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- <?php
- /* vim: set expandtab tabstop=4 shiftwidth=4: */
- // +----------------------------------------------------------------------+
- // | PHP version 4 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1997-2004 The PHP Group |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 2.0 of the PHP license, |
- // | that is bundled with this package in the file LICENSE, and is |
- // | available through the world-wide-web at |
- // | http://www.php.net/license/2_02.txt. |
- // | If you did not receive a copy of the PHP license and are unable to |
- // | obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Authors: Alexander Wirtz <alex@pc4p.net> |
- // +----------------------------------------------------------------------+
- //
- // $Id: Weather.php,v 1.32 2005/07/18 08:49:41 eru Exp $
-
- /**
- * @package Services_Weather
- * @filesource
- */
-
- /**
- */
- // {{{ constants
- // {{{ cache times
- define("SERVICES_WEATHER_EXPIRES_UNITS", 900);
- define("SERVICES_WEATHER_EXPIRES_LOCATION", 900);
- define("SERVICES_WEATHER_EXPIRES_WEATHER", 1800);
- define("SERVICES_WEATHER_EXPIRES_FORECAST", 7200);
- define("SERVICES_WEATHER_EXPIRES_LINKS", 43200);
- // }}}
-
- // {{{ error codes
- define("SERVICES_WEATHER_ERROR_SERVICE_NOT_FOUND", 10);
- define("SERVICES_WEATHER_ERROR_UNKNOWN_LOCATION", 11);
- define("SERVICES_WEATHER_ERROR_WRONG_SERVER_DATA", 12);
- define("SERVICES_WEATHER_ERROR_CACHE_INIT_FAILED", 13);
- define("SERVICES_WEATHER_ERROR_DB_NOT_CONNECTED", 14);
- // }}}
-
- // {{{ error codes defined by weather.com
- define("SERVICES_WEATHER_ERROR_UNKNOWN_ERROR", 0);
- define("SERVICES_WEATHER_ERROR_NO_LOCATION", 1);
- define("SERVICES_WEATHER_ERROR_INVALID_LOCATION", 2);
- define("SERVICES_WEATHER_ERROR_INVALID_PARTNER_ID", 100);
- define("SERVICES_WEATHER_ERROR_INVALID_PRODUCT_CODE", 101);
- define("SERVICES_WEATHER_ERROR_INVALID_LICENSE_KEY", 102);
- // }}}
- // }}}
-
- // {{{ class Services_Weather
- /**
- * PEAR::Services_Weather
- *
- * This class acts as an interface to various online weather-services.
- *
- * Services_Weather searches for given locations and retrieves current
- * weather data and, dependant on the used service, also forecasts. Up to
- * now, SOAP services from CapeScience and EJSE, XML from weather.com and
- * METAR/TAF from noaa.gov are supported, further services will get
- * included, if they become available and are properly documented.
- *
- * @author Alexander Wirtz <alex@pc4p.net>
- * @package Services_Weather
- * @license http://www.php.net/license/2_02.txt
- * @version 1.3
- */
- class Services_Weather {
-
- // {{{ &service()
- /**
- * Factory for creating the services-objects
- *
- * Usable keys for the options array are:
- * o debug enables debugging output
- * --- Common Options
- * o cacheType defines what type of cache to use
- * o cacheOptions passes cache options
- * o unitsFormat use (US)-standard, metric or custom units
- * o customUnitsFormat defines the customized units format
- * o httpTimeout sets timeout for HTTP requests
- * o dateFormat string to use for date output
- * o timeFormat string to use for time output
- * --- EJSE Options
- * o none
- * --- GlobalWeather Options
- * o none
- * --- METAR/TAF Options
- * o dsn String for defining the DB connection
- * o dbOptions passes DB options
- * o sourceMetar http, ftp or file - type of data-source for METAR
- * o sourcePathMetar where to look for the source, URI or filepath,
- * of METAR information
- * o sourceTaf http, ftp or file - type of data-source for TAF
- * o sourcePathTaf where to look for the source, URI or filepath,
- * of TAF information
- * --- weather.com Options
- * o partnerID You'll receive these keys after registering
- * o licenseKey with the weather.com XML-service
- *
- * @param string $service
- * @param array $options
- * @return PEAR_Error|object
- * @throws PEAR_Error
- * @throws PEAR_Error::SERVICES_WEATHER_ERROR_SERVICE_NOT_FOUND
- * @access public
- */
- function &service($service, $options = null)
- {
- $service = ucfirst(strtolower($service));
- $classname = "Services_Weather_".$service;
-
- // Check for debugging-mode and set stuff accordingly
- if (is_array($options) && isset($options["debug"]) && $options["debug"] >= 2) {
- if (!defined("SERVICES_WEATHER_DEBUG")) {
- define("SERVICES_WEATHER_DEBUG", true);
- }
- include_once("Services/Weather/".$service.".php");
- } else {
- if (!defined("SERVICES_WEATHER_DEBUG")) {
- define("SERVICES_WEATHER_DEBUG", false);
- }
- @include_once("Services/Weather/".$service.".php");
- }
-
- // No such service... bail out
- if (!class_exists($classname)) {
- return Services_Weather::raiseError(SERVICES_WEATHER_ERROR_SERVICE_NOT_FOUND, __FILE__, __LINE__);
- }
-
- // Create service and return
- $error = null;
- @$obj = &new $classname($options, $error);
-
- if (Services_Weather::isError($error)) {
- return $error;
- } else {
- return $obj;
- }
- }
- // }}}
-
- // {{{ apiVersion()
- /**
- * For your convenience, when I come up with changes in the API...
