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<?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
 */

/**
 * IRI parser/serialiser/normaliser
 *
 * @package SimplePie
 * @subpackage HTTP
 * @author Sam Sneddon
 * @author Steve Minutillo
 * @author Ryan McCue
 * @copyright 2007-2012 Sam Sneddon, Steve Minutillo, Ryan McCue
 * @license http://www.opensource.org/licenses/bsd-license.php
 */
class SimplePie_IRI
{
	/**
	 * Scheme
	 *
	 * @var string
	 */
	protected $scheme = null;

	/**
	 * User Information
	 *
	 * @var string
	 */
	protected $iuserinfo = null;

	/**
	 * ihost
	 *
	 * @var string
	 */
	protected $ihost = null;

	/**
	 * Port
	 *
	 * @var string
	 */
	protected $port = null;

	/**
	 * ipath
	 *
	 * @var string
	 */
	protected $ipath = '';

	/**
	 * iquery
	 *
	 * @var string
	 */
	protected $iquery = null;

	/**
	 * ifragment
	 *
	 * @var string
	 */
	protected $ifragment = null;

	/**
	 * Normalization database
	 *
	 * Each key is the scheme, each value is an array with each key as the IRI
	 * part and value as the default value for that part.
	 */
	protected $normalization = array(
		'acap' => array(
			'port' => 674
		),
		'dict' => array(
			'port' => 2628
		),
		'file' => array(
			'ihost' => 'localhost'
		),
		'http' => array(
			'port' => 80,
			'ipath' => '/'
		),
		'https' => array(
			'port' => 443,
			'ipath' => '/'
		),
	);

	/**
	 * Return the entire IRI when you try and read the object as a string
	 *
	 * @return string
	 */
	public function __toString()
	{
		return $this->get_iri();
	}

	/**
	 * Overload __set() to provide access via properties
	 *
	 * @param string $name Property name
	 * @param mixed $value Property value
	 */
	public function __set($name, $value)
	{
		if (method_exists($this, 'set_' . $name))
		{
			call_user_func(array($this, 'set_' . $name), $value);
		}
		elseif (
			   $name === 'iauthority'
			|| $name === 'iuserinfo'
			|| $name === 'ihost'
			|| $name === 'ipath'
			|| $name === 'iquery'
			|| $name === 'ifragment'
		)
		{
			call_user_func(array($this, 'set_' . substr($name, 1)), $value);
		}
	}

	/**
	 * Overload __get() to provide access via properties
	 *
	 * @param string $name Property name
	 * @return mixed
	 */
	public function __get($name)
	{
		// isset() returns false for null, we don't want to do that
		// Also why we use array_key_exists below instead of isset()
		$props = get_object_vars($this);

		if (
			$name === 'iri' ||
			$name === 'uri' ||
			$name === 'iauthority' ||
			$name === 'authority'
		)
		{
			$return = $this->{"get_$name"}();
		}
		elseif (array_key_exists($name, $props))
		{
			$return = $this->$name;
		}
		// host -> ihost
		elseif (($prop = 'i' . $name) && array_key_exists($prop, $props))
		{
			$name = $prop;
			$return = $this->$prop;
		}
		// ischeme -> scheme
		elseif (($prop = substr($name, 1)) && array_key_exists($prop, $props))
		{
			$name = $prop;
			$return = $this->$prop;
		}
		else
		{
			trigger_error('Undefined property: ' . get_class($this) . '::' . $name, E_USER_NOTICE);
			$return = null;
		}

		if ($return === null && isset($this->normalization[$this->scheme][$name]))
		{
			return $this->normalization[$this->scheme][$name];
		}

		return $return;
	}

	/**
	 * Overload __isset() to provide access via properties
	 *
	 * @param string $name Property name
	 * @return bool
	 */
	public function __isset($name)
	{
		return method_exists($this, 'get_' . $name) || isset($this->$name);
	}

	/**
	 * Overload __unset() to provide access via properties
	 *
	 * @param string $name Property name
	 */
	public function __unset($name)
	{
		if (method_exists($this, 'set_' . $name))
		{
			call_user_func(array($this, 'set_' . $name), '');
		}
	}

	/**
	 * Create a new IRI object, from a specified string
	 *
	 * @param string $iri
	 */
	public function __construct($iri = null)
	{
		$this->set_iri($iri);
	}

	/**
	 * Clean up
	 */
	public function __destruct() {
	    $this->set_iri(null, true);
	    $this->set_path(null, true);
	    $this->set_authority(null, true);
	}

	/**
	 * Create a new IRI object by resolving a relative IRI
	 *
	 * Returns false if $base is not absolute, otherwise an IRI.
	 *
	 * @param IRI|string $base (Absolute) Base IRI
	 * @param IRI|string $relative Relative IRI
	 * @return IRI|false
	 */
	public static function absolutize($base, $relative)
	{
		if (!($relative instanceof SimplePie_IRI))
		{
			$relative = new SimplePie_IRI($relative);
		}
		if (!$relative->is_valid())
		{
			return false;
		}
		elseif ($relative->scheme !== null)
		{
			return clone $relative;
		}
		else
		{
			if (!($base instanceof SimplePie_IRI))
			{
				$base = new SimplePie_IRI($base);
			}
			if ($base->scheme !== null && $base->is_valid())
			{
				if ($relative->get_iri() !== '')
				{
					if ($relative->iuserinfo !== null || $relative->ihost !== null || $relative->port !== null)
					{
						$target = clone $relative;
						$target->scheme = $base->scheme;
					}
					else
					{
						$target = new SimplePie_IRI;
						$target->scheme = $base->scheme;
						$target->iuserinfo = $base->iuserinfo;
						$target->ihost = $base->ihost;
						$target->port = $base->port;
						if ($relative->ipath !== '')
						{
							if ($relative->ipath[0] === '/')
							{
								$target->ipath = $relative->ipath;
							}
							elseif (($base->iuserinfo !== null || $base->ihost !== null || $base->port !== null) && $base->ipath === '')
							{
								$target->ipath = '/' . $relative->ipath;
							}
							elseif (($last_segment = strrpos($base->ipath, '/')) !== false)
							{
								$target->ipath = substr($base->ipath, 0, $last_segment + 1) . $relative->ipath;
							}
							else
							{
								$target->ipath = $relative->ipath;
							}
							$target->ipath = $target->remove_dot_segments($target->ipath);
							$target->iquery = $relative->iquery;
						}
						else
						{
							$target->ipath = $base->ipath;
							if ($relative->iquery !== null)
							{
								$target->iquery = $relative->iquery;
							}
							elseif ($base->iquery !== null)
							{
								$target->iquery = $base->iquery;
							}
						}
						$target->ifragment = $relative->ifragment;
					}
				}
				else
				{
					$target = clone $base;
					$target->ifragment = null;
				}
				$target->scheme_normalization();
				return $target;
			}

