[prg] String to Poop 1.0 converter

/*
 * String to Poop 1.0 Converter
 * @author Maximilian Krause
 * @since 11-07-2015
 * @ver 1.1
 *
 * Changelog
 * 1.1
 * - Added uppercase/lowercase output through char uppercase detection
 *
 * This converter is capable of getting a String from a file and outputting the equivalent for Poop 1.0. Due to Poops limits, the Poop 1.0 output will not support spaces but will write every word into a new line.
 *
 * Licensed under CC-BY 4.0.
 */
package de.maxkrause;
//importing needed tools
import java.io.*;
import java.util.Scanner;

public class main {
    static boolean debug = false; //debug bool, activate if you want debug output
    public static void main(String[] args) {
        System.out.println("String to Poop 1.0 Translator, made by Maximilian Krause. Licensed under CC-BY 4.0. Please input a file without any new-lines. Change new-lines to spaces if needed. Poop 1.0 doesn't support new-lines, every new word will get into a new line anyway.");;
        Scanner in = new Scanner(System.in); //opening a scanner to get the input filename
        //setting some needed, accessible vars
        int curIndex = 0;
        String chars = "0123456789abcdefghijklmnopqrstuvwxyz.,-!?+*<>#@$ۤ%&/()[]"; //Poop 1.0 supported characters
        String input = "";
        String output = "";
        boolean gotFile = false;
        String str_input_file = "";
        while(!gotFile){ //always asking for input until a valid file was opened
            System.out.print("File with content to translate: ");
            str_input_file = in.next();
            try {
                Scanner input_file = new Scanner(new FileReader(str_input_file)); //opening a new scanner to get the file content
                input = input_file.nextLine(); //reading the file content into input
                gotFile = true; //closing the loop
                //closing the scanners
                input_file.close();
                in.close();
                while(input.endsWith(" ")){
                    input = input.substring(0, input.length()-2); //removing a last space if found
                }
                System.out.println("Got input: " + input);
            } catch (FileNotFoundException e) {
                System.out.println("File not found."); //file not found, looping back
            }
        }
        System.out.println("Now calculating. Please wait...");
        for(int i = 0; (input.length()) > i; i++){ //starting calculation process
            if(debug){
                System.out.println("[DEBUG] Now checking character #" + i + ", which is " + input.charAt(i) + ", which got the Poop index #" + chars.indexOf(input.toLowerCase().charAt(i)));
            }
            if(input.charAt(i) == ' '){ //checking if current character is a space
                if(debug){
                    System.out.println("Received a space character, printing sniff\\nflush\\n.");
                }
                output += "sniff\nflush\n"; //if so, doing a "sniff" and a "flush" to print the last word
                curIndex = 0; //resetting the current Poop 1.0 character index, as flush does so as well
            }else{
                boolean isPuke = false;
                if(debug){
                    System.out.println("[DEBUG] Previous index: " + curIndex);
                }
                int eats = chars.indexOf(input.toLowerCase().charAt(i)) - curIndex;
                curIndex = chars.indexOf(input.toLowerCase().charAt(i));
                if(debug){
                    System.out.println("[DEBUG] Got the command for " + eats + " eats, checking if I should puke.");
                }
                if(eats < 0){
                    //eats is negative, which means that we need to go back on the Poop 1.0 index -> puke instead of eat
                    eats = eats * -1;
                    if(debug){
                        System.out.println("[DEBUG] Puking " + curIndex + " times.");
                    }
                    isPuke = true;
                }
                //printing the needed times of eat or puke
                if(isPuke){
                    output += new String(new char[eats]).replace("\0", "puke ");
                }else{
                    output += new String(new char[eats]).replace("\0", "eat ");
                }
                //checking if we needed an uppercase letter
                if(Character.isUpperCase(input.charAt(i))){
                    output += "\nPOOP\n";
                }else{
                    output += "\npoop\n";
                }
            }
        }
        //last String output
        output += "sniff";
        //writing to output file (input + "_poo")
        Writer writer = null;
        try {
            writer = new BufferedWriter(new OutputStreamWriter(
                  new FileOutputStream(str_input_file + "_poo"), "utf-8"));
            writer.write(output);
        } catch (IOException ex) {} finally {
           try {writer.close();} catch (Exception ex) {}
        }
        System.out.println("Output written to " + str_input_file + "_poo.");
    }

}