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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare

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Current File : //usr/local/src/php7/php-7.0.5/ext/spl/internal/recursivetreeiterator.inc

<?php

/** @file recursivetreeiterator.inc
 * @ingroup SPL
 * @brief   class RecursiveTreeIterator
 * @author  Marcus Boerger, Johannes Schlueter
 * @date    2005 - 2009
 *
 * SPL - Standard PHP Library
 */


/** @ingroup SPL
 * @brief   RecursiveIteratorIterator to generate ASCII graphic trees for the
 *          entries in a RecursiveIterator
 * @author  Marcus Boerger, Johannes Schlueter
 * @version 1.1
 * @since   PHP 5.3
 */
class RecursiveTreeIterator extends RecursiveIteratorIterator
{
	const BYPASS_CURRENT = 0x00000004;
	const BYPASS_KEY     = 0x00000008;

	private $rit_flags;

	/**
	 * @param it         iterator to use as inner iterator
	 * @param rit_flags  flags passed to RecursiveIteratoIterator (parent)
	 * @param cit_flags  flags passed to RecursiveCachingIterator (for hasNext)
	 * @param mode       mode  passed to RecursiveIteratoIterator (parent)
	 */
	function __construct(RecursiveIterator $it, $rit_flags = self::BYPASS_KEY, $cit_flags = CachingIterator::CATCH_GET_CHILD, $mode = self::SELF_FIRST)
	{
		parent::__construct(new RecursiveCachingIterator($it, $cit_flags), $mode, $rit_flags);
		$this->rit_flags = $rit_flags;
	}

	private $prefix = array(0=>'', 1=>'| ', 2=>'  ', 3=>'|-', 4=>'\-', 5=>'');

	/** Prefix used to start elements. */
	const PREFIX_LEFT         = 0;
	/** Prefix used if $level < depth and hasNext($level) == true. */
	const PREFIX_MID_HAS_NEXT = 1;
	/** Prefix used if $level < depth and hasNext($level) == false. */
	const PREFIX_MID_LAST     = 2;
	/** Prefix used if $level == depth and hasNext($level) == true. */
	const PREFIX_END_HAS_NEXT = 3;
	/** Prefix used if $level == depth and hasNext($level) == false. */
	const PREFIX_END_LAST     = 4;
	/** Prefix used right in front of the current element. */
	const PREFIX_RIGHT        = 5;

	/**
	 * Set prefix part as used in getPrefix() and stored in $prefix.
	 * @param $part   any PREFIX_* const.
	 * @param $value  new prefix string for specified part.
	 * @throws OutOfRangeException if 0 > $part or $part > 5.
	 */
	function setPrefixPart($part, $value)
	{
		if (0 > $part || $part > 5) {
			throw new OutOfRangeException();
		}
		$this->prefix[$part] = (string)$value;
	}

	/** @return string to place in front of current element
	 */
	function getPrefix()
	{
		$tree = '';
		for ($level = 0; $level < $this->getDepth(); $level++)
		{
			$tree .= $this->getSubIterator($level)->hasNext() ? $this->prefix[1] : $this->prefix[2];
		}
		$tree .= $this->getSubIterator($level)->hasNext() ? $this->prefix[3] : $this->prefix[4];

		return $this->prefix[0] . $tree . $this->prefix[5];
	}

	/** @return string presentation build for current element
	 */
	function getEntry()
	{
		return @(string)parent::current();
	}

	/** @return string to place after the current element
	 */
	function getPostfix()
	{
		return '';
	}

	/** @return the current element prefixed and postfixed
	 */
	function current()
	{
		if ($this->rit_flags & self::BYPASS_CURRENT)
		{
			return parent::current();
		}
		else
		{
			return $this->getPrefix() . $this->getEntry() .  $this->getPostfix();
		}
	}

	/** @return the current key prefixed and postfixed
	 */
	function key()
	{
		if ($this->rit_flags & self::BYPASS_KEY)
		{
			return parent::key();
		}
		else
		{
			return $this->getPrefix() . parent::key() .  $this->getPostfix();
		}
	}

	/** Aggregates the inner iterator
	 */
	function __call($func, $params)
	{
		return call_user_func_array(array($this->getSubIterator(), $func), $params);
	}
}

?>

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