contrib/pacdiff.in

   1 #!/bin/bash
   2 #   pacdiff : a simple pacnew/pacorig/pacsave updater
   3 #
   4 #   Copyright (c) 2007 Aaron Griffin <aaronmgriffin@gmail.com>
   5 #
   6 #   This program is free software; you can redistribute it and/or modify
   7 #   it under the terms of the GNU General Public License as published by
   8 #   the Free Software Foundation; either version 2 of the License, or
   9 #   (at your option) any later version.
  10 #
  11 #   This program is distributed in the hope that it will be useful,
  12 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 #   GNU General Public License for more details.
  15 #
  16 #   You should have received a copy of the GNU General Public License
  17 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19
  20 diffprog=${DIFFPROG:-vimdiff}
  21 diffsearchpath=${DIFFSEARCHPATH:-/etc}
  22 locate=0
  23
  24 usage() {
  25         echo "pacdiff : a simple pacnew/pacorig/pacsave updater"
  26         echo "Usage : pacdiff [-l]"
  27         echo "  -l/--locate makes pacdiff use locate rather than find"
  28         echo "  DIFFPROG variable allows to override the default vimdiff"
  29         echo "  DIFFSEARCHPATH allows to override the default /etc path"
  30         echo "Example : DIFFPROG=meld DIFFSEARCHPATH=\"/boot /etc /usr\" pacdiff"
  31 }
  32
  33 cmd() {
  34         if [ $locate -eq 1 ]; then
  35                 locate -0 -e -b \*.pacnew \*.pacorig \*.pacsave
  36         else
  37                 find $diffsearchpath \( -name \*.pacnew -o -name \*.pacorig -o -name \*.pacsave \) -print0
  38         fi
  39 }
  40
  41 if [ $# -gt 0 ]; then
  42         case $1 in
  43                 -l|--locate)
  44                 locate=1;;
  45                 *)
  46                 usage; exit 0;;
  47         esac
  48 fi
  49
  50 # see http://mywiki.wooledge.org/BashFAQ/020
  51 while IFS= read -u 3 -r -d '' pacfile; do
  52         file="${pacfile%.pac*}"
  53         echo "File: $file"
  54         if [ ! -f "$file" ]; then
  55                 echo "  $file does not exist"
  56                 rm -i "$pacfile"
  57                 continue
  58         fi
  59         check="$(cmp "$pacfile" "$file")"
  60         if [ -z "${check}" ]; then
  61                 echo "  Files are identical, removing..."
  62                 rm "$pacfile"
  63         else
  64                 echo -n "  File differences found. (V)iew, (S)kip, (R)emove: [v/s/r] "
  65                 while read c; do
  66                         case $c in
  67                                 r|R) rm "$pacfile"; break ;;
  68                                 v|V)
  69                                 $diffprog "$pacfile" "$file"
  70                                 rm -i "$pacfile"; break ;;
  71                                 s|S) break ;;
  72                                 *) echo -n "  Invalid answer. Try again: [v/s/r] "; continue ;;
  73                         esac
  74                 done
  75         fi
  76 done 3< <(cmd)
  77
  78 exit 0
  79
  80 # vim: set ts=2 sw=2 noet: