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File Content: `file.cls.php`

<?php
/**
 * LiteSpeed File Operator Library Class
 * Append/Replace content to a file
 *
 * @since 1.1.0
 */
namespace LiteSpeed;

defined('WPINC') || exit();

class File
{
	const MARKER = 'LiteSpeed Operator';

	/**
	 * Detect if an URL is 404
	 *
	 * @since  3.3
	 */
	public static function is_404($url)
	{
		$response = wp_remote_get($url);
		$code = wp_remote_retrieve_response_code($response);
		if ($code == 404) {
			return true;
		}

		return false;
	}

	/**
	 *	Delete folder
	 *
	 * @since 2.1
	 */
	public static function rrmdir($dir)
	{
		$files = array_diff(scandir($dir), array('.', '..'));

		foreach ($files as $file) {
			is_dir("$dir/$file") ? self::rrmdir("$dir/$file") : unlink("$dir/$file");
		}

		return rmdir($dir);
	}

	public static function count_lines($filename)
	{
		if (!file_exists($filename)) {
			return 0;
		}

		$file = new \SplFileObject($filename);
		$file->seek(PHP_INT_MAX);
		return $file->key() + 1;
	}

	/**
	 * Read data from file
	 *
	 * @since 1.1.0
	 * @param string $filename
	 * @param int $start_line
	 * @param int $lines
	 */
	public static function read($filename, $start_line = null, $lines = null)
	{
		if (!file_exists($filename)) {
			return '';
		}

		if (!is_readable($filename)) {
			return false;
		}

		if ($start_line !== null) {
			$res = array();
			$file = new \SplFileObject($filename);
			$file->seek($start_line);

			if ($lines === null) {
				while (!$file->eof()) {
					$res[] = rtrim($file->current(), "\n");
					$file->next();
				}
			} else {
				for ($i = 0; $i < $lines; $i++) {
					if ($file->eof()) {
						break;
					}
					$res[] = rtrim($file->current(), "\n");
					$file->next();
				}
			}

			unset($file);
			return $res;
		}

		$content = file_get_contents($filename);

		$content = self::remove_zero_space($content);

		return $content;
	}

	/**
	 * Append data to file
	 *
	 * @since 1.1.5
	 * @access public
	 * @param string $filename
	 * @param string $data
	 * @param boolean $mkdir
	 * @param boolean $silence Used to avoid WP's functions are used
	 */
	public static function append($filename, $data, $mkdir = false, $silence = true)
	{
		return self::save($filename, $data, $mkdir, true, $silence);
	}

	/**
	 * Save data to file
	 *
	 * @since 1.1.0
	 * @param string $filename
	 * @param string $data
	 * @param boolean $mkdir
	 * @param boolean $append If the content needs to be appended
	 * @param boolean $silence Used to avoid WP's functions are used
	 */
	public static function save($filename, $data, $mkdir = false, $append = false, $silence = true)
	{
		$error = false;
		$folder = dirname($filename);

		// mkdir if folder does not exist
		if (!file_exists($folder)) {
			if (!$mkdir) {
				return $silence ? false : sprintf(__('Folder does not exist: %s', 'litespeed-cache'), $folder);
			}

			set_error_handler('litespeed_exception_handler');

			try {
				mkdir($folder, 0755, true);
			} catch (\ErrorException $ex) {
				return $silence ? false : sprintf(__('Can not create folder: %1$s. Error: %2$s', 'litespeed-cache'), $folder, $ex->getMessage());
			}

			restore_error_handler();
		}

		if (!file_exists($filename)) {
			if (!is_writable($folder)) {
				return $silence ? false : sprintf(__('Folder is not writable: %s.', 'litespeed-cache'), $folder);
			}
			set_error_handler('litespeed_exception_handler');
			try {
				touch($filename);
			} catch (\ErrorException $ex) {
				return $silence ? false : sprintf(__('File %s is not writable.', 'litespeed-cache'), $filename);
			}
			restore_error_handler();
		} elseif (!is_writable($filename)) {
			return $silence ? false : sprintf(__('File %s is not writable.', 'litespeed-cache'), $filename);
		}

		$data = self::remove_zero_space($data);

		$ret = file_put_contents($filename, $data, $append ? FILE_APPEND : LOCK_EX);
		if ($ret === false) {
			return $silence ? false : sprintf(__('Failed to write to %s.', 'litespeed-cache'), $filename);
		}

		return true;
	}

	/**
	 * Remove Unicode zero-width space <200b><200c>
	 *
	 * @since 2.1.2
	 * @since 2.9 changed to public
	 */
	public static function remove_zero_space($content)
	{
		if (is_array($content)) {
			$content = array_map(__CLASS__ . '::remove_zero_space', $content);
			return $content;
		}

