import std.stdio;
import std.file;
import std.regex;
import std.datetime;
import std.datetime.stopwatch : StopWatch, AutoStart;
import core.stdc.stdlib;

void measure(string data, string pattern) {
    int count = 0;

    auto sw = StopWatch(AutoStart.yes);

    foreach (m; data.matchAll(regex(pattern))) {
        count++;
    }

    sw.stop();
    double end = sw.peek().total!"nsecs" / 1e6;

    printf("%f - %d\n", end, count);
}

void main(string [] args) {
    if(args.length != 2) {
        writeln("Usage: benchmark <filename>");
        exit(1);
    }

    string data = readText(args[1]);

    // Email
    measure(data, r"[\w\.+-]+@[\w\\.-]+\.[\w\.-]+");

    // URI
    measure(data, r"[\w]+://[^/\s?#]+[^\s?#]+(?:\?[^\s#]*)?(?:#[^\s]*)?");

    // IP
    measure(data, r"(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9])");
}