<?php

/**

 * SimplePie

 *

 * A PHP-Based RSS and Atom Feed Framework.

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

 *

 * Copyright (c) 2004-2016, 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

 */

/**

 * Decode HTML Entities

 *

 * This implements HTML5 as of revision 967 (2007-06-28)

 *

 * @deprecated Use DOMDocument instead!

 * @package SimplePie

 */

class SimplePie_Decode_HTML_Entities

{

	/**

	 * Data to be parsed

	 *

	 * @access private

	 * @var string

	 */

	var $data = '';

	/**

	 * Currently consumed bytes

	 *

	 * @access private

	 * @var string

	 */

	var $consumed = '';

	/**

	 * Position of the current byte being parsed

	 *

	 * @access private

	 * @var int

	 */

	var $position = 0;

	/**

	 * Create an instance of the class with the input data

	 *

	 * @access public

	 * @param string $data Input data

	 */

	public function __construct($data)

	{

		$this->data = $data;

	}

	/**

	 * Parse the input data

	 *

	 * @access public

	 * @return string Output data

	 */

	public function parse()

	{

		while (($this->position = strpos($this->data, '&', $this->position)) !== false)

		{

			$this->consume();

			$this->entity();

			$this->consumed = '';

		}

		return $this->data;

	}

	/**

	 * Consume the next byte

	 *

	 * @access private

	 * @return mixed The next byte, or false, if there is no more data

	 */

	public function consume()

	{

		if (isset($this->data[$this->position]))

		{

			$this->consumed .= $this->data[$this->position];

			return $this->data[$this->position++];

		}

		return false;

	}

	/**

	 * Consume a range of characters

	 *

	 * @access private

	 * @param string $chars Characters to consume

	 * @return mixed A series of characters that match the range, or false

	 */

	public function consume_range($chars)

	{

		if ($len = strspn($this->data, $chars, $this->position))

		{

			$data = substr($this->data, $this->position, $len);

			$this->consumed .= $data;

			$this->position += $len;

			return $data;

		}

		return false;

	}

	/**

	 * Unconsume one byte

	 *

	 * @access private

	 */

	public function unconsume()

	{

		$this->consumed = substr($this->consumed, 0, -1);

		$this->position--;

	}

	/**

	 * Decode an entity

	 *

	 * @access private

	 */

	public function entity()

	{

		switch ($this->consume())

		{

			case "\x09":

			case "\x0A":

			case "\x0B":

			case "\x0C":

			case "\x20":

			case "\x3C":

			case "\x26":

			case false:

				break;

			case "\x23":

				switch ($this->consume())

				{

					case "\x78":

					case "\x58":

						$range = '0123456789ABCDEFabcdef';

						$hex = true;

						break;

					default:

						$range = '0123456789';

						$hex = false;

						$this->unconsume();

						break;

				}

				if ($codepoint = $this->consume_range($range))

				{

					static $windows_1252_specials = array(0x0D => "\x0A", 0x80 => "\xE2\x82\xAC", 0x81 => "\xEF\xBF\xBD", 0x82 => "\xE2\x80\x9A", 0x83 => "\xC6\x92", 0x84 => "\xE2\x80\x9E", 0x85 => "\xE2\x80\xA6", 0x86 => "\xE2\x80\xA0", 0x87 => "\xE2\x80\xA1", 0x88 => "\xCB\x86", 0x89 => "\xE2\x80\xB0", 0x8A => "\xC5\xA0", 0x8B => "\xE2\x80\xB9", 0x8C => "\xC5\x92", 0x8D => "\xEF\xBF\xBD", 0x8E => "\xC5\xBD", 0x8F => "\xEF\xBF\xBD", 0x90 => "\xEF\xBF\xBD", 0x91 => "\xE2\x80\x98", 0x92 => "\xE2\x80\x99", 0x93 => "\xE2\x80\x9C", 0x94 => "\xE2\x80\x9D", 0x95 => "\xE2\x80\xA2", 0x96 => "\xE2\x80\x93", 0x97 => "\xE2\x80\x94", 0x98 => "\xCB\x9C", 0x99 => "\xE2\x84\xA2", 0x9A => "\xC5\xA1", 0x9B => "\xE2\x80\xBA", 0x9C => "\xC5\x93", 0x9D => "\xEF\xBF\xBD", 0x9E => "\xC5\xBE", 0x9F => "\xC5\xB8");

					if ($hex)

					{

						$codepoint = hexdec($codepoint);

					}

					else

					{

						$codepoint = intval($codepoint);

					}

					if (isset($windows_1252_specials[$codepoint]))

