Merge pull request #181 from inthepoche/dev

beta4

1 files changed, 997 insertions, 0 deletions

diff --git a/inc/3rdparty/simplepie/SimplePie/IRI.php b/inc/3rdparty/simplepie/SimplePie/IRI.php
new file mode 100644
index 00000000..0fead324
--- /dev/null
+++ b/inc/3rdparty/simplepie/SimplePie/IRI.php
@@ -0,0 +1,997 @@
+<?php
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2009, Ryan Parman, Geoffrey 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
+ * @version 1.3-dev
+ * @copyright 2004-2010 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @author Ryan Parman
+ * @author Geoffrey Sneddon
+ * @author Ryan McCue
+ * @link http://simplepie.org/ SimplePie
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ * @todo phpDoc comments
+ */
+
+/**
+ * IRI parser/serialiser
+ *
+ * @package SimplePie
+ */
+class SimplePie_IRI
+{
+        /**
+         * Scheme
+         *
+         * @access private
+         * @var string
+         */
+        var $scheme;
+
+        /**
+         * User Information
+         *
+         * @access private
+         * @var string
+         */
+        var $userinfo;
+
+        /**
+         * Host
+         *
+         * @access private
+         * @var string
+         */
+        var $host;
+
+        /**
+         * Port
+         *
+         * @access private
+         * @var string
+         */
+        var $port;
+
+        /**
+         * Path
+         *
+         * @access private
+         * @var string
+         */
+        var $path;
+
+        /**
+         * Query
+         *
+         * @access private
+         * @var string
+         */
+        var $query;
+
+        /**
+         * Fragment
+         *
+         * @access private
+         * @var string
+         */
+        var $fragment;
+
+        /**
+         * Whether the object represents a valid IRI
+         *
+         * @access private
+         * @var array
+         */
+        var $valid = array();
+
+        /**
+         * Return the entire IRI when you try and read the object as a string
+         *
+         * @access public
+         * @return string
+         */
+        public function __toString()
+        {
+                return $this->get_iri();
+        }
+
+        /**
+         * Create a new IRI object, from a specified string
+         *
+         * @access public
+         * @param string $iri
+         * @return SimplePie_IRI
+         */
+        public function __construct($iri)
+        {
+                $iri = (string) $iri;
+                if ($iri !== '')
+                {
+                        $parsed = $this->parse_iri($iri);
+                        $this->set_scheme($parsed['scheme']);
+                        $this->set_authority($parsed['authority']);
+                        $this->set_path($parsed['path']);
+                        $this->set_query($parsed['query']);
+                        $this->set_fragment($parsed['fragment']);
+                }
+        }
+
+        /**
+         * Create a new IRI object by resolving a relative IRI
+         *
+         * @static
+         * @access public
+         * @param SimplePie_IRI $base Base IRI
+         * @param string $relative Relative IRI
+         * @return SimplePie_IRI
+         */
+        public static function absolutize($base, $relative)
+        {
+                $relative = (string) $relative;
+                if ($relative !== '')
+                {
+                        $relative = new SimplePie_IRI($relative);
+                        if ($relative->get_scheme() !== null)
+                        {
+                                $target = $relative;
+                        }
+                        elseif ($base->get_iri() !== null)
+                        {
+                                if ($relative->get_authority() !== null)
+                                {
+                                        $target = $relative;
+                                        $target->set_scheme($base->get_scheme());
+                                }
+                                else
+                                {
+                                        $target = new SimplePie_IRI('');
+                                        $target->set_scheme($base->get_scheme());
+                                        $target->set_userinfo($base->get_userinfo());
+                                        $target->set_host($base->get_host());
+                                        $target->set_port($base->get_port());
+                                        if ($relative->get_path() !== null)
+                                        {
+                                                if (strpos($relative->get_path(), '/') === 0)
+                                                {
+                                                        $target->set_path($relative->get_path());
+                                                }
+                                                elseif (($base->get_userinfo() !== null || $base->get_host() !== null || $base->get_port() !== null) && $base->get_path() === null)
+                                                {
+                                                        $target->set_path('/' . $relative->get_path());
+                                                }
+                                                elseif (($last_segment = strrpos($base->get_path(), '/')) !== false)
+                                                {
+                                                        $target->set_path(substr($base->get_path(), 0, $last_segment + 1) . $relative->get_path());
+                                                }
+                                                else
+                                                {
+                                                        $target->set_path($relative->get_path());
+                                                }
+                                                $target->set_query($relative->get_query());
+                                        }
+                                        else
+                                        {
