Reference no: EM132207514

Question :

Write a program that accepts two command line arguments. The first is the name of a file that is to be used as the input file and the second is the name of the output file.

The program is to base-64 encode the first file, which is to be treated as a binary file, into the second. The first line of the output file, which is a text file, should contain the name of the first file (so that the reconstructed data can be placed in a file of the correct name later).

Your program should print to the console the total number of bytes contained in the input file.

This is what i have so far

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

int BUFFER_SIZE = 3;
FILE *source;
FILE *destination;
int n;
int count = 0;
int written = 0;

char map(unsigned value)
{
if (value < 26) return 'A' + value;
if (value < 52) return 'a' + value - 26;
if (value < 62) return '0' + value - 52;
if (62 == value) return '+';
if (63 == value) return '/';

return '?';
}

unsigned unmap(char c)
{
if ('/' == c) return 63;
if ('+' == c) return 62;
if (isdigit(c)) return 52 + (c - '0');
if (islower(c)) return 26 + (c - 'a');
if (isupper(c)) return 0 + (c - 'A');

return 0xFFFFFFFF;
}

int main(void)
{
char fname[128];
printf("Enter .txt file name to read\n");
scanf("%s",fname);
strcat(fname,".txt");
source = fopen(fname,"rb");

char outname[128];
printf("Enter .txt file name to print\n");
scanf("%s",outname);
strcat(outname,".txt");
destination = fopen(outname,"wb");

unsigned char buffer[BUFFER_SIZE];
unsigned data;

int i = 0;

if (source) {

while (!feof(source)) {

n = fread(buffer, 1, BUFFER_SIZE, source);
count += n;

data =buffer[0];


// printf("MSG : ");
for (int i = 0; i < 3; i++)
{
//
// buffer[i] = map(buffer[i]);
printf("\n%d", buffer[i]);
}
// printf("The contents of buffer[] are %s\n", buffer);
fwrite(buffer, 1, n, destination);
}
printf("\n%d bytes read from library.\n", count);
} else {
printf("fail\n");
}

// for (int i = 0; i < lengthOfFile; i++)
// {
// unsigned value = (data >> (18 - 6 * i)) & 077;

// chars[i] = map(value);
// }

// printf("MSG : ");
// for (int i = 0; i < lengthOfFile; i++)
// {

// printf("%c", chars[i]);
// }
// printf("\n");

// data = 0;
// for (int i = 0; i < lengthOfFile; i++)
// {
// unsigned value = unmap(chars[i]);

// data <<= 6;
// data += value;
// }

// printf("DATA: %o\n", data);

fclose(source);
fclose(destination);

return EXIT_SUCCESS;
}

in the input file i have -- 062434752

it should print to the output file -- yjnq