MAth-Cloud-3.0.0/www.ipsocloud.com/intimamedia.com/www.intimamedia.com/services/common/dicom/Net/URL.php

<?php
// +-----------------------------------------------------------------------+
// | Copyright (c) 2002-2004, Richard Heyes                                |
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// +-----------------------------------------------------------------------+
// | Author: Richard Heyes <richard@php.net>                               |
// +-----------------------------------------------------------------------+
// $Id: URL.php,v 1.31 2004/01/17 15:52:50 pajoye Exp $
// 
// Net_URL Class

class Net_URL
{
    /**
    * Full url
    * @var string
    */
    var $url;
    
    /**
    * Protocol
    * @var string
    */
    var $protocol;

    /**
    * Username
    * @var string
    */
    var $username;

    /**
    * Password
    * @var string
    */
    var $password;

    /**
    * Host
    * @var string
    */
    var $host;
    
    /**
    * Port
    * @var integer
    */
    var $port;
    
    /**
    * Path
    * @var string
    */
    var $path;
    
    /**
    * Query string
    * @var array
    */
    var $querystring;

    /**
    * Anchor
    * @var string
    */
    var $anchor;

    /**
    * Whether to use []
    * @var bool
    */
    var $useBrackets;

    /**
    * Constructor
    *
    * Parses the given url and stores the various parts
    * Defaults are used in certain cases
    *
    * @param string $url         Optional URL
	* @param bool   $useBrackets Whether to use square brackets when
	*                            multiple querystrings with the same name
	*                            exist
    */
    function Net_URL($url = null, $useBrackets = true)
    {
        global $HTTP_SERVER_VARS;

        $this->useBrackets = $useBrackets;
        $this->url         = $url;
        $this->user        = '';
        $this->pass        = '';
		$this->host        = '';
		$this->port        = 80;
		$this->path        = '';
		$this->querystring = array();
		$this->anchor      = '';

		// Only use defaults if not an absolute URL given
		if (!preg_match('/^[a-z0-9]+:\/\//i', $url)) {
	        /**
	        * Figure out host/port
	        */
	        if (!empty($HTTP_SERVER_VARS['HTTP_HOST']) AND preg_match('/^(.*)(:([0-9]+))?$/U', $HTTP_SERVER_VARS['HTTP_HOST'], $matches)) {
	            $host = $matches[1];
	            if (!empty($matches[3])) {
	                $port = $matches[3];
	            } else {
	                $port = '80';
	            }
	        }
	
	        $this->protocol    = 'http' . (@$HTTP_SERVER_VARS['HTTPS'] == 'on' ? 's' : '');
	        $this->user        = '';
	        $this->pass        = '';
	        $this->host        = !empty($host) ? $host : (isset($HTTP_SERVER_VARS['SERVER_NAME']) ? $HTTP_SERVER_VARS['SERVER_NAME'] : 'localhost');
	        $this->port        = !empty($port) ? $port : (isset($HTTP_SERVER_VARS['SERVER_PORT']) ? $HTTP_SERVER_VARS['SERVER_PORT'] : 80);
	        $this->path        = !empty($HTTP_SERVER_VARS['PHP_SELF']) ? $HTTP_SERVER_VARS['PHP_SELF'] : '/';
	        $this->querystring = isset($HTTP_SERVER_VARS['QUERY_STRING']) ? $this->_parseRawQuerystring($HTTP_SERVER_VARS['QUERY_STRING']) : null;
	        $this->anchor      = '';
		}

        // Parse the url and store the various parts
        if (!empty($url)) {
            $urlinfo = parse_url($url);

            // Default querystring
            $this->querystring = array();
    
            foreach ($urlinfo as $key => $value) {
                switch ($key) {
                    case 'scheme':
                        $this->protocol = $value;
                        break;
                    
                    case 'user':
                    case 'pass':
                    case 'host':
                    case 'port':
                        $this->$key = $value;
                        break;

                    case 'path':
                        if ($value{0} == '/') {
                            $this->path = $value;
                        } else {
                            $path = dirname($this->path) == DIRECTORY_SEPARATOR ? '' : dirname($this->path);
                            $this->path = sprintf('%s/%s', $path, $value);
                        }
                        break;
                    
                    case 'query':
                        $this->querystring = $this->_parseRawQueryString($value);
                        break;

                    case 'fragment':
                        $this->anchor = $value;
                        break;
                }
            }
        }
    }

    /**
    * Returns full url
    *
    * @return string Full url
    * @access public
    */
    function getURL()
    {
        $querystring = $this->getQueryString();

