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<?php
/**
* @brief Iterates through recursive iterators
* @author Marcus Boerger
* @version 1.0
*
*/
class RecursiveIteratorIterator implements Iterator
{
protected $ait = array();
protected $count = 0;
function __construct(RecursiveIterator $it) {
$this->count = 1;
$this->ait[0] = $it;
}
function rewind() {
while ($this->count > 1) {
unset($this->ait[--$this->count]);
}
$this->ait[0]->rewind();
$this->ait[0]->recursed = false;
}
function hasMore() {
$count = $this->count;
while ($count--) {
$it = $this->ait[$count];
if ($it->hasMore()) {// || (!$it->recursed && $it->isRecursive())) {
return true;
}
}
return false;
}
function key() {
$it = $this->ait[$this->count-1];
return $it->key();
}
function current() {
$it = $this->ait[$this->count-1];
return $it->current();
}
function next() {
while ($this->count) {
$it = $this->ait[$this->count-1];
if ($it->hasMore()) {
if (!$it->recursed && $it->hasChildren()) {
$it->recursed = true;
$sub = $it->getChildren();
$sub->recursed = false;
$sub->rewind();
if ($sub->hasMore()) {
$this->ait[$this->count++] = $sub;
if (!is_a($sub, 'RecursiveIterator')) {
throw new Exception(get_class($sub).'::getChildren() must return an object that implements RecursiveIterator');
}
return;
}
unset($sub);
}
$it->next();
$it->recursed = false;
if ($it->hasMore()) {
return;
}
$it->recursed = false;
}
if ($this->count <= 1) {
return;
}
unset($this->ait[--$this->count]);
$it = $this->ait[$this->count-1];
}
}
function getCurrentIterator() {
return $this->ait[$this->count-1];
}
}
?>
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