//===============================================================================================/
//
// Assignment 2 - COMP 5421
// Author: Robert Maglieri
// ID: 40013562
// Files:   Command.h, Command.cpp
//          LineEditor.h, LineEditor.cpp
//          LineEditorDriver.cpp
//
// Description: This assignment creates a simple command line text editor using a specified syntax.
//                  Syntax is : address1 , address2 command
//                  address1 is an integer starting address, address 2 is an integer end address
//                      Address ranges are 1<x<n, where n is the last line.
//                  command can be any one of "a,i,r,p,n,c,u,d,w"
//
//              If the command takes only one input and two are supplied ( ex 1,3d ), then the address
//              is defaulted to the first address supplied.
//
//              There are two special characters, "." which represents the current line and "$" which is the 
//              last line. These can be used in place of integer address1 and address2.
//                
// How to run: 1)   Compile the code using your favorite compiler
//                  On linux use: g++ -std=c++11 LineEditorDriver.cpp LineEditor.cpp Command.cpp 
//             2)   Run ./a.out [arg], where arg is the filename.
//             3)   Enter commands.
//
//
//================================================================================================/