			return false;
		}
	}

	/**
	 * Parse an IRI into scheme/authority/path/query/fragment segments
	 *
	 * @param string $iri
	 * @return array
	 */
	protected function parse_iri($iri)
	{
		$iri = trim($iri, "\x20\x09\x0A\x0C\x0D");
		if (preg_match('/^((?P<scheme>[^:\/?#]+):)?(\/\/(?P<authority>[^\/?#]*))?(?P<path>[^?#]*)(\?(?P<query>[^#]*))?(#(?P<fragment>.*))?$/', $iri, $match))
		{
			if ($match[1] === '')
			{
				$match['scheme'] = null;
			}
			if (!isset($match[3]) || $match[3] === '')
			{
				$match['authority'] = null;
			}
			if (!isset($match[5]))
			{
				$match['path'] = '';
			}
			if (!isset($match[6]) || $match[6] === '')
			{
				$match['query'] = null;
			}
			if (!isset($match[8]) || $match[8] === '')
			{
				$match['fragment'] = null;
			}
			return $match;
		}

		// This can occur when a paragraph is accidentally parsed as a URI
		return false;
	}

	/**
	 * Remove dot segments from a path
	 *
	 * @param string $input
	 * @return string
	 */
	protected function remove_dot_segments($input)
	{
		$output = '';
		while (strpos($input, './') !== false || strpos($input, '/.') !== false || $input === '.' || $input === '..')
		{
			// A: If the input buffer begins with a prefix of "../" or "./", then remove that prefix from the input buffer; otherwise,
			if (strpos($input, '../') === 0)
			{
				$input = substr($input, 3);
			}
			elseif (strpos($input, './') === 0)
			{
				$input = substr($input, 2);
			}
			// B: if the input buffer begins with a prefix of "/./" or "/.", where "." is a complete path segment, then replace that prefix with "/" in the input buffer; otherwise,
			elseif (strpos($input, '/./') === 0)
			{
				$input = substr($input, 2);
			}
			elseif ($input === '/.')
			{
				$input = '/';
			}
			// C: if the input buffer begins with a prefix of "/../" or "/..", where ".." is a complete path segment, then replace that prefix with "/" in the input buffer and remove the last segment and its preceding "/" (if any) from the output buffer; otherwise,
			elseif (strpos($input, '/../') === 0)
			{
				$input = substr($input, 3);
				$output = substr_replace($output, '', strrpos($output, '/'));
			}
			elseif ($input === '/..')
			{
				$input = '/';
				$output = substr_replace($output, '', strrpos($output, '/'));
			}
			// D: if the input buffer consists only of "." or "..", then remove that from the input buffer; otherwise,
			elseif ($input === '.' || $input === '..')
			{
				$input = '';
			}
			// E: move the first path segment in the input buffer to the end of the output buffer, including the initial "/" character (if any) and any subsequent characters up to, but not including, the next "/" character or the end of the input buffer
			elseif (($pos = strpos($input, '/', 1)) !== false)
			{
				$output .= substr($input, 0, $pos);
				$input = substr_replace($input, '', 0, $pos);
			}
			else
			{
				$output .= $input;
				$input = '';
			}
		}
		return $output . $input;
	}

	/**
	 * Replace invalid character with percent encoding
	 *
	 * @param string $string Input string
	 * @param string $extra_chars Valid characters not in iunreserved or
	 *                            iprivate (this is ASCII-only)
	 * @param bool $iprivate Allow iprivate
	 * @return string
	 */
	protected function replace_invalid_with_pct_encoding($string, $extra_chars, $iprivate = false)
	{
		// Normalize as many pct-encoded sections as possible
		$string = preg_replace_callback('/(?:%[A-Fa-f0-9]{2})+/', array($this, 'remove_iunreserved_percent_encoded'), $string);

		// Replace invalid percent characters
		$string = preg_replace('/%(?![A-Fa-f0-9]{2})/', '%25', $string);

		// Add unreserved and % to $extra_chars (the latter is safe because all
		// pct-encoded sections are now valid).
		$extra_chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~%';

		// Now replace any bytes that aren't allowed with their pct-encoded versions
		$position = 0;
		$strlen = strlen($string);
		while (($position += strspn($string, $extra_chars, $position)) < $strlen)
		{
			$value = ord($string[$position]);

			// Start position
			$start = $position;

			// By default we are valid
			$valid = true;

			// No one byte sequences are valid due to the while.
			// Two byte sequence:
			if (($value & 0xE0) === 0xC0)
			{
				$character = ($value & 0x1F) << 6;
				$length = 2;
				$remaining = 1;
			}
			// Three byte sequence:
			elseif (($value & 0xF0) === 0xE0)
			{
				$character = ($value & 0x0F) << 12;
				$length = 3;
				$remaining = 2;
			}
			// Four byte sequence:
			elseif (($value & 0xF8) === 0xF0)
			{
				$character = ($value & 0x07) << 18;
				$length = 4;
				$remaining = 3;
			}
			// Invalid byte:
			else
			{
				$valid = false;
				$length = 1;
				$remaining = 0;
			}

			if ($remaining)
			{
				if ($position + $length <= $strlen)
				{
					for ($position++; $remaining; $position++)
					{
						$value = ord($string[$position]);

						// Check that the byte is valid, then add it to the character:
						if (($value & 0xC0) === 0x80)
						{
							$character |= ($value & 0x3F) << (--$remaining * 6);
						}
						// If it is invalid, count the sequence as invalid and reprocess the current byte:
						else
						{
							$valid = false;
							$position--;
							break;
						}
					}
				}
				else
				{
					$position = $strlen - 1;
					$valid = false;
				}
			}

			// Percent encode anything invalid or not in ucschar
			if (
				// Invalid sequences
				!$valid
				// Non-shortest form sequences are invalid
				|| $length > 1 && $character <= 0x7F
				|| $length > 2 && $character <= 0x7FF
				|| $length > 3 && $character <= 0xFFFF
				// Outside of range of ucschar codepoints
				// Noncharacters
				|| ($character & 0xFFFE) === 0xFFFE
				|| $character >= 0xFDD0 && $character <= 0xFDEF
				|| (
					// Everything else not in ucschar
					   $character > 0xD7FF && $character < 0xF900
					|| $character < 0xA0
					|| $character > 0xEFFFD
				)
				&& (
					// Everything not in iprivate, if it applies
					   !$iprivate
					|| $character < 0xE000
					|| $character > 0x10FFFD
				)
			)
			{
				// If we were a character, pretend we weren't, but rather an error.
				if ($valid)
					$position--;

				for ($j = $start; $j <= $position; $j++)
				{
					$string = substr_replace($string, sprintf('%%%02X', ord($string[$j])), $j, 1);
					$j += 2;
					$position += 2;
					$strlen += 2;
				}
			}
		}

		return $string;
	}

	/**
	 * Callback function for preg_replace_callback.
	 *
	 * Removes sequences of percent encoded bytes that represent UTF-8
	 * encoded characters in iunreserved
	 *
	 * @param array $match PCRE match
	 * @return string Replacement
	 */
	protected function remove_iunreserved_percent_encoded($match)
	{
		// As we just have valid percent encoded sequences we can just explode
		// and ignore the first member of the returned array (an empty string).
		$bytes = explode('%', $match[0]);

		// Initialize the new string (this is what will be returned) and that
		// there are no bytes remaining in the current sequence (unsurprising
		// at the first byte!).
		$string = '';
		$remaining = 0;

		// Loop over each and every byte, and set $value to its value
		for ($i = 1, $len = count($bytes); $i < $len; $i++)
		{
			$value = hexdec($bytes[$i]);

			// If we're the first byte of sequence:
			if (!$remaining)
			{
				// Start position
				$start = $i;

				// By default we are valid
				$valid = true;

				// One byte sequence:
				if ($value <= 0x7F)
				{
					$character = $value;
					$length = 1;
				}
				// Two byte sequence:
				elseif (($value & 0xE0) === 0xC0)
				{
					$character = ($value & 0x1F) << 6;
					$length = 2;
					$remaining = 1;
				}
				// Three byte sequence:
				elseif (($value & 0xF0) === 0xE0)
				{
					$character = ($value & 0x0F) << 12;
					$length = 3;
					$remaining = 2;
				}
				// Four byte sequence:
				elseif (($value & 0xF8) === 0xF0)
				{
					$character = ($value & 0x07) << 18;
					$length = 4;
					$remaining = 3;
				}
				// Invalid byte:
				else
				{
					$valid = false;
					$remaining = 0;
				}
			}
			// Continuation byte:
			else
			{
				// Check that the byte is valid, then add it to the character:
				if (($value & 0xC0) === 0x80)
				{
					$remaining--;
					$character |= ($value & 0x3F) << ($remaining * 6);
				}
				// If it is invalid, count the sequence as invalid and reprocess the current byte as the start of a sequence:
				else
				{
					$valid = false;
					$remaining = 0;
					$i--;
				}
			}

			// If we've reached the end of the current byte sequence, append it to Unicode::$data
			if (!$remaining)
			{
				// Percent encode anything invalid or not in iunreserved
				if (
					// Invalid sequences
					!$valid
					// Non-shortest form sequences are invalid
					|| $length > 1 && $character <= 0x7F
					|| $length > 2 && $character <= 0x7FF
					|| $length > 3 && $character <= 0xFFFF
					// Outside of range of iunreserved codepoints
					|| $character < 0x2D
					|| $character > 0xEFFFD
					// Noncharacters
					|| ($character & 0xFFFE) === 0xFFFE
					|| $character >= 0xFDD0 && $character <= 0xFDEF
					// Everything else not in iunreserved (this is all BMP)
					|| $character === 0x2F
					|| $character > 0x39 && $character < 0x41
					|| $character > 0x5A && $character < 0x61
					|| $character > 0x7A && $character < 0x7E
					|| $character > 0x7E && $character < 0xA0
					|| $character > 0xD7FF && $character < 0xF900
				)
				{
					for ($j = $start; $j <= $i; $j++)
					{
						$string .= '%' . strtoupper($bytes[$j]);
					}
				}
				else
				{
					for ($j = $start; $j <= $i; $j++)
					{
						$string .= chr(hexdec($bytes[$j]));
					}
				}
			}
		}

