package org.tartarus.snowball;

 import java.lang.reflect.Method;

 import java.io.Reader;

 import java.io.Writer;

 import java.io.BufferedReader;

 import java.io.BufferedWriter;

 import java.io.FileInputStream;

 import java.io.InputStreamReader;

 import java.io.OutputStreamWriter;

 import java.io.OutputStream;

 import java.io.FileOutputStream;

 public class TestApp {

     private static void usage()

     {

         System.err.println("Usage: TestApp <algorithm> <input file> [-o <output file>]");

     }

     public static void main(String [] args) throws Throwable {

         if (args.length < 2) {

             usage();

             return;

         }

         Class stemClass = Class.forName("org.tartarus.snowball.ext." +

                                         args[0] + "Stemmer");

         SnowballStemmer stemmer = (SnowballStemmer) stemClass.newInstance();

         Reader reader;

         reader = new InputStreamReader(new FileInputStream(args[1]));

         reader = new BufferedReader(reader);

         StringBuffer input = new StringBuffer();

         OutputStream outstream;

         if (args.length > 2) {

             if (args.length >= 4 && args[2].equals("-o")) {

                 outstream = new FileOutputStream(args[3]);

             } else {

                 usage();

                 return;

             }

         } else {

             outstream = System.out;

         }

         Writer output = new OutputStreamWriter(outstream);

         output = new BufferedWriter(output);

         int repeat = 1;

         if (args.length > 4) {

             repeat = Integer.parseInt(args[4]);

         }

         Object [] emptyArgs = new Object[0];

         int character;

         while ((character = reader.read()) != -1) {

             char ch = (char) character;

             if (Character.isWhitespace((char) ch)) {

                 if (input.length() > 0) {

                     stemmer.setCurrent(input.toString());

                     for (int i = repeat; i != 0; i--) {

                         stemmer.stem();

                     }

                     output.write(stemmer.getCurrent());

                     output.write('\n');

                     input.delete(0, input.length());

                 }

             } else {

                 input.append(Character.toLowerCase(ch));

             }

         }

         output.flush();

     }

 }