File: gbm.sh
   1 #!/bin/sh
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright © 2024 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 # gbm [good condition...] [bad condition...] [meh condition...]
  27 #
  28 # Good, Bad, Meh colors lines using 1..3 awk conditions, keeping all other
  29 # input lines verbatim.
  30 
  31 
  32 # handle leading options
  33 case "$1" in
  34     -h|--h|-help|--help)
  35         # show help message, extracting the info-comment at the start
  36         # of this file, and quit
  37         awk '/^# +gbm/, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  38         exit 0
  39     ;;
  40 esac
  41 
  42 good="${1:-0}"
  43 shift
  44 bad="${1:-0}"
  45 shift
  46 meh="${1:-0}"
  47 shift
  48 
  49 awk "
  50     ${good} {
  51         gsub(/\\x1b\\[0m/, \"\x1b[0m\\x1b[38;5;29m\")
  52         printf \"\\x1b[38;5;29m%s\x1b[0m\\n\", \$0
  53         fflush()
  54         next
  55     }
  56 
  57     ${bad} {
  58         gsub(/\\x1b\\[0m/, \"\x1b[0m\\x1b[38;5;1m\")
  59         printf \"\\x1b[38;5;1m%s\x1b[0m\\n\", \$0
  60         fflush()
  61         next
  62     }
  63 
  64     ${meh} {
  65         gsub(/\\x1b\\[0m/, \"\x1b[0m\\x1b[38;5;249m\")
  66         printf \"\\x1b[38;5;249m%s\x1b[0m\\n\", \$0
  67         fflush()
  68         next
  69     }
  70 
  71     {
  72         print
  73         fflush()
  74     }
  75 " "$@"