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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
-----------------------------------------------------------------------------
-- |
-- Module : Plugins.Monitors.Batt
-- Copyright : (c) 2010, 2011, 2012, 2013, 2015, 2016 Jose A Ortega
-- (c) 2010 Andrea Rossato, Petr Rockai
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
-- Stability : unstable
-- Portability : unportable
--
-- A battery monitor for Xmobar
--
-----------------------------------------------------------------------------
module Plugins.Monitors.Batt ( battConfig, runBatt, runBatt' ) where
import Control.Exception (SomeException, handle)
import Plugins.Monitors.Common
import System.FilePath ((</>))
import System.IO (IOMode(ReadMode), hGetLine, withFile)
import System.Posix.Files (fileExist)
import System.Console.GetOpt
import Data.List (sort, sortOn, group)
import Data.Maybe (fromMaybe)
import Text.Read (readMaybe)
data BattOpts = BattOpts
{ onString :: String
, offString :: String
, idleString :: String
, posColor :: Maybe String
, lowWColor :: Maybe String
, mediumWColor :: Maybe String
, highWColor :: Maybe String
, lowThreshold :: Float
, highThreshold :: Float
, onlineFile :: FilePath
, scale :: Float
, onIconPattern :: Maybe IconPattern
, offIconPattern :: Maybe IconPattern
, idleIconPattern :: Maybe IconPattern
}
defaultOpts :: BattOpts
defaultOpts = BattOpts
{ onString = "On"
, offString = "Off"
, idleString = "On"
, posColor = Nothing
, lowWColor = Nothing
, mediumWColor = Nothing
, highWColor = Nothing
, lowThreshold = 10
, highThreshold = 12
, onlineFile = "AC/online"
, scale = 1e6
, onIconPattern = Nothing
, offIconPattern = Nothing
, idleIconPattern = Nothing
}
options :: [OptDescr (BattOpts -> BattOpts)]
options =
[ Option "O" ["on"] (ReqArg (\x o -> o { onString = x }) "") ""
, Option "o" ["off"] (ReqArg (\x o -> o { offString = x }) "") ""
, Option "i" ["idle"] (ReqArg (\x o -> o { idleString = x }) "") ""
, Option "p" ["positive"] (ReqArg (\x o -> o { posColor = Just x }) "") ""
, Option "l" ["low"] (ReqArg (\x o -> o { lowWColor = Just x }) "") ""
, Option "m" ["medium"] (ReqArg (\x o -> o { mediumWColor = Just x }) "") ""
, Option "h" ["high"] (ReqArg (\x o -> o { highWColor = Just x }) "") ""
, Option "L" ["lowt"] (ReqArg (\x o -> o { lowThreshold = read x }) "") ""
, Option "H" ["hight"] (ReqArg (\x o -> o { highThreshold = read x }) "") ""
, Option "f" ["online"] (ReqArg (\x o -> o { onlineFile = x }) "") ""
, Option "s" ["scale"] (ReqArg (\x o -> o {scale = read x}) "") ""
, Option "" ["on-icon-pattern"] (ReqArg (\x o ->
o { onIconPattern = Just $ parseIconPattern x }) "") ""
, Option "" ["off-icon-pattern"] (ReqArg (\x o ->
o { offIconPattern = Just $ parseIconPattern x }) "") ""
, Option "" ["idle-icon-pattern"] (ReqArg (\x o ->
o { idleIconPattern = Just $ parseIconPattern x }) "") ""
]
parseOpts :: [String] -> IO BattOpts
parseOpts argv =
case getOpt Permute options argv of
(o, _, []) -> return $ foldr id defaultOpts o
(_, _, errs) -> ioError . userError $ concat errs
data Status = Charging | Discharging | Full | Idle | Unknown deriving (Read, Eq)
data Result = Result Float Float Float Status | NA
sysDir :: FilePath
sysDir = "/sys/class/power_supply"
battConfig :: IO MConfig
battConfig = mkMConfig
"Batt: <watts>, <left>% / <timeleft>" -- template
["leftbar", "leftvbar", "left", "acstatus", "timeleft", "watts", "leftipat"] -- replacements
data Files = Files
{ fFull :: String
, fNow :: String
, fVoltage :: String
, fCurrent :: String
, fStatus :: String
, isCurrent :: Bool
} | NoFiles
data Battery = Battery
{ full :: !Float
, now :: !Float
, power :: !Float
, status :: !String
}
safeFileExist :: String -> String -> IO Bool
safeFileExist d f = handle noErrors $ fileExist (d </> f)
where noErrors = const (return False) :: SomeException -> IO Bool
batteryFiles :: String -> IO Files
batteryFiles bat =
do is_charge <- exists "charge_now"
is_energy <- if is_charge then return False else exists "energy_now"
is_power <- exists "power_now"
