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<?php
/*
* Copyright 2010 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
/**
* File: CFArray
* Wrapper for ArrayObject.
*
* Version:
* 2010.10.03
*
* License and Copyright:
* See the included NOTICE.md file for more information.
*
* See Also:
* [PHP Developer Center](http://aws.amazon.com/php/)
* [ArrayObject](http://php.net/ArrayObject)
*/
/*%******************************************************************************************%*/
// CLASS
/**
* Class: CFArray
* Wrapper for ArrayObject.
*/
class CFArray extends ArrayObject
{
/**
* Method: __construct()
* The constructor.
*
* Access:
* public
*
* Parameters:
* $input - _mixed_ (Required) The input parameter accepts an array or an Object.
* $flags - _int_ (Optional) Flags to control the behavior of the ArrayObject object. Defaults to `ArrayObject::STD_PROP_LIST`.
* $iterator_class - _string_ (Optional) Specify the class that will be used for iteration of the `ArrayObject` object. `ArrayIterator` is the default class used.
*
* Returns:
* _mixed_ Either an array of matches, or a single <CFSimpleXML> element.
*/
public function __construct($input, $flags = self::STD_PROP_LIST, $iterator_class = 'ArrayIterator')
{
return parent::__construct($input, $flags, $iterator_class);
}
/**
* Method: __toString()
* Handles how the object is rendered when cast as a string.
*
* Access:
* public
*
* Returns:
* _string_ Array
*/
public function __toString()
{
return 'Array';
}
/**
* Method: map_integer()
* Maps each element in the CFArray object as an integer.
*
* Access:
* public
*
* Returns:
* _array_ The contents of the CFArray object mapped as integers.
*/
public function map_integer()
{
return array_map('intval', $this->getArrayCopy());
}
/**
* Method: map_string()
* Maps each element in the CFArray object as a string.
*
* Access:
* public
*
* Parameters:
* $pcre - _string_ (Optional) A Perl-Compatible Regular Expression (PCRE) to filter the names against.
*
* Returns:
* _array_ The contents of the CFArray object mapped as strings. If there are no results, the method will return an empty array.
*/
public function map_string($pcre = null)
{
$list = array_map('strval', $this->getArrayCopy());
if ($pcre)
{
foreach ($list as $item)
{
$dlist[] = preg_match($pcre, $item) ? $item : null;
}
$list = array_values(array_filter($dlist));
}
return $list;
}
/**
* Method: areOK()
* Verifies that _all_ responses were successful. A single failed request will cause <areOK()> to return false. Equivalent to <CFResponse::isOK()>, except it applies to all responses.
*
* Access:
* public
*
* Returns:
* _boolean_ Whether _all_ requests were successful or not.
*/
public function areOK()
{
$dlist = array();
$list = $this->getArrayCopy();
foreach ($list as $response)
{
if ($response instanceof CFResponse)
{
$dlist[] = $response->isOK();
}
}
return (array_search(false, $dlist, true) !== false) ? false : true;
}
/**
* Method: each()
* Iterates over a <CFArray> object, and executes a function for each matched element.
*
* Access:
* public
*
* Parameters:
* $callback - _string_ (Required) The callback function to execute. PHP 5.3 or newer can use an anonymous function.
* $bind - _mixed_ (Optional) A variable from the calling scope to pass-by-reference into the local scope of the callback function.
*
* Returns:
* _CFArray_ The original <CFArray> object.
*/
public function each($callback, &$bind = null)
{
$items = $this->getArrayCopy();
$max = count($items);
for ($i = 0; $i < $max; $i++)
{
$callback($items[$i], $i, $bind);
}
return $this;
}
/**
* Method: map()
* Passes each element in the current <CFArray> object through a function, and produces a new <CFArray> object containing the return values.
*
* Access:
* public
*
* Parameters:
* $callback - _string_ (Required) The callback function to execute. PHP 5.3 or newer can use an anonymous function.
* $bind - _mixed_ (Optional) A variable from the calling scope to pass-by-reference into the local scope of the callback function.
*
* Returns:
* _CFArray_ A new <CFArray> object containing the return values.
*/
public function map($callback, &$bind = null)
{
$items = $this->getArrayCopy();
$max = count($items);
$collect = array();
for ($i = 0; $i < $max; $i++)
{
$collect[] = $callback($items[$i], $i, $bind);
}
return new CFArray($collect);
}
/**
* Method: reduce()
* Reduces the list of nodes by passing each value in the current <CFArray> object through a function. The node will be removed if the function returns `false`.
*
* Access:
* public
*
* Parameters:
* $callback - _string_ (Required) The callback function to execute. PHP 5.3 or newer can use an anonymous function.
* $bind - _mixed_ (Optional) A variable from the calling scope to pass-by-reference into the local scope of the callback function.
*
* Returns:
* _CFArray_ A new <CFArray> object containing the return values.
*/
public function reduce($callback, &$bind = null)
{
$items = $this->getArrayCopy();
$max = count($items);
$collect = array();
for ($i = 0; $i < $max; $i++)
{
if ($callback($items[$i], $i, $bind) !== false)
{
$collect[] = $items[$i];
}
}
return new CFArray($collect);
}
/**
* Method: first()
* Gets the first result in the array.
*
* Access:
* public
*
* Returns:
* _mixed_ The first result in the <CFArray> object. Returns `false` if there are no items in the array.
*/
public function first()
{
$items = $this->getArrayCopy();
return count($items) ? $items[0] : false;
}
/**
* Method: last()
* Gets the last result in the array.
*
* Access:
* public
*
* Returns:
* _mixed_ The last result in the <CFArray> object. Returns `false` if there are no items in the array.
*/
public function last()
{
$items = $this->getArrayCopy();
$last = count($items) - 1;
return count($items) ? $items[$last] : false;
}
}