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EDIT :: class-wp-filesystem-direct.php

<?php
/**
 * WordPress Direct Filesystem.
 *
 * @package WordPress
 * @subpackage Filesystem
 */

/**
 * WordPress Filesystem Class for direct PHP file and folder manipulation.
 *
 * @since 2.5.0
 * @package WordPress
 * @subpackage Filesystem
 * @uses WP_Filesystem_Base Extends class
 */
class WP_Filesystem_Direct extends WP_Filesystem_Base {

/**
	 * constructor
	 *
	 * @access public
	 *
	 * @param mixed $arg ignored argument
	 */
	public function __construct($arg) {
		$this->method = 'direct';
		$this->errors = new WP_Error();
	}

/**
	 * Reads entire file into a string
	 *
	 * @access public
	 *
	 * @param string $file Name of the file to read.
	 * @return string|bool The function returns the read data or false on failure.
	 */
	public function get_contents($file) {
		return @file_get_contents($file);
	}

/**
	 * Reads entire file into an array
	 *
	 * @access public
	 *
	 * @param string $file Path to the file.
	 * @return array|bool the file contents in an array or false on failure.
	 */
	public function get_contents_array($file) {
		return @file($file);
	}

/**
	 * Write a string to a file
	 *
	 * @access public
	 *
	 * @param string $file     Remote path to the file where to write the data.
	 * @param string $contents The data to write.
	 * @param int    $mode     Optional. The file permissions as octal number, usually 0644.
	 *                         Default false.
	 * @return bool False upon failure, true otherwise.
	 */
	public function put_contents( $file, $contents, $mode = false ) {
		$fp = @fopen( $file, 'wb' );
		if ( ! $fp )
			return false;

mbstring_binary_safe_encoding();

$data_length = strlen( $contents );

$bytes_written = fwrite( $fp, $contents );

reset_mbstring_encoding();

fclose( $fp );

if ( $data_length !== $bytes_written )
			return false;

$this->chmod( $file, $mode );

return true;
	}

/**
	 * Gets the current working directory
	 *
	 * @access public
	 *
	 * @return string|bool the current working directory on success, or false on failure.
	 */
	public function cwd() {
		return @getcwd();
	}

/**
	 * Change directory
	 *
	 * @access public
	 *
	 * @param string $dir The new current directory.
	 * @return bool Returns true on success or false on failure.
	 */
	public function chdir($dir) {
		return @chdir($dir);
	}

/**
	 * Changes file group
	 *
	 * @access public
	 *
	 * @param string $file      Path to the file.
	 * @param mixed  $group     A group name or number.
	 * @param bool   $recursive Optional. If set True changes file group recursively. Default false.
	 * @return bool Returns true on success or false on failure.
	 */
	public function chgrp($file, $group, $recursive = false) {
		if ( ! $this->exists($file) )
			return false;
		if ( ! $recursive )
			return @chgrp($file, $group);
		if ( ! $this->is_dir($file) )
			return @chgrp($file, $group);
		// Is a directory, and we want recursive
		$file = trailingslashit($file);
		$filelist = $this->dirlist($file);
		foreach ($filelist as $filename)
			$this->chgrp($file . $filename, $group, $recursive);

return true;
	}

/**
	 * Changes filesystem permissions
	 *
	 * @access public
	 *
	 * @param string $file      Path to the file.
	 * @param int    $mode      Optional. The permissions as octal number, usually 0644 for files,
	 *                          0755 for dirs. Default false.
	 * @param bool   $recursive Optional. If set True changes file group recursively. Default false.
	 * @return bool Returns true on success or false on failure.
	 */
	public function chmod($file, $mode = false, $recursive = false) {
		if ( ! $mode ) {
			if ( $this->is_file($file) )
				$mode = FS_CHMOD_FILE;
			elseif ( $this->is_dir($file) )
				$mode = FS_CHMOD_DIR;
			else
				return false;
		}

if ( ! $recursive || ! $this->is_dir($file) )
			return @chmod($file, $mode);
		// Is a directory, and we want recursive
		$file = trailingslashit($file);
		$filelist = $this->dirlist($file);
		foreach ( (array)$filelist as $filename => $filemeta)
			$this->chmod($file . $filename, $mode, $recursive);