		// If we have any bytes left over they are invalid (i.e., we are
		// mid-way through a multi-byte sequence)
		if ($remaining)
		{
			for ($j = $start; $j < $len; $j++)
			{
				$string .= '%' . strtoupper($bytes[$j]);
			}
		}

		return $string;
	}

	protected function scheme_normalization()
	{
		if (isset($this->normalization[$this->scheme]['iuserinfo']) && $this->iuserinfo === $this->normalization[$this->scheme]['iuserinfo'])
		{
			$this->iuserinfo = null;
		}
		if (isset($this->normalization[$this->scheme]['ihost']) && $this->ihost === $this->normalization[$this->scheme]['ihost'])
		{
			$this->ihost = null;
		}
		if (isset($this->normalization[$this->scheme]['port']) && $this->port === $this->normalization[$this->scheme]['port'])
		{
			$this->port = null;
		}
		if (isset($this->normalization[$this->scheme]['ipath']) && $this->ipath === $this->normalization[$this->scheme]['ipath'])
		{
			$this->ipath = '';
		}
		if (isset($this->normalization[$this->scheme]['iquery']) && $this->iquery === $this->normalization[$this->scheme]['iquery'])
		{
			$this->iquery = null;
		}
		if (isset($this->normalization[$this->scheme]['ifragment']) && $this->ifragment === $this->normalization[$this->scheme]['ifragment'])
		{
			$this->ifragment = null;
		}
	}

	/**
	 * Check if the object represents a valid IRI. This needs to be done on each
	 * call as some things change depending on another part of the IRI.
	 *
	 * @return bool
	 */
	public function is_valid()
	{
		if ($this->ipath === '') return true;

		$isauthority = $this->iuserinfo !== null || $this->ihost !== null ||
			$this->port !== null;
		if ($isauthority && $this->ipath[0] === '/') return true;

		if (!$isauthority && (substr($this->ipath, 0, 2) === '//')) return false;

		// Relative urls cannot have a colon in the first path segment (and the
		// slashes themselves are not included so skip the first character).
		if (!$this->scheme && !$isauthority &&
		    strpos($this->ipath, ':') !== false &&
		    strpos($this->ipath, '/', 1) !== false &&
		    strpos($this->ipath, ':') < strpos($this->ipath, '/', 1)) return false;

		return true;
	}

	/**
	 * Set the entire IRI. Returns true on success, false on failure (if there
	 * are any invalid characters).
	 *
	 * @param string $iri
	 * @return bool
	 */
	public function set_iri($iri, $clear_cache = false)
	{
		static $cache;
		if ($clear_cache)
		{
			$cache = null;
			return;
		}
		if (!$cache)
		{
			$cache = array();
		}

		if ($iri === null)
		{
			return true;
		}
		elseif (isset($cache[$iri]))
		{
			list($this->scheme,
				 $this->iuserinfo,
				 $this->ihost,
				 $this->port,
				 $this->ipath,
				 $this->iquery,
				 $this->ifragment,
				 $return) = $cache[$iri];
			return $return;
		}

		$parsed = $this->parse_iri((string) $iri);
		if (!$parsed)
		{
			return false;
		}

		$return = $this->set_scheme($parsed['scheme'])
			&& $this->set_authority($parsed['authority'])
			&& $this->set_path($parsed['path'])
			&& $this->set_query($parsed['query'])
			&& $this->set_fragment($parsed['fragment']);

		$cache[$iri] = array($this->scheme,
							 $this->iuserinfo,
							 $this->ihost,
							 $this->port,
							 $this->ipath,
							 $this->iquery,
							 $this->ifragment,
							 $return);
		return $return;
	}

	/**
	 * Set the scheme. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @param string $scheme
	 * @return bool
	 */
	public function set_scheme($scheme)
	{
		if ($scheme === null)
		{
			$this->scheme = null;
		}
		elseif (!preg_match('/^[A-Za-z][0-9A-Za-z+\-.]*$/', $scheme))
		{
			$this->scheme = null;
			return false;
		}
		else
		{
			$this->scheme = strtolower($scheme);
		}
		return true;
	}

	/**
	 * Set the authority. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @param string $authority
	 * @return bool
	 */
	public function set_authority($authority, $clear_cache = false)
	{
		static $cache;
		if ($clear_cache)
		{
			$cache = null;
			return;
		}
		if (!$cache)
			$cache = array();

		if ($authority === null)
		{
			$this->iuserinfo = null;
			$this->ihost = null;
			$this->port = null;
			return true;
		}
		elseif (isset($cache[$authority]))
		{
			list($this->iuserinfo,
				 $this->ihost,
				 $this->port,
				 $return) = $cache[$authority];

			return $return;
		}

		$remaining = $authority;
		if (($iuserinfo_end = strrpos($remaining, '@')) !== false)
		{
			$iuserinfo = substr($remaining, 0, $iuserinfo_end);
			$remaining = substr($remaining, $iuserinfo_end + 1);
		}
		else
		{
			$iuserinfo = null;
		}
		if (($port_start = strpos($remaining, ':', strpos($remaining, ']'))) !== false)
		{
			if (($port = substr($remaining, $port_start + 1)) === false)
			{
				$port = null;
			}
			$remaining = substr($remaining, 0, $port_start);
		}
		else
		{
			$port = null;
		}

		$return = $this->set_userinfo($iuserinfo) &&
				  $this->set_host($remaining) &&
				  $this->set_port($port);

