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    <h3>Editing: OutputFormatter.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

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

namespace Symfony\Component\Console\Formatter;

use Symfony\Component\Console\Exception\InvalidArgumentException;

use function Symfony\Component\String\b;

/**
 * Formatter class for console output.
 *
 * @author Konstantin Kudryashov &lt;ever.zet@gmail.com&gt;
 * @author Roland Franssen &lt;franssen.roland@gmail.com&gt;
 */
class OutputFormatter implements WrappableOutputFormatterInterface
{
    private $decorated;
    private $styles = [];
    private $styleStack;

    public function __clone()
    {
        $this-&gt;styleStack = clone $this-&gt;styleStack;
        foreach ($this-&gt;styles as $key =&gt; $value) {
            $this-&gt;styles[$key] = clone $value;
        }
    }

    /**
     * Escapes &quot;&lt;&quot; and &quot;&gt;&quot; special chars in given text.
     *
     * @return string
     */
    public static function escape(string $text)
    {
        $text = preg_replace('/([^\\\\]|^)([&lt;&gt;])/', '$1\\\\$2', $text);

        return self::escapeTrailingBackslash($text);
    }

    /**
     * Escapes trailing &quot;\&quot; in given text.
     *
     * @internal
     */
    public static function escapeTrailingBackslash(string $text): string
    {
        if (str_ends_with($text, '\\')) {
            $len = \strlen($text);
            $text = rtrim($text, '\\');
            $text = str_replace(&quot;\0&quot;, '', $text);
            $text .= str_repeat(&quot;\0&quot;, $len - \strlen($text));
        }

        return $text;
    }

    /**
     * Initializes console output formatter.
     *
     * @param OutputFormatterStyleInterface[] $styles Array of &quot;name =&gt; FormatterStyle&quot; instances
     */
    public function __construct(bool $decorated = false, array $styles = [])
    {
        $this-&gt;decorated = $decorated;

        $this-&gt;setStyle('error', new OutputFormatterStyle('white', 'red'));
        $this-&gt;setStyle('info', new OutputFormatterStyle('green'));
        $this-&gt;setStyle('comment', new OutputFormatterStyle('yellow'));
        $this-&gt;setStyle('question', new OutputFormatterStyle('black', 'cyan'));

        foreach ($styles as $name =&gt; $style) {
            $this-&gt;setStyle($name, $style);
        }

        $this-&gt;styleStack = new OutputFormatterStyleStack();
    }

    /**
     * {@inheritdoc}
     */
    public function setDecorated(bool $decorated)
    {
        $this-&gt;decorated = $decorated;
    }

    /**
     * {@inheritdoc}
     */
    public function isDecorated()
    {
        return $this-&gt;decorated;
    }

    /**
     * {@inheritdoc}
     */
    public function setStyle(string $name, OutputFormatterStyleInterface $style)
    {
        $this-&gt;styles[strtolower($name)] = $style;
    }

    /**
     * {@inheritdoc}
     */
    public function hasStyle(string $name)
    {
        return isset($this-&gt;styles[strtolower($name)]);
    }

    /**
     * {@inheritdoc}
     */
    public function getStyle(string $name)
    {
        if (!$this-&gt;hasStyle($name)) {
            throw new InvalidArgumentException(sprintf('Undefined style: &quot;%s&quot;.', $name));
        }

        return $this-&gt;styles[strtolower($name)];
    }

    /**
     * {@inheritdoc}
     */
    public function format(?string $message)
    {
        return $this-&gt;formatAndWrap($message, 0);
    }

    /**
     * {@inheritdoc}
     */
    public function formatAndWrap(?string $message, int $width)
    {
        if (null === $message) {
            return '';
        }

        $offset = 0;
        $output = '';
        $openTagRegex = '[a-z](?:[^\\\\&lt;&gt;]*+ | \\\\.)*';
        $closeTagRegex = '[a-z][^&lt;&gt;]*+';
        $currentLineLength = 0;
        preg_match_all(&quot;#&lt;(($openTagRegex) | /($closeTagRegex)?)&gt;#ix&quot;, $message, $matches, \PREG_OFFSET_CAPTURE);
        foreach ($matches[0] as $i =&gt; $match) {
            $pos = $match[1];
            $text = $match[0];

            if (0 != $pos &amp;&amp; '\\' == $message[$pos - 1]) {
                continue;
            }

