"Google Weather."
:group 'comm)
-(defcustom google-weather-use-https t
+(defcustom google-weather-use-https nil
"Default protocol to use to access the Google Weather API."
- :group 'google-weather)
+ :group 'google-weather
+ :type 'boolean)
(defconst google-weather-url
"www.google.com/ig/api"
(url-cache-extract (url-cache-create-filename url))
(current-buffer)))
-(defun google-weather-retrieve-data (url &optional expire-time)
+(defun google-weather-retrieve-data-raw (url &optional expire-time)
"Retrieve URL and return its data as string.
If EXPIRE-TIME is set, the data will be fetched from the cache if
their are not older than EXPIRE-TIME seconds. Otherwise, they
(url-retrieve-synchronously url)
(google-weather-cache-fetch url)))
data)
- (with-current-buffer buffer
+ (when (and expired expire-time)
+ (url-store-in-cache buffer))
+ buffer))
+
+(defun google-weather-retrieve-data (url &optional expire-time)
+ "Retrieve URL and return its data as string.
+If EXPIRE-TIME is set, the data will be fetched from the cache if
+their are not older than EXPIRE-TIME seconds. Otherwise, they
+will be fetched and then cached. Therefore, setting EXPIRE-TIME
+to 0 force a cache renewal."
+ (with-current-buffer (google-weather-retrieve-data-raw
+ url expire-time)
(goto-char (point-min))
(unless (search-forward "\n\n" nil t)
(error "Data not found"))
(point) (point-max)
(detect-coding-region (point) (point-max) t))
(set-buffer-multibyte t)
- (setq data (xml-parse-region (point) (point-max)))
- (when (and expired expire-time)
- (url-store-in-cache (current-buffer)))
- (kill-buffer (current-buffer))
- data)))
+ (let ((data (xml-parse-region (point) (point-max))))
+ (kill-buffer (current-buffer))
+ data)))
(defun google-weather-build-url (location &optional language)
"Build URL to retrieve weather for LOCATION in LANGUAGE."
match."
(cdr (assoc (google-weather-data->unit-system data) google-weather-unit-system-temperature-assoc)))
+
+(defun google-weather-data->problem-cause (data)
+ "Return a string if DATA contains a problem cause, `nil' otherwise.
+
+An error message example:
+
+((xml_api_reply
+ ((version . \"1\"))
+ (weather
+ ((module_id . \"0\") (tab_id . \"0\") (mobile_row . \"0\")
+ (mobile_zipped . \"1\") (row . \"0\") (section . \"0\"))
+ (problem_cause ((data . \"Information is temporarily unavailable.\"))))))))"
+ (google-weather-assoc
+ 'problem_cause
+ (google-weather-data->weather data)))
+
(provide 'google-weather)