Filter.sh

   1 #!/usr/bin/env bash
   2
   3 # Cycript - Optimizing JavaScript Compiler/Runtime
   4 # Copyright (C) 2009-2015  Jay Freeman (saurik)
   5
   6 # GNU Affero General Public License, Version 3 {{{
   7 #
   8 # This program is free software: you can redistribute it and/or modify
   9 # it under the terms of the GNU Affero General Public License as published by
  10 # the Free Software Foundation, either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU Affero General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU Affero General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 # }}}
  21
  22 filters=("$@")
  23
  24 while IFS= read -r line; do
  25     if [[ ${line} = @if* ]]; then
  26         line=${line#@if }
  27         for name in "${filters[@]}"; do
  28             if [[ ${line} = ${name}' '* ]]; then
  29                 echo "${line#${name} }"
  30             fi
  31         done
  32     elif [[ ${line} = @begin* ]]; then
  33         set ${line}; shift
  34         filter=
  35         for name in "${filters[@]}"; do
  36             for side in "$@"; do
  37                 if [[ ${name} == ${side} ]]; then
  38                     unset filter
  39                 fi
  40             done
  41         done
  42     elif [[ ${line} = @end ]]; then
  43         unset filter
  44     elif [[ -z ${filter+@} ]]; then
  45         echo "${line}"
  46     fi
  47 done