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- MFH Update examples

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This commit is contained in:
Marcus Boerger 2005-10-05 19:11:51 +00:00
parent 3282497f82
commit 3ced246dfc
1 changed files with 47 additions and 51 deletions
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98
ext/spl/examples/recursivetreeiterator.inc
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@ -19,68 +19,62 @@
class RecursiveTreeIterator extends RecursiveIteratorIterator class RecursiveTreeIterator extends RecursiveIteratorIterator
{ {
private $callToString; private $callToString;
function __construct(RecursiveIterator $it, $cit_flags = CachingIterator::CATCH_GET_CHILD) /**
* @param it iterator to use as inner iterator
* @param flags flags passed to RecursiveIteratoIterator (parent)
* @param cit_flags flags passed to RecursiveCachingIterator (for hasNext)
*/
function __construct(RecursiveIterator $it, $flags = self::SELF_FIRST, $cit_flags = CachingIterator::CATCH_GET_CHILD)
{ {
parent::__construct(new RecursiveCachingIterator($it, $cit_flags), 1); parent::__construct(new RecursiveCachingIterator($it, $cit_flags), $flags);
$this->callToString = (bool)($cit_flags & CachingIterator::CALL_TOSTRING); $this->callToString = (bool)($cit_flags & CachingIterator::CALL_TOSTRING);
} }
/** @return prefix used if $level < depth and hasNext($level) == true /** Prefix strings used in getPrefix()
*
* 0: prefix used to start elements
* 1: prefix used if $level < depth and hasNext($level) == true
* 2: prefix used if $level < depth and hasNext($level) == false
* 3: prefix used if $level == depth and hasNext($level) == true
* 4: prefix used if $level == depth and hasNext($level) == false
* 5: prefix used right in front of the current element
*/ */
function getPrefix1() public $prefix = array(0=>'', 1=>'| ', 2=>' ', 3=>'|-', 4=>'\-', 5=>'');
{
return '| ';
}
/** @return prefix used if $level < depth and hasNext($level) == false /** @return string to place in front of current element
*/ */
function getPrefix2() function getPrefix()
{
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();
}
}
/** @return the current element prefixed with ASCII graphics
*/
function current()
{ {
$tree = ''; $tree = '';
for ($l=0; $l <= $this->getDepth(); $l++) for ($level = 0; $level < $this->getDepth(); $level++)
{ {
$tree .= $this->getPrefix($l); $tree .= $this->getSubIterator($level)->hasNext() ? $this->prefix[1] : $this->prefix[2];
} }
$tree .= $this->getSubIterator($level)->hasNext() ? $this->prefix[3] : $this->prefix[4];
return $tree . ($this->callToString ? $this->__toString() : parent::current());
return $this->prefix[0] . $tree . $this->prefix[5];
}
/** @return string presentation build for current element
*/
function getEntry()
{
return $this->callToString ? $this->__toString() : parent::current();
}
/** @return string to place after the current element
*/
function getPostfix()
{
return '';
}
/** @return the current element prefixed and postfixed
*/
function current()
{
return $this->getPrefix() . $this->getEntry() . $this->getPostfix();
} }
/** Aggregates the inner iterator /** Aggregates the inner iterator
@ -90,3 +84,5 @@ class RecursiveTreeIterator extends RecursiveIteratorIterator
return call_user_func_array(array($this->getSubIterator(), $func), $params); return call_user_func_array(array($this->getSubIterator(), $func), $params);
} }
} }
?>