linkedlist.cpp

/**********************************************************************
 * linkedlist.cpp - CSCI212 - Ass1 - Contains LinkedList class definition
 * Anthony Burchell-Bailey - 4245490 - /4/2013
 **********************************************************************/

#include <iostream>
#include <cstddef>
#include <string>
#include "linkedlist.h"
#include <iomanip>
using namespace std;

LinkedList::LinkedList()
{
  Head = NULL;	
}

LinkedList::~LinkedList()
{
	while(Head != NULL)
	{
		PNode curr = Head;
		Head = Head->next;
		delete curr;
	}
}

void LinkedList::AddToTail(string newdata, int newdate, int newtim, float newsize)
{
	PNode tmp, curr;

//	create a new customer and store the information
	tmp = new node;
	tmp->name = newdata;
	tmp->file = 1;
	tmp->ODate = newdate;
	tmp->OTim = newtim;
	tmp->NDate = newdate;
	tmp->NTim = newtim;
	tmp->Size = newsize;
	tmp->next = NULL;

//	add to the end of the list if the list is not empty

	if (Head != NULL)
	{
		curr = Head;
		while(((*curr).name).compare(newdata) != 0)
		{
			if(((*curr).name).compare(newdata) > 0)
			{
				tmp->next = Head;
				Head = tmp;
			}
			else
			{
				while(((*curr).name).compare(newdata) < 0 && curr->next)
				{
					curr = curr->next;
					if((*curr).name.compare(newdata) == 0)
					{
						break;
					}	
				}
				if(((*curr).name).compare(newdata) == 0)
				{
					break;
				}
				tmp->next = curr->next;
				curr->next = tmp;
				
			}
			break;
		}
		if(((*curr).name).compare(newdata) == 0)
		{
			(*curr).file += 1;
			(*curr).Size += newsize;
			if((*curr).ODate < newdate)
			{
				(*curr).ODate = newdate;
			}
			if((*curr).NDate > newdate)
			{
				(*curr).NDate = newdate;
			}
		}	
	}
	else
		Head = tmp;
}

void LinkedList::Print()//prints list. eg 12 34 21 26
{
	PNode ins = Head;
	double tsize = 0;
	string unit = "B";
	string Aname = "ALL";
	int afile = 0; 
	int aodate = ins->ODate;
	int andate = ins->NDate;
	int asize = 0;
	
	while(ins)
	{
		unit = "B";
		afile += ins->file;
		asize += ins->Size;
		tsize = ins->Size;
		if(ins->ODate < aodate)
		{
			aodate = ins->ODate;
		}
		if(ins->NDate > andate)
		{
			andate = ins->NDate;
		}
		cout << ins->name << "\t" << ins->file << "\t";
		cout << ins->ODate << "\t" << ins->NDate << "\t";
		if(tsize > 9999)
		{
			tsize = tsize / 1024;
			unit = "KB";
			if(tsize > 9999)
			{
				tsize = tsize / 1024;
				unit = "MB";
				if(tsize > 9999)
				{
					tsize = tsize / 1024;
					unit = "GB";
					if(tsize > 9999)
					{
						tsize = tsize / 1024;
						unit = "TB";
					}
				}
			}
		}
		cout << setprecision(4) << tsize << unit << "\n";
		ins = ins->next;
	}
	tsize = asize;
	unit = "B";
	if(tsize > 9999)
	{
		tsize = tsize / 1024;
		unit = "KB";
		if(tsize > 9999)
		{
			tsize = tsize / 1024;
			unit = "MB";
			if(tsize > 9999)
			{
				tsize = tsize / 1024;
				unit = "GB";
				if(tsize > 9999)
				{
					tsize = tsize / 1024;
					unit = "TB";
				}
			}
		}
	}
	
	cout << endl;
	cout << Aname << "\t" << afile << "\t" << aodate << "\t" << andate << "\t" << setprecision(4) << tsize << unit;
	cout << endl;
}

linkedlist.h

/**********************************************************************
 * linkedlist.h - CSCI212 - Ass1 - Contains LinkedList class declaration
 * Anthony Burchell-Bailey - 4245490 - /4/2013
 **********************************************************************/