+                                                $target->set_path($base->get_path());
+                                                if ($relative->get_query() !== null)
+                                                {
+                                                        $target->set_query($relative->get_query());
+                                                }
+                                                elseif ($base->get_query() !== null)
+                                                {
+                                                        $target->set_query($base->get_query());
+                                                }
+                                        }
+                                }
+                                $target->set_fragment($relative->get_fragment());
+                        }
+                        else
+                        {
+                                // No base URL, just return the relative URL
+                                $target = $relative;
+                        }
+                }
+                else
+                {
+                        $target = $base;
+                }
+                return $target;
+        }
+
+        /**
+         * Parse an IRI into scheme/authority/path/query/fragment segments
+         *
+         * @access private
+         * @param string $iri
+         * @return array
+         */
+        public function parse_iri($iri)
+        {
+                preg_match('/^(([^:\/?#]+):)?(\/\/([^\/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?$/', $iri, $match);
+                for ($i = count($match); $i <= 9; $i++)
+                {
+                        $match[$i] = '';
+                }
+                return array('scheme' => $match[2], 'authority' => $match[4], 'path' => $match[5], 'query' => $match[7], 'fragment' => $match[9]);
+        }
+
+        /**
+         * Remove dot segments from a path
+         *
+         * @access private
+         * @param string $input
+         * @return string
+         */
+        public function remove_dot_segments($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)
+                        {
+                                $input = substr_replace($input, '/', 0, 3);
+                        }
+                        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)
+                        {
+                                $input = substr_replace($input, '/', 0, 4);
+                                $output = substr_replace($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 $valid_chars Valid characters not in iunreserved or iprivate (this is ASCII-only)
+         * @param int $case Normalise case
+         * @param bool $iprivate Allow iprivate
+         * @return string
+         */
+        protected function replace_invalid_with_pct_encoding($string, $valid_chars, $case = SIMPLEPIE_SAME_CASE, $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 $valid_chars (the latter is safe because all
+                // pct-encoded sections are now valid).
+                $valid_chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~%';
+
+                // Now replace any bytes that aren't allowed with their pct-encoded versions
+                $position = 0;
+                $strlen = strlen($string);
+                while (($position += strspn($string, $valid_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;
+                                        $strlen += 2;
+                                }
+                        }
+                }
+
+                // Normalise case
+                if ($case & SIMPLEPIE_LOWERCASE)
+                {
+                        $string = strtolower($string);
+                }
+                elseif ($case & SIMPLEPIE_UPPERCASE)
+                {
+                        $string = strtoupper($string);
+                }
+
+                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 $string;
+        }
+
+        /**
+         * Check if the object represents a valid IRI
+         *
+         * @access public
+         * @return bool
+         */
+        public function is_valid()
+        {
+                return array_sum($this->valid) === count($this->valid);
+        }
+
+        /**
+         * Set the scheme. Returns true on success, false on failure (if there are
+         * any invalid characters).
+         *
+         * @access public
+         * @param string $scheme
+         * @return bool
+         */
+        public function set_scheme($scheme)
+        {
+                if ($scheme === null || $scheme === '')
+                {
+                        $this->scheme = null;
+                }
+                else
+                {
+                        $len = strlen($scheme);
+                        switch (true)
+                        {
+                                case $len > 1:
+                                        if (!strspn($scheme, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-.', 1))
+                                        {
+                                                $this->scheme = null;
+                                                $this->valid[__FUNCTION__] = false;
+                                                return false;
+                                        }
+
+                                case $len > 0:
+                                        if (!strspn($scheme, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz', 0, 1))
+                                        {
+                                                $this->scheme = null;
+                                                $this->valid[__FUNCTION__] = false;
+                                                return false;
+                                        }
+                        }
+                        $this->scheme = strtolower($scheme);
+                }
+                $this->valid[__FUNCTION__] = true;
+                return true;
+        }
+
+        /**
+         * Set the authority. Returns true on success, false on failure (if there are
+         * any invalid characters).