					{

						$replacement = $windows_1252_specials[$codepoint];

					}

					else

					{

						$replacement = SimplePie_Misc::codepoint_to_utf8($codepoint);

					}

					if (!in_array($this->consume(), array(';', false), true))

					{

						$this->unconsume();

					}

					$consumed_length = strlen($this->consumed);

					$this->data = substr_replace($this->data, $replacement, $this->position - $consumed_length, $consumed_length);

					$this->position += strlen($replacement) - $consumed_length;

				}

				break;

			default:

				static $entities = array(

					'Aacute' => "\xC3\x81",

					'aacute' => "\xC3\xA1",

					'Aacute;' => "\xC3\x81",

					'aacute;' => "\xC3\xA1",

					'Acirc' => "\xC3\x82",

					'acirc' => "\xC3\xA2",

					'Acirc;' => "\xC3\x82",

					'acirc;' => "\xC3\xA2",

					'acute' => "\xC2\xB4",

					'acute;' => "\xC2\xB4",

					'AElig' => "\xC3\x86",

					'aelig' => "\xC3\xA6",

					'AElig;' => "\xC3\x86",

					'aelig;' => "\xC3\xA6",

					'Agrave' => "\xC3\x80",

					'agrave' => "\xC3\xA0",

					'Agrave;' => "\xC3\x80",

					'agrave;' => "\xC3\xA0",

					'alefsym;' => "\xE2\x84\xB5",

					'Alpha;' => "\xCE\x91",

					'alpha;' => "\xCE\xB1",

					'AMP' => "\x26",

					'amp' => "\x26",

					'AMP;' => "\x26",

					'amp;' => "\x26",

					'and;' => "\xE2\x88\xA7",

					'ang;' => "\xE2\x88\xA0",

					'apos;' => "\x27",

					'Aring' => "\xC3\x85",

					'aring' => "\xC3\xA5",

					'Aring;' => "\xC3\x85",

					'aring;' => "\xC3\xA5",

					'asymp;' => "\xE2\x89\x88",

					'Atilde' => "\xC3\x83",

					'atilde' => "\xC3\xA3",

					'Atilde;' => "\xC3\x83",

					'atilde;' => "\xC3\xA3",

					'Auml' => "\xC3\x84",

					'auml' => "\xC3\xA4",

					'Auml;' => "\xC3\x84",

					'auml;' => "\xC3\xA4",

					'bdquo;' => "\xE2\x80\x9E",

					'Beta;' => "\xCE\x92",

					'beta;' => "\xCE\xB2",

					'brvbar' => "\xC2\xA6",

					'brvbar;' => "\xC2\xA6",

					'bull;' => "\xE2\x80\xA2",

					'cap;' => "\xE2\x88\xA9",

					'Ccedil' => "\xC3\x87",

					'ccedil' => "\xC3\xA7",

					'Ccedil;' => "\xC3\x87",

					'ccedil;' => "\xC3\xA7",

					'cedil' => "\xC2\xB8",

					'cedil;' => "\xC2\xB8",

					'cent' => "\xC2\xA2",

					'cent;' => "\xC2\xA2",

					'Chi;' => "\xCE\xA7",

					'chi;' => "\xCF\x87",

					'circ;' => "\xCB\x86",

					'clubs;' => "\xE2\x99\xA3",

					'cong;' => "\xE2\x89\x85",

					'COPY' => "\xC2\xA9",

					'copy' => "\xC2\xA9",

					'COPY;' => "\xC2\xA9",

					'copy;' => "\xC2\xA9",

					'crarr;' => "\xE2\x86\xB5",

					'cup;' => "\xE2\x88\xAA",

					'curren' => "\xC2\xA4",

					'curren;' => "\xC2\xA4",

					'Dagger;' => "\xE2\x80\xA1",

					'dagger;' => "\xE2\x80\xA0",

					'dArr;' => "\xE2\x87\x93",

					'darr;' => "\xE2\x86\x93",

					'deg' => "\xC2\xB0",

					'deg;' => "\xC2\xB0",

					'Delta;' => "\xCE\x94",

					'delta;' => "\xCE\xB4",

					'diams;' => "\xE2\x99\xA6",

					'divide' => "\xC3\xB7",

					'divide;' => "\xC3\xB7",

					'Eacute' => "\xC3\x89",

