<?php

/**

 * SimplePie

 *

 * A PHP-Based RSS and Atom Feed Framework.

 * Takes the hard work out of managing a complete RSS/Atom solution.

 *

 * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without modification, are

 * permitted provided that the following conditions are met:

 *

 * 	* Redistributions of source code must retain the above copyright notice, this list of

 * 	  conditions and the following disclaimer.

 *

 * 	* Redistributions in binary form must reproduce the above copyright notice, this list

 * 	  of conditions and the following disclaimer in the documentation and/or other materials

 * 	  provided with the distribution.

 *

 * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used

 * 	  to endorse or promote products derived from this software without specific prior

 * 	  written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS

 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * @package SimplePie

 * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue

 * @author Ryan Parman

 * @author Sam Sneddon

 * @author Ryan McCue

 * @link http://simplepie.org/ SimplePie

 * @license http://www.opensource.org/licenses/bsd-license.php BSD License

 */

namespace SimplePie;

/**

 * Manages all category-related data

 *

 * Used by {@see \SimplePie\Item::get_category()} and {@see \SimplePie\Item::get_categories()}

 *

 * This class can be overloaded with {@see \SimplePie\SimplePie::set_category_class()}

 *

 * @package SimplePie

 * @subpackage API

 */

class Category

{

    /**

     * Category identifier

     *

     * @var string|null

     * @see get_term

     */

    public $term;

    /**

     * Categorization scheme identifier

     *

     * @var string|null

     * @see get_scheme()

     */

    public $scheme;

    /**

     * Human readable label

     *

     * @var string|null

     * @see get_label()

     */

    public $label;

    /**

     * Category type

     *

     * category for <category>

     * subject for <dc:subject>

     *

     * @var string|null

     * @see get_type()

     */

    public $type;

    /**

     * Constructor, used to input the data

     *

     * @param string|null $term

     * @param string|null $scheme

     * @param string|null $label

     * @param string|null $type

     */

    public function __construct($term = null, $scheme = null, $label = null, $type = null)

    {

        $this->term = $term;

        $this->scheme = $scheme;

        $this->label = $label;

        $this->type = $type;

    }

    /**

     * String-ified version

     *

     * @return string

     */

    public function __toString()

    {

        // There is no $this->data here

        return md5(serialize($this));

    }

    /**

     * Get the category identifier

     *

     * @return string|null

     */

    public function get_term()

    {

        return $this->term;

    }

    /**

     * Get the categorization scheme identifier

     *

     * @return string|null

     */

    public function get_scheme()

    {

        return $this->scheme;

    }

    /**

     * Get the human readable label

     *

     * @param bool $strict

     * @return string|null

     */

    public function get_label($strict = false)

    {

        if ($this->label === null && $strict !== true) {

            return $this->get_term();

        }

        return $this->label;

    }

    /**

     * Get the category type

     *

     * @return string|null

     */

    public function get_type()

    {

        return $this->type;

    }

}

class_alias('SimplePie\Category', 'SimplePie_Category');