+         *
+         * @access public
+         * @param string $authority
+         * @return bool
+         */
+        public function set_authority($authority)
+        {
+                if (($userinfo_end = strrpos($authority, '@')) !== false)
+                {
+                        $userinfo = substr($authority, 0, $userinfo_end);
+                        $authority = substr($authority, $userinfo_end + 1);
+                }
+                else
+                {
+                        $userinfo = null;
+                }
+
+                if (($port_start = strpos($authority, ':')) !== false)
+                {
+                        $port = substr($authority, $port_start + 1);
+                        if ($port === false)
+                        {
+                                $port = null;
+                        }
+                        $authority = substr($authority, 0, $port_start);
+                }
+                else
+                {
+                        $port = null;
+                }
+
+                return $this->set_userinfo($userinfo) && $this->set_host($authority) && $this->set_port($port);
+        }
+
+        /**
+         * Set the userinfo.
+         *
+         * @access public
+         * @param string $userinfo
+         * @return bool
+         */
+        public function set_userinfo($userinfo)
+        {
+                if ($userinfo === null || $userinfo === '')
+                {
+                        $this->userinfo = null;
+                }
+                else
+                {
+                        $this->userinfo = $this->replace_invalid_with_pct_encoding($userinfo, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$&\'()*+,;=:');
+                }
+                $this->valid[__FUNCTION__] = true;
+                return true;
+        }
+
+        /**
+         * Set the host. Returns true on success, false on failure (if there are
+         * any invalid characters).
+         *
+         * @access public
+         * @param string $host
+         * @return bool
+         */
+        public function set_host($host)
+        {
+                if ($host === null || $host === '')
+                {
+                        $this->host = null;
+                        $this->valid[__FUNCTION__] = true;
+                        return true;
+                }
+                elseif ($host[0] === '[' && substr($host, -1) === ']')
+                {
+                        if (SimplePie_Net_IPv6::checkIPv6(substr($host, 1, -1)))
+                        {
+                                $this->host = $host;
+                                $this->valid[__FUNCTION__] = true;
+                                return true;
+                        }
+                        else
+                        {
+                                $this->host = null;
+                                $this->valid[__FUNCTION__] = false;
+                                return false;
+                        }
+                }
+                else
+                {
+                        $this->host = $this->replace_invalid_with_pct_encoding($host, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$&\'()*+,;=', SIMPLEPIE_LOWERCASE);
+                        $this->valid[__FUNCTION__] = true;
+                        return true;
+                }
+        }
+
+        /**
+         * Set the port. Returns true on success, false on failure (if there are
+         * any invalid characters).
+         *
+         * @access public
+         * @param string $port
+         * @return bool
+         */
+        public function set_port($port)
+        {
+                if ($port === null || $port === '')
+                {
+                        $this->port = null;
+                        $this->valid[__FUNCTION__] = true;
+                        return true;
+                }
+                elseif (strspn($port, '0123456789') === strlen($port))
+                {
+                        $this->port = (int) $port;
+                        $this->valid[__FUNCTION__] = true;
+                        return true;
+                }
+                else
+                {
+                        $this->port = null;
+                        $this->valid[__FUNCTION__] = false;
+                        return false;
+                }
+        }
+
+        /**
+         * Set the path.
