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#!/usr/bin/bash
#
# checkupdates: Safely print a list of pending updates.
#
# Copyright (c) 2013 Kyle Keen <keenerd@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/>.
#
declare -r myname='checkupdates'
declare -r myver='1.0.0'
plain() {
(( QUIET )) && return
local mesg=$1; shift
printf "${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&1
}
msg() {
(( QUIET )) && return
local mesg=$1; shift
printf "${GREEN}==>${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&1
}
msg2() {
(( QUIET )) && return
local mesg=$1; shift
printf "${BLUE} ->${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&1
}
ask() {
local mesg=$1; shift
printf "${BLUE}::${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}" "$@" >&1
}
warning() {
local mesg=$1; shift
printf "${YELLOW}==> $(gettext "WARNING:")${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&2
}
error() {
local mesg=$1; shift
printf "${RED}==> $(gettext "ERROR:")${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&2
}
# check if messages are to be printed using color
unset ALL_OFF BOLD BLUE GREEN RED YELLOW
if [[ -t 2 && ! $USE_COLOR = "n" ]]; then
# prefer terminal safe colored and bold text when tput is supported
if tput setaf 0 &>/dev/null; then
ALL_OFF="$(tput sgr0)"
BOLD="$(tput bold)"
BLUE="${BOLD}$(tput setaf 4)"
GREEN="${BOLD}$(tput setaf 2)"
RED="${BOLD}$(tput setaf 1)"
YELLOW="${BOLD}$(tput setaf 3)"
else
ALL_OFF="\e[1;0m"
BOLD="\e[1;1m"
BLUE="${BOLD}\e[1;34m"
GREEN="${BOLD}\e[1;32m"
RED="${BOLD}\e[1;31m"
YELLOW="${BOLD}\e[1;33m"
fi
fi
readonly ALL_OFF BOLD BLUE GREEN RED YELLOW
if (( $# > 0 )); then
echo "${myname} v${myver}"
echo
echo "Safely print a list of pending updates"
echo
echo "Usage: ${myname}"
echo
echo 'Note: Export the "CHECKUPDATES_DB" variable to change the path of the temporary database.'
exit 0
fi
if ! type -P fakeroot >/dev/null; then
error 'Cannot find the fakeroot binary.'
exit 1
fi
if [[ -z $CHECKUPDATES_DB ]]; then
CHECKUPDATES_DB="${TMPDIR:-/tmp}/checkup-db-${USER}/"
fi
trap 'rm -f $CHECKUPDATES_DB/db.lck' INT TERM EXIT
DBPath="$(pacman-conf DBPath)"
if [[ -z "$DBPath" ]] || [[ ! -d "$DBPath" ]]; then
DBPath="/var/lib/pacman/"
fi
mkdir -p "$CHECKUPDATES_DB"
ln -s "${DBPath}/local" "$CHECKUPDATES_DB" &> /dev/null
if ! fakeroot -- pacman -Sy --dbpath "$CHECKUPDATES_DB" --logfile /dev/null &> /dev/null; then
error 'Cannot fetch updates'
exit 1
fi
pacman -Qu --dbpath "$CHECKUPDATES_DB" 2> /dev/null | grep -v '\[.*\]'
exit 0
# vim: set noet:
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