#ifndef LIST_H_
#define LIST_H_

#include <cstddef>
#include <iostream>
#include <string>
using namespace std;

class LinkedList
{
  public:
		LinkedList();                           // constructor
		~LinkedList();                          // destructor
		void AddToTail(string, int, int, float);    // previous add function
		void Print();//prints list. eg 12 34 21 26
	private:
		struct node;
		typedef node *PNode;

		struct node{
			string name;
			PNode next;
			int file;
			int ODate;
			int OTim;
			
			int NDate;
			int NTim;
			float Size;
		};

		PNode Head;
		PNode Current;                       // Iterator pointer
};

#endif

main.cpp

/**********************************************************************
 * main.cpp - CSCI212 - Ass1 - main() driver for displaying ls statistics
 * Anthony Burchell-Bailey - 4245490 - /4/2013
 **********************************************************************/
 
#include <iostream>
#include <string>
#include <cstdlib>
#include "linkedlist.h"
using namespace std;
 
void AddToTail(string newdata, int newdate, int newtim, float newsize);    // previous add function
void Print();//prints list. eg 12 34 21 26
 
 
int main()
{
  cout << "Welcome to ls counter\n";
  cout << "User\tFiles\tOldest\t\tLatest\t\tTotSize\n";
	LinkedList list;
	
	string newdata = "ant", waste, time, hold;
	int newdate = 19930517;
	int newmon = 0;
	int newday = 0;
	int newyea = 0;
	int newtim = 0;
	char namebuffer[20], datetimebuffer[20], monthbuffer[20];
	float newsize = 20;
	cin.ignore(256,'\n');
	while(!cin.eof())
	{
		static char linebuffer[255];
		cin.getline(linebuffer, 255, '\n');
		sscanf(linebuffer, "%*s %*d %s %*s %f %s %d %s", namebuffer, &newsize, monthbuffer, &newday, datetimebuffer);
		newdata = string(namebuffer);
		if(monthbuffer == "Jan")
		{newmon = 100;}
		if(monthbuffer == "Feb")
		{newmon = 200;}
		if(monthbuffer == "Mar")
		{newmon = 300;}
		if(monthbuffer == "Apr")
		{newmon = 400;}
		if(monthbuffer == "May")
		{newmon = 500;}
		if(monthbuffer == "Jun")
		{newmon = 600;}
		if(monthbuffer == "Jul")
		{newmon = 700;}
		if(monthbuffer == "Aug")
		{newmon = 800;}
		if(monthbuffer == "Sep")
		{newmon = 900;}
		if(monthbuffer == "Oct")
		{newmon = 1000;}
		if(monthbuffer == "Nov")
		{newmon = 1100;}
		if(monthbuffer == "Dec")
		{newmon = 1200;}
		
		if(datetimebuffer[2] == ':')
		{
			time[0] = datetimebuffer[0];
			time[1] = datetimebuffer[1];
			time[2] = datetimebuffer[3];
			time[3] = datetimebuffer[4];
			newtim = atoi(time.c_str());
			newyea = 20130000;
		}
		else
		{
			time[0] = datetimebuffer[0];
			time[1] = datetimebuffer[1];
			time[2] = datetimebuffer[2];
			time[3] = datetimebuffer[3];
			newyea = atoi(time.c_str()) * 10000;
			newtim = 0;
		}
		newdate = newyea + newmon + newday;
		cout << newdata << " " << newdate << " " << newtim << " " << newsize << endl;
		list.AddToTail(newdata, newdate, newtim, newsize);
	}
	list.Print();//prints list
	cout << "\nThanks for using ls counter\n";
	return(1);
}