OutputFormatterStyleStack.php

Go to the documentation of this file.

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Formatter;

class OutputFormatterStyleStack
{
    private $styles;

    private $emptyStyle;

    public function __construct(OutputFormatterStyleInterface $emptyStyle = null)
    {
        $this->emptyStyle = $emptyStyle ?: new OutputFormatterStyle();
        $this->reset();
    }

    public function reset()
    {
        $this->styles = array();
    }

    public function push(OutputFormatterStyleInterface $style)
    {
        $this->styles[] = $style;
    }

    public function pop(OutputFormatterStyleInterface $style = null)
    {
        if (empty($this->styles)) {
            return $this->emptyStyle;
        }

        if (null === $style) {
            return array_pop($this->styles);
        }

        foreach (array_reverse($this->styles, true) as $index => $stackedStyle) {
            if ($style->apply('') === $stackedStyle->apply('')) {
                $this->styles = array_slice($this->styles, 0, $index);

                return $stackedStyle;
            }
        }

        throw new \InvalidArgumentException('Incorrectly nested style tag found.');
    }

    public function getCurrent()
    {
        if (empty($this->styles)) {
            return $this->emptyStyle;
        }

        return $this->styles[count($this->styles) - 1];
    }

    public function setEmptyStyle(OutputFormatterStyleInterface $emptyStyle)
    {
        $this->emptyStyle = $emptyStyle;

        return $this;
    }

    public function getEmptyStyle()
    {
        return $this->emptyStyle;
    }
}