File: gbm.sh
   1 #!/bin/sh
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright © 2020-2025 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...] [bad...] [meh...]
  27 #
  28 # Good, Bad, Meh colors lines using up to 3 regular expressions, keeping all
  29 # other input lines verbatim.
  30 
  31 
  32 # handle leading options
  33 # case "$1" in
  34 #     -h|--h|-help|--help)
  35 #         awk '/^# +gbm /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  36 #         exit 0
  37 #     ;;
  38 # esac
  39 
  40 good="$1"
  41 bad="$2"
  42 meh="$3"
  43 [ $# -gt 0 ] && shift
  44 [ $# -gt 0 ] && shift
  45 [ $# -gt 0 ] && shift
  46 
  47 awk '
  48 BEGIN {
  49     gotgood = ARGC > 1 && ARGV[1] != ""
  50     gotbad = ARGC > 2 && ARGV[2] != ""
  51     gotmeh = ARGC > 3 && ARGV[3] != ""
  52     good = ARGV[1]
  53     bad = ARGV[2]
  54     meh = ARGV[3]
  55     delete ARGV[1]
  56     delete ARGV[2]
  57     delete ARGV[3]
  58 }
  59 
  60 gotgood && $0 ~ good {
  61     # code to use a color-blind-friendlier blue, instead of green
  62     # gsub(/\x1b\[0m/, "\x1b[0m\x1b[38;2;0;95;215m")
  63     # printf "\x1b[38;2;0;95;215m%s\x1b[0m\n", $0
  64     gsub(/\x1b\[0m/, "\x1b[0m\x1b[38;2;0;135;95m")
  65     printf "\x1b[38;2;0;135;95m%s\x1b[0m\n", $0; fflush()
  66     next
  67 }
  68 
  69 gotbad && $0 ~ bad {
  70     gsub(/\x1b\[0m/, "\x1b[0m\x1b[38;2;204;0;0m")
  71     printf "\x1b[38;2;204;0;0m%s\x1b[0m\n", $0; fflush()
  72     next
  73 }
  74 
  75 gotmeh && $0 ~ meh {
  76     gsub(/\x1b\[0m/, "\x1b[0m\x1b[38;2;168;168;168m")
  77     printf "\x1b[38;2;168;168;168m%s\x1b[0m\n", $0; fflush()
  78     next
  79 }
  80 
  81 { print; fflush() }
  82 ' "${good}" "${bad}" "${meh}" "$@"