events search in C++

search.cpp

#include <string>
#include <filesystem>
#include <vector>
#include <cstdio>
#include <cstdlib>

struct EventPos {
	size_t ind = 0;
	size_t size = 0;

	void clear() {
		ind = 0;
		size = 0;
	}
};

static void generateEvents(const std::string& data, char lineSep, std::vector<EventPos>& events) {
	bool currentMatch = false;
	EventPos cur;
	for (size_t i = 0; i < data.size(); ++i)
	{
		if (currentMatch) {
			if (data[i] == lineSep) {
				events.push_back(cur);
				cur.clear();
				currentMatch = false;
			} else {
				cur.size++;
			}
		} else {
			if (data[i] != lineSep) {
				cur.ind = i;
				currentMatch = true;
			}
		}
	}
}

int main(int argc, char const *argv[])
{
	const std::string foo = "hello \n sir \n";
	std::vector<EventPos> pairs;
	generateEvents(foo, '\n', pairs);
	std::printf("%zu\n", pairs.size());
	const auto found = foo.find("hello");
	const auto found2 = foo.find("hello", found + 5);
	std::printf("%zu %zu\n", found, found2);
	std::printf("%s\n", found2 == foo.npos ? "not found" : "found");
	return 0;
}