How to use org.crsh.text

/**
 * Compute the current merged style.
 *
 * @return the merged style
 */
private Style.Composite getMerged() {
 Style.Composite merged = Style.style();
 for (Style s : stack) {
  merged = (Style.Composite)merged.merge(s);
 }
 return merged;
}

@Override
public Screenable append(CharSequence csq, int start, int end) throws IOException {
 if (start < end) {
  adapter.send();
  buffer.append(csq, start, end);
 }
 return this;
}

public void render(RenderAppendable to) {
 LineRenderer renderer = renderer();
 // For now height - 1 because of the char that goes to the line in some impl
 LineReader reader = renderer.reader(to.getWidth(), to.getHeight() - 1);
 if (reader != null) {
  while (reader.hasLine()) {
   reader.renderLine(to);
   to.append('\n');
  }
 }
}

public final void println(Object obj, Color foreground, Color background) {
 print(obj, Style.style(foreground, background));
 println();
}

/**
 * Renders this object to the provided output.
 *
 * @param out the output
 */
public final void render(RenderAppendable out) {
 LineReader renderer = reader(out.getWidth());
 if (renderer != null) {
  while (renderer.hasLine()) {
   renderer.renderLine(out);
   out.append('\n');
  }
 }
}

public void testNextRow1() throws Exception {
 TestBuffer tmp = new TestBuffer(2, 2);
 VirtualScreen buffer = new VirtualScreen(tmp);
 buffer.append("abcd");
 assertTrue(buffer.isRefresh());
 assertTrue(buffer.paint().isPainted());
 assertFalse(buffer.nextRow());
 assertTrue(buffer.isPainted());
}

private void assertBuffer(int width, int height, String actual, String... test) throws IOException {
 TestBuffer tmp = new TestBuffer(width, height);
 VirtualScreen buffer = new VirtualScreen(tmp);
 for (String a : test) {
  buffer.append(a);
  buffer.paint();
  assertTrue(buffer.isPainting() || buffer.isPainted());
 }
 assertEquals(actual, tmp.toString());
}

 public void assertPainted(String s1, String s2) throws Exception {
  TestBuffer tmp = new TestBuffer(2, 2);
  VirtualScreen buffer = new VirtualScreen(tmp);
  buffer.append(s1);
  assertTrue(buffer.isRefresh());
  assertTrue(buffer.paint().isPainting());
  buffer.append(s2);
  assertTrue(buffer.isPainting());
  assertTrue(buffer.paint().isPainted());
 }
}

public void testBlend() throws IOException {
 assertReader(new ScreenBuffer().append(Color.red.fg(),"foo", Color.red.fg(), "bar"), Color.red.fg(), "foo", "bar");
}

public void testNextRow0() throws Exception {
 TestBuffer tmp = new TestBuffer(2, 2);
 VirtualScreen buffer = new VirtualScreen(tmp);
 assertTrue(buffer.isRefresh());
 assertTrue(buffer.paint().isPainting());
 assertFalse(buffer.nextRow());
 assertTrue(buffer.isPainting());
}

public void testSimple() {
 assertReader(new ScreenBuffer().append("a"), "a");
 assertReader(new ScreenBuffer().append(RED, "a"), RED, "a");
}

 public Style.Composite blink(Boolean value) {
  return Style.style(this).blink(value);
 }
}

public void flush() throws IOException {
 send();
 out.flush();
}

public void testRefresh() throws Exception {
 TestBuffer tmp = new TestBuffer(2, 2);
 VirtualScreen buffer = new VirtualScreen(tmp);
 tmp.width = 3;
 assertFalse(buffer.update());
}

public final void print(Object obj, Decoration decoration, Color foreground) {
 print(obj, Style.style(decoration, foreground));
 println();
}

public void testConcatenation() {
 assertReader(new ScreenBuffer().append(RED).append(new ScreenBuffer().append("a")), RED, "a");
 assertReader(new ScreenBuffer().append(new ScreenBuffer().append(RED)).append("a"), RED, "a");
}

@Override
public Screenable append(char c) throws IOException {
 adapter.send();
 buffer.append(c);
 return this;
}

public final void println(Object obj, Decoration decoration) {
 print(obj, Style.style(decoration));
 println();
}

public final void print(Object obj, Decoration decoration, Color foreground, Color background) {
 print(obj, Style.style(decoration, foreground, background));
 println();
}

public final void println(Object obj, Decoration decoration, Color foreground, Color background) {
 print(obj, Style.style(decoration, foreground, background));
 println();
}