		// Remove UTF-8 BOM if present
		if (substr($content, 0, 3) === "\xEF\xBB\xBF") {
			$content = substr($content, 3);
		}

		$content = str_replace("\xe2\x80\x8b", '', $content);
		$content = str_replace("\xe2\x80\x8c", '', $content);
		$content = str_replace("\xe2\x80\x8d", '', $content);

		return $content;
	}

	/**
	 * Appends an array of strings into a file (.htaccess ), placing it between
	 * BEGIN and END markers.
	 *
	 * Replaces existing marked info. Retains surrounding
	 * data. Creates file if none exists.
	 *
	 * @param string       $filename  Filename to alter.
	 * @param string       $marker    The marker to alter.
	 * @param array|string $insertion The new content to insert.
	 * @param bool 	       $prepend Prepend insertion if not exist.
	 * @return bool True on write success, false on failure.
	 */
	public static function insert_with_markers($filename, $insertion = false, $marker = false, $prepend = false)
	{
		if (!$marker) {
			$marker = self::MARKER;
		}

		if (!$insertion) {
			$insertion = array();
		}

		return self::_insert_with_markers($filename, $marker, $insertion, $prepend); //todo: capture exceptions
	}

	/**
	 * Return wrapped block data with marker
	 *
	 * @param string $insertion
	 * @param string $marker
	 * @return string The block data
	 */
	public static function wrap_marker_data($insertion, $marker = false)
	{
		if (!$marker) {
			$marker = self::MARKER;
		}
		$start_marker = "# BEGIN {$marker}";
		$end_marker = "# END {$marker}";

		$new_data = implode("\n", array_merge(array($start_marker), $insertion, array($end_marker)));
		return $new_data;
	}

	/**
	 * Touch block data from file, return with marker
	 *
	 * @param string $filename
	 * @param string $marker
	 * @return string The current block data
	 */
	public static function touch_marker_data($filename, $marker = false)
	{
		if (!$marker) {
			$marker = self::MARKER;
		}

		$result = self::_extract_from_markers($filename, $marker);

		if (!$result) {
			return false;
		}

		$start_marker = "# BEGIN {$marker}";
		$end_marker = "# END {$marker}";
		$new_data = implode("\n", array_merge(array($start_marker), $result, array($end_marker)));
		return $new_data;
	}

	/**
	 * Extracts strings from between the BEGIN and END markers in the .htaccess file.
	 *
	 * @param string $filename
	 * @param string $marker
	 * @return array An array of strings from a file (.htaccess ) from between BEGIN and END markers.
	 */
	public static function extract_from_markers($filename, $marker = false)
	{
		if (!$marker) {
			$marker = self::MARKER;
		}
		return self::_extract_from_markers($filename, $marker);
	}

	/**
	 * Extracts strings from between the BEGIN and END markers in the .htaccess file.
	 *
	 * @param string $filename
	 * @param string $marker
	 * @return array An array of strings from a file (.htaccess ) from between BEGIN and END markers.
	 */
	private static function _extract_from_markers($filename, $marker)
	{
		$result = array();

		if (!file_exists($filename)) {
			return $result;
		}

		if ($markerdata = explode("\n", implode('', file($filename)))) {
			$state = false;
			foreach ($markerdata as $markerline) {
				if (strpos($markerline, '# END ' . $marker) !== false) {
					$state = false;
				}
				if ($state) {
					$result[] = $markerline;
				}
				if (strpos($markerline, '# BEGIN ' . $marker) !== false) {
					$state = true;
				}
			}
		}

		return array_map('trim', $result);
	}

	/**
	 * Inserts an array of strings into a file (.htaccess ), placing it between BEGIN and END markers.
	 *
	 * Replaces existing marked info. Retains surrounding data. Creates file if none exists.
	 *
	 * NOTE: will throw error if failed
	 *
	 * @since 3.0-
	 * @since  3.0 Throw errors if failed
	 * @access private
	 */
	private static function _insert_with_markers($filename, $marker, $insertion, $prepend = false)
	{
		if (!file_exists($filename)) {
			if (!is_writable(dirname($filename))) {
				Error::t('W', dirname($filename));
			}

			set_error_handler('litespeed_exception_handler');
			try {
				touch($filename);
			} catch (\ErrorException $ex) {
				Error::t('W', $filename);
			}
			restore_error_handler();
		} elseif (!is_writable($filename)) {
			Error::t('W', $filename);
		}

		if (!is_array($insertion)) {
			$insertion = explode("\n", $insertion);
		}

		$start_marker = "# BEGIN {$marker}";
		$end_marker = "# END {$marker}";

