simply writes the bytes 0 - 256 to a binary file.
 * 
 * Copyright © 2021 Richard Lesh.  All rights reserved.
 *****************************************************************************/

import Foundation
import Utils

func writeBinaryFile(_ filespec:String) throws -> Void {
	FileManager.default.createFile(atPath: filespec, contents: nil)
	let ofh:FileHandle? = FileHandle(forWritingAtPath: filespec)
	if ofh == nil {
		throw RuntimeError("Problem opening output file!")
	}
	for b:Int in 0...255 {
		ofh!.write(Data([UInt8(b)]))
	}
	try ofh!.close()
}

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

exit(EXIT_SUCCESS)