+         *
+         * @access public
+         * @param string $path
+         * @return bool
+         */
+        public function set_path($path)
+        {
+                if ($path === null || $path === '')
+                {
+                        $this->path = null;
+                        $this->valid[__FUNCTION__] = true;
+                        return true;
+                }
+                elseif (substr($path, 0, 2) === '//' && $this->userinfo === null && $this->host === null && $this->port === null)
+                {
+                        $this->path = null;
+                        $this->valid[__FUNCTION__] = false;
+                        return false;
+                }
+                else
+                {
+                        $this->path = $this->replace_invalid_with_pct_encoding($path, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$&\'()*+,;=@/');
+                        if ($this->scheme !== null)
+                        {
+                                $this->path = $this->remove_dot_segments($this->path);
+                        }
+                        $this->valid[__FUNCTION__] = true;
+                        return true;
+                }
+        }
+
+        /**
+         * Set the query.
+         *
+         * @access public
+         * @param string $query
+         * @return bool
+         */
+        public function set_query($query)
+        {
+                if ($query === null || $query === '')
+                {
+                        $this->query = null;
+                }
+                else
+                {
+                        $this->query = $this->replace_invalid_with_pct_encoding($query, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$\'()*+,;:@/?&=');
+                }
+                $this->valid[__FUNCTION__] = true;
+                return true;
+        }
+
+        /**
+         * Set the fragment.
+         *
+         * @access public
+         * @param string $fragment
+         * @return bool
+         */
+        public function set_fragment($fragment)
+        {
+                if ($fragment === null || $fragment === '')
+                {
+                        $this->fragment = null;
+                }
+                else
+                {
+                        $this->fragment = $this->replace_invalid_with_pct_encoding($fragment, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$&\'()*+,;=:@/?');
+                }
+                $this->valid[__FUNCTION__] = true;
+                return true;
+        }
+
+        /**
+         * Get the complete IRI
+         *
+         * @access public
+         * @return string
+         */
+        public function get_iri()
+        {
+                $iri = '';
+                if ($this->scheme !== null)
+                {
+                        $iri .= $this->scheme . ':';
+                }
+                if (($authority = $this->get_authority()) !== null)
+                {
+                        $iri .= '//' . $authority;
+                }
+                if ($this->path !== null)
+                {
+                        $iri .= $this->path;
+                }
+                if ($this->query !== null)
+                {
+                        $iri .= '?' . $this->query;
+                }
+                if ($this->fragment !== null)
+                {
+                        $iri .= '#' . $this->fragment;
+                }
+
+                if ($iri !== '')
+                {
+                        return $iri;
+                }
+                else
+                {
+                        return null;
+                }
+        }
+
+        /**
+         * Get the scheme
+         *
+         * @access public
+         * @return string
+         */
+        public function get_scheme()
+        {
+                return $this->scheme;
+        }
+
+        /**
+         * Get the complete authority
+         *
+         * @access public
+         * @return string
+         */
+        public function get_authority()
+        {
+                $authority = '';
+                if ($this->userinfo !== null)
+                {
+                        $authority .= $this->userinfo . '@';
+                }
+                if ($this->host !== null)
+                {
+                        $authority .= $this->host;
+                }
+                if ($this->port !== null)
+                {
+                        $authority .= ':' . $this->port;
+                }
+
+                if ($authority !== '')
+                {
+                        return $authority;
+                }
+                else
+                {
+                        return null;
+                }
+        }
+
+        /**
+         * Get the user information
+         *
+         * @access public
+         * @return string
+         */
+        public function get_userinfo()
+        {
+                return $this->userinfo;
+        }
+
+        /**
+         * Get the host
+         *
+         * @access public
+         * @return string
+         */
+        public function get_host()
+        {
+                return $this->host;
+        }
+
+        /**
+         * Get the port
+         *
+         * @access public
+         * @return string
+         */
+        public function get_port()
+        {
+                return $this->port;
+        }
+
+        /**
+         * Get the path
+         *
+         * @access public
+         * @return string
+         */
+        public function get_path()
+        {
+                return $this->path;
+        }
+
+        /**
+         * Get the query
+         *
+         * @access public
+         * @return string
+         */
+        public function get_query()
+        {
+                return $this->query;
+        }
+
+        /**
+         * Get the fragment
+         *
+         * @access public
+         * @return string
+         */
+        public function get_fragment()
+        {
+                return $this->fragment;
+        }
+}