#include <dlfcn.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/time.h>


#define SCANSIZE 8192


typedef int (*fsearch_cb)(int pos, char *descr, char *cb_data);
typedef int (*fsearch_fun)(int startstate, fsearch_cb cb, char * cb_data, char *buf, int buflen);


int cb(int pos, char *descr, char *cb_data)
{
	printf("Found [%s] at pos %i\n",descr,(*(size_t *)cb_data)+pos);
	return 0;
}

int main(int argc, char **argv) 
{
	void *handle;
	fsearch_fun fsearch;
	char *error;
	char *buf;
	char *p;
	size_t size;
	int state;
	size_t bufofs;
        struct timeval before,after;
	double duration;



	handle = dlopen ("./fsearch.so", RTLD_LAZY);
	if (!handle) {
		fprintf (stderr, "%s\n", dlerror());
		exit(1);
	}

	fsearch = dlsym(handle, "fsearch");
	if ((error = dlerror()) != NULL)  {
		fprintf (stderr, "%s\n", error);
		exit(1);
	}
	
	buf=malloc(SCANSIZE);
	if (! buf) {
		perror("malloc");
		exit(2);
	}
	
	state=0;
	bufofs=0;

	gettimeofday(&before, NULL);
	while ((state >= 0) && (size=read(0,buf,SCANSIZE))) {
		state=fsearch(state,cb,(char *)&bufofs,buf,size);
		bufofs+=size;
	}
	gettimeofday(&after, NULL);
                

	duration = (double) after.tv_sec-before.tv_sec + (after.tv_usec-before.tv_usec) * 1e-6;


	printf("\nSearched %i bytes in %.3fs. (Estimated rate : %.1f Mo/s)\n",bufofs,duration, ((double)bufofs)/(1024*1024*duration));

}