package pl.pl;

import java.io.*;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Scanner;
import java.util.stream.Stream;

class Main {

    private static final String FILE = "/home/LABPK/jsildatk/Pobrane/test";

    private static void bufferedReadLine() throws IOException {
        int counter = 0;
        long start = System.nanoTime();
        try ( BufferedReader br = Files.newBufferedReader(Paths.get(FILE)) ) {
            String line;
            while ( (line = br.readLine()) != null ) {
                counter++;
            }
        }
        long end = System.nanoTime();
        System.out.println("BUFFERED READER READ LINE: " + counter + " czas: " + (end - start));
    }

    private static void bufferedLines() throws IOException {
        long start = System.nanoTime();
        int lines = 0;
        try ( BufferedReader br = Files.newBufferedReader(Paths.get(FILE)) ) {
            lines = (int) br.lines().count();
        }
        long end = System.nanoTime();
        System.out.println("BUFFERED READER LINES: " + lines + " czas: " + (end - start));
    }

    private static void scannerNextLine() throws IOException {
        long start = System.nanoTime();
        Scanner scanner = new Scanner(Paths.get(FILE));
        int counter = 0;
        while ( scanner.hasNext() ) {
            scanner.nextLine();
            counter++;
        }
        long end = System.nanoTime();
        System.out.println("SCANNER: " + counter + " czas: " + (end - start));
    }

    private static void inputStream() throws IOException {
        long start = System.nanoTime();
        InputStream is = new BufferedInputStream(new FileInputStream(FILE));
        int counter = 0;
        byte[] c = new byte[1024];
        int readChars = 0;
        while ( (readChars = is.read(c)) != -1 ) {
            for ( int i = 0; i < readChars; i++ ) {
                if ( c[i] == '\n' ) {
                    counter++;
                }
            }
        }
        long end = System.nanoTime();
        System.out.println("INPUT READER: " + counter + " czas: " + (end - start));
    }

    public static void main(String[] args) throws IOException {
        inputStream();
        bufferedReadLine();
        bufferedLines();
        scannerNextLine();
    }