return true;
	}

/**
	 * Changes file owner
	 *
	 * @access public
	 *
	 * @param string $file      Path to the file.
	 * @param mixed  $owner     A user name or number.
	 * @param bool   $recursive Optional. If set True changes file owner recursively.
	 *                          Default false.
	 * @return bool Returns true on success or false on failure.
	 */
	public function chown($file, $owner, $recursive = false) {
		if ( ! $this->exists($file) )
			return false;
		if ( ! $recursive )
			return @chown($file, $owner);
		if ( ! $this->is_dir($file) )
			return @chown($file, $owner);
		// Is a directory, and we want recursive
		$filelist = $this->dirlist($file);
		foreach ($filelist as $filename) {
			$this->chown($file . '/' . $filename, $owner, $recursive);
		}
		return true;
	}

/**
	 * Gets file owner
	 *
	 * @access public
	 *
	 * @param string $file Path to the file.
	 * @return string|bool Username of the user or false on error.
	 */
	public function owner($file) {
		$owneruid = @fileowner($file);
		if ( ! $owneruid )
			return false;
		if ( ! function_exists('posix_getpwuid') )
			return $owneruid;
		$ownerarray = posix_getpwuid($owneruid);
		return $ownerarray['name'];
	}

/**
	 * Gets file permissions
	 *
	 * FIXME does not handle errors in fileperms()
	 *
	 * @access public
	 *
	 * @param string $file Path to the file.
	 * @return string Mode of the file (last 3 digits).
	 */
	public function getchmod($file) {
		return substr( decoct( @fileperms( $file ) ), -3 );
	}

/**
	 * @access public
	 *
	 * @param string $file
	 * @return string|false
	 */
	public function group($file) {
		$gid = @filegroup($file);
		if ( ! $gid )
			return false;
		if ( ! function_exists('posix_getgrgid') )
			return $gid;
		$grouparray = posix_getgrgid($gid);
		return $grouparray['name'];
	}

/**
	 * @access public
	 *
	 * @param string $source
	 * @param string $destination
	 * @param bool   $overwrite
	 * @param int    $mode
	 * @return bool
	 */
	public function copy($source, $destination, $overwrite = false, $mode = false) {
		if ( ! $overwrite && $this->exists($destination) )
			return false;

$rtval = copy($source, $destination);
		if ( $mode )
			$this->chmod($destination, $mode);
		return $rtval;
	}

/**
	 * @access public
	 *
	 * @param string $source
	 * @param string $destination
	 * @param bool $overwrite
	 * @return bool
	 */
	public function move($source, $destination, $overwrite = false) {
		if ( ! $overwrite && $this->exists($destination) )
			return false;

// Try using rename first. if that fails (for example, source is read only) try copy.
		if ( @rename($source, $destination) )
			return true;

if ( $this->copy($source, $destination, $overwrite) && $this->exists($destination) ) {
			$this->delete($source);
			return true;
		} else {
			return false;
		}
	}

/**
	 * @access public
	 *
	 * @param string $file
	 * @param bool $recursive
	 * @param string $type
	 * @return bool
	 */
	public function delete($file, $recursive = false, $type = false) {
		if ( empty( $file ) ) // Some filesystems report this as /, which can cause non-expected recursive deletion of all files in the filesystem.
			return false;
		$file = str_replace( '\\', '/', $file ); // for win32, occasional problems deleting files otherwise

if ( 'f' == $type || $this->is_file($file) )
			return @unlink($file);
		if ( ! $recursive && $this->is_dir($file) )
			return @rmdir($file);

// At this point it's a folder, and we're in recursive mode
		$file = trailingslashit($file);
		$filelist = $this->dirlist($file, true);

$retval = true;
		if ( is_array( $filelist ) ) {
			foreach ( $filelist as $filename => $fileinfo ) {
				if ( ! $this->delete($file . $filename, $recursive, $fileinfo['type']) )
					$retval = false;
			}
		}

if ( file_exists($file) && ! @rmdir($file) )
			$retval = false;

return $retval;
	}
	/**
	 * @access public
	 *
	 * @param string $file
	 * @return bool
	 */
	public function exists($file) {
		return @file_exists($file);
	}
	/**
	 * @access public
	 *
	 * @param string $file
	 * @return bool
	 */
	public function is_file($file) {
		return @is_file($file);
	}
	/**
	 * @access public
	 *
	 * @param string $path
	 * @return bool
	 */
	public function is_dir($path) {
		return @is_dir($path);
	}

