Uri.php

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<?php
class Slim_Http_Uri {
    
    protected static $scheme;
    
    protected static $baseUri;
    
    protected static $uri;
    
    protected static $queryString;
    
    public static function getBaseUri( $reload = false ) {
        if ( $reload || is_null(self::$baseUri) ) {
            $requestUri = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : $_SERVER['PHP_SELF']; //Full Request URI
            $scriptName = $_SERVER['SCRIPT_NAME']; //Script path from docroot
            $baseUri = strpos($requestUri, $scriptName) === 0 ? $scriptName : str_replace('\\', '/', dirname($scriptName));
            self::$baseUri = rtrim($baseUri, '/');
        }
        return self::$baseUri;
    }

    public static function getUri( $reload = false ) {
        if ( $reload || is_null(self::$uri) ) {
            $uri = '';
            if ( !empty($_SERVER['PATH_INFO']) ) {
                $uri = $_SERVER['PATH_INFO'];
            } else {
                if ( isset($_SERVER['REQUEST_URI']) ) {
                    $uri = parse_url(self::getScheme() . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'], PHP_URL_PATH);
                } else if ( isset($_SERVER['PHP_SELF']) ) {
                    $uri = $_SERVER['PHP_SELF'];
                } else {
                    throw new RuntimeException('Unable to detect request URI');
                }
            }
            if ( self::getBaseUri() !== '' && strpos($uri, self::getBaseUri()) === 0 ) {
                $uri = substr($uri, strlen(self::getBaseUri()));
            }
            self::$uri = '/' . ltrim($uri, '/');
        }
        return self::$uri;
    }

    public static function getScheme( $reload = false ) {
        if ( $reload || is_null(self::$scheme) ) {
            self::$scheme = ( empty($_SERVER['HTTPS']) || $_SERVER['HTTPS'] === 'off' ) ? 'http' : 'https';
        }
        return self::$scheme;
    }

    public static function getQueryString( $reload = false ) {
        if ( $reload || is_null(self::$queryString) ) {
            self::$queryString = $_SERVER['QUERY_STRING'];
        }
        return self::$queryString;
    }

}