Format HTML source in PHP

format_html.php

<?php

$path = isset($argv[1]) ? $argv[1] : __DIR__;
$realpath = realpath($path);
echo "Thit tool is using free online formatter at www.freeformatter.com\n\n";
return HtmlFormatter::processObject($realpath);


/**
 * Class HtmlFormatter
 */
class HtmlFormatter
{
    /**
     * Choose right strategy to process path at input
     * @param string $pathName
     * @return int return_val
     */
    public static function processObject($pathName)
    {
        if (is_null($pathName)) {
            echo "ERROR: Unrecognized file name: {$pathName}\n";
            return 1;
        }
        if (is_dir($pathName)) {
            echo "Formatting all .html files in {$pathName}\n";
            self::processDirectory($pathName);
        } else {
            echo "Formatting file {$pathName}\n";
            self::processFile($pathName);
        }
        return 0;
    }

    /**
     * Format all HTML files in directory
     * @param string $pathName
     */
    public static function processDirectory($pathName)
    {
        $iterator = new DirectoryIterator($pathName);
        foreach ($iterator as $fileinfo) {
            // Ignore dot files (system or hidden files)
            if (strpos($fileinfo->getFilename(), '.') === 0) {
                continue;
            }

            if ($fileinfo->isDir()) {
                self::processDirectory($fileinfo->getPathname());
            } else {
                self::processFile($fileinfo->getPathname());
            }
        }
    }

    /**
     * Format one file, but only if is HTML
     * @param string $fileName
     */
    public static function processFile($fileName)
    {
        echo $fileName . " ... ";
        if (!preg_match('/\.html$/', $fileName)) {
            echo "ignoring (not HTML)\n";
            return;
        }
        try {
            self::formatFile($fileName);
            echo "OK";
        } catch (cUrlException $e) {
            echo "ERROR (" . $e->getCode() . "): " . $e->getMessage();
        } finally {
            echo "\n";
        }
    }

    /**
     * Format one HTML file
     * @param string $fileName
     * @throws cUrlException
     */
    public static function formatFile($fileName)
    {
        $sourceHtml = file_get_contents($fileName);
        $formattedHtml = self::getFormattedHtml($sourceHtml);
        file_put_contents($fileName, $formattedHtml);
    }

    /**
     * Call online formatter and return formatted HTML
     * @param string $sourceHtml Source HTML
     * @return string Formatted HTML
     * @throws cUrlException Thrown when online formatter return error
     */
    public static function getFormattedHtml($sourceHtml)
    {
        $cUrl = curl_init();
        curl_setopt($cUrl, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($cUrl, CURLOPT_POST, TRUE);
        curl_setopt($cUrl, CURLOPT_FOLLOWLOCATION, 0);
        curl_setopt($cUrl, CURLOPT_HEADER, 0);
        curl_setopt($cUrl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.71 Safari/537.36');
        curl_setopt($cUrl, CURLOPT_ENCODING, 'gzip');

        curl_setopt($cUrl, CURLOPT_URL, 'http://www.freeformatter.com/html-formatter.html');
        curl_setopt($cUrl, CURLOPT_REFERER, 'http://www.freeformatter.com/html-formatter.html');
        curl_setopt($cUrl, CURLOPT_HTTPHEADER, [
            'Origin: http://www.freeformatter.com',
            'Accept-Language: cs,en-US;q=0.8,en;q=0.6',
            'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
        ]);
        curl_setopt($cUrl, CURLOPT_POSTFIELDS, array(
            'htmlString' => $sourceHtml,
            'indentation' => 'TWO_SPACES',
            'forceInNewWindow' => 'true',
            'encoding' => 'UTF-8',
        ));

        $returnValue = curl_exec($cUrl);
        $httpStatus = curl_getinfo($cUrl, CURLINFO_HTTP_CODE);
        curl_close($cUrl);

        if ($httpStatus != 200) {
            throw new cUrlException(strip_tags($returnValue), $httpStatus);
        }
        return $returnValue;
    }
}


/**
 * Class cUrlException
 */
class cUrlException extends Exception
{
}