org.argeo.slc/src/test/java/org/argeo/slc/example/appli/ExampleAppli.java

   1 package org.argeo.slc.example.appli;
   2
   3 import java.io.BufferedReader;
   4 import java.io.FileReader;
   5 import java.io.FileWriter;
   6 import java.io.IOException;
   7
   8 public class ExampleAppli {
   9         private int skipFreq = 2;
  10
  11         public void filter(String[] args) {
  12                 if (args.length < 2) {
  13                         throw new RuntimeException(
  14                                         "Not enough arguments. Usage: <inpuit file> <output file>");
  15                 }
  16                 String input = args[0];
  17                 String output = args[1];
  18                 if (args.length > 2) {
  19                         skipFreq = Integer.parseInt(args[2]);
  20                 }
  21
  22                 try {
  23                         BufferedReader in = new BufferedReader(new FileReader(input));
  24                         FileWriter out = new FileWriter(output);
  25                         int count = 0;
  26                         String line;
  27                         while ((line = in.readLine()) != null) {
  28                                 if (count % skipFreq != 0) {
  29                                         out.write(line);
  30                                         out.write("\n");
  31                                 }
  32                                 count++;
  33                         }
  34                         out.close();
  35                         in.close();
  36                 } catch (IOException e) {
  37                         throw new RuntimeException("Appli failed", e);
  38                 }
  39         }
  40
  41         public void setSkipFreq(int skipFreq) {
  42                 this.skipFreq = skipFreq;
  43         }
  44
  45 }