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    <h3>Editing: DebugFormatterHelper.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\Helper;

/**
 * Helps outputting debug information when running an external program from a command.
 *
 * An external program can be a Process, an HTTP request, or anything else.
 *
 * @author Fabien Potencier &lt;fabien@symfony.com&gt;
 */
class DebugFormatterHelper extends Helper
{
    private const COLORS = ['black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white', 'default'];
    private $started = [];
    private $count = -1;

    /**
     * Starts a debug formatting session.
     *
     * @return string
     */
    public function start(string $id, string $message, string $prefix = 'RUN')
    {
        $this-&gt;started[$id] = ['border' =&gt; ++$this-&gt;count % \count(self::COLORS)];

        return sprintf(&quot;%s&lt;bg=blue;fg=white&gt; %s &lt;/&gt; &lt;fg=blue&gt;%s&lt;/&gt;\n&quot;, $this-&gt;getBorder($id), $prefix, $message);
    }

    /**
     * Adds progress to a formatting session.
     *
     * @return string
     */
    public function progress(string $id, string $buffer, bool $error = false, string $prefix = 'OUT', string $errorPrefix = 'ERR')
    {
        $message = '';

        if ($error) {
            if (isset($this-&gt;started[$id]['out'])) {
                $message .= &quot;\n&quot;;
                unset($this-&gt;started[$id]['out']);
            }
            if (!isset($this-&gt;started[$id]['err'])) {
                $message .= sprintf('%s&lt;bg=red;fg=white&gt; %s &lt;/&gt; ', $this-&gt;getBorder($id), $errorPrefix);
                $this-&gt;started[$id]['err'] = true;
            }

            $message .= str_replace(&quot;\n&quot;, sprintf(&quot;\n%s&lt;bg=red;fg=white&gt; %s &lt;/&gt; &quot;, $this-&gt;getBorder($id), $errorPrefix), $buffer);
        } else {
            if (isset($this-&gt;started[$id]['err'])) {
                $message .= &quot;\n&quot;;
                unset($this-&gt;started[$id]['err']);
            }
            if (!isset($this-&gt;started[$id]['out'])) {
                $message .= sprintf('%s&lt;bg=green;fg=white&gt; %s &lt;/&gt; ', $this-&gt;getBorder($id), $prefix);
                $this-&gt;started[$id]['out'] = true;
            }

            $message .= str_replace(&quot;\n&quot;, sprintf(&quot;\n%s&lt;bg=green;fg=white&gt; %s &lt;/&gt; &quot;, $this-&gt;getBorder($id), $prefix), $buffer);
        }

        return $message;
    }

    /**
     * Stops a formatting session.
     *
     * @return string
     */
    public function stop(string $id, string $message, bool $successful, string $prefix = 'RES')
    {
        $trailingEOL = isset($this-&gt;started[$id]['out']) || isset($this-&gt;started[$id]['err']) ? &quot;\n&quot; : '';

        if ($successful) {
            return sprintf(&quot;%s%s&lt;bg=green;fg=white&gt; %s &lt;/&gt; &lt;fg=green&gt;%s&lt;/&gt;\n&quot;, $trailingEOL, $this-&gt;getBorder($id), $prefix, $message);
        }

        $message = sprintf(&quot;%s%s&lt;bg=red;fg=white&gt; %s &lt;/&gt; &lt;fg=red&gt;%s&lt;/&gt;\n&quot;, $trailingEOL, $this-&gt;getBorder($id), $prefix, $message);

        unset($this-&gt;started[$id]['out'], $this-&gt;started[$id]['err']);

        return $message;
    }

    private function getBorder(string $id): string
    {
        return sprintf('&lt;bg=%s&gt; &lt;/&gt;', self::COLORS[$this-&gt;started[$id]['border']]);
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'debug_formatter';
    }
}
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