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 declare -r myname='pacdiff'
  21 declare -r myver='@PACKAGE_VERSION@'
  22
  23 diffprog=${DIFFPROG:-vimdiff}
  24 diffsearchpath=${DIFFSEARCHPATH:-/etc}
  25 locate=0
  26
  27 usage() {
  28         echo "$myname : a simple pacnew/pacorig/pacsave updater"
  29         echo "Usage : $myname [-l]"
  30         echo "  -l/--locate makes $myname use locate rather than find"
  31         echo "  DIFFPROG variable allows to override the default vimdiff"
  32         echo "  DIFFSEARCHPATH allows to override the default /etc path"
  33         echo "Example : DIFFPROG=meld DIFFSEARCHPATH=\"/boot /etc /usr\" $myname"
  34 }
  35
  36 version() {
  37         printf "%s %s\n" "$myname" "$myver"
  38         echo 'Copyright (C) 2007 Aaron Griffin <aaronmgriffin@gmail.com>'
  39 }
  40
  41 cmd() {
  42         if [ $locate -eq 1 ]; then
  43                 locate -0 -e -b \*.pacnew \*.pacorig \*.pacsave
  44         else
  45                 find $diffsearchpath \( -name \*.pacnew -o -name \*.pacorig -o -name \*.pacsave \) -print0
  46         fi
  47 }
  48
  49 if [ $# -gt 0 ]; then
  50         case $1 in
  51                 -l|--locate)
  52                 locate=1;;
  53                 -V|--version)
  54                 version; exit 0;;
  55                 -h|--help)
  56                 usage; exit 0;;
  57                 *)
  58                 usage; exit 1;;
  59         esac
  60 fi
  61
  62 # see http://mywiki.wooledge.org/BashFAQ/020
  63 while IFS= read -u 3 -r -d '' pacfile; do
  64         file="${pacfile%.pac*}"
  65         echo "File: $file"
  66         if [ ! -f "$file" ]; then
  67                 echo "  $file does not exist"
  68                 rm -i "$pacfile"
  69                 continue
  70         fi
  71         check="$(cmp "$pacfile" "$file")"
  72         if [ -z "${check}" ]; then
  73                 echo "  Files are identical, removing..."
  74                 rm "$pacfile"
  75         else
  76                 echo -n "  File differences found. (V)iew, (S)kip, (R)emove: [v/s/r] "
  77                 while read c; do
  78                         case $c in
  79                                 r|R) rm "$pacfile"; break ;;
  80                                 v|V)
  81                                 $diffprog "$pacfile" "$file"
  82                                 rm -i "$pacfile"; break ;;
  83                                 s|S) break ;;
  84                                 *) echo -n "  Invalid answer. Try again: [v/s/r] "; continue ;;
  85                         esac
  86                 done
  87         fi
  88 done 3< <(cmd)
  89
  90 exit 0
  91
  92 # vim: set ts=2 sw=2 noet: