1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
-----------------------------------------------------------------------------
-- |
-- Module : Monitors.Weather
-- Copyright : (c) Andrea Rossato
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Andrea Rossato <andrea.rossato@unibz.it>
-- Stability : unstable
-- Portability : unportable
--
-- A weather monitor for XMobar
--
-----------------------------------------------------------------------------
module Main where
import Monitors.Common
import Data.IORef
import System.Process
import System.Exit
import System.IO
import Text.ParserCombinators.Parsec
monitorConfig :: IO MConfig
monitorConfig =
do lc <- newIORef "#BFBFBF"
l <- newIORef 15
nc <- newIORef "#00FF00"
h <- newIORef 27
hc <- newIORef "#FF0000"
t <- newIORef "<station>: <tempC>C, rh <rh>% (<hour>)"
p <- newIORef package
u <- newIORef "station ID"
a <- newIORef []
e <- newIORef ["station"
, "stationState"
, "year"
, "month"
, "day"
, "hour"
, "wind"
, "visibility"
, "skyCondition"
, "tempC"
, "tempF"
, "dewPoint"
, "rh"
,"pressure"
]
return $ MC nc l lc h hc t p u a e
data WeatherInfo =
WI { stationPlace :: String
, stationState :: String
, year :: String
, month :: String
, day :: String
, hour :: String
, wind :: String
, visibility :: String
, skyCondition :: String
, temperature :: Float
, dewPoint :: String
, humidity :: Float
, pressure :: String
} deriving (Show)
pTime :: Parser (String, String, String, String)
pTime = do y <- getNumbersAsString
char '.'
m <- getNumbersAsString
char '.'
d <- getNumbersAsString
char ' '
(h:hh:mi:mimi) <- getNumbersAsString
char ' '
return (y, m, d ,([h]++[hh]++":"++[mi]++mimi))
pTemp :: Parser Float
pTemp = do string ": "
manyTill anyChar $ char '('
s <- manyTill digit $ (char ' ' <|> char '.')
skipRestOfLine
return $read s
pRh :: Parser Float
pRh = do string ": "
s <- manyTill digit $ (char '%' <|> char '.')
return $ read s
parseData :: Parser [WeatherInfo]
parseData =
do st <- getAllBut ","
space
ss <- getAllBut "("
skipRestOfLine >> getAllBut "/"
(y,m,d,h) <- pTime
skipRestOfLine >> string "Wind: "
w <- manyTill anyChar $ newline
manyTill skipRestOfLine $ string "Visibility: "
v <- manyTill anyChar $ newline
manyTill skipRestOfLine $ string "Sky conditions: "
sk <- manyTill anyChar $ newline
manyTill skipRestOfLine $ string "Temperature"
temp <- pTemp
manyTill skipRestOfLine $ string "Dew Point: "
dp <- manyTill anyChar $ newline
manyTill skipRestOfLine $ string "Relative Humidity"
rh <- pRh
manyTill skipRestOfLine $ string "Pressure (altimeter): "
p <- manyTill anyChar $ newline
manyTill skipRestOfLine eof
return $ [WI st ss y m d h w v sk temp dp rh p]
defUrl :: String
defUrl = "http://weather.noaa.gov/pub/data/observations/metar/decoded/"
getData :: String -> IO String
getData url=
do (i,o,e,p) <- runInteractiveCommand ("curl " ++ defUrl ++ url ++ ".TXT")
exit <- waitForProcess p
let closeHandles = do hClose o
hClose i
hClose e
case exit of
ExitSuccess -> do str <- hGetContents o
return str
_ -> do closeHandles
return "Could not retrieve data"
formatWeather :: [WeatherInfo] -> Monitor String
formatWeather [(WI st ss y m d h w v sk temp dp r p)] =
do cel <- showWithColors show temp
far <- showWithColors (show . takeDigits 1) (((9 / 5) * temp) + 32)
rh <- showWithColors show r
parseTemplate [st, ss, y, m, d, h, w, v, sk, cel, far, dp, rh , p ]
formatWeather _ = return "N/A"
runWeather :: [String] -> Monitor String
runWeather str =
do d <- io $ getData $ head str
i <- io $ runP parseData d
formatWeather i
package :: String
package = "xmb-weather"
main :: IO ()
main =
do let af = return "No station ID specified"
runMonitor monitorConfig af runWeather
|
