50 lines
2 KiB
Java
50 lines
2 KiB
Java
import java.nio.file.Paths;
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import java.util.Scanner;
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import java.io.IOException;
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import java.util.Stack;
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public class Day07A {
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public static void main(String[] args) {
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Stack<Directory> breadCrumbs = new Stack<Directory>();
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try (Scanner inputFile = new Scanner(Paths.get("input.txt"))) {
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boolean passingBack = false;
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String[] command = new String[3];
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while (inputFile.hasNext() || passingBack) {
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if (!passingBack) {
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command = inputFile.nextLine().split(" ");
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}
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passingBack = false;
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switch (command[1]) {
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case "cd": {
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if (command[2].compareTo("..") == 0) {
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breadCrumbs.pop();
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} else if (breadCrumbs.empty()) {
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breadCrumbs.push(new Directory(command[2], command[2]));
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} else {
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breadCrumbs.push(breadCrumbs.peek().moveToSubDir(command[2]));
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}
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break;
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}
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case "ls": {
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command = inputFile.nextLine().split(" ");
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while (!inputFile.hasNext("$") && inputFile.hasNext()) {
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if (command[0].compareTo("dir") == 0) {
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breadCrumbs.peek().addDir(command[1]);
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} else if (command[0].compareTo("$") == 0) {
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break;
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} else{
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breadCrumbs.peek().addFile(Integer.parseInt(command[0]));
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}
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command = inputFile.nextLine().split(" ");
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}
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passingBack = true;
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}
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}
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}
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} catch (IOException e) {e.printStackTrace();}
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while (breadCrumbs.size() > 1) {
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breadCrumbs.pop();
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}
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}
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}
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