/* 
2 * Program featuring straight up arrays and file IO to read and reverse copy a lyric. 
3 */
package arrayplay;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.io.IOException;
import java.util.Scanner;


public class ReverseCopy {
     public static void main(String[] args) throws FileNotFoundException, IOException {
          String inputFileName = "ForeverYoung.text";
          String outputFileName = "ForeverYoungReversed.text";
          String[] words = readWordsFromFile(inputFileName);
          writeWordsToFile(words,outputFileName);
          }
private static final int LIMIT = 1000;

         private static String[] readWordsFromFile(String inputFileName) throws FileNotFoundException {
         // Equate a scanner with the input file
          Scanner scanner = establishScanner(inputFileName);
          // Read the words from the file into an oversized array
          String[] temp = new String[LIMIT];
          int index = 0;
          while ( scanner.hasNext() ) {
              String word = scanner.next();
              temp[index] = word;
              index = index + 1;
              }
          int wordCount = index;
          // Transfer the words to a perfectly sized array
          String[] words = new String[wordCount];
          for ( int x = 0; x < wordCount; x = x + 1 ) {
              words[x] = temp[x];
              }
          // Return the words
          return words;
          }

         private static void writeWordsToFile(String[] words, String outputFileName) throws IOException {
          // Equate a printer with an output file
          PrintWriter printer = getPrintWriter(outputFileName);

          // Print the words to the file
          for ( int x = words.length-1; x >= 0; x = x - 1 ) {
              printer.println(words[x]);
              }
          printer.close();
          }

         private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
          String fullFileName = createFullFileName(inputFileName);
          return new Scanner(new File(fullFileName));
          }

         private static PrintWriter getPrintWriter(String outputFileName) throws FileNotFoundException {
          String fullFileName = createFullFileName(outputFileName);
          PrintWriter printer = new PrintWriter(fullFileName);
          return printer;
          }

         // Create the full file name for a simple file name, assuming that it will be
         // found in the CS1Files/data subdirectory of the user’s home directory.
         private static String createFullFileName(String fileName) {
             String separator = System.getProperty("file.separator");
              String home = System.getProperty("user.home");
              String path = home + separator + "CS1Files" + separator + "data" + separator;
              String fullFileName = path + fileName;
              return fullFileName;
        }
 }