| 1 |
|
<?php |
| 2 |
|
/** |
| 3 |
|
* Xyster Framework |
| 4 |
|
* |
| 5 |
|
* LICENSE |
| 6 |
|
* |
| 7 |
|
* This source file is subject to the new BSD license that is bundled |
| 8 |
|
* with this package in the file LICENSE.txt. |
| 9 |
|
* It is also available through the world-wide-web at this URL: |
| 10 |
|
* http://www.opensource.org/licenses/bsd-license.php |
| 11 |
|
* If you did not receive a copy of the license and are unable to |
| 12 |
|
* obtain it through the world-wide-web, please send an email |
| 13 |
|
* to xyster@devweblog.org so we can send you a copy immediately. |
| 14 |
|
* |
| 15 |
|
* @category Xyster |
| 16 |
|
* @package Xyster_Collection |
| 17 |
|
* @copyright Copyright (c) 2007 Irrational Logic (http://devweblog.org) |
| 18 |
|
* @license http://www.opensource.org/licenses/bsd-license.php New BSD License |
| 19 |
|
*/ |
| 20 |
|
/** |
| 21 |
|
* Xyster_Collection_Interface |
| 22 |
|
*/ |
| 23 |
1 |
require_once 'Xyster/Collection/Interface.php'; |
| 24 |
|
/** |
| 25 |
|
* Xyster_Collection_Iterator |
| 26 |
|
*/ |
| 27 |
1 |
require_once 'Xyster/Collection/Iterator.php'; |
| 28 |
|
/** |
| 29 |
|
* Abstract class for collections |
| 30 |
|
* |
| 31 |
|
* @category Xyster |
| 32 |
|
* @package Xyster_Collection |
| 33 |
|
* @copyright Copyright (c) 2007 Irrational Logic (http://devweblog.org) |
| 34 |
|
* @license http://www.opensource.org/licenses/bsd-license.php New BSD License |
| 35 |
|
*/ |
| 36 |
|
class Xyster_Collection_Abstract implements Xyster_Collection_Interface |
| 37 |
|
{ |
| 38 |
|
/** |
| 39 |
|
* The actual collection entries |
| 40 |
|
* |
| 41 |
|
* @var array |
| 42 |
|
*/ |
| 43 |
|
protected $_items = array(); |
| 44 |
|
|
| 45 |
|
/** |
| 46 |
|
* Adds an item to the collection |
| 47 |
|
* |
| 48 |
|
* @param mixed $item The item to add |
| 49 |
|
* @return boolean Whether the collection changed as a result of this method |
| 50 |
|
*/ |
| 51 |
|
public function add( $item ) |
| 52 |
|
{ |
| 53 |
237 |
$this->_items[] = $item; |
| 54 |
237 |
return true; |
| 55 |
|
} |
| 56 |
|
|
| 57 |
|
/** |
| 58 |
|
* Removes all items from the collection |
| 59 |
|
*/ |
| 60 |
|
public function clear() |
| 61 |
|
{ |
| 62 |
22 |
$this->_items = array(); |
| 63 |
|
} |
| 64 |
|
|
| 65 |
|
/** |
| 66 |
|
* Tests to see whether the collection contains the value supplied |
| 67 |
|
* |
| 68 |
|
* If the supplied value is an object, the comparison will be done for |
| 69 |
|
* identity (===) and not for value (==). |
| 70 |
|
* |
| 71 |
|
* @param mixed $item The item to test |
| 72 |
|
* @return boolean Whether the collection contains the supplied value |
| 73 |
|
*/ |
| 74 |
|
public function contains( $item ) |
| 75 |
|
{ |
| 76 |
197 |
return in_array($item, $this->_items, true); |
| 77 |
|
} |
| 78 |
|
|
| 79 |
|
/** |
| 80 |
|
* Tests to see whether the collection contains all of the supplied values |
| 81 |
|
* |
| 82 |
|
* @param Xyster_Collection_Interface $values The values to test |
| 83 |
|
* @return boolean Whether the collection contains all of the supplied values |
| 84 |
|
*/ |
| 85 |
|
public function containsAll( Xyster_Collection_Interface $values ) |
| 86 |
|
{ |
| 87 |
30 |
foreach( $values as $v ) { |
| 88 |
30 |
if ( !$this->contains($v) ) { |
| 89 |
7 |
return false; |
| 90 |
0 |
} |
| 91 |
30 |
} |
| 92 |
30 |
return true; |
| 93 |
|
} |
| 94 |
|
|
| 95 |
|
/** |
| 96 |
|
* Tests to see whether the collection contains any of the supplied values |
| 97 |
|
* |
| 98 |
|
* Basically, implementations can safely return true on the first item that |
| 99 |
|
* is found. |
| 100 |
|
* |
| 101 |
|
* @param Xyster_Collection_Interface $values The values to test |
| 102 |
|
* @return boolean Whether the collection contains any of the supplied values |
| 103 |
|
*/ |
| 104 |
|
public function containsAny( Xyster_Collection_Interface $values ) |
| 105 |
|
{ |
| 106 |
26 |
foreach( $values as $v ) { |
| 107 |
26 |
if ( $this->contains($v) ) { |
| 108 |
16 |
return true; |
| 109 |
0 |
} |
| 110 |
19 |
} |
| 111 |
17 |
return false; |
| 112 |
|
} |
| 113 |
|
|
| 114 |
|
/** |
| 115 |
|
* Gets the number of items in the collection |
| 116 |
|
* |
| 117 |
|
* @return int The number of items |
| 118 |
|
*/ |
| 119 |
|
public function count() |
| 120 |
|
{ |
| 121 |
245 |
