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
|
----------------------------------------------------------
-- Licensed under the GNU General Public License version 2
-- * Copyright (C) 2009 Adrian C. <anrxc_sysphere_org>
----------------------------------------------------------
-- {{{ Grab environment
local tonumber = tonumber
local io = { open = io.open }
local setmetatable = setmetatable
local math = { floor = math.floor }
local string = {
find = string.find,
match = string.match,
format = string.format
}
-- }}}
-- Bat: provides state, charge, and remaining time for a requested battery
module("vicious.bat")
-- {{{ Battery widget type
local function worker(format, batid)
local battery_state = {
["full"] = "↯",
["unknown"] = "⌁",
["charged"] = "↯",
["charging"] = "+",
["discharging"] = "-"
}
-- Get /proc/acpi/battery info
local finfo = io.open("/proc/acpi/battery/"..batid.."/info")
local infofile = finfo:read("*all")
finfo:close()
-- Check if the file wasn't found or the battery isn't present
if infofile == nil or string.find(infofile, "present:[%s]+no") then
return {"/", "/", "/"}
else
-- Get capacity information
local capacity = string.match(infofile, "last full capacity:[%s]+([%d]+).*")
-- Get /proc/acpi/battery state
local fstate = io.open("/proc/acpi/battery/"..batid.."/state")
local statefile = fstate:read("*all")
fstate:close()
-- Get state information
local state = string.match(statefile, "charging state:[%s]+([%a]+).*")
local state = battery_state[state] or battery_state["unknown"]
-- Get charge information
local rate = string.match(statefile, "present rate:[%s]+([%d]+).*")
local remaining = string.match(statefile, "remaining capacity:[%s]+([%d]+).*")
-- Calculate percentage
local percent = math.floor(remaining / capacity * 100)
local percent = string.format("%02d", percent)
-- Calculate remaining (charging or discharging) time
if state == "+" then
timeleft = (tonumber(capacity) - tonumber(remaining)) / tonumber(rate)
elseif state == "-" then
timeleft = tonumber(remaining) / tonumber(rate)
else
return { state, percent, "/" }
end
local hoursleft = math.floor(timeleft)
local minutesleft = math.floor((timeleft - hoursleft) * 60 )
local time = string.format("%02d:%02d", hoursleft, minutesleft)
return {state, percent, time}
end
end
-- }}}
setmetatable(_M, { __call = function(_, ...) return worker(...) end })
|
