[metar.el] NOAA resource has moved

[Mark Oteiza]

Hi,

The resources for weather data have moved from <http://weather.noaa.gov>
to <http://tgftp.nws.noaa.gov>.  Also, nsd_bbsss.txt doesn't appear to
exist anymore, and the format of nsd_cccc.txt is apparently slightly different.

The following patch fixes the aforementioned, AFAICT

diff -u /home/mvo/downloads/metar.el /home/mvo/.emacs.d/elpa/metar-0.2/metar.el
--- /home/mvo/downloads/metar.el        2016-09-27 13:26:33.722294223 -0400
+++ /home/mvo/.emacs.d/elpa/metar-0.2/metar.el  2016-09-27 13:27:37.442802035 
-0400
@@ -83,7 +83,7 @@
                             (const :tag "Degree Kelvin" degK)
                             (const :tag "Degree Fahrenheit" degF)))))
 
-(defcustom metar-stations-info-url "http://weather.noaa.gov/data/nsd_bbsss.txt";
+(defcustom metar-stations-info-url 
"http://tgftp.nws.noaa.gov/data/nsd_cccc.txt";
   "URL to use for retrieving station meta information."
   :group 'metar
   :type 'string)
@@ -117,23 +117,21 @@
                              (split-string entry ";"))
                            (split-string (buffer-string) "\n")))))
        (setq metar-stations nil)
-       (while data
-         (when (and (nth 7 (car data)) (nth 8 (car data))
-                    (not (string= (nth 2 (car data)) "----")))
+       (dolist (entry data)
+         (when (and (nth 7 entry) (nth 8 entry)
+                    (not (string= (nth 0 entry) "----")))
            (setq metar-stations
                  (append
-                  (let ((item (car data)))
-                    (list
-                     (list (cons 'code (nth 2 item))
-                           (cons 'name (nth 3 item))
-                           (cons 'country (nth 5 item))
-                           (cons 'latitude
-                                 (metar-station-convert-dms-to-deg (nth 7 
item)))
-                           (cons 'longitude
-                                 (metar-station-convert-dms-to-deg (nth 8 
item)))
-                           (cons 'altitude (string-to-number (nth 12 item))))))
-                  metar-stations)))
-         (setq data (cdr data)))
+                  (list
+                    (list (cons 'code (nth 0 entry))
+                          (cons 'name (nth 3 entry))
+                          (cons 'country (nth 5 entry))
+                          (cons 'latitude
+                                (metar-station-convert-dms-to-deg (nth 7 
entry)))
+                          (cons 'longitude
+                                (metar-station-convert-dms-to-deg (nth 8 
entry)))
+                          (cons 'altitude (string-to-number (nth 11 entry)))))
+                  metar-stations))))
        ;; (unless metar-timer
        ;;   (setq metar-timer
        ;;      (run-with-timer 600 nil (lambda () (setq metar-stations nil)))))
@@ -281,7 +279,7 @@
                                                  pure))))
 
 (defcustom metar-url
-  "http://weather.noaa.gov/pub/data/observations/metar/stations/%s.TXT";
+  "http://tgftp.nws.noaa.gov/data/observations/metar/stations/%s.TXT";
   "URL used to fetch station specific information.
 %s is replaced with the 4 letter station code."
   :group 'metar