            // add the text up to the next tag
            $output .= $this-&gt;applyCurrentStyle(substr($message, $offset, $pos - $offset), $output, $width, $currentLineLength);
            $offset = $pos + \strlen($text);

            // opening tag?
            if ($open = '/' != $text[1]) {
                $tag = $matches[1][$i][0];
            } else {
                $tag = $matches[3][$i][0] ?? '';
            }

            if (!$open &amp;&amp; !$tag) {
                // &lt;/&gt;
                $this-&gt;styleStack-&gt;pop();
            } elseif (null === $style = $this-&gt;createStyleFromString($tag)) {
                $output .= $this-&gt;applyCurrentStyle($text, $output, $width, $currentLineLength);
            } elseif ($open) {
                $this-&gt;styleStack-&gt;push($style);
            } else {
                $this-&gt;styleStack-&gt;pop($style);
            }
        }

        $output .= $this-&gt;applyCurrentStyle(substr($message, $offset), $output, $width, $currentLineLength);

        return strtr($output, [&quot;\0&quot; =&gt; '\\', '\\&lt;' =&gt; '&lt;', '\\&gt;' =&gt; '&gt;']);
    }

    /**
     * @return OutputFormatterStyleStack
     */
    public function getStyleStack()
    {
        return $this-&gt;styleStack;
    }

    /**
     * Tries to create new style instance from string.
     */
    private function createStyleFromString(string $string): ?OutputFormatterStyleInterface
    {
        if (isset($this-&gt;styles[$string])) {
            return $this-&gt;styles[$string];
        }

        if (!preg_match_all('/([^=]+)=([^;]+)(;|$)/', $string, $matches, \PREG_SET_ORDER)) {
            return null;
        }

        $style = new OutputFormatterStyle();
        foreach ($matches as $match) {
            array_shift($match);
            $match[0] = strtolower($match[0]);

            if ('fg' == $match[0]) {
                $style-&gt;setForeground(strtolower($match[1]));
            } elseif ('bg' == $match[0]) {
                $style-&gt;setBackground(strtolower($match[1]));
            } elseif ('href' === $match[0]) {
                $url = preg_replace('{\\\\([&lt;&gt;])}', '$1', $match[1]);
                $style-&gt;setHref($url);
            } elseif ('options' === $match[0]) {
                preg_match_all('([^,;]+)', strtolower($match[1]), $options);
                $options = array_shift($options);
                foreach ($options as $option) {
                    $style-&gt;setOption($option);
                }
            } else {
                return null;
            }
        }

        return $style;
    }

    /**
     * Applies current style from stack to text, if must be applied.
     */
    private function applyCurrentStyle(string $text, string $current, int $width, int &amp;$currentLineLength): string
    {
        if ('' === $text) {
            return '';
        }

        if (!$width) {
            return $this-&gt;isDecorated() ? $this-&gt;styleStack-&gt;getCurrent()-&gt;apply($text) : $text;
        }

        if (!$currentLineLength &amp;&amp; '' !== $current) {
            $text = ltrim($text);
        }

        if ($currentLineLength) {
            $prefix = substr($text, 0, $i = $width - $currentLineLength).&quot;\n&quot;;
            $text = substr($text, $i);
        } else {
            $prefix = '';
        }

        preg_match('~(\\n)$~', $text, $matches);
        $text = $prefix.$this-&gt;addLineBreaks($text, $width);
        $text = rtrim($text, &quot;\n&quot;).($matches[1] ?? '');

        if (!$currentLineLength &amp;&amp; '' !== $current &amp;&amp; &quot;\n&quot; !== substr($current, -1)) {
            $text = &quot;\n&quot;.$text;
        }

        $lines = explode(&quot;\n&quot;, $text);

        foreach ($lines as $line) {
            $currentLineLength += \strlen($line);
            if ($width &lt;= $currentLineLength) {
                $currentLineLength = 0;
            }
        }

        if ($this-&gt;isDecorated()) {
            foreach ($lines as $i =&gt; $line) {
                $lines[$i] = $this-&gt;styleStack-&gt;getCurrent()-&gt;apply($line);
            }
        }

        return implode(&quot;\n&quot;, $lines);
    }

    private function addLineBreaks(string $text, int $width): string
    {
        $encoding = mb_detect_encoding($text, null, true) ?: 'UTF-8';

        return b($text)-&gt;toCodePointString($encoding)-&gt;wordwrap($width, &quot;\n&quot;, true)-&gt;toByteString($encoding);
    }
}
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