<?php

> 
/**
> declare(strict_types=1);


 * 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, Geoffrey Sneddon, Ryan McCue, and contributors



>  * 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, Geoffrey Sneddon, Ryan McCue



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


 * @author Ryan Parman

<  * @author Geoffrey Sneddon



>  * @author Sam Sneddon


 * @author Ryan McCue
 * @link http://simplepie.org/ SimplePie
 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
 */


> use SimplePie\XML\Declaration\Parser;




< /**
<  * Parses the XML Declaration
<  *
<  * @package SimplePie
<  * @subpackage Parsing
<  */
< class SimplePie_XML_Declaration_Parser
< {
< 	/**
< 	 * XML Version
< 	 *
< 	 * @access public
< 	 * @var string
< 	 */
< 	var $version = '1.0';
< 
< 	/**
< 	 * Encoding
< 	 *
< 	 * @access public
< 	 * @var string
< 	 */
< 	var $encoding = 'UTF-8';
< 
< 	/**
< 	 * Standalone
< 	 *
< 	 * @access public
< 	 * @var bool
< 	 */
< 	var $standalone = false;
< 
< 	/**
< 	 * Current state of the state machine
< 	 *
< 	 * @access private
< 	 * @var string
< 	 */
< 	var $state = 'before_version_name';
< 
< 	/**
< 	 * Input data
< 	 *
< 	 * @access private
< 	 * @var string
< 	 */
< 	var $data = '';
< 
< 	/**
< 	 * Input data length (to avoid calling strlen() everytime this is needed)
< 	 *
< 	 * @access private
< 	 * @var int
< 	 */
< 	var $data_length = 0;
< 
< 	/**
< 	 * Current position of the pointer
< 	 *
< 	 * @var int
< 	 * @access private
< 	 */
< 	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;
< 		$this->data_length = strlen($this->data);
< 	}
< 
< 	/**
< 	 * Parse the input data
< 	 *
< 	 * @access public
< 	 * @return bool true on success, false on failure
< 	 */
< 	public function parse()
< 	{
< 		while ($this->state && $this->state !== 'emit' && $this->has_data())
< 		{
< 			$state = $this->state;
< 			$this->$state();
< 		}
< 		$this->data = '';
< 		if ($this->state === 'emit')
< 		{
< 			return true;
< 		}
< 
< 		$this->version = '';
< 		$this->encoding = '';
< 		$this->standalone = '';
< 		return false;
< 	}
< 
< 	/**
< 	 * Check whether there is data beyond the pointer
< 	 *
< 	 * @access private
< 	 * @return bool true if there is further data, false if not
< 	 */
< 	public function has_data()
< 	{
< 		return (bool) ($this->position < $this->data_length);
< 	}
< 
< 	/**
< 	 * Advance past any whitespace
< 	 *
< 	 * @return int Number of whitespace characters passed
< 	 */
< 	public function skip_whitespace()
< 	{
< 		$whitespace = strspn($this->data, "\x09\x0A\x0D\x20", $this->position);
< 		$this->position += $whitespace;
< 		return $whitespace;
< 	}
< 
< 	/**
< 	 * Read value
< 	 */
< 	public function get_value()
< 	{
< 		$quote = substr($this->data, $this->position, 1);
< 		if ($quote === '"' || $quote === "'")
< 		{
< 			$this->position++;
< 			$len = strcspn($this->data, $quote, $this->position);
< 			if ($this->has_data())
< 			{
< 				$value = substr($this->data, $this->position, $len);
< 				$this->position += $len + 1;
< 				return $value;
< 			}
< 		}
< 		return false;
< 	}
< 
< 	public function before_version_name()
< 	{
< 		if ($this->skip_whitespace())
< 		{
< 			$this->state = 'version_name';
< 		}
< 		else
< 		{
< 			$this->state = false;
< 		}
< 	}
< 
< 	public function version_name()
< 	{
< 		if (substr($this->data, $this->position, 7) === 'version')
< 		{
< 			$this->position += 7;
< 			$this->skip_whitespace();
< 			$this->state = 'version_equals';
< 		}
< 		else
< 		{
< 			$this->state = false;
< 		}
< 	}
< 
< 	public function version_equals()
< 	{
< 		if (substr($this->data, $this->position, 1) === '=')
< 		{
< 			$this->position++;
< 			$this->skip_whitespace();
< 			$this->state = 'version_value';
< 		}
< 		else
< 		{
< 			$this->state = false;
< 		}
< 	}



> class_exists('SimplePie\XML\Declaration\Parser');




< 	public function version_value()
< 	{
< 		if ($this->version = $this->get_value())
< 		{
< 			$this->skip_whitespace();
< 			if ($this->has_data())
< 			{
< 				$this->state = 'encoding_name';
< 			}
< 			else
< 			{
< 				$this->state = 'emit';
< 			}
< 		}
< 		else
< 		{
< 			$this->state = false;
< 		}
< 	}
< 
< 	public function encoding_name()
< 	{
< 		if (substr($this->data, $this->position, 8) === 'encoding')
< 		{
< 			$this->position += 8;
< 			$this->skip_whitespace();
< 			$this->state = 'encoding_equals';
< 		}
< 		else
< 		{
< 			$this->state = 'standalone_name';
< 		}
< 	}
< 
< 	public function encoding_equals()
< 	{
< 		if (substr($this->data, $this->position, 1) === '=')
< 		{
< 			$this->position++;
< 			$this->skip_whitespace();
< 			$this->state = 'encoding_value';
< 		}
< 		else
< 		{
< 			$this->state = false;
< 		}
< 	}



> // @trigger_error(sprintf('Using the "SimplePie_XML_Declaration_Parser" class is deprecated since SimplePie 1.7.0, use "SimplePie\XML\Declaration\Parser" instead.'), \E_USER_DEPRECATED);




< 	public function encoding_value()



> if (\false) {
>     /** @deprecated since SimplePie 1.7.0, use "SimplePie\XML\Declaration\Parser" instead */
>     class SimplePie_XML_Declaration_Parser extends Parser


	{

< 		if ($this->encoding = $this->get_value())
< 		{
< 			$this->skip_whitespace();
< 			if ($this->has_data())
< 			{
< 				$this->state = 'standalone_name';
< 			}
< 			else
< 			{
< 				$this->state = 'emit';
< 			}
< 		}
< 		else
< 		{
< 			$this->state = false;
< 		}
< 	}
< 
< 	public function standalone_name()
< 	{
< 		if (substr($this->data, $this->position, 10) === 'standalone')
< 		{
< 			$this->position += 10;
< 			$this->skip_whitespace();
< 			$this->state = 'standalone_equals';
< 		}
< 		else
< 		{
< 			$this->state = false;
< 		}
< 	}
< 
< 	public function standalone_equals()
< 	{
< 		if (substr($this->data, $this->position, 1) === '=')
< 		{
< 			$this->position++;
< 			$this->skip_whitespace();
< 			$this->state = 'standalone_value';
< 		}
< 		else
< 		{
< 			$this->state = false;
< 		}
< 	}
< 
< 	public function standalone_value()
< 	{
< 		if ($standalone = $this->get_value())
< 		{
< 			switch ($standalone)
< 			{
< 				case 'yes':
< 					$this->standalone = true;
< 					break;
< 
< 				case 'no':
< 					$this->standalone = false;
< 					break;
< 
< 				default:
< 					$this->state = false;
< 					return;
< 			}
< 
< 			$this->skip_whitespace();
< 			if ($this->has_data())
< 			{
< 				$this->state = false;
< 			}
< 			else
< 			{
< 				$this->state = 'emit';
< 			}
< 		}
< 		else
< 		{
< 			$this->state = false;
< 		}


	}
}