#include <iostream>
#include <fstream>
#include <cstring>
#include <unistd.h>
#include <signal.h>
#include <chrono>

using namespace std;

int main(int argc, char **argv)
{
	auto startmain = chrono::high_resolution_clock::now();
	if(argc != 5)
	{
		cout <<"usage: ./partitioner.out <path-to-file> <pattern> <search-start-position> <search-end-position>\nprovided arguments:\n";
		for(int i = 0; i < argc; i++)
			cout << argv[i] << "\n";
		return -1;
	}
	
	char *file_to_search_in = argv[1];
	char *pattern_to_search_for = argv[2];
	int len = sizeof(pattern_to_search_for);
	int search_start_position = atoi(argv[3]);
	int search_end_position = atoi(argv[4]);
	int find = 0;
	ifstream file(file_to_search_in, ios::binary);
	//TODO
	for(int i = search_start_position; i < search_end_position; ++i) {
		char *buffer = new char[len];
		file.seekg(i);
		file.read(buffer, len);
		if(!strcmp(buffer, pattern_to_search_for)) {
			cout << "[1] found at" << " " << i << endl;
			find = 1;
		}
	}
	if(find == 0) cout << "[1] didn't find\n";
	auto endmain = std::chrono::high_resolution_clock::now();
	chrono::duration<double> mainduration = endmain - startmain;
	cout << mainduration.count() << endl;
	return 0;
}