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#include <cs50.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
int main(int argc, char *argv[])
{
if (argc != 2) {
printf("Usage: ./recover infile\n");
return 1;
}
// Remember filenames
char *infile = argv[optind];
// Open input file
FILE *inptr = fopen(infile, "r");
if (inptr == NULL)
{
printf("Could not open %s.\n", infile);
return 1;
}
int files = 0;
int blocks = (int)ceil(sizeof(infile)/512.0);
for (int i = 0; i < blocks, i++)
{
if (fread())
}
/*
files = 0
for (file length)
{
if (first 3 bytes are 0xff 0xd8 0xff AND 4th byte is 0xe* (* denotes anything))
{
this is a photo; remember the pointer (call it point)
int photolength = 0;
// look through the blocks ahead of this one for a new photo
for (file length left)
{
photolength++;
if (first 3 bytes are 0xff 0xd8 0xff AND 4th byte is 0xe* (* denotes anything))
{
// this is the photo length
break
}
}
filename = files.jpg
files++
Open output file with name (filename)
// make buffer space to store the data
uint32_t data[photolength][16];
// read the photo to data in blocks of 32 bits
fread(&data, sizeof(uint32_t), 16 * photolength, inptr);
// write the photo from data
fwrite(&data, sizeof(uint32_t), 16 * photolength, point);
// Close the photo file
// repeat this process for other photos
}
}
*/
fclose(inptr);
}
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