- *
- * @return string
- * @access public
- */
- function apiVersion()
- {
- return "1.3";
- }
- // }}}
-
- // {{{ _errorMessage()
- /**
- * Returns the message for a certain error code
- *
- * @param PEAR_Error|int $value
- * @return string
- * @access private
- */
- function _errorMessage($value)
- {
- static $errorMessages;
- if (!isset($errorMessages)) {
- $errorMessages = array(
- SERVICES_WEATHER_ERROR_SERVICE_NOT_FOUND => "Requested service could not be found.",
- SERVICES_WEATHER_ERROR_UNKNOWN_LOCATION => "Unknown location provided.",
- SERVICES_WEATHER_ERROR_WRONG_SERVER_DATA => "Server data wrong or not available.",
- SERVICES_WEATHER_ERROR_CACHE_INIT_FAILED => "Cache init was not completed.",
- SERVICES_WEATHER_ERROR_DB_NOT_CONNECTED => "MetarDB is not connected.",
- SERVICES_WEATHER_ERROR_UNKNOWN_ERROR => "An unknown error has occured.",
- SERVICES_WEATHER_ERROR_NO_LOCATION => "No location provided.",
- SERVICES_WEATHER_ERROR_INVALID_LOCATION => "Invalid location provided.",
- SERVICES_WEATHER_ERROR_INVALID_PARTNER_ID => "Invalid partner id.",
- SERVICES_WEATHER_ERROR_INVALID_PRODUCT_CODE => "Invalid product code.",
- SERVICES_WEATHER_ERROR_INVALID_LICENSE_KEY => "Invalid license key."
- );
- }
-
- if (Services_Weather::isError($value)) {
- $value = $value->getCode();
- }
-
- return isset($errorMessages[$value]) ? $errorMessages[$value] : $errorMessages[SERVICES_WEATHER_ERROR_UNKNOWN_ERROR];
- }
- // }}}
-
- // {{{ isError()
- /**
- * Checks for an error object, same as in PEAR
- *
- * @param PEAR_Error|mixed $value
- * @return bool
- * @access public
- */
- function isError($value)
- {
- return (is_object($value) && (strtolower(get_class($value)) == "pear_error" || is_subclass_of($value, "pear_error")));
- }
- // }}}
-
- // {{{ &raiseError()
- /**
- * Creates error, same as in PEAR with a customized flavor
- *
- * @param int $code
- * @param string $file
- * @param int $line
- * @return PEAR_Error
- * @access private
- */
- function &raiseError($code = SERVICES_WEATHER_ERROR_UNKNOWN_ERROR, $file = "", $line = 0)
- {
- // This should improve the performance of the script, as PEAR is only included, when
- // really needed.
- include_once "PEAR.php";
-
- $message = "Services_Weather";
- if ($file != "" && $line > 0) {
- $message .= " (".basename($file).":".$line.")";
- }
- $message .= ": ".Services_Weather::_errorMessage($code);
-
- $error = PEAR::raiseError($message, $code, PEAR_ERROR_RETURN, E_USER_NOTICE, "Services_Weather_Error", null, false);
- return $error;
- }
- // }}}
- }
- // }}}
- ?>
-