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
|
{ lib, runCommandLocal, writeText, python3, libnotify, bc, sfttime }:
let
name = "display-infos-0.1.0";
script = writeText (name + "-script") ''
#!@python3@
import sys
import glob
import subprocess as sub
import os.path as path
import statistics as st
def readint(fn):
with open(fn, 'r') as f:
return int(f.read())
def seconds_to_sft(secs):
p = sub.Popen(["@bc@", "-l"], stdin=sub.PIPE, stdout=sub.PIPE)
(sft, _) = p.communicate(input="scale=2; obase=16; {} / 86400\n".format(secs).encode())
p.terminate()
return str(sft.strip().decode())
charging = readint("/sys/class/power_supply/AC/online")
full = 0
now = 0
# this is "to charged" if charging and "to empty" if not
seconds_remaining = 0
for bat in glob.iglob("/sys/class/power_supply/BAT*"):
# these files might be different for different ACPI/battery providers
# see the full list in acpi.c of the acpi(1) tool
# unit: who knows
full += readint(path.join(bat, "energy_full"))
now += readint(path.join(bat, "energy_now" ))
# in unit?/hours, hopefully the same unit as above
# ACPI is a garbage fire
current_rate = readint(path.join(bat, "power_now"))
if current_rate == 0:
continue
elif charging:
seconds_remaining += 3600 * (full - now) / current_rate
else:
seconds_remaining += 3600 * now / current_rate
bat = round( now/full, 2 )
ac = "⚡ " if charging else ""
sft_remaining = seconds_to_sft(seconds_remaining)
date = sub.run(["date", "+%d.%m. %a %T"], stdout=sub.PIPE).stdout.strip().decode()
dottime = sub.run(["date", "--utc", "+%H·%M"], stdout=sub.PIPE).stdout.strip().decode()
sftdate = sub.run(["@sfttime@"], stdout=sub.PIPE).stdout.strip().decode()
notify = "BAT: {percent}% {ac}{charge}| {date} | {sftdate} | {dottime}".format(
percent = int(bat*100),
ac = ac,
charge = "{} ".format(sft_remaining) if seconds_remaining else "",
date = date,
sftdate = sftdate,
dottime = dottime
)
print(notify)
'';
in
with lib; runCommandLocal "display-infos" {
meta.description = "Script to display time & battery";
} ''
substitute ${script} script \
--replace "@python3@" "${getBin python3}/bin/python3" \
--replace "@bc@" "${getBin bc}/bin/bc" \
--replace "@sfttime@" "${getBin sfttime}/bin/sfttime"
install -D script $out/bin/display-infos
''
|