        $this->url = $this->protocol . '://'
                   . $this->user . (!empty($this->pass) ? ':' : '')
                   . $this->pass . (!empty($this->user) ? '@' : '')
                   . $this->host . ($this->port == '80' ? '' : ':' . $this->port)
                   . $this->path
                   . (!empty($querystring) ? '?' . $querystring : '')
                   . (!empty($this->anchor) ? '#' . $this->anchor : '');

        return $this->url;
    }

    /**
    * Adds a querystring item
    *
    * @param  string $name       Name of item
    * @param  string $value      Value of item
    * @param  bool   $preencoded Whether value is urlencoded or not, default = not
    * @access public
    */
    function addQueryString($name, $value, $preencoded = false)
    {
        if ($preencoded) {
            $this->querystring[$name] = $value;
        } else {
            $this->querystring[$name] = is_array($value)? array_map('rawurlencode', $value): rawurlencode($value);
        }
    }    

    /**
    * Removes a querystring item
    *
    * @param  string $name Name of item
    * @access public
    */
    function removeQueryString($name)
    {
        if (isset($this->querystring[$name])) {
            unset($this->querystring[$name]);
        }
    }    
    
    /**
    * Sets the querystring to literally what you supply
    *
    * @param  string $querystring The querystring data. Should be of the format foo=bar&x=y etc
    * @access public
    */
    function addRawQueryString($querystring)
    {
        $this->querystring = $this->_parseRawQueryString($querystring);
    }
    
    /**
    * Returns flat querystring
    *
    * @return string Querystring
    * @access public
    */
    function getQueryString()
    {
        if (!empty($this->querystring)) {
            foreach ($this->querystring as $name => $value) {
                if (is_array($value)) {
                    foreach ($value as $k => $v) {
                        $querystring[] = $this->useBrackets ? sprintf('%s[%s]=%s', $name, $k, $v) : ($name . '=' . $v);
                    }
                } elseif (!is_null($value)) {
                    $querystring[] = $name . '=' . $value;
                } else {
                    $querystring[] = $name;
                }
            }
            $querystring = implode('&', $querystring);
        } else {
            $querystring = '';
        }

        return $querystring;
    }

    /**
    * Parses raw querystring and returns an array of it
    *
    * @param  string  $querystring The querystring to parse
    * @return array                An array of the querystring data
    * @access private
    */
    function _parseRawQuerystring($querystring)
    {
        $parts  = preg_split('/&/', $querystring, -1, PREG_SPLIT_NO_EMPTY);
        $return = array();
        
        foreach ($parts as $part) {
            if (strpos($part, '=') !== false) {
                $value = substr($part, strpos($part, '=') + 1);
                $key   = substr($part, 0, strpos($part, '='));
            } else {
                $value = null;
                $key   = $part;
            }
            if (substr($key, -2) == '[]') {
                $key = substr($key, 0, -2);
                if (@!is_array($return[$key])) {
                    $return[$key]   = array();
                    $return[$key][] = $value;
                } else {
                    $return[$key][] = $value;
                }
            } elseif (!$this->useBrackets AND !empty($return[$key])) {
                $return[$key]   = (array)$return[$key];
                $return[$key][] = $value;
            } else {
                $return[$key] = $value;
            }
        }

        return $return;
    }
    
    /**
    * Resolves //, ../ and ./ from a path and returns
    * the result. Eg:
    *
    * /foo/bar/../boo.php    => /foo/boo.php
    * /foo/bar/../../boo.php => /boo.php
    * /foo/bar/.././/boo.php => /foo/boo.php
    *
    * This method can also be called statically.
    *
    * @param  string $url URL path to resolve
    * @return string      The result
    */
    function resolvePath($path)
    {
        $path = explode('/', str_replace('//', '/', $path));
        
        for ($i=0; $i<count($path); $i++) {
            if ($path[$i] == '.') {
                unset($path[$i]);
                $path = array_values($path);
                $i--;

            } elseif ($path[$i] == '..' AND ($i > 1 OR ($i == 1 AND $path[0] != '') ) ) {
                unset($path[$i]);
                unset($path[$i-1]);
                $path = array_values($path);
                $i -= 2;

            } elseif ($path[$i] == '..' AND $i == 1 AND $path[0] == '') {
                unset($path[$i]);
                $path = array_values($path);
                $i--;

            } else {
                continue;
            }
        }

        return implode('/', $path);
    }
}
?>