plain <- exists (if is_charge then "charge_full" else "energy_full")
let cf = if is_power then "power_now" else "current_now"
sf = if plain then "" else "_design"
return $ case (is_charge, is_energy) of
(True, _) -> files "charge" cf sf is_power
(_, True) -> files "energy" cf sf is_power
_ -> NoFiles
where prefix = sysDir </> bat
exists = safeFileExist prefix
files ch cf sf ip = Files { fFull = prefix </> ch ++ "_full" ++ sf
, fNow = prefix </> ch ++ "_now"
, fCurrent = prefix </> cf
, fVoltage = prefix </> "voltage_now"
, fStatus = prefix </> "status"
, isCurrent = not ip}
haveAc :: FilePath -> IO Bool
haveAc f =
handle onError $ withFile (sysDir </> f) ReadMode (fmap (== "1") . hGetLine)
where onError = const (return False) :: SomeException -> IO Bool
readBattery :: Float -> Files -> IO Battery
readBattery _ NoFiles = return $ Battery 0 0 0 "Idle"
readBattery sc files =
do a <- grab $ fFull files
b <- grab $ fNow files
d <- grab $ fCurrent files
s <- grabs $ fStatus files
let sc' = if isCurrent files then sc / 10 else sc
a' = max a b -- sometimes the reported max charge is lower than
return $ Battery (3600 * a' / sc') -- wattseconds
(3600 * b / sc') -- wattseconds
(d / sc') -- watts
s -- string: Discharging/Charging/Full
where grab f = handle onError $ withFile f ReadMode (fmap read . hGetLine)
onError = const (return (-1)) :: SomeException -> IO Float
grabs f = handle onError' $ withFile f ReadMode hGetLine
onError' = const (return "Idle") :: SomeException -> IO String
readBatteries :: BattOpts -> [Files] -> IO Result
readBatteries opts bfs =
do bats <- mapM (readBattery (scale opts)) (take 3 bfs)
ac <- haveAc (onlineFile opts)
let sign = if ac then 1 else -1
ft = sum (map full bats)
left = if ft > 0 then sum (map now bats) / ft else 0
watts = sign * sum (map power bats)
time = if watts == 0 then 0 else max 0 (sum $ map time' bats)
mwatts = if watts == 0 then 1 else sign * watts
time' b = (if ac then full b - now b else now b) / mwatts
statuses :: [Status]
statuses = map (fromMaybe Unknown . readMaybe)
(sort (map status bats))
acst = head $ last $ sortOn length (group statuses)
return $ if isNaN left then NA else Result left watts time acst
runBatt :: [String] -> Monitor String
runBatt = runBatt' ["BAT0","BAT1","BAT2"]
runBatt' :: [String] -> [String] -> Monitor String
runBatt' bfs args = do
opts <- io $ parseOpts args
c <- io $ readBatteries opts =<< mapM batteryFiles bfs
suffix <- getConfigValue useSuffix
d <- getConfigValue decDigits
nas <- getConfigValue naString
case c of
Result x w t s ->
do l <- fmtPercent x
ws <- fmtWatts w opts suffix d
si <- getIconPattern opts s x
parseTemplate (l ++ [fmtStatus opts s nas, fmtTime $ floor t, ws, si])
NA -> getConfigValue naString
where fmtPercent :: Float -> Monitor [String]
fmtPercent x = do
let x' = minimum [1, x]
p <- showPercentWithColors x'
b <- showPercentBar (100 * x') x'
vb <- showVerticalBar (100 * x') x'
return [b, vb, p]
fmtWatts x o s d = do
ws <- showWithPadding $ showDigits d x ++ (if s then "W" else "")
return $ color x o ws
fmtTime :: Integer -> String
fmtTime x = hours ++ ":" ++ if length minutes == 2
then minutes else '0' : minutes
where hours = show (x `div` 3600)
minutes = show ((x `mod` 3600) `div` 60)
fmtStatus opts Idle _ = idleString opts
fmtStatus _ Unknown na = na
fmtStatus opts Full _ = idleString opts
fmtStatus opts Charging _ = onString opts
fmtStatus opts Discharging _ = offString opts
maybeColor Nothing str = str
maybeColor (Just c) str = "<fc=" ++ c ++ ">" ++ str ++ "</fc>"
color x o | x >= 0 = maybeColor (posColor o)
| -x >= highThreshold o = maybeColor (highWColor o)
| -x >= lowThreshold o = maybeColor (mediumWColor o)
| otherwise = maybeColor (lowWColor o)
getIconPattern opts st x = do
let x' = minimum [1, x]
case st of
Unknown -> showIconPattern (offIconPattern opts) x'
Idle -> showIconPattern (idleIconPattern opts) x'
Full -> showIconPattern (idleIconPattern opts) x'
Charging -> showIconPattern (onIconPattern opts) x'
Discharging -> showIconPattern (offIconPattern opts) x'
|
