2005-10-02 17:33:05 +00:00
|
|
|
<?php
|
|
|
|
|
|
|
|
/** @file recursivetreeiterator.inc
|
|
|
|
* @ingroup Examples
|
|
|
|
* @brief class RecursiveTreeIterator
|
|
|
|
* @author Marcus Boerger, Johannes Schlueter
|
|
|
|
* @date 2005
|
|
|
|
*
|
|
|
|
* SPL - Standard PHP Library
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
/** @ingroup Examples
|
|
|
|
* @brief RecursiveIteratorIterator to generate ASCII graphic trees for the
|
|
|
|
* entries in a RecursiveIterator
|
|
|
|
* @author Marcus Boerger, Johannes Schlueter
|
|
|
|
* @version 1.0
|
|
|
|
*/
|
|
|
|
class RecursiveTreeIterator extends RecursiveIteratorIterator
|
|
|
|
{
|
|
|
|
private $callToString;
|
|
|
|
|
|
|
|
function __construct(RecursiveIterator $it, $cit_flags = CachingIterator::CATCH_GET_CHILD)
|
|
|
|
{
|
|
|
|
parent::__construct(new RecursiveCachingIterator($it, $cit_flags), 1);
|
|
|
|
$this->callToString = (bool)($cit_flags & CachingIterator::CALL_TOSTRING);
|
|
|
|
}
|
|
|
|
|
2005-10-03 13:36:18 +00:00
|
|
|
/** @return prefix used if $level < depth and hasNext($level) == true
|
|
|
|
*/
|
|
|
|
function getPrefix1()
|
|
|
|
{
|
|
|
|
return '| ';
|
|
|
|
}
|
|
|
|
|
|
|
|
/** @return prefix used if $level < depth and hasNext($level) == false
|
|
|
|
*/
|
|
|
|
function getPrefix2()
|
|
|
|
{
|
|
|
|
return ' ';
|
|
|
|
}
|
|
|
|
|
|
|
|
/** @return prefix used if $level == depth and hasNext($level) == true
|
|
|
|
*/
|
|
|
|
function getPrefix3()
|
|
|
|
{
|
|
|
|
return '|-';
|
|
|
|
}
|
|
|
|
|
|
|
|
/** @return prefix used if $level == depth and hasNext($level) == false
|
|
|
|
*/
|
|
|
|
function getPrefix4()
|
|
|
|
{
|
|
|
|
return '\-';
|
|
|
|
}
|
|
|
|
|
|
|
|
function getPrefix($level)
|
|
|
|
{
|
|
|
|
if ($level < 0 || $level > $this->getDepth())
|
|
|
|
{
|
|
|
|
throw new OutOfBoundsException('Parameter $level must be >= 0 and <= depth');
|
|
|
|
}
|
|
|
|
if ($level < $this->getDepth())
|
|
|
|
{
|
|
|
|
return $this->getSubIterator($level)->hasNext() ? $this->getPrefix1() : $this->getPrefix2();
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
return $this->getSubIterator($level)->hasNext() ? $this->getPrefix3() : $this->getPrefix4();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-10-02 17:33:05 +00:00
|
|
|
/** @return the current element prefixed with ASCII graphics
|
|
|
|
*/
|
|
|
|
function current()
|
|
|
|
{
|
|
|
|
$tree = '';
|
2005-10-03 13:36:18 +00:00
|
|
|
for ($l=0; $l <= $this->getDepth(); $l++)
|
|
|
|
{
|
|
|
|
$tree .= $this->getPrefix($l);
|
2005-10-02 17:33:05 +00:00
|
|
|
}
|
|
|
|
|
2005-10-03 13:36:18 +00:00
|
|
|
return $tree . ($this->callToString ? $this->__toString() : parent::current());
|
2005-10-02 17:33:05 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/** Aggregates the inner iterator
|
|
|
|
*/
|
|
|
|
function __call($func, $params)
|
|
|
|
{
|
|
|
|
return call_user_func_array(array($this->getSubIterator(), $func), $params);
|
|
|
|
}
|
|
|
|
}
|