		$fp = fopen($filename, 'r+');
		if (!$fp) {
			Error::t('W', $filename);
		}

		// Attempt to get a lock. If the filesystem supports locking, this will block until the lock is acquired.
		flock($fp, LOCK_EX);

		$lines = array();
		while (!feof($fp)) {
			$lines[] = rtrim(fgets($fp), "\r\n");
		}

		// Split out the existing file into the preceding lines, and those that appear after the marker
		$pre_lines = $post_lines = $existing_lines = array();
		$found_marker = $found_end_marker = false;
		foreach ($lines as $line) {
			if (!$found_marker && false !== strpos($line, $start_marker)) {
				$found_marker = true;
				continue;
			} elseif (!$found_end_marker && false !== strpos($line, $end_marker)) {
				$found_end_marker = true;
				continue;
			}

			if (!$found_marker) {
				$pre_lines[] = $line;
			} elseif ($found_marker && $found_end_marker) {
				$post_lines[] = $line;
			} else {
				$existing_lines[] = $line;
			}
		}

		// Check to see if there was a change
		if ($existing_lines === $insertion) {
			flock($fp, LOCK_UN);
			fclose($fp);

			return true;
		}

		// Check if need to prepend data if not exist
		if ($prepend && !$post_lines) {
			// Generate the new file data
			$new_file_data = implode("\n", array_merge(array($start_marker), $insertion, array($end_marker), $pre_lines));
		} else {
			// Generate the new file data
			$new_file_data = implode("\n", array_merge($pre_lines, array($start_marker), $insertion, array($end_marker), $post_lines));
		}

		// Write to the start of the file, and truncate it to that length
		fseek($fp, 0);
		$bytes = fwrite($fp, $new_file_data);
		if ($bytes) {
			ftruncate($fp, ftell($fp));
		}
		fflush($fp);
		flock($fp, LOCK_UN);
		fclose($fp);

		return (bool) $bytes;
	}
}

Name	Size	Permission
cdn	---	0755
data_structure	---	0755
activation.cls.php	15351 bytes	0644
admin-display.cls.php	33999 bytes	0644
admin-settings.cls.php	9750 bytes	0644
admin.cls.php	4548 bytes	0644
api.cls.php	11342 bytes	0644
avatar.cls.php	6208 bytes	0644
base.cls.php	30959 bytes	0644
cdn-setup.cls.php	10702 bytes	0644
cdn.cls.php	13447 bytes	0644
cloud.cls.php	43495 bytes	0644
conf.cls.php	19025 bytes	0644
control.cls.php	22268 bytes	0644
core.cls.php	20531 bytes	0644
crawler-map.cls.php	14335 bytes	0644
crawler.cls.php	35522 bytes	0644
css.cls.php	13418 bytes	0644
data.cls.php	17824 bytes	0644
data.upgrade.func.php	21885 bytes	0644
db-optm.cls.php	9815 bytes	0644
debug2.cls.php	13412 bytes	0644
doc.cls.php	4851 bytes	0644
error.cls.php	7071 bytes	0644
esi.cls.php	27553 bytes	0644
file.cls.php	10378 bytes	0644
gui.cls.php	28108 bytes	0644
health.cls.php	2962 bytes	0644
htaccess.cls.php	24527 bytes	0644
img-optm.cls.php	61689 bytes	0644
import.cls.php	4250 bytes	0644
instance.cls.php	154 bytes	0644
lang.cls.php	15844 bytes	0644
localization.cls.php	3464 bytes	0644
media.cls.php	31770 bytes	0644
metabox.cls.php	4306 bytes	0644
object-cache.cls.php	16299 bytes	0644
object.lib.php	34784 bytes	0644
optimize.cls.php	37402 bytes	0644
optimizer.cls.php	9232 bytes	0644
placeholder.cls.php	14454 bytes	0644
preset.cls.php	5560 bytes	0644
purge.cls.php	30500 bytes	0644
report.cls.php	5456 bytes	0644
rest.cls.php	8060 bytes	0644
root.cls.php	12898 bytes	0644
router.cls.php	19536 bytes	0644
str.cls.php	1203 bytes	0644
tag.cls.php	8826 bytes	0644
task.cls.php	5965 bytes	0644
tool.cls.php	3370 bytes	0644
ucss.cls.php	14735 bytes	0644
utility.cls.php	21129 bytes	0644
vary.cls.php	19631 bytes	0644
vpi.cls.php	7586 bytes	0644

File Content: file.cls.php

File Content: `file.cls.php`