bgrep.cpp


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#include <stdio.h>
#include <stdlib.h>
#include "fileutils.h"

#define THRESHOLD 20480

int main(int argc, char ** argv) {
    unsigned int p = strtol(argv[1], 0, 0);
    char * fn = argv[2];
    FILE * f = fopen(fn, "r+");
    
    if (!f) {
	printf("Bleeh.\n");
	exit(-1);
    }
    int l = filesize(f), i;
    char * b = (char *) malloc(l);
    
    fread(b, 1, l, f);
    
    for (i = 0; i < l - 3; i++) {
	unsigned int r = *((unsigned int *) &(b[i]));
	if (r == p) {
	    printf("Found 0x%08x at %i = 0x%08x in %s\n", p, i, i, fn);
	}
    }
    
    fclose(f);
}