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<?php
/**
* @brief Subdirectory aware directory iterator.
* @author Marcus Boerger
* @version 1.0
*
* This directory iterator recursively returns all files and directories
* within a given path.
*/
class sub_dir implements spl_sequence
{
protected $adir = array();
protected $cnt = 0;
protected $path = "";
protected $curr = "";
protected $nodots = true;
/**
* Construct a directory from a path.
*
* @param path The path to iterate.
* @param nodots Whether or not to display the entries '.' and '..'.
*/
function __construct($path, $nodots = true) {
$this->cnt = 0;
$this->path = $path;
}
/**
* Rewind the directory.
*
* @return void
*/
function rewind() {
while($this->cnt) {
unset($this->adir[$this->cnt--]);
}
$dir = new spl_dir($this->path);
$dir->path = "";
$this->adir[1] = $dir;
$this->cnt = 1;
if ($this->nodots) {
while ($this->has_more()) {
$ent = $this->current();
if ($ent != '.' && $ent != '..') {
break;
}
$this->next();
}
}
}
/**
* Move to net dir or file entry.
*
* @return void
*/
function next() {
if ($this->cnt) {
$dir = $this->adir[$this->cnt];
$ent = $dir->current();
$path = $dir->get_path().'/'.$ent;
if ($ent != '.' && $ent != '..' && is_dir($path)) {
$new = new spl_dir($path);
$new->path = $dir->path.$ent.'/';
$new->cnt = $this->cnt++;
$this->adir[$this->cnt] = $new;
if ($this->nodots) {
while ($new->has_more()) {
$ent = $new->current();
if ($ent != '.' && $ent != '..') {
break;
}
$new->next();
}
}
}
$dir->next();
}
}
/**
* @return Whether more dirs or files entries are available.
*/
function has_more() {
while ($this->cnt) {
$dir = $this->adir[$this->cnt];
if ($dir->has_more()) {
return true;
}
unset($this->adir[$this->cnt--]);
}
return false;
}
/**
* @return The current dir or file entry.
*/
function current() {
if ($this->cnt) {
$dir = $this->adir[$this->cnt];
return $dir->path . $dir->current();
}
throw new exception("No more elements available");
}
/**
* Hidden __clone
*/
protected function __clone() {
// disallow clone
}
}
?>
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