/****************************

* Project 1

* Output Test File 4

* Good Student

* CS 3113

* Dr. Hougan

****************************/





//Include Files



#include <stdio.h>

#include <stdlib.h>

#include <sys/types.h>

#include <sys/stat.h>

#include "out_test.h"



/****************************/



//Main function

//Takes in a file name, then

//writes it to another file 1000

//times, then waits 5 seconds,

// keeping track of the time

//it takes each time. Each write

//backs up and writes the file again.

//Do this 100

//times with a 5 second break in

//between each time.



int main(int argc, char* argv[])

{



	//variable declarations

	char* inputfilename;

	char* outputfilename;

	float timeStore[100];

	char inputStore[100000];

	FILE *input, *output;

	struct stat fileStats;

	int i = 0, j = 0;

	

	//if command line does not contain filename, exit

	if (argc < 3)

	{

		printf("Too few arguments given.\nCorrect syntax: %s <filename_input> <filename_output>\n", argv[0]);

		exit(0);

	}

	

	//read in the file given in the command line

	inputfilename = argv[1];

	outputfilename = argv[2];

	

	if ((output = fopen(outputfilename, "r")) != NULL)

	{

		printf("Output file already exists, please enter a new output file.\n");

		exit(0);

	}

	if ((output = fopen(outputfilename, "w+")) == NULL)

	{

		printf("The output file could not be opened to write.");

		exit(0);

	}

	

	

	if ((input = fopen(inputfilename, "r")) == NULL)

	{

		printf("Either the file %s does not exist, or there has been a problem opening it. Please try again.");

	}

	else

	{

		stat(inputfilename, &fileStats);

		if (fileStats.st_size < 100000)

		{

			fprintf(stderr, "File Size: %d\n", fileStats.st_size);

			while ((inputStore[i] = fgetc(input)) != EOF)

			{

				i++;

			}

			for(j = 0; j < 100; j++)

			{

				fprintf(stderr, "Trial run %d:\n", j+1);

				timeStore[j] = fileToFile(inputStore, 

output, 1000, i, 1);

				fprintf(stderr, "Overall Time Delta: %.1f ticks\n\n", timeStore[j]);

				rewind(output);

				sleep(5);

			}

		}

		else 

		{

			printf("File too large for this program, please use something under 100k.");

		}

		fclose(output);

		fclose(input);

		printf("Final timing list:\n");

		for (j = 0; j < 100; j++)

		{

			fprintf(stderr, "%f\n", timeStore[j]);

		}

	}

	return 0;

}