					'eacute' => "\xC3\xA9",

					'Eacute;' => "\xC3\x89",

					'eacute;' => "\xC3\xA9",

					'Ecirc' => "\xC3\x8A",

					'ecirc' => "\xC3\xAA",

					'Ecirc;' => "\xC3\x8A",

					'ecirc;' => "\xC3\xAA",

					'Egrave' => "\xC3\x88",

					'egrave' => "\xC3\xA8",

					'Egrave;' => "\xC3\x88",

					'egrave;' => "\xC3\xA8",

					'empty;' => "\xE2\x88\x85",

					'emsp;' => "\xE2\x80\x83",

					'ensp;' => "\xE2\x80\x82",

					'Epsilon;' => "\xCE\x95",

					'epsilon;' => "\xCE\xB5",

					'equiv;' => "\xE2\x89\xA1",

					'Eta;' => "\xCE\x97",

					'eta;' => "\xCE\xB7",

					'ETH' => "\xC3\x90",

					'eth' => "\xC3\xB0",

					'ETH;' => "\xC3\x90",

					'eth;' => "\xC3\xB0",

					'Euml' => "\xC3\x8B",

					'euml' => "\xC3\xAB",

					'Euml;' => "\xC3\x8B",

					'euml;' => "\xC3\xAB",

					'euro;' => "\xE2\x82\xAC",

					'exist;' => "\xE2\x88\x83",

					'fnof;' => "\xC6\x92",

					'forall;' => "\xE2\x88\x80",

					'frac12' => "\xC2\xBD",

					'frac12;' => "\xC2\xBD",

					'frac14' => "\xC2\xBC",

					'frac14;' => "\xC2\xBC",

					'frac34' => "\xC2\xBE",

					'frac34;' => "\xC2\xBE",

					'frasl;' => "\xE2\x81\x84",

					'Gamma;' => "\xCE\x93",

					'gamma;' => "\xCE\xB3",

					'ge;' => "\xE2\x89\xA5",

					'GT' => "\x3E",

					'gt' => "\x3E",

					'GT;' => "\x3E",

					'gt;' => "\x3E",

					'hArr;' => "\xE2\x87\x94",

					'harr;' => "\xE2\x86\x94",

					'hearts;' => "\xE2\x99\xA5",

					'hellip;' => "\xE2\x80\xA6",

					'Iacute' => "\xC3\x8D",

					'iacute' => "\xC3\xAD",

					'Iacute;' => "\xC3\x8D",

					'iacute;' => "\xC3\xAD",

					'Icirc' => "\xC3\x8E",

					'icirc' => "\xC3\xAE",

					'Icirc;' => "\xC3\x8E",

					'icirc;' => "\xC3\xAE",

					'iexcl' => "\xC2\xA1",

					'iexcl;' => "\xC2\xA1",

					'Igrave' => "\xC3\x8C",

					'igrave' => "\xC3\xAC",

					'Igrave;' => "\xC3\x8C",

					'igrave;' => "\xC3\xAC",

					'image;' => "\xE2\x84\x91",

					'infin;' => "\xE2\x88\x9E",

					'int;' => "\xE2\x88\xAB",

					'Iota;' => "\xCE\x99",

					'iota;' => "\xCE\xB9",

					'iquest' => "\xC2\xBF",

					'iquest;' => "\xC2\xBF",

					'isin;' => "\xE2\x88\x88",

					'Iuml' => "\xC3\x8F",

					'iuml' => "\xC3\xAF",

					'Iuml;' => "\xC3\x8F",

					'iuml;' => "\xC3\xAF",

					'Kappa;' => "\xCE\x9A",

					'kappa;' => "\xCE\xBA",

					'Lambda;' => "\xCE\x9B",

					'lambda;' => "\xCE\xBB",

					'lang;' => "\xE3\x80\x88",

					'laquo' => "\xC2\xAB",

					'laquo;' => "\xC2\xAB",

					'lArr;' => "\xE2\x87\x90",

					'larr;' => "\xE2\x86\x90",

					'lceil;' => "\xE2\x8C\x88",

					'ldquo;' => "\xE2\x80\x9C",

					'le;' => "\xE2\x89\xA4",

					'lfloor;' => "\xE2\x8C\x8A",

					'lowast;' => "\xE2\x88\x97",

					'loz;' => "\xE2\x97\x8A",

					'lrm;' => "\xE2\x80\x8E",

					'lsaquo;' => "\xE2\x80\xB9",

					'lsquo;' => "\xE2\x80\x98",

					'LT' => "\x3C",

					'lt' => "\x3C",

					'LT;' => "\x3C",

					'lt;' => "\x3C",

					'macr' => "\xC2\xAF",

					'macr;' => "\xC2\xAF",

					'mdash;' => "\xE2\x80\x94",