1 files changed, 176 insertions, 0 deletions
diff --git a/pkgs/simple/q/default.nix b/pkgs/simple/q/default.nix
new file mode 100644
index 0000000..03e924e
--- /dev/null
+++ b/pkgs/simple/q/default.nix
@@ -0,0 +1,176 @@
+{ lib
+, pkgs
+}:
+let
+  mylib = import ../../../lib/pure.nix {
+    inherit lib;
+  };
+
+  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])(( ..| \[7m..\[27m){7})/[38;5;243m\1[m\3/g
+      # dim month and day names
+      s/^ *[A-Z].*/[38;5;243m&[m/
+      # highlight current date
+      s/\[7m/[38;5;009;1m/
+      s/\[27m/[m/
+    '
+  '';
+
+  q-isodate = TZ: color: /* sh */ ''
+    TZ=${mylib.shell.escape TZ} \
+    ${pkgs.coreutils}/bin/date \
+        '+[m%Y-%m-%d[38;5;243mT[;'${mylib.shell.escape color}'m%H:%M[38;5;243m:[m%S%:z'
+  '';
+
+  q-deudate = q-isodate "Europe/Berlin" "38;5;085";
+
+  # Singapore's red is #ED2E38
+  q-sgtdate = q-isodate "Asia/Singapore" "38;2;237;46;56";
+
+  q-thadate = q-isodate "Asia/Bangkok" "38;5;226";
+
+  q-utcdate = q-isodate "UTC" "38;5;065";
+
+  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-net = /* sh */ ''
+    for dev in $(
+      ${pkgs.iproute}/bin/ip a |
+      ${pkgs.gnused}/bin/sed -rn 's/^[0-9]+: ([^:]+):.*/\1/p' |
+      ${pkgs.gnugrep}/bin/grep -Ev '^(lo|retiolum|wiregrill)$'
+      # TODO wiregrill ping ni.w, retiolum ping ni.r
+    ); 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
+            ')
+        ssid=$(${pkgs.iw}/bin/iw dev $dev link \
+          | ${pkgs.gnused}/bin/sed -n '
+              s/.*\tSSID: \(.*\)/\1/p
+            ')
+        latency=$(
+          /run/wrappers/bin/ping -W .25 -c 1 -I "$dev" ni.i 2>&1 |
+          ${pkgs.gnused}/bin/sed -rn '
+            s/.*time=([0-9.]+).*/online ni=[38;5;085m\1[m/p
+            s/.*Network is unreachable.*/offline/p
+            s/.*100% packet loss.*/offline/p
+          '
+        )
+        echo "$dev''${inet:+ $inet}''${ssid:+ $ssid} $latency"
+      } &
+    done
+    wait
+  '';
+
+  q-thermal_zone = /* sh */ ''
+    for i in /sys/class/thermal/thermal_zone*; do
+      type=$(${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-deudate}
+  ${q-sgtdate}
+  (${q-gitdir}) &
+  (${q-intel_backlight}) &
+  ${pkgs.q-power_supply}/bin/q-power_supply &
+  (${q-virtualization}) &
+  (${q-net}) &
+  (${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}) || :
+''