return count($this->_items); |
| 122 |
|
} |
| 123 |
|
|
| 124 |
|
/** |
| 125 |
|
* Gets an iterator for the values in the collection |
| 126 |
|
* |
| 127 |
|
* @return SeekableIterator |
| 128 |
|
*/ |
| 129 |
|
public function getIterator() |
| 130 |
|
{ |
| 131 |
185 |
return count($this->_items) ? |
| 132 |
179 |
new Xyster_Collection_Iterator(array_values($this->_items)) : |
| 133 |
185 |
new EmptyIterator(); |
| 134 |
|
} |
| 135 |
|
|
| 136 |
|
/** |
| 137 |
|
* Tests to see if the collection contains no elements |
| 138 |
|
* |
| 139 |
|
* The return value from this method should be equivalent to |
| 140 |
|
* <code>( $collection->count() == 0 )</code>. |
| 141 |
|
* |
| 142 |
|
* @return boolean Whether this collection has no elements |
| 143 |
|
*/ |
| 144 |
|
public function isEmpty() |
| 145 |
|
{ |
| 146 |
17 |
return $this->count() == 0; |
| 147 |
|
} |
| 148 |
|
|
| 149 |
|
/** |
| 150 |
|
* Merges the values from the supplied collection into this one |
| 151 |
|
* |
| 152 |
|
* @param Xyster_Collection_Interface $values |
| 153 |
|
* @return boolean Whether the collection changed as a result of this method |
| 154 |
|
*/ |
| 155 |
|
public function merge( Xyster_Collection_Interface $values ) |
| 156 |
|
{ |
| 157 |
89 |
$before = count($this); |
| 158 |
89 |
foreach( $values as $v ) { |
| 159 |
82 |
$this->add($v); |
| 160 |
82 |
} |
| 161 |
89 |
return $this->count() != $before; |
| 162 |
|
} |
| 163 |
|
|
| 164 |
|
/** |
| 165 |
|
* Removes the specified value from the collection |
| 166 |
|
* |
| 167 |
|
* @param mixed $item The value to remove |
| 168 |
|
* @return boolean If the value was in the collection |
| 169 |
|
*/ |
| 170 |
|
public function remove( $item ) |
| 171 |
|
{ |
| 172 |
15 |
$before = $this->count(); |
| 173 |
15 |
foreach( $this->_items as $key=>$value ) { |
| 174 |
13 |
if ( $value === $item ) { |
| 175 |
12 |
unset($this->_items[$key]); |
| 176 |
12 |
} |
| 177 |
13 |
} |
| 178 |
15 |
return $this->count() != $before; |
| 179 |
|
} |
| 180 |
|
|
| 181 |
|
/** |
| 182 |
|
* Removes all of the specified values from the collection |
| 183 |
|
* |
| 184 |
|
* @param Xyster_Collection_Interface $values The values to remove |
| 185 |
|
* @return boolean Whether the collection changed as a result of this method |
| 186 |
|
*/ |
| 187 |
|
public function removeAll( Xyster_Collection_Interface $values ) |
| 188 |
|
{ |
| 189 |
8 |
$before = $this->count(); |
| 190 |
8 |
foreach( $this->_items as $key=>$value ) { |
| 191 |
8 |
if ( $values->contains($value) ) { |
| 192 |
8 |
unset($this->_items[$key]); |
| 193 |
8 |
} |
| 194 |
8 |
} |
| 195 |
8 |
return $this->count() != $before; |
| 196 |
|
} |
| 197 |
|
|
| 198 |
|
/** |
| 199 |
|
* Removes all values from the collection except for the ones specified |
| 200 |
|
* |
| 201 |
|
* If the collection doesn't contain any of the values supplied, it should |
| 202 |
|
* simply be emptied. |
| 203 |
|
* |
| 204 |
|
* @param Xyster_Collection_Interface $values The values to keep |
| 205 |
|
* @return boolean Whether the collection changed as a result of this method |
| 206 |
|
*/ |
| 207 |
|
public function retainAll( Xyster_Collection_Interface $values ) |
| 208 |
|
{ |
| 209 |
9 |
$before = $this->count(); |
| 210 |
9 |
if ( !$values->containsAny($this) ) { |
| 211 |
7 |
$this->clear(); |
| 212 |
7 |
return true; |
| 213 |
0 |
} |
| 214 |
9 |
foreach( $this->_items as $key=>$value ) { |
| 215 |
9 |
if ( !$values->contains($value) ) { |
| 216 |
9 |
unset($this->_items[$key]); |
| 217 |
9 |
} |
| 218 |
9 |
} |
| 219 |
9 |
return $this->count() != $before; |
| 220 |
|
} |
| 221 |
|
|
| 222 |
|
/** |
| 223 |
|
* Puts the items in this collection into an array |
| 224 |
|
* |
| 225 |
|
* @return array The items in this collection |
| 226 |
|
*/ |
| 227 |
|
public function toArray() |
| 228 |
|
{ |
| 229 |
17 |
return array_values($this->_items); |
| 230 |
|
} |
| 231 |
|
|
| 232 |
|
/** |
| 233 |
|
* Converts the collection into a string |
| 234 |
|
* |
| 235 |
|
* @magic |
| 236 |
|
* @return string |
| 237 |
|
*/ |
| 238 |
|
public function __toString() |
| 239 |
|
{ |
| 240 |
|
try { |
| 241 |
4 |
return '[' . implode(',', $this->_items) . ']'; |
| 242 |
0 |
} catch ( Exception $e ) { |
| 243 |
0 |
return '[???]'; |
| 244 |
|
} |
| 245 |
|
} |
| 246 |
|
} |