/**
	 * @access public
	 *
	 * @param string $file
	 * @return bool
	 */
	public function is_readable($file) {
		return @is_readable($file);
	}

/**
	 * @access public
	 *
	 * @param string $file
	 * @return bool
	 */
	public function is_writable($file) {
		return @is_writable($file);
	}

/**
	 * @access public
	 *
	 * @param string $file
	 * @return int
	 */
	public function atime($file) {
		return @fileatime($file);
	}

/**
	 * @access public
	 *
	 * @param string $file
	 * @return int
	 */
	public function mtime($file) {
		return @filemtime($file);
	}

/**
	 * @access public
	 *
	 * @param string $file
	 * @return int
	 */
	public function size($file) {
		return @filesize($file);
	}

/**
	 * @access public
	 *
	 * @param string $file
	 * @param int $time
	 * @param int $atime
	 * @return bool
	 */
	public function touch($file, $time = 0, $atime = 0) {
		if ($time == 0)
			$time = time();
		if ($atime == 0)
			$atime = time();
		return @touch($file, $time, $atime);
	}

/**
	 * @access public
	 *
	 * @param string $path
	 * @param mixed  $chmod
	 * @param mixed  $chown
	 * @param mixed  $chgrp
	 * @return bool
	 */
	public function mkdir($path, $chmod = false, $chown = false, $chgrp = false) {
		// Safe mode fails with a trailing slash under certain PHP versions.
		$path = untrailingslashit($path);
		if ( empty($path) )
			return false;

if ( ! $chmod )
			$chmod = FS_CHMOD_DIR;

if ( ! @mkdir($path) )
			return false;
		$this->chmod($path, $chmod);
		if ( $chown )
			$this->chown($path, $chown);
		if ( $chgrp )
			$this->chgrp($path, $chgrp);
		return true;
	}

/**
	 * @access public
	 *
	 * @param string $path
	 * @param bool $recursive
	 * @return bool
	 */
	public function rmdir($path, $recursive = false) {
		return $this->delete($path, $recursive);
	}

/**
	 * @access public
	 *
	 * @param string $path
	 * @param bool $include_hidden
	 * @param bool $recursive
	 * @return bool|array
	 */
	public function dirlist($path, $include_hidden = true, $recursive = false) {
		if ( $this->is_file($path) ) {
			$limit_file = basename($path);
			$path = dirname($path);
		} else {
			$limit_file = false;
		}

if ( ! $this->is_dir($path) )
			return false;

$dir = @dir($path);
		if ( ! $dir )
			return false;

$ret = array();

while (false !== ($entry = $dir->read()) ) {
			$struc = array();
			$struc['name'] = $entry;

if ( '.' == $struc['name'] || '..' == $struc['name'] )
				continue;

if ( ! $include_hidden && '.' == $struc['name'][0] )
				continue;

if ( $limit_file && $struc['name'] != $limit_file)
				continue;

$struc['perms'] 	= $this->gethchmod($path.'/'.$entry);
			$struc['permsn']	= $this->getnumchmodfromh($struc['perms']);
			$struc['number'] 	= false;
			$struc['owner']    	= $this->owner($path.'/'.$entry);
			$struc['group']    	= $this->group($path.'/'.$entry);
			$struc['size']    	= $this->size($path.'/'.$entry);
			$struc['lastmodunix']= $this->mtime($path.'/'.$entry);
			$struc['lastmod']   = date('M j',$struc['lastmodunix']);
			$struc['time']    	= date('h:i:s',$struc['lastmodunix']);
			$struc['type']		= $this->is_dir($path.'/'.$entry) ? 'd' : 'f';

if ( 'd' == $struc['type'] ) {
				if ( $recursive )
					$struc['files'] = $this->dirlist($path . '/' . $struc['name'], $include_hidden, $recursive);
				else
					$struc['files'] = array();
			}

$ret[ $struc['name'] ] = $struc;
		}
		$dir->close();
		unset($dir);
		return $ret;
	}
}

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EDIT :: class-wp-filesystem-direct.php