		$cache[$authority] = array($this->iuserinfo,
								   $this->ihost,
								   $this->port,
								   $return);

		return $return;
	}

	/**
	 * Set the iuserinfo.
	 *
	 * @param string $iuserinfo
	 * @return bool
	 */
	public function set_userinfo($iuserinfo)
	{
		if ($iuserinfo === null)
		{
			$this->iuserinfo = null;
		}
		else
		{
			$this->iuserinfo = $this->replace_invalid_with_pct_encoding($iuserinfo, '!$&\'()*+,;=:');
			$this->scheme_normalization();
		}

		return true;
	}

	/**
	 * Set the ihost. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @param string $ihost
	 * @return bool
	 */
	public function set_host($ihost)
	{
		if ($ihost === null)
		{
			$this->ihost = null;
			return true;
		}
		elseif (substr($ihost, 0, 1) === '[' && substr($ihost, -1) === ']')
		{
			if (SimplePie_Net_IPv6::check_ipv6(substr($ihost, 1, -1)))
			{
				$this->ihost = '[' . SimplePie_Net_IPv6::compress(substr($ihost, 1, -1)) . ']';
			}
			else
			{
				$this->ihost = null;
				return false;
			}
		}
		else
		{
			$ihost = $this->replace_invalid_with_pct_encoding($ihost, '!$&\'()*+,;=');

			// Lowercase, but ignore pct-encoded sections (as they should
			// remain uppercase). This must be done after the previous step
			// as that can add unescaped characters.
			$position = 0;
			$strlen = strlen($ihost);
			while (($position += strcspn($ihost, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ%', $position)) < $strlen)
			{
				if ($ihost[$position] === '%')
				{
					$position += 3;
				}
				else
				{
					$ihost[$position] = strtolower($ihost[$position]);
					$position++;
				}
			}

			$this->ihost = $ihost;
		}

		$this->scheme_normalization();

		return true;
	}

	/**
	 * Set the port. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @param string $port
	 * @return bool
	 */
	public function set_port($port)
	{
		if ($port === null)
		{
			$this->port = null;
			return true;
		}
		elseif (strspn($port, '0123456789') === strlen($port))
		{
			$this->port = (int) $port;
			$this->scheme_normalization();
			return true;
		}

		$this->port = null;
		return false;
	}

	/**
	 * Set the ipath.
	 *
	 * @param string $ipath
	 * @return bool
	 */
	public function set_path($ipath, $clear_cache = false)
	{
		static $cache;
		if ($clear_cache)
		{
			$cache = null;
			return;
		}
		if (!$cache)
		{
			$cache = array();
		}

		$ipath = (string) $ipath;

		if (isset($cache[$ipath]))
		{
			$this->ipath = $cache[$ipath][(int) ($this->scheme !== null)];
		}
		else
		{
			$valid = $this->replace_invalid_with_pct_encoding($ipath, '!$&\'()*+,;=@:/');
			$removed = $this->remove_dot_segments($valid);

			$cache[$ipath] = array($valid, $removed);
			$this->ipath =  ($this->scheme !== null) ? $removed : $valid;
		}

		$this->scheme_normalization();
		return true;
	}

	/**
	 * Set the iquery.
	 *
	 * @param string $iquery
	 * @return bool
	 */
	public function set_query($iquery)
	{
		if ($iquery === null)
		{
			$this->iquery = null;
		}
		else
		{
			$this->iquery = $this->replace_invalid_with_pct_encoding($iquery, '!$&\'()*+,;=:@/?', true);
			$this->scheme_normalization();
		}
		return true;
	}

	/**
	 * Set the ifragment.
	 *
	 * @param string $ifragment
	 * @return bool
	 */
	public function set_fragment($ifragment)
	{
		if ($ifragment === null)
		{
			$this->ifragment = null;
		}
		else
		{
			$this->ifragment = $this->replace_invalid_with_pct_encoding($ifragment, '!$&\'()*+,;=:@/?');
			$this->scheme_normalization();
		}
		return true;
	}

	/**
	 * Convert an IRI to a URI (or parts thereof)
	 *
	 * @return string
	 */
	public function to_uri($string)
	{
		static $non_ascii;
		if (!$non_ascii)
		{
			$non_ascii = implode('', range("\x80", "\xFF"));
		}

		$position = 0;
		$strlen = strlen($string);
		while (($position += strcspn($string, $non_ascii, $position)) < $strlen)
		{
			$string = substr_replace($string, sprintf('%%%02X', ord($string[$position])), $position, 1);
			$position += 3;
			$strlen += 2;
		}

		return $string;
	}

	/**
	 * Get the complete IRI
	 *
	 * @return string
	 */
	public function get_iri()
	{
		if (!$this->is_valid())
		{
			return false;
		}

		$iri = '';
		if ($this->scheme !== null)
		{
			$iri .= $this->scheme . ':';
		}
		if (($iauthority = $this->get_iauthority()) !== null)
		{
			$iri .= '//' . $iauthority;
		}
		if ($this->ipath !== '')
		{
			$iri .= $this->ipath;
		}
        elseif (!empty($this->normalization[$this->scheme]['ipath']) && $iauthority !== null && $iauthority !== '')
		{
			$iri .= $this->normalization[$this->scheme]['ipath'];
		}
		if ($this->iquery !== null)
		{
			$iri .= '?' . $this->iquery;
		}
		if ($this->ifragment !== null)
		{
			$iri .= '#' . $this->ifragment;
		}

		return $iri;
	}

	/**
	 * Get the complete URI
	 *
	 * @return string
	 */
	public function get_uri()
	{
		return $this->to_uri($this->get_iri());
	}

