stockholm/tv/5pkgs/simple/q/default.nix
2023-01-29 13:11:55 +01:00

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Nix
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with import ./lib;
{ pkgs }:
let
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;
in /* sh */ ''
cols=$(${pkgs.ncurses}/bin/tput cols)
if test $cols -ge ${toString (need_width 3)}; then
${pkgs.utillinux}/bin/cal --color=always -mw3
elif test $cols -ge ${toString (need_width 2)}; then
${pkgs.utillinux}/bin/cal --color=always -mw -n 2
elif test $cols -ge ${toString (need_width 1)}; then
${pkgs.utillinux}/bin/cal --color=always -mw1
else
:
fi |
${pkgs.gnused}/bin/sed -r '
# dim week numbers
s/((^ *| )[ 1-5][0-9]( *)?)(([ 1-3][0-9])*)/\1\4/g
# dim month and day names
s/^ *[A-Z].*/&/
# highlight current date
s/\[7m//
s/\[27m//
'
'';
q-isodate = /* sh */ ''
${pkgs.coreutils}/bin/date \
'+%Y-%m-%dT%H:%M:%S%:z'
'';
# Singapore's red is #ED2E38
q-sgtdate = /* sh */ ''
TZ=Asia/Singapore \
${pkgs.coreutils}/bin/date \
'+%Y-%m-%dT%H:%M:%S%:z'
'';
q-utcdate = /* sh */ ''
${pkgs.coreutils}/bin/date -u \
'+%Y-%m-%dT%H:%M:%S%:z'
'';
q-gitdir = /* sh */ ''
if test -d .git; then
#git status --porcelain
branch=$(
${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 = /* sh */ ''
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 "intel_backlight %d%% %d/%d\n" \
, actual_brightness / max_brightness * 100 \
, actual_brightness \
, max_brightness
}
'
'';
q-virtualization = /* sh */ ''
echo "VT: $(${pkgs.systemd}/bin/systemd-detect-virt)"
'';
q-wireless = /* sh */ ''
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
echo "$dev''${inet+ $inet}''${ssid+ $ssid}"
done
'';
q-online = /* sh */ ''
if ${pkgs.curl}/bin/curl -s google.com >/dev/null; then
echo 'online'
else
echo offline
fi
'';
q-thermal_zone = /* sh */ ''
for i in /sys/class/thermal/thermal_zone*; do
type=$(${pkgs.coreutils}/bin/cat $i/type)
temp=$(${pkgs.coreutils}/bin/cat $i/temp)
printf '%s %s°C\n' $type $(echo $temp / 1000 | ${pkgs.bc}/bin/bc)
done
'';
q-todo = /* sh */ ''
TODO_file=$PWD/TODO
if test -e "$TODO_file"; then
${pkgs.jq}/bin/jq -Rrs <"$TODO_file" -f ${pkgs.writeJq "q-todo.jq" ''
split("\n") | map(
(match("^([0-9]+-\\d{2}-\\d{2})\\s+(.*)$").captures | map(.string))
as $captures |
($captures[0] | strptime("%Y-%m-%d") | mktime) as $date |
$captures[1] as $text |
select(now >= $date) |
($text | test("\\[URGENT]"; "i")) as $urgent |
(if $urgent then "38;5;196" else "38;5;208" end) as $sgr |
if $urgent then sub("\\s*\\[URGENT]\\s*"; " "; "i") else . end |
"\u001b[\($sgr)m\(.)\u001b[m"
) |
if length == 0 then "nothing to remind" else .[] end
''}
else
echo "$TODO_file: no such file or directory"
fi
'';
in
# bash needed for <(...)
pkgs.writeBashBin "q" ''
set -eu
export PATH=/var/empty
${q-cal}
${q-utcdate}
${q-isodate}
${q-sgtdate}
(${q-gitdir}) &
(${q-intel_backlight}) &
${pkgs.q-power_supply}/bin/q-power_supply &
(${q-virtualization}) &
(${q-wireless}) &
(${q-online}) &
(${q-thermal_zone}) &
wait
if test "$PWD" != "$HOME" && test -e "$HOME/TODO"; then
TODO_home_entries=$(cd; (${q-todo}) | ${pkgs.coreutils}/bin/wc -l)
if test "$TODO_home_entries" = 1; then
TODO_format='There is %d entry in ~/TODO'
else
TODO_format='There are %d entries in ~/TODO'
fi
printf "\x1b[38;5;238m$TODO_format\x1b[m\n" "$TODO_home_entries"
fi
(${q-todo}) || :
''