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-#!/bin/bash
-# pacdiff : a simple pacnew/pacsave updater
-#
-# Copyright (c) 2007 Aaron Griffin <aaronmgriffin@gmail.com>
-# Copyright (c) 2013-2016 Pacman Development Team <pacman-dev@archlinux.org>
-#
-# 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/>.
-#
-
-shopt -s extglob
-
-declare -r myname='pacdiff'
-declare -r myver='@PACKAGE_VERSION@'
-
-diffprog=${DIFFPROG:-'vim -d'}
-diffsearchpath=${DIFFSEARCHPATH:-/etc}
-USE_COLOR='y'
-declare -a oldsaves
-declare -i USE_FIND=0 USE_LOCATE=0 USE_PACDB=0 OUTPUTONLY=0
-
-m4_include(../scripts/library/output_format.sh)
-
-usage() {
- cat <<EOF
-${myname} (pacman) v${myver}
-
-A simple program to merge or remove pacnew/pacsave files.
-
-Usage: $myname [-l | -f | -p] [--nocolor]
-
-Search Options: select one (default: --pacmandb)
- -l/--locate scan using locate
- -f/--find scan using find
- -p/--pacmandb scan active config files from pacman database
-
-General Options:
- -o/--output print files instead of merging them
- --nocolor remove colors from output
-
-Environment Variables:
- DIFFPROG override the merge program: (default: 'vim -d')
- DIFFSEARCHPATH override the search path. (only when using find)
- (default: /etc)
-
-Example: DIFFPROG=meld DIFFSEARCHPATH="/boot /etc /usr" $myname
-Example: $myname --output --locate
-
-EOF
-}
-
-version() {
- printf "%s %s\n" "$myname" "$myver"
- echo 'Copyright (C) 2007 Aaron Griffin <aaronmgriffin@gmail.com>'
- echo 'Copyright (C) 2013-2016 Pacman Development Team <pacman-dev@archlinux.org>'
-}
-
-print_existing() {
- [[ -f "$1" ]] && printf '%s\0' "$1"
-}
-
-print_existing_pacsave(){
- for f in "${1}"?(.+([0-9])); do
- [[ -f $f ]] && printf '%s\0' "$f"
- done
-}
-
-cmd() {
- if (( USE_LOCATE )); then
- locate -0 -e -b \*.pacnew \*.pacorig \*.pacsave '*.pacsave.[0-9]*'
- elif (( USE_FIND )); then
- find $diffsearchpath \( -name \*.pacnew -o -name \*.pacorig -o -name \*.pacsave -o -name '*.pacsave.[0-9]*' \) -print0
- elif (( USE_PACDB )); then
- awk '/^%BACKUP%$/ {
- while (getline) {
- if (/^$/) { nextfile }
- print $1
- }
- }' "${pac_db}"/*/files | while read -r bkup; do
- print_existing "/$bkup.pacnew"
- print_existing "/$bkup.pacorig"
- print_existing_pacsave "/$bkup.pacsave"
- done
- fi
-}
-
-while [[ -n "$1" ]]; do
- case "$1" in
- -l|--locate)
- USE_LOCATE=1;;
- -f|--find)
- USE_FIND=1;;
- -p|--pacmandb)
- USE_PACDB=1;;
- -o|--output)
- OUTPUTONLY=1;;
- --nocolor)
- USE_COLOR='n';;
- -V|--version)
- version; exit 0;;
- -h|--help)
- usage; exit 0;;
- *)
- usage; exit 1;;
- esac
- shift
-done
-
-m4_include(../scripts/library/term_colors.sh)
-
-if ! type -p ${diffprog%% *} >/dev/null && (( ! OUTPUTONLY )); then
- error "Cannot find the $diffprog binary required for viewing differences."
- exit 1
-fi
-
-case $(( USE_FIND + USE_LOCATE + USE_PACDB )) in
- 0) USE_PACDB=1;; # set the default search option
- [^1]) error "Only one search option may be used at a time"
- usage; exit 1;;
-esac
-
-if (( USE_PACDB )); then
- if [[ ! -r @sysconfdir@/pacman.conf ]]; then
- error "unable to read @sysconfdir@/pacman.conf"
- usage; exit 1
- fi
-
- eval $(awk '/DBPath/ {print $1$2$3}' @sysconfdir@/pacman.conf)
- pac_db="${DBPath:-@localstatedir@/lib/pacman/}local"
- if [[ ! -d "${pac_db}" ]]; then
- error "unable to read pacman database %s". "${pac_db}"
- usage; exit 1
- fi
-fi
-
-# see http://mywiki.wooledge.org/BashFAQ/020
-while IFS= read -u 3 -r -d '' pacfile; do
- file="${pacfile%.pac*}"
- file_type="pac${pacfile##*.pac}"
-
- if (( OUTPUTONLY )); then
- echo "$pacfile"
- continue
- fi
-
- # add matches for pacsave.N to oldsaves array, do not prompt
- if [[ $file_type = pacsave.+([0-9]) ]]; then
- oldsaves+=("$pacfile")
- continue
- fi
-
- msg "%s file found for %s" "$file_type" "$file"
- if [ ! -f "$file" ]; then
- warning "$file does not exist"
- rm -iv "$pacfile"
- continue
- fi
-
- if cmp -s "$pacfile" "$file"; then
- msg2 "Files are identical, removing..."
- rm -v "$pacfile"
- else
- ask "(V)iew, (S)kip, (R)emove %s, (O)verwrite with %s, (Q)uit: [v/s/r/o/q] " "$file_type" "$file_type"
- while read c; do
- case $c in
- q|Q) exit 0;;
- r|R) rm -v "$pacfile"; break ;;
- o|O) mv -v "$pacfile" "$file"; break ;;
- v|V)
- $diffprog "$pacfile" "$file"
- ask "(V)iew, (S)kip, (R)emove %s, (O)verwrite with %s, (Q)uit: [v/s/r/o/q] " "$file_type" "$file_type";
- continue ;;
- s|S) break ;;
- *) ask "Invalid answer. Try again: [v/s/r/o/q] "; continue ;;
- esac
- done
- fi
-done 3< <(cmd)
-
-(( ${#oldsaves[@]} )) && warning "Ignoring %s" "${oldsaves[@]}"
-
-exit 0
-
-# vim: set noet: