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<?php |
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/* |
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* This file is part of the Ariadne Component Library. |
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* |
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* (c) Muze <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace arc\path; |
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/** |
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* This class is a value object for a collapsed path. It behaves as close as possible like a string. |
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* But you can't change it. Serializing it to json or php will return a string. You can access characters |
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* by position, like a string. You can count() it. |
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* \arc\path::collapse() will return an instance of this class. If the collapsed path is identical to |
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* another path Value, \arc\path::collapse will return that value. This means that you can use a === |
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* to compare path Value objects, as long as you only use \arc\path::collapse() to create them. |
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*/ |
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final class Value implements \JsonSerializable, \Serializable, \ArrayAccess, \Countable { |
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private $path = ''; |
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public function __construct($path) |
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{ |
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$path = str_replace('\\', '/', (string) $path); |
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$this->path = \arc\path::reduce( |
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$path, |
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function ($result, $entry) { |
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if ($entry == '..' ) { |
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$result = dirname( $result ); |
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if (isset($result[1])) { // fast check to see if there is a dirname |
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$result .= '/'; |
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} else { |
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$result = '/'; |
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} |
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} else if ($entry !== '.') { |
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$result .= $entry .'/'; |
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} |
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return $result; |
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}, |
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'/' // initial value, always start paths with a '/' |
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); |
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} |
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public function __toString() |
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{ |
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return $this->path; |
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} |
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public function jsonSerialize() |
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{ |
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return $this->path; |
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} |
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public function serialize() |
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{ |
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return serialize($this->path); |
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} |
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public function unserialize($data) |
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{ |
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$this->path = unserialize($data); |
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} |
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public function count() |
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{ |
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return count($this->path); |
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} |
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public function offsetGet($offset) |
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{ |
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return $this->path[$offset]; |
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} |
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public function offsetSet($offset, $char) |
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{ |
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throw new \LogicException('\arc\path\Value is immutable, cast it to a string to change it'); |
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} |
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public function offsetUnset($offset) |
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{ |
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throw new \LogicException('\arc\path\Value is immutable, cast it to a string to change it'); |
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} |
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public function offsetExists($offset) |
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{ |
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return isset($this->path[$offset]); |
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} |
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} |
Ariadne-CMS /
arc-base
