File: verdict.sh
   1 #!/bin/sh
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright (c) 2026 pacman64
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining a copy
   8 # of this software and associated documentation files (the "Software"), to deal
   9 # in the Software without restriction, including without limitation the rights
  10 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 # copies of the Software, and to permit persons to whom the Software is
  12 # furnished to do so, subject to the following conditions:
  13 #
  14 # The above copyright notice and this permission notice shall be included in
  15 # all copies or substantial portions of the Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23 # SOFTWARE.
  24 
  25 
  26 # verdict [command...] [arguments...]
  27 #
  28 # Run the command given, colorfully showing its exit code on failure. On
  29 # success, the exit code is 0, but it's not shown explicitly.
  30 #
  31 # A colorblind-friendly blue is used instead of green if either environment
  32 # variable COLORBLIND or COLOR_BLIND is declared and set to 1.
  33 #
  34 # When variable NO_COLOR is declared and set to 1, an invert/highlight style
  35 # is used instead of colors, no matter the exit code of the command given.
  36 
  37 
  38 case "$1" in
  39     -h|--h|-help|--help)
  40         awk '/^# +verdict /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  41         exit 0
  42     ;;
  43 esac
  44 
  45 [ "$1" = '--' ] && shift
  46 
  47 if [ -z "$1" ]; then
  48     awk '/^# +verdict /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  49     exit 0
  50 fi
  51 
  52 # handle INT signals, which usually happen by pressing Ctrl+C
  53 if [ "${NO_COLOR}" = 1 ]; then
  54     trap "printf \"\\n%s \\e[7m failed with error code 130 \\e[0m\\n\" \"$*\" > /dev/stderr; exit 130" INT
  55 else
  56     trap "printf \"\\n\\e[38;2;204;0;0m%s \\e[48;2;204;0;0m\\e[38;2;255;255;255m failed with error code 130 \\e[0m\\n\" \"$*\" > /dev/stderr; exit 130" INT
  57 fi
  58 
  59 "$@"
  60 code=$?
  61 
  62 if [ "${code}" = 0 ]; then
  63     if [ "${NO_COLOR}" = 1 ]; then
  64         printf "\n%s \e[7m succeeded \e[0m\n" "$*"
  65     elif [ "${COLORBLIND}" = 1 ] || [ "${COLOR_BLIND}" = 1 ]; then
  66         # color-blind-friendly version using a blue `success` message
  67         printf "\n\e[38;2;0;95;215m%s \e[48;2;0;95;215m\e[38;2;255;255;255m succeeded \e[0m\n" "$*"
  68     else
  69         printf "\n\e[38;2;0;135;95m%s \e[48;2;0;135;95m\e[38;2;255;255;255m succeeded \e[0m\n" "$*"
  70     fi
  71 else
  72     if [ "${NO_COLOR}" = 1 ]; then
  73         printf "\n%s \e[7m failed with error code %d \e[0m\n" "$*" "${code}"
  74     else
  75         printf "\n\e[38;2;204;0;0m%s \e[48;2;204;0;0m\e[38;2;255;255;255m failed with error code %d \e[0m\n" "$*" "${code}"
  76     fi
  77 fi > /dev/stderr
  78 
  79 exit "${code}"