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;; Based on code by Thierry Volpiatto
;; (http://mercurial.intuxication.org/hg/xml-weather)
(require 'xml)
(require 'derived)
;;; config:
(defvar jao-weather-format-id-url
"http://xoap.weather.com/search/search?where=%s")
(defvar jao-weather-format-xml-from-id-url ; id, unit=m,day-forecast=5,login,key
"http://xoap.weather.com/weather/local/%s?cc=*&unit=%s&dayf=%s&prod=xoap&par=%s&key=%s")
(defvar jao-weather-unit "m"
"*m mean metric, you will have wind speed in km/h, temperature in °C and so on.")
(defvar jao-weather-login nil)
(defvar jao-weather-key nil)
(defvar jao-weather-day-forecast-num 5
"*Number of days for forecast; Maximum 5.")
(defvar jao-weather-default-id "SPXX0015")
(defvar jao-weather-timer-delay 3600)
(defvar jao-weather-last-data nil)
;;; access:
(defun jao-weather-authentify ()
"Authentify user from .authinfo file.
You have to setup correctly `auth-sources' to make this function
finding the path of your .authinfo file that is normally ~/.authinfo.
Entry in .authinfo should be:
machine xoap.weather.com port http login xxxxx password xxxxxx"
(let ((auth (auth-source-user-or-password '("login" "password")
"xoap.weather.com"
"http")))
(setq jao-weather-login (car auth)
jao-weather-key (cadr auth))))
(defun jao-weather--url (id)
(unless (and jao-weather-login jao-weather-key)
(jao-weather-authentify))
(format jao-weather-format-xml-from-id-url
(or id jao-weather-default-id)
jao-weather-unit
(min jao-weather-day-forecast-num 5)
jao-weather-login
jao-weather-key))
(defvar jao-weather-hook nil)
;; http://xoap.weather.com/weather/local/[locid]
;; Replace the [locid], of course, with the location ID obtained in the previous step.
;; Appended to this URL is a mix of other parameters,
;; some required and some optional. A typical example might be:
;; http://xoap.weather.com/weather/local/NLXX0002?cc=*&dayf=5&prod=xoap&par=[partner id]&key=[license key]
(defun jao-weather--get-info-async (&optional id)
(let ((url (jao-weather--url id))
(url-show-status nil))
(url-retrieve url (lambda (res)
(when (not res)
(let ((data (jao-weather-get-alist)))
(when data
(setq jao-weather-last-data data)
(run-hooks 'jao-weather-hook))))
(kill-buffer (current-buffer))))))
(defun jao-weather--get-info-now (&optional id)
(let* ((url (jao-weather--url id))
(buffer (url-retrieve-synchronously url))
(data (and buffer
(with-current-buffer buffer
(jao-weather-get-alist)))))
(when buffer (kill-buffer buffer))
(when data
(setq jao-weather-last-data data)
(run-hooks 'jao-weather-hook))
data))
;;; formatting:
(defun jao-weather--flist (c fs)
(when c
(let (result)
(dolist (f fs result)
(let ((v (caddr (assoc (cadr f) c))))
(when (and (stringp v) (not (string-equal v "N/A")))
(push (cons (car f) v) result)))))))
(defun jao-weather--parse-cc (cc)
(append (jao-weather--flist cc '((:date lsup)
(:observatory obst)
(:temperature tmp)
(:condition t)
(:pressure r)))
(jao-weather--flist (assoc 'wind cc) '((:windir d)
(:wind-tilt t)
(:gust gust)))))
(defun jao-weather--parse-location (loc)
(jao-weather--flist loc '((:city dnam)
(:time tm)
(:latitude lat)
(:longitude lon)
(:sunrise sunr)
(:sunset suns))))
(defun jao-weather--parse-day (d)
(let ((p2 (assoc 'part
(remove (assoc 'part (cdr d))
(cdr d))))
(wday (or (cdr (assoc 't (cadr d))) "day")))
`(,(cdr (assoc 'dt (cadr d)))
(:weekday . ,wday)
(:weekday-abbrev . ,(substring wday 0 3))
,@(jao-weather--flist (cdr d) '((:max hi)
(:min low)
(:sunrise sunr)
(:sunset suns)
(:humidity hmid)))
,@(jao-weather--flist (assoc 'wind (assoc 'part (cdr d)))
'((:wind-dir 't) (:wind-speed 's)))
,@(jao-weather--flist (assoc 'wind p2) '((:night-wind-dir wea)
(:night-wind-speed s)))
,@(jao-weather--flist p2
'((:night-condition t) (:night-humidity hmid))))))
(defun jao-weather-get-alist ()
(let* ((pxml (car (xml-parse-region (point-min) (point-max))))
(loc (car (xml-get-children pxml 'loc)))
(cc (car (xml-get-children pxml 'cc)))
(dayf (xml-get-children pxml 'dayf))
(dayfs (xml-get-children (car dayf) 'day))
(today (append (jao-weather--parse-cc cc)
(jao-weather--parse-location loc)))
(forecast (mapcar 'jao-weather--parse-day dayfs)))
`((today ,@today) (forecast ,@forecast))))
(defun jao-weather--format-fields (data fields sep)
(if data
(mapconcat (lambda (kv)
(let ((v (cdr (assoc (car kv) data))))
(if (not v) ""
(format (or (cdr kv) "%s") v))))
fields
sep)
""))
(defsubst jao-weather--today-string (fields sep)
(jao-weather--format-fields (cdr (assoc 'today jao-weather-last-data))
fields sep))
(defun jao-weather--forecast-string (n fields sep)
(jao-weather--format-fields (nth n (cdr (assoc 'forecast
jao-weather-last-data)))
fields sep))
;;; update daemon:
(defvar jao-weather--timer nil)
(defun jao-weather-start (&optional delay)
(interactive)
(jao-weather-stop)
(setq jao-weather--timer
(run-with-timer (or delay 0)
jao-weather-timer-delay
'jao-weather--get-info-async)))
(defun jao-weather-stop ()
(interactive)
(when jao-weather--timer
(cancel-timer jao-weather--timer)
(setq jao-weather--timer nil)))
;;; today
(defun jao-weather-today-msg (&optional arg)
(interactive "p")
(when (> arg 4) (jao-weather--get-info-now))
(if (= 4 arg) (jao-weather-forecast-msg)
(message "%s" (jao-weather--today-string '((:temperature . " %s°C")
(:condition . "(%s)")
(:sunrise . "↑ %s")
(:sunset . "↓ %s")
(:date . "[%s]"))
" "))))
(defun jao-weather-forecast-msg (&optional arg)
(interactive "P")
(when arg (jao-weather--get-info-now))
(message " %s" (mapconcat
(lambda (n)
(jao-weather--forecast-string n
'((:weekday-abbrev . "%s ")
(:max . "%s°/")
(:min . "%s°")
(:condition . ", %s")
(:night-condition . ", %s"))
""))
'(1 2 3 4) " | ")))
(defun jao-weather-temperature ()
(string-to-number (jao-weather--today-string '((:temperature)) "")))
(defun jao-weather-temperature* (&optional sep)
(concat (jao-weather--today-string '((:temperature . "%s°")) "")
(or sep " ")
(jao-weather--forecast-string 1
'((:max . "%s°/") (:min . "%s°")
(:night-condition . " %s"))
"")))
;; Provide
(provide 'jao-weather)
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