Vis.java Source code

Introduction

Here is the source code for Vis.java

Source

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 * Vis - make special characters visible.
 */
public class Vis {

    public static void main(String[] av) {
        Vis v = new Vis();
        if (av.length == 0)
            v.process(new BufferedReader(new InputStreamReader(System.in)));
        else
            for (int i = 0; i < av.length; i++)
                try {
                    v.process(new BufferedReader(new FileReader(av[i])));
                } catch (FileNotFoundException e) {
                    System.err.println(e);
                }
    }

    /** print one file, given an open BufferedReader */
    public void process(BufferedReader is) {
        try {
            String inputLine;

            while ((inputLine = is.readLine()) != null) {
                for (int i = 0; i < inputLine.length(); i++) {
                    char c = inputLine.charAt(i);
                    switch (c) {
                    case '\t':
                        System.out.print("\\t");
                        break;
                    case '\r':
                        System.out.print("\\r");
                        break;
                    case '\n':
                        System.out.print("\\n");
                        break;
                    default:
                        System.out.print(c);
                        break;
                    }
                }
                System.out.println();
            }
            is.close();
        } catch (IOException e) {
            System.out.println("IOException: " + e);
        }
    }
}