	/**
	 * Get the complete iauthority
	 *
	 * @return string
	 */
	protected function get_iauthority()
	{
		if ($this->iuserinfo !== null || $this->ihost !== null || $this->port !== null)
		{
			$iauthority = '';
			if ($this->iuserinfo !== null)
			{
				$iauthority .= $this->iuserinfo . '@';
			}
			if ($this->ihost !== null)
			{
				$iauthority .= $this->ihost;
			}
            if ($this->port !== null && $this->port !== 0)
			{
				$iauthority .= ':' . $this->port;
			}
			return $iauthority;
		}

		return null;
	}

	/**
	 * Get the complete authority
	 *
	 * @return string
	 */
	protected function get_authority()
	{
		$iauthority = $this->get_iauthority();
		if (is_string($iauthority))
			return $this->to_uri($iauthority);

		return $iauthority;
	}
}

AISLING Pharma – Affy Pharma Pvt Ltd

SYREGO

POWDER FOR ORAL SUSPENSION
30ML (HDPE BOTTLE)

Composition

Cefpodoxime 50mg/5ml <

Indications & Uses

UTIs, LRTs

SYREGO – CV

POWDER FOR ORAL SUSPENSION
30ML (GLASS BOTTLE)

Composition

Cefpodoxime 50mg + Potassium Clavulanate 31.25mg/ 5ml

Indications & Uses

Upper & lower respiratory infections, Uncomplicated skin infections, Urinary Tract Infections

AISIMOX – CLAV

POWDER FOR ORAL SUSPENSION
30ML (GLASS +HDPE BOTTLE)

Composition

Amoxycillin 200mg + Potassium clavulanate 28.50 mg/ 5ml

Indications & Uses

Community Acquired Pneumonia, Acute Exacerbations of Chronic Bronchitis, Upper Respiratory Tract Infections, Urinary Tract Infections

CEFTAR – CV

POWDER FOR ORAL SUSPENSION
30ML (GLASS BOTTLE)

Composition

Cefixime 50mg + Potassium clavulanate 31.25mg/5ml

Indications & Uses

Urinary Tract Inefctions, AECB, Otitis Media, Typhoid/p>

CEFTAR

POWDER FOR ORAL SUSPENSION
30ML (HDPE BOTTLE)

Composition

Cefixime 50mg/5ml

Indications & Uses

Urinary Tract Inefctions, Gastroenteritis

FADRO

ORAL SUSPENSION
15 ml

Composition

Azithromycin 200mg/5ml

Indications & Uses

Community Acquired Pneumonia, Acute Exacerbations of Chronic Bronchitis,

DOFLAM – DS

ORAL SUSPENSION
60 ml

Composition

Paracetamol 250mg/5ml

Indications & Uses

Fever, Pain

ACE – M

ORAL SUSPENSION
60 ml

Composition

Paracetamol 125mg + Mefenamic Acid 50mg/5ml

Indications & Uses

Pain, Fever

FLORIN – 50

ORAL SUSPENSION
30 ml

Composition

Ofloxacin 50mg/5ml

Indications & Uses

Acute exacerbations of chronic bronchitis, community acquired Pneumonia, soft skin and skin structure infections

ACE – CET – P

SYRUP
60 ml

Composition

Paracetamol 125mg + PPH 5mg + Cetirizine HCI 2mg/5ml

Indications & Uses

Fever, common cold & Flu

KWOSNIL – DSR

CAPSULES ( HARD GELATIN)
10X10 (Alu-Alu)

Composition

Pantoprazole 40mg (EC) + Domperidone 30mg (SR)

Indications & Uses

GERD, Dyspepsia, Acid Peptic Disorders, Gastritis

TAPEN-DSR

CAPSULES ( HARD GELATIN)
11X10 (Alu-Alu)

Composition

Rabeprazole 20mg (EC) + Domperidone SR

Indications & Uses

GERD, Dyspepsia, Acid Peptic Disorders, Gastritis

KWOSNIL – DSR

CAPSULES ( HARD GELATIN)
10X10 (Alu-Alu)

Composition

Pantoprazole 40mg (EC) + Domperidone 30mg (SR)

Indications & Uses

GERD, Dyspepsia, Acid Peptic Disorders, Gastritis

ZAPRA – DSR

CAPSULES ( HARD GELATIN)
11X10 (Alu-Alu)

Composition

Rabeprazole 20mg (EC) + Domperidone SR

Indications & Uses

GERD, Dyspepsia, Acid Peptic Disorders, Gastritis

KWOSNIL – 40

INJECTION
40ml

Composition

Pantoprazole Sodium 40mg + NaCL

Indications & Uses

Acid-peptic disorders in hospitalized patients, Zollinger – Ellison Syndrome, Treatment of GERD Associated with Erasive Esophagitis, GL Bleed

NATIC

SUSPENSION
170ml

Composition

Activated Dimethicone 25mg + Magnesium Hydroxide 200mg+ Aluminium Hydroxide Gel 200mg/10ml

Indications & Uses

Heartburn, Acid Indigestion

AISZYME

SYRUP
200ml

Composition

Alpha Amylase (1:2000) 50mg, Pepsin(1:3000) 10mg/5ml

Indications & Uses

Dyspepsia, Flatulence, Anorexia, Pancreatic Insufficiency

BONFOL – Z

CAPSULES (HARD GELATIN)
10X3X10

Composition

Vitamin C 75mg + Vitamin B12 5mcg + Carbonyl Iron 100mg + Folic Acid 1.5mg + Zinc Sulphate 61.8mg

Indications & Uses

Hyphocromic Anemia in Pregnancy, Chronic and / or Acute Blood Loss, Post-gynaesurgery, Iron Deficiency Anemia

AID-D3 60K

CAPSULES (SOFT GELATIN)
10X1X4

Composition

Cholecalciferol 60000 UI

Indications & Uses

Osteoporosis, Osteoarthritis, Musculoskeletal Pain, Type- 2 Diabetes, Menstrual Irregularities, Pre-eclampsia, IUGR

