nixos-config/pkgs/q/default.nix
2019-12-27 23:17:31 +13:00

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{ pkgs, lib
# tzselect is your frind do find timezones
, timeZones ? [ ], timeColor ? 9, timeZoneColor ? 10, calBackgroundColor ? 10
, calWeekColor ? 13, calDayColor ? 9, enableIntelBacklight ? true
, enableBattery ? true, ... }:
let
hrule = ''
hrule_cols=$(${pkgs.ncurses}/bin/tput cols)
hrule_index=0
while [ $hrule_index -lt $hrule_cols ]
do
echo -n ''
hrule_index=$(( 1 + $hrule_index ))
done
echo
'';
q-cal = let
# Maximum width of cal's output.
calwidth = 23;
# Number of space characters between two calendars.
hspace = 2;
# Return number of columns required to print n calenders side by side.
need_width = n: assert n >= 1; n * calwidth + (n - 1) * hspace;
lpad = n: c: s: if lib.stringLength s < n then lpad n c (c + s) else s;
pad = ''
{
${pkgs.gnused}/bin/sed '
# rtrim
s/ *$//
# delete last empty line
''${/^$/d}
' \
| ${pkgs.gawk}/bin/awk '{printf "%-${
toString calwidth
}s\n", $0}' \
| ${pkgs.gnused}/bin/sed "
# colorize header
1,2s/.*/[38;5;${toString calBackgroundColor}m&/
# highlight current week
s/^$(${pkgs.coreutils}/bin/date +%W)/[38;5;${
toString calWeekColor
}m&/
# colorize week number
s/^[ 1-9][0-9]/[38;5;${
toString calBackgroundColor
}m&/
"
}'';
in ''
cols=$(${pkgs.ncurses}/bin/tput cols)
${pkgs.coreutils}/bin/paste \
<(if test $cols -ge ${toString (need_width 3)}; then
${pkgs.utillinux}/bin/cal -mw \
$(${pkgs.coreutils}/bin/date +'%m %Y' -d 'last month') \
| ${pad}
fi) \
<(if test $cols -ge ${toString (need_width 1)}; then
${pkgs.utillinux}/bin/cal -mw \
| ${pkgs.gnused}/bin/sed '
# colorize day of month
s/\(^\| \)'"$(${pkgs.coreutils}/bin/date +%e)"'\>/[38;5;${
toString calDayColor
}m&/
' \
| ${pad}
fi) \
<(if test $cols -ge ${toString (need_width 2)}; then
${pkgs.utillinux}/bin/cal -mw \
$(${pkgs.coreutils}/bin/date +'%m %Y' -d 'next month') \
| ${pad}
fi) \
| ${pkgs.gnused}/bin/sed '
s/^\t//
s/\t$//
s/\t/${lpad hspace " " ""}/g
'
'';
q-timeZoneDate = zone:
let
dateString = comment:
"'+%Y-%m-%dT[;38;5;${
toString timeColor
}m%H:%M:%S[;38;5;${toString timeZoneColor}m%:z ${comment}' ";
timeZoneVariable = lib.optionalString (zone != null) "TZ=${zone}";
comment = lib.optionalString (zone != null) " : ${zone}";
# sh
in ''
${timeZoneVariable} ${pkgs.coreutils}/bin/date ${dateString comment}
'';
q-timeZoneDates = if timeZones == [ ] then
q-timeZoneDate null
else
lib.concatMapStringsSep "\n" q-timeZoneDate timeZones;
q-gitdir = ''
if test -d .git; then
#git status --porcelain
branch=$(
${pkgs.git}/bin/git branch \
| ${pkgs.gnused}/bin/sed -rn 's/^\* (.*)/\1/p'
)
echo "± $LOGNAME@''${HOSTNAME-$(${pkgs.nettools}/bin/hostname)}:$PWD .git $branch"
fi
'';
q-intel_backlight = ''
cd /sys/class/backlight/intel_backlight
</dev/null exec ${pkgs.gawk}/bin/awk '
END {
getline actual_brightness < "actual_brightness"
getline max_brightness < "max_brightness"
getline brightness < "brightness"
printf "%20s %d%% %d/%d\n" \
, "intel_backlight" \
, actual_brightness / max_brightness * 100 \
, actual_brightness \
, max_brightness
}
'
'';
q-power_supply = let
power_supply = pkgs.writers.writeBash "power_supply" ''
set -efu
uevent=$1
eval "$(${pkgs.gnused}/bin/sed -n '
s/^\([A-Z_]\+=[0-9A-Za-z_-]*\)$/export \1/p
' $uevent)"
case $POWER_SUPPLY_NAME in
AC)
exit # not battery
;;
esac
exec </dev/null
exec ${pkgs.gawk}/bin/awk '
function die(s) {
printf "%20s %s\n", name, s
exit 1
}
function print_hm(h, m) {
m = (h - int(h)) * 60
return sprintf("%dh%dm", h, m)
}
function print_bar(bar_size, charge, full_bars, empty_bars, full_color) {
full_bars = int(charge * bar_size)
empty_bars = bar_size - full_bars
if (charge >= .42) full_color = "2"
else if (charge >= .23) full_color = "3"
else full_color = "1"
left_arrow = 1
middle_arrow = 1
right_arrow = 1
if (full_bars == 0) {
left_arrow = 0
middle_arrow = 0
}
if (empty_bars == 0) {
middle_arrow = 0
right_arrow = 0
}
empty_color = "0";
return sgr("38;5;" 8) sgr("48;5;" full_color) strdup("",left_arrow) strdup(" ", full_bars) sgr("48;5;" empty_color) sgr("38;5;" full_color) strdup("",middle_arrow) strdup(" ", empty_bars) sgr() sgr("38;5;" empty_color) strdup("",right_arrow) sgr()
