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
|
local gio = require("lgi").Gio
local object = require("gears.object")
local utils = require("utils")
local Battery = {}
Battery.__index = Battery
setmetatable(Battery, {
__call = function (cls, ...) return cls.new(...) end,
})
Battery.STATUS = {
UNKNOWN = 'Unknown',
DISCHARGING = 'Discharging',
CHARGING = 'Charging',
['NOT CHARGING'] = 'Not charging',
FULL = 'Full',
}
function Battery:_readfile(name)
local file = gio.File.new_for_path(self._path .. name)
local contents = file:load_contents(nil)
-- remove trailing newline
if contents then
contents = string.gsub(contents, "%s$", "")
return string.len(contents) > 0 and contents or nil
end
return nil
end
function Battery:_readnum(name)
local val = self:_readfile(name)
return tonumber(val)
end
function Battery:update()
local status = string.upper(self:_readfile('status') or '')
self.status = self.STATUS[status]
if self.status == nil then
utils.log('Battery/' .. self.name, 'Error updating status: %s', tostring(status))
return false
end
self.capacity = self:_readnum('capacity')
self.capacity_level = self:_readfile('capacity_level')
local energy = self:_readnum('energy_now')
local energy_full = self:_readnum('energy_full')
local power = self:_readnum('power_now')
-- try to compute remaining seconds to charge/discharge,
-- if we have the information
self.remaining_seconds = nil
if self.status == self.STATUS.DISCHARGING then
if energy and power and power > 0 then
self.remaining_seconds = 3600 * energy / power
end
elseif self.status == self.STATUS.CHARGING then
if energy and energy_full and power and power > 0 then
self.remaining_seconds = 3600 * (energy_full - energy) / power
end
end
if power ~= nil then
self.power = power / 1e6
end
self:emit_signal('updated')
return true
end
function Battery.new(name)
local self = object({class = Battery})
self.name = name
self._path = '/sys/class/power_supply/' .. name .. '/'
-- skip non-battery power supplies, we don't handle them
local type = self:_readfile('type')
if type ~= 'Battery' then
return nil
end
-- build description string
local desc = nil
-- first try manufacturer+model
local manufacturer = self:_readfile('manufacturer')
local model = self:_readfile('model_name')
if manufacturer or model then
desc = (manufacturer or '') .. (manufacturer and ' ' or '') .. (model or '')
end
if not desc then
local technology = self:_readfile('technology')
desc = (technology or '') .. (technology and ' ' or '') .. type
end
self.desc = desc
if not self:update() then
return nil
end
return self
end
return Battery
|
