| 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 | // TODO: move to utils? |
| 39 | List<String> lines = new ArrayList<String>(); |
| 40 | Scanner scan = new Scanner(System.in); |
| 41 | scan.useDelimiter("[\r\n]"); |
| 42 | try { |
| 43 | StringBuilder previous = null; |
| 44 | StringBuilder tmp = new StringBuilder(); |
| 45 | while (scan.hasNext()) { |
| 46 | String current = scan.next(); |
| 47 | tmp.setLength(0); |
| 48 | for (String word : current.split(" ")) { |
| 49 | if (word.isEmpty()) { |
| 50 | continue; |
| 51 | } |
| 52 | |
| 53 | if (tmp.length() > 0) { |
| 54 | tmp.append(' '); |
| 55 | } |
| 56 | tmp.append(word.trim()); |
| 57 | } |
| 58 | current = tmp.toString(); |
| 59 | |
| 60 | if (previous == null) { |
| 61 | previous = new StringBuilder(); |
| 62 | } else { |
| 63 | if (current.isEmpty() || isFullLine(previous)) { |
| 64 | lines.add(previous.toString()); |
| 65 | previous.setLength(0); |
| 66 | } else { |
| 67 | previous.append(' '); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | previous.append(current); |
| 72 | } |
| 73 | |
| 74 | if (previous != null) { |
| 75 | lines.add(previous.toString()); |
| 76 | } |
| 77 | } finally { |
| 78 | scan.close(); |
| 79 | } |
| 80 | |
| 81 | // TODO: supports bullet lines "- xxx" and sub levels |
| 82 | for (String line : lines) { |
| 83 | for (String subline : StringUtils.justifyText(line, width, align)) { |
| 84 | System.out.println(subline); |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | static private boolean isFullLine(StringBuilder line) { |
| 90 | return line.length() == 0 // |
| 91 | || line.charAt(line.length() - 1) == '.' |
| 92 | || line.charAt(line.length() - 1) == '"' |
| 93 | || line.charAt(line.length() - 1) == 'ยป'; |
| 94 | } |
| 95 | } |