}
function sgr(p) {
return "\x1b[" p "m"
}
function strdup(s,n,t) {
t = sprintf("%"n"s","")
gsub(/ /,s,t)
return t
}
END {
name = ENVIRON["POWER_SUPPLY_NAME"]
charge_unit = "Ah"
charge_now = ENVIRON["POWER_SUPPLY_CHARGE_NOW"] / 10^6
charge_full = ENVIRON["POWER_SUPPLY_CHARGE_FULL"] / 10^6
current_unit = "A"
current_now = ENVIRON["POWER_SUPPLY_CURRENT_NOW"] / 10^6
energy_unit = "Wh"
energy_now = ENVIRON["POWER_SUPPLY_ENERGY_NOW"] / 10^6
energy_full = ENVIRON["POWER_SUPPLY_ENERGY_FULL"] / 10^6
power_unit = "W"
power_now = ENVIRON["POWER_SUPPLY_POWER_NOW"] / 10^6
voltage_unit = "V"
voltage_now = ENVIRON["POWER_SUPPLY_VOLTAGE_NOW"] / 10^6
voltage_min_design = ENVIRON["POWER_SUPPLY_VOLTAGE_MIN_DESIGN"] / 10^6
#printf "charge_now: %s\n", charge_now
#printf "charge_full: %s\n", charge_full
#printf "current_now: %s\n", current_now
#printf "energy_now: %s\n", energy_now
#printf "energy_full: %s\n", energy_full
#printf "energy_full: %s\n", ENVIRON["POWER_SUPPLY_ENERGY_FULL"]
#printf "energy_full: %s\n", ENVIRON["POWER_SUPPLY_ENERGY_FULL"] / 10^6
#printf "power_now: %s\n", power_now
#printf "voltage_now: %s\n", voltage_now
if (current_now == 0 && voltage_now != 0) {
current_now = power_now / voltage_now
}
if (power_now == 0) {
power_now = current_now * voltage_now
}
if (charge_now == 0 && voltage_min_design != 0) {
charge_now = energy_now / voltage_min_design
}
if (energy_now == 0) {
energy_now = charge_now * voltage_min_design
}
if (charge_full == 0 && voltage_min_design != 0) {
charge_full = energy_full / voltage_min_design
}
if (energy_full == 0) {
energy_full = charge_full * voltage_min_design
}
if (charge_now == 0 || charge_full == 0) {
die("unknown charge")
}
charge_ratio = charge_now / charge_full
out = out sprintf("%20s ", name)
out = out sprintf(" %s", print_bar(10, charge_ratio))
out = out sprintf(" %d%", charge_ratio * 100)
out = out sprintf(" %.2f%s", charge_now, charge_unit)
if (current_now != 0) {
out = out sprintf("/%.1f%s", current_now, current_unit)
}
out = out sprintf(" %d%s", energy_full, energy_unit)
if (power_now != 0) {
out = out sprintf("/%.1f%s", power_now, power_unit)
}
if (current_now != 0) {
out = out sprintf(" %s", print_hm(charge_now / current_now))
}
print out
}
'
'';
in ''
for uevent in /sys/class/power_supply/*/uevent; do
${power_supply} "$uevent" || :
done
'';
q-virtualization = ''
printf '%20s %s\n' "VT" \
$(${pkgs.systemd}/bin/systemd-detect-virt)
'';
q-wireless = ''
for dev in $(
${pkgs.iw}/bin/iw dev \
| ${pkgs.gnused}/bin/sed -n 's/^\s*Interface\s\+\([0-9a-z]\+\)$/\1/p'
); do
inet=$(${pkgs.iproute}/bin/ip addr show $dev \
| ${pkgs.gnused}/bin/sed -n '
s/.*inet \([0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+\).*/\1/p
') \
|| unset inet
ssid=$(${pkgs.iw}/bin/iw dev $dev link \
| ${pkgs.gnused}/bin/sed -n '
s/.*\tSSID: \(.*\)/\1/p
') \
|| unset ssid
printf '%20s %s %s\n' $dev ''${inet+ $inet} ''${ssid+ $ssid}
done
'';
q-online = ''
if ${pkgs.curl}/bin/curl -s google.com >/dev/null; then
echo ' status online'
else
echo ' status offline '
fi
'';
q-thermal_zone = ''
for i in /sys/class/thermal/thermal_zone*; do
type=$(${pkgs.coreutils}/bin/cat $i/type)
temp=$(${pkgs.coreutils}/bin/cat $i/temp)
printf '%20s %s°C\n' $type $(echo $temp / 1000 | ${pkgs.bc}/bin/bc)
done
'';
q-task-checklist = ''
${pkgs.taskwarrior}/bin/task export +checklist status:pending | \
${pkgs.jq}/bin/jq \
--raw-output '
sort_by(.description) | reverse |
.[] |
"[ \( .id ) ] \( .description )"
'
'';
q-task-active = ''
${pkgs.taskwarrior}/bin/task export +ACTIVE status:pending | ${pkgs.jq}/bin/jq --raw-output '.[] | " \(.id) \(.description)"'
'';
# bash needed for <(...)
in pkgs.writers.writeBashBin "q" ''
set -eu
export PATH=/var/empty
${hrule}
${q-cal}
${hrule}
${q-timeZoneDates}
${hrule}
${lib.optionalString enableIntelBacklight "(${q-intel_backlight}) &"}
${lib.optionalString enableBattery "(${q-power_supply}) &"}
(${q-virtualization}) &
(${q-wireless}) &
(${q-online}) &
(${q-thermal_zone}) & wait
${hrule}
${q-task-active}
${hrule}
${q-task-checklist}
${hrule}
''