Ejemplo n.º 1
0
  /** Output put the prompt + the current buffer */
  public final void drawLine() throws IOException {
    if (prompt != null) {
      printString(prompt);
    }

    printString(buf.buffer.toString());

    if (buf.length() != buf.cursor) // not at end of line
    back(buf.length() - buf.cursor); // sync
  }
Ejemplo n.º 2
0
  /**
   * Redraw the rest of the buffer from the cursor onwards. This is necessary for inserting text
   * into the buffer.
   *
   * @param clear the number of characters to clear after the end of the buffer
   */
  private final void drawBuffer(final int clear) throws IOException {
    // debug ("drawBuffer: " + clear);
    char[] chars = buf.buffer.substring(buf.cursor).toCharArray();
    if (mask != null) Arrays.fill(chars, mask.charValue());

    printCharacters(chars);

    clearAhead(clear);
    back(chars.length);
    flushConsole();
  }
Ejemplo n.º 3
0
  /** Clear the echoed characters for the specified character code. */
  int clearEcho(int c) throws IOException {
    // if the terminal is not echoing, then just return...
    if (!terminal.getEcho()) {
      return 0;
    }

    // otherwise, clear
    int num = countEchoCharacters((char) c);
    back(num);
    drawBuffer(num);

    return num;
  }
Ejemplo n.º 4
0
  /**
   * Output the specified {@link Collection} in proper columns.
   *
   * @param stuff the stuff to print
   */
  public void printColumns(final Collection stuff) throws IOException {
    if ((stuff == null) || (stuff.size() == 0)) {
      return;
    }

    int width = getTermwidth();
    int maxwidth = 0;

    for (Iterator i = stuff.iterator();
        i.hasNext();
        maxwidth = Math.max(maxwidth, i.next().toString().length())) {;
    }

    StringBuffer line = new StringBuffer();

    int showLines;

    if (usePagination) showLines = getTermheight() - 1; // page limit
    else showLines = Integer.MAX_VALUE;

    for (Iterator i = stuff.iterator(); i.hasNext(); ) {
      String cur = (String) i.next();

      if ((line.length() + maxwidth) > width) {
        printString(line.toString().trim());
        printNewline();
        line.setLength(0);
        if (--showLines == 0) { // Overflow
          printString(loc.getString("display-more"));
          flushConsole();
          int c = readVirtualKey();
          if (c == '\r' || c == '\n') showLines = 1; // one step forward
          else if (c != 'q') showLines = getTermheight() - 1; // page forward

          back(loc.getString("display-more").length());
          if (c == 'q') break; // cancel
        }
      }

      pad(cur, maxwidth + 3, line);
    }

    if (line.length() > 0) {
      printString(line.toString().trim());
      printNewline();
      line.setLength(0);
    }
  }
Ejemplo n.º 5
0
  /** Clear ahead the specified number of characters without moving the cursor. */
  private final void clearAhead(final int num) throws IOException {
    if (num == 0) {
      return;
    }

    // debug ("clearAhead: " + num);

    // print blank extra characters
    printCharacters(' ', num);

    // we need to flush here so a "clever" console
    // doesn't just ignore the redundancy of a space followed by
    // a backspace.
    flushConsole();

    // reset the visual cursor
    back(num);

    flushConsole();
  }