main/justify.java

   1 package be.nikiroo.utils.main;
   2
   3 import java.util.ArrayList;
   4 import java.util.List;
   5 import java.util.Scanner;
   6
   7 import be.nikiroo.utils.StringUtils;
   8 import be.nikiroo.utils.StringUtils.Alignment;
   9
  10 /**
  11  * Text justification (left, right, center, justify).
  12  *
  13  * @author niki
  14  */
  15 public class justify {
  16         /**
  17          * Syntax: $0 ([left|right|center|justify]) (max width)
  18          * <p>
  19          * <ul>
  20          * <li>mode: left, right, center or full justification (defaults to left)</li>
  21          * <li>max width: the maximum width of a line, or "" for "no maximum"
  22          * (defaults to "no maximum")</li>
  23          * </ul>
  24          *
  25          * @param args
  26          */
  27         public static void main(String[] args) {
  28                 int width = -1;
  29                 StringUtils.Alignment align = Alignment.LEFT;
  30
  31                 if (args.length >= 1) {
  32                         align = Alignment.valueOf(args[0].toUpperCase());
  33                 }
  34                 if (args.length >= 2) {
  35                         width = Integer.parseInt(args[1]);
  36                 }
  37
  38                 Scanner scan = new Scanner(System.in);
  39                 scan.useDelimiter("\r\n|[\r\n]");
  40                 try {
  41                         List<String> lines = new ArrayList<String>();
  42                         while (scan.hasNext()) {
  43                                 lines.add(scan.next());
  44                         }
  45
  46                         for (String line : StringUtils.justifyText(lines, width, align)) {
  47                                 System.out.println(line);
  48                         }
  49                 } finally {
  50                         scan.close();
  51                 }
  52         }
  53 }