Filter.sh

   1 #!/usr/bin/env bash
   2
   3 filters=("$@")
   4
   5 while IFS= read -r line; do
   6     if [[ ${line} = @if* ]]; then
   7         line=${line#@if }
   8         for name in "${filters[@]}"; do
   9             if [[ ${line} = ${name}' '* ]]; then
  10                 echo "${line#${name} }"
  11             fi
  12         done
  13     elif [[ ${line} = @begin* ]]; then
  14         set ${line}; shift
  15         filter=
  16         for name in "${filters[@]}"; do
  17             for side in "$@"; do
  18                 if [[ ${name} == ${side} ]]; then
  19                     unset filter
  20                 fi
  21             done
  22         done
  23     elif [[ ${line} = @end ]]; then
  24         unset filter
  25     elif [[ -z ${filter+@} ]]; then
  26         echo "${line}"
  27     fi
  28 done