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wp-links-opml.php
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Edit: History.php
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\BrowserKit; /** * History. * * @author Fabien Potencier <fabien@symfony.com> */ class History { protected $stack = array(); protected $position = -1; /** * Clears the history. */ public function clear() { $this->stack = array(); $this->position = -1; } /** * Adds a Request to the history. * * @param Request $request A Request instance */ public function add(Request $request) { $this->stack = array_slice($this->stack, 0, $this->position + 1); $this->stack[] = clone $request; $this->position = count($this->stack) - 1; } /** * Returns true if the history is empty. * * @return Boolean true if the history is empty, false otherwise */ public function isEmpty() { return count($this->stack) == 0; } /** * Goes back in the history. * * @return Request A Request instance * * @throws \LogicException if the stack is already on the first page */ public function back() { if ($this->position < 1) { throw new \LogicException('You are already on the first page.'); } return clone $this->stack[--$this->position]; } /** * Goes forward in the history. * * @return Request A Request instance * * @throws \LogicException if the stack is already on the last page */ public function forward() { if ($this->position > count($this->stack) - 2) { throw new \LogicException('You are already on the last page.'); } return clone $this->stack[++$this->position]; } /** * Returns the current element in the history. * * @return Request A Request instance * * @throws \LogicException if the stack is empty */ public function current() { if (-1 == $this->position) { throw new \LogicException('The page history is empty.'); } return clone $this->stack[$this->position]; } }
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