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+#!/bin/bash
+# pacdiff : a simple pacnew/pacorig/pacsave updater
+#
+# Copyright (c) 2007 Aaron Griffin <aaronmgriffin@gmail.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+diffprog=${DIFFPROG:-vimdiff}
+diffsearchpath=${DIFFSEARCHPATH:-/etc}
+locate=0
+
+usage() {
+ echo "pacdiff : a simple pacnew/pacorig/pacsave updater"
+ echo "Usage : pacdiff [-l]"
+ echo " -l/--locate makes pacdiff use locate rather than find"
+ echo " DIFFPROG variable allows to override the default vimdiff"
+ echo " DIFFSEARCHPATH allows to override the default /etc path"
+ echo "Example : DIFFPROG=meld DIFFSEARCHPATH=\"/boot /etc /usr\" pacdiff"
+}
+
+cmd() {
+ if [ $locate -eq 1 ]; then
+ locate -0 -e -b \*.pacnew \*.pacorig \*.pacsave
+ else
+ find $diffsearchpath \( -name \*.pacnew -o -name \*.pacorig -o -name \*.pacsave \) -print0
+ fi
+}
+
+if [ $# -gt 0 ]; then
+ case $1 in
+ -l|--locate)
+ locate=1;;
+ *)
+ usage; exit 0;;
+ esac
+fi
+
+# see http://mywiki.wooledge.org/BashFAQ/020
+while IFS= read -u 3 -r -d '' pacfile; do
+ file="${pacfile%.pac*}"
+ echo "File: $file"
+ if [ ! -f "$file" ]; then
+ echo " $file does not exist"
+ rm -i "$pacfile"
+ continue
+ fi
+ check="$(cmp "$pacfile" "$file")"
+ if [ -z "${check}" ]; then
+ echo " Files are identical, removing..."
+ rm "$pacfile"
+ else
+ echo -n " File differences found. (V)iew, (S)kip, (R)emove: [v/s/r] "
+ while read c; do
+ case $c in
+ r|R) rm "$pacfile"; break ;;
+ v|V)
+ $diffprog "$pacfile" "$file"
+ rm -i "$pacfile"; break ;;
+ s|S) break ;;
+ *) echo -n " Invalid answer. Try again: [v/s/r] "; continue ;;
+ esac
+ done
+ fi
+done 3< <(cmd)
+
+exit 0
+
+# vim: set ts=2 sw=2 noet: