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<?php
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/**
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 * SimplePie
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 *
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 * A PHP-Based RSS and Atom Feed Framework.
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 * Takes the hard work out of managing a complete RSS/Atom solution.
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 *
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 * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without modification, are
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 * permitted provided that the following conditions are met:
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 *
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 * 	* Redistributions of source code must retain the above copyright notice, this list of
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 * 	  conditions and the following disclaimer.
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 *
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 * 	* Redistributions in binary form must reproduce the above copyright notice, this list
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 * 	  of conditions and the following disclaimer in the documentation and/or other materials
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 * 	  provided with the distribution.
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 *
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 * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used
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 * 	  to endorse or promote products derived from this software without specific prior
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 * 	  written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 * POSSIBILITY OF SUCH DAMAGE.
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 *
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 * @package SimplePie
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 * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
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 * @author Ryan Parman
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 * @author Sam Sneddon
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 * @author Ryan McCue
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 * @link http://simplepie.org/ SimplePie
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 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
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 */
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namespace SimplePie;
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/**
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 * Manages all category-related data
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 *
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 * Used by {@see \SimplePie\Item::get_category()} and {@see \SimplePie\Item::get_categories()}
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 *
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 * This class can be overloaded with {@see \SimplePie\SimplePie::set_category_class()}
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 *
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 * @package SimplePie
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 * @subpackage API
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 */
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class Category
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{
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    /**
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     * Category identifier
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     *
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     * @var string|null
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     * @see get_term
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     */
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    public $term;
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    /**
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     * Categorization scheme identifier
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     *
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     * @var string|null
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     * @see get_scheme()
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     */
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    public $scheme;
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    /**
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     * Human readable label
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     *
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     * @var string|null
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     * @see get_label()
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     */
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    public $label;
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    /**
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     * Category type
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     *
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     * category for <category>
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     * subject for <dc:subject>
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     *
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     * @var string|null
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     * @see get_type()
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     */
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    public $type;
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    /**
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     * Constructor, used to input the data
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     *
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     * @param string|null $term
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     * @param string|null $scheme
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     * @param string|null $label
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     * @param string|null $type
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     */
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    public function __construct($term = null, $scheme = null, $label = null, $type = null)
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    {
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        $this->term = $term;
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        $this->scheme = $scheme;
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        $this->label = $label;
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        $this->type = $type;
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    }
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    /**
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     * String-ified version
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     *
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     * @return string
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     */
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    public function __toString()
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    {
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        // There is no $this->data here
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        return md5(serialize($this));
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    }
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    /**
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     * Get the category identifier
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     *
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     * @return string|null
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     */
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    public function get_term()
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    {
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        return $this->term;
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    }
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    /**
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     * Get the categorization scheme identifier
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     *
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     * @return string|null
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     */
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    public function get_scheme()
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    {
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        return $this->scheme;
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    }
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    /**
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     * Get the human readable label
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     *
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     * @param bool $strict
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     * @return string|null
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     */
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    public function get_label($strict = false)
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    {
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        if ($this->label === null && $strict !== true) {
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            return $this->get_term();
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        }
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        return $this->label;
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    }
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    /**
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     * Get the category type
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     *
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     * @return string|null
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     */
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    public function get_type()
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    {
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        return $this->type;
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    }
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}
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class_alias('SimplePie\Category', 'SimplePie_Category');