add snap-pac-remove

hooks/10_snap-pac-removal.hook

@@ -25,4 +25,4 @@ Target = snap-pac
 Description = NOTE: You are removing snap-pac. No post transaction snapshots will be taken.
 Depends = snap-pac
 When = PreTransaction
-Exec = /usr/bin/true
+Exec = /usr/share/libalpm/script/snap-pac-remove

scripts/snap-pac-remove

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+# snap-pac
+# https://github.com/wesbarnett/snap-pac
+# Copyright (C) 2016 James W. Barnett
+
+# 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, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# Main script.
+
+set -e
+
+SNAPPER_CONFIG_FILE=/etc/conf.d/snapper
+
+ERRORMSG="\033[00;31mERROR:\033[00m"
+WARNINGMSG="\033[00;33mWARNING:\033[00m"
+
+if [[ $EUID -ne 0 ]]; then
+    echo -e "$ERRORMSG Script must be run as root." 
+    exit 1
+fi
+
+if [[ -f "$SNAPPER_CONFIG_FILE" ]]; then
+    source "$SNAPPER_CONFIG_FILE"
+else
+    exit 1
+fi
+
+for CONFIG in $SNAPPER_CONFIGS; do
+
+    prefile="/tmp/snap-pac-pre_$CONFIG"
+    if [[ -f "$prefile" ]]; then
+        rm "$prefile"
+    fi
+
+done
+
+exit 0