ROBOTONE

ORAL SUSPENSION
200 ml

Composition

Calcium Carbonate 625mg, Vitamin D3 125 IU/5ml

Indications & Uses

Osteomalacia, Osteoporosis, Fractures, Premenstrual Syndrome

HAEMLING

SYRUP (IRON TONIC)
300 ml

Composition

Iron (III) Hydroxide Polymaltose 50mg, Folic Acid 0.5mg/15ml

Indications & Uses

Pregnancy and lactation, Iron Deficiency Anaemia, Anaemia due to Excessive Haemorrhage, Anaemia Associated with Infections and Malignant Disease

CIUM

CAPSULES (SOFT GELATIN)
5X2X15

Composition

Calcitriol 0.25mcg + Calcium Carbonate 500mg + Zinc Sulphate 7.5mg

Indications & Uses

Osteoporosis, Hypoparathyroidism, Pregnancy & Lactation, Premenstrual Syndrome

MEF – DSPAS

TABLETS
20X10

Composition

Mefenamic Acid 250mg + Dicyclomine HCI 10mg

Indications & Uses

Dysmenorrhea, Irritable Bowel Syndrome, Colic and Bladder Spasm, Abdominal Pain

NAS – 2

TABLETS (BLISTERS)
20X10

Composition

Nimeulide 100mg + Paracetamo; 325mg

Indications & Uses

Minor Pain of Arthiritis, Muscular Aches, Backache, Toothache, Headache, Pre-menstrual and Menstrual Cramps

NAC – P

TABLETS
20X10

Composition

Aceclofenac 100mg + Paracetamol 325mg

Indications & Uses

Arthritis Pain, Soft Tissue Trauma Including Sprains, Musculoskeletal Pain, Pain Following Dental Extraction

TP – FORTE

TABLETS (BLISTERS)
20X10

Composition

Tramadol 37.5mg +Paracetamol 325mg

Indications & Uses

Chronic Back Pain, Osteoarthritis, Postoperative Pain

SYREGO

POWDER FOR ORAL SUSPENSION
30ML (HDPE BOTTLE)

Composition

Cefpodoxime 50mg/5ml <

Indications & Uses

UTIs, LRTs

SWIFT – HEEL

CREAM
20g

Composition

Urea 10% +Lactic Acid 10% + Propylene Glycol 10% + Liquid Paraffin 10%

Indications & Uses

Foot Cracks, Keratolytic

OTIZOB

OINTMENT
15g

Composition

Clotrimazole 1% w/w + Beclomethasone Dipropionate 0.025% w/w + Neomycin 0.5% w/w

Indications & Uses

Eczema, Psoriasis, Corticosteroid Responsive Dermatoses

DANDNIL

LOTION
100 ml

Composition

Ketoconazole 2% w/v

Indications & Uses

Pityriasis, Dandruff

DANDNIL – Z

LOTION
100 ml

Composition

Ketoconazole Shampoo 2% w/v + ZPTO 1% w/v

Indications & Uses

Pityriasis, Dandruff

DANDNIL

SOAP
75g

Composition

Ketoconazole 1% w/w

Indications & Uses

Tinea Versicolor, Prophylaxis of Pityriasis Versicolor

FLUVERA – 200

TABLETS
20X1X1

Composition

Fluconazole 200mg

Indications & Uses

Vaginal Candidiasis, Brochopulmonary Infections, Candiduria, Tinea Pedis, Corposis, Cruris, Versicolor

MAGMA -VIT

SYRUP
200ml

Composition

L-Iysine HCI 25mg + Vitamin B1 2.5mg + Vitamin B2 2.5mg + Vitamin B6 0.75mg + D-panthenol 3mg +Niacinamide 25mg + Mecobalamin 2mcg/10ml

Indications & Uses

Sub-optimal Growth, Poor Weight Gain, Malnutrition, Prolonged Illness

LYCOVERVE GOLD

SYRUP
225ml

Composition

Each 10ml Contains: Lycopene 6% 1000mcg + Vitamin A Palmitate 2500 IU + Vitamin E 10 IU + Ascorbic Acid 50mg + Selenium (as Sodium Selenate) 35mcg + Zinc (As Zinc Gluconate) 3mg + Manganese (as Manganese Gluconate) 2mg + Iodine ( As Potassium Iodine) 100mcg + Copper (As Copper Sulphate0 500mcg + Thiamine HCI 2mg + Riboflavine 3mg + Pyridoxine HCI 1.5mg

Indications & Uses

Tiredness, Stress, Feeling of Weakness, Vitality Deficiency

CAROVI

CAPSULES (SOFT GELATIN)
10X1X10

Composition

Antioxidant, Multivitamin & Multiminerals

Indications & Uses

Tiredness, Stress, Feeling of Weakness, Vitality Deficiency

WEETE

CAPSULES (SOFT GELATIN)
10X1X10

Composition

Vitamin E (Natural) 400 IU + Wheat Germ Oil 100mg + Omega 3 Fatty Acids 30mg

Indications & Uses

Ulcerative colitis, Metabolic Syndrome, Rheumatoid Arthritis, Type-2 Diabetes, Cardiovascular Diseases

CAROVI-4G

CAPSULES (SOFT GELATIN)
10X1X10

Composition

Omega 3 Fatty Acid + Ginseng Extract + Ginkgo Bilaba Extract + Grape Seed Extract + Ginseng Extract + Multimineral + Multivitamin + Antioxidants + Trace Elements

Indications & Uses

Tiredness, Stress, Feeling of Weakness, Vitality Deficiency

CAROVI G

CAPSULES (SOFT GELATIN)
10X1X10

Composition

Ginseng + Multivitamin + Multimineral

Indications & Uses

Tiredness, Stress, Feeling of Weakness, Vitality Deficiency

LYCOVERVE PLUS

CAPSULES (SOFT GELATIN)
10X1X10

Composition

Each SG Contains Lycopene 6% 2000 IU + Vitamin A 2500 IU + Vitamin E Acetate 10 IU + Vitamin C 50 mg + Zinc sulphate Monohydrate 27.45mg + Selenium Dioxide 70mcg

Indications & Uses

Idiopathic Male Infertility, Pre-eclampsia, Prostate Cancer, Cardiovascular Diseases, Diabetes Mellitus

CEFTAR-200 LB

TABLETS (Alu-Alu)
20X10

Composition

Cefixime 200mg + Lactic Acid Bacilus 2.5 billion spores

Indications & Uses

Otitis Media, Pharyngitis & Tonsillitis, Uncomplicated Urinary Tract Infections, Acute Exacerbations of Chronic Bronchitis, Enteric Fever

CEFTAR-CV-325

TABLETS (Alu-Alu)
10X1X6

Composition

Cefixime 200mg + Potassium Clavulanate 125mg

Indications & Uses

Respiratory Tract Infections, Urinary Tract Infections, Skin & Skin Structure Infections

AISIMOX – CLAV 625

TABLETS (Alu-Alu)
10X1X7

Composition

Amoxycillin 500mg + Potassium Clavulanate 125mg

Indications & Uses

Respiratory Tract Infections, Community Acquired Pneumonia, Gynaecological Infections, Acute Exacerbations of Chronic Bronchitis, Skin and Soft Tissue Infections

ROFLOX – O

TABLETS (Blister)
20X10

Composition

Ofloxacin 200mg + Ornidazole 500mg

Indications & Uses

Surgical ions, Diarrheas of Mixed Etiology, Gynaecological Infections, Orofacial and Dental Infections

NTILEVO

TABLETS
10X10

Composition

Levofloxacin 500mg

Indications & Uses

Acute Bacterial Sinusitis, Acute Bacterial Exacerbations of Chronic Bronchitis, Skin & Skin Structure Infections, Chronic Bacterial Prostatitis, Urinary Tract Infections

ROFLOX – O

TABLETS (Alu-Alu)
20X10

Composition

Ofloxacin 200mg

Indications & Uses

Community Acquired Pneumonia, Multiple Drug Resistant-TB, Typhoid

CEFTAR – O

TABLETS (Alu-Alu)
10X1X10

Composition

Cefixime 200mg + Ofloxacin 200mg

Indications & Uses

RTIs, Otitis Media, Sinustis, UTIs, Typhoid

AISIMOX – CLAV – 1.2

INJECTIONS
1.2g

Composition

Amoxycillin 1000mg + Potassium Clavulanate 200mg + WFI

Indications & Uses

Community Acquired Pneumonia, Gynaecological Infections, Upper Respiratory Tract Infections, Skin and Soft Tissue Infections, Urinary Tract Infections, Acute Exacerbations of Chronic Bronchitis

XC – SB 1.5

INJECTIONS
1.5g

Composition

Ceftriaxone 1000mg + Sulbactam 500mg + WFI

Indications & Uses

Gynaecological Infections, Lower Respiratory Tract Infections, Intra-abdominal Infections with Aerobic Organisms, Surgical Prophylaxis

FOPER-SB 1.5

INJECTIONS
1.5gm

Composition

Cefaperazone 1000mg + Sulbactam 500mg +WFI

Indications & Uses

Peritonitis, Bacterial Simusitis, Cholecystitis, Meningitis

M-HAWK

INJECTIONS
1gm

Composition

Meropenem 1gm + WFI

Indications & Uses

Complicated Intra-abdominal Infection (cIAI), Complicated Skin & Skin Structure Infections (cSSSI), Bacterial Meningitis, Noscocomial Pneumonia

PTZ-4.5

INJECTIONS
4.5gm

Composition

Piperacillin 4000mg + Tazobactam 500mg + WFI

Indications & Uses

Intra-abdominal Infections, Complicated Urinary Tract Infections, Febrile Neutropenia, Lower Respiratory Tract Infections

OXIME-200

TABLETS (Alu-Alu)
10X1X6

Composition

Cefpodoxime Proxetil 200mg

Indications & Uses

Pharyngitis, CAP, Tonsilitis

KHAASHNIL

SYRUP
100ml

Composition

Ambroxol HCI 15mg + Guaiphensin 50mg + Terbutaline Sulphate 1.5mg + Mentholated Base/5ml

Indications & Uses

Bronchitis, Productive Cough, Emphysema, Bronchial Asthma

KHAASHNIL – BR

SYRUP
100ml

Composition

Terbutaline Sulphate 2.5mg + Bromhexine HCI 8mg + Guaiphenesin 100mg + Methalated Base/5ml

Indications & Uses

Acute Cough, Abnormal Mucus Secretion, Productive Cough

ENYPHIL

SYRUP
100ml

Composition

Dextromethorphan Hydrobromide 10mg + Phenylpherine 5 mg + Cetrizine 5mg + Mentholated Base/5ml

Indications & Uses

Commom Cold and Flu, Nasal Congestion, Sore Throat

LEVKAST

TABLETS (Alu-Alu)
20X10

Composition

Levocetirizine 5mg + Montelukast 10mg

Indications & Uses

Allergic Rhinitis, Nasal Congestion, Asthma

AISLET

TABLETS (Alu-Alu)
20X10

Composition

Levocetirizine 5mg

Indications & Uses

Chronic Idiopathic Urticaria (CIU), Seasonal Allergic Rhinitis (SAR), Perennial Allergic Rhinitis (PAR)

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