func()

in terminal.go [649:692]

• 32 lines of code
• 8 McCabe index (conditional complexity)

func (t *Terminal) Write(buf []byte) (n int, err error) {
	t.lock.Lock()
	defer t.lock.Unlock()

	if t.cursorX == 0 && t.cursorY == 0 {
		// This is the easy case: there's nothing on the screen that we
		// have to move out of the way.
		return writeWithCRLF(t.c, buf)
	}

	// We have a prompt and possibly user input on the screen. We
	// have to clear it first.
	t.move(0 /* up */, 0 /* down */, t.cursorX /* left */, 0 /* right */)
	t.cursorX = 0
	t.clearLineToRight()

	for t.cursorY > 0 {
		t.move(1 /* up */, 0, 0, 0)
		t.cursorY--
		t.clearLineToRight()
	}

	if _, err = t.c.Write(t.outBuf); err != nil {
		return
	}
	t.outBuf = t.outBuf[:0]

	if n, err = writeWithCRLF(t.c, buf); err != nil {
		return
	}

	t.writeLine(t.prompt)
	if t.echo {
		t.writeLine(t.line)
	}

	t.moveCursorToPos(t.pos)

	if _, err = t.c.Write(t.outBuf); err != nil {
		return
	}
	t.outBuf = t.outBuf[:0]
	return
}