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<?php
/**
 * @package     FrameworkOnFramework
 * @subpackage  platformFilesystem
 * @copyright   Copyright (C) 2010-2016 Nicholas K. Dionysopoulos / Akeeba Ltd. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

// Protect from unauthorized access
defined('FOF_INCLUDED') or die;

interface FOFPlatformFilesystemInterface
{
    /**
     * Does the file exists?
     *
     * @param   $path  string   Path to the file to test
     *
     * @return  bool
     */
    public function fileExists($path);

/**
     * Delete a file or array of files
     *
     * @param   mixed  $file  The file name or an array of file names
     *
     * @return  boolean  True on success
     *
     */
    public function fileDelete($file);

/**
     * Copies a file
     *
     * @param   string   $src          The path to the source file
     * @param   string   $dest         The path to the destination file
     *
     * @return  boolean  True on success
     */
    public function fileCopy($src, $dest);

/**
     * Write contents to a file
     *
     * @param   string   $file         The full file path
     * @param   string   &$buffer      The buffer to write
     *
     * @return  boolean  True on success
     */
    public function fileWrite($file, &$buffer);

/**
     * Checks for snooping outside of the file system root.
     *
     * @param   string  $path  A file system path to check.
     *
     * @return  string  A cleaned version of the path or exit on error.
     *
     * @throws  Exception
     */
    public function pathCheck($path);

/**
     * Function to strip additional / or \ in a path name.
     *
     * @param   string  $path  The path to clean.
     * @param   string  $ds    Directory separator (optional).
     *
     * @return  string  The cleaned path.
     *
     * @throws  UnexpectedValueException
     */
    public function pathClean($path, $ds = DIRECTORY_SEPARATOR);

/**
     * Searches the directory paths for a given file.
     *
     * @param   mixed   $paths  An path string or array of path strings to search in
     * @param   string  $file   The file name to look for.
     *
     * @return  mixed   The full path and file name for the target file, or boolean false if the file is not found in any of the paths.
     */
    public function pathFind($paths, $file);

/**
     * Wrapper for the standard file_exists function
     *
     * @param   string  $path  Folder name relative to installation dir
     *
     * @return  boolean  True if path is a folder
     */
    public function folderExists($path);

/**
     * Utility function to read the files in a folder.
     *
     * @param   string   $path           The path of the folder to read.
     * @param   string   $filter         A filter for file names.
     * @param   mixed    $recurse        True to recursively search into sub-folders, or an integer to specify the maximum depth.
     * @param   boolean  $full           True to return the full path to the file.
     * @param   array    $exclude        Array with names of files which should not be shown in the result.
     * @param   array    $excludefilter  Array of filter to exclude
     *
     * @return  array  Files in the given folder.
     */
    public function folderFiles($path, $filter = '.', $recurse = false, $full = false, $exclude = array('.svn', 'CVS', '.DS_Store', '__MACOSX'),
                                $excludefilter = array('^\..*', '.*~'));

/**
     * Utility function to read the folders in a folder.
     *
     * @param   string   $path           The path of the folder to read.
     * @param   string   $filter         A filter for folder names.
     * @param   mixed    $recurse        True to recursively search into sub-folders, or an integer to specify the maximum depth.
     * @param   boolean  $full           True to return the full path to the folders.
     * @param   array    $exclude        Array with names of folders which should not be shown in the result.
     * @param   array    $excludefilter  Array with regular expressions matching folders which should not be shown in the result.
     *
     * @return  array  Folders in the given folder.
     */
    public function folderFolders($path, $filter = '.', $recurse = false, $full = false, $exclude = array('.svn', 'CVS', '.DS_Store', '__MACOSX'),
                                  $excludefilter = array('^\..*'));

/**
     * Create a folder -- and all necessary parent folders.
     *
     * @param   string   $path  A path to create from the base path.
     * @param   integer  $mode  Directory permissions to set for folders created. 0755 by default.
     *
     * @return  boolean  True if successful.
     */
    public function folderCreate($path = '', $mode = 0755);
}