2 files changed, 207 insertions, 1 deletions
diff --git a/src/abslibre-tools/libredbdiff b/src/abslibre-tools/libredbdiff
new file mode 100755
index 0000000..d2d2505
--- /dev/null
+++ b/src/abslibre-tools/libredbdiff
@@ -0,0 +1,206 @@
+#!/usr/bin/env bash
+name="Libredbdiff"
+
+# Copyright (C) 2014 Esteban Carnevale <alfplayer@mailoo.org>
+# Copyright (C) 2014 Luke Shumaker <lukeshu@sbcglobal.net>
+#
+# License: GNU GPLv3+
+#
+# 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 3 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/>.
+
+baseconfpath="/etc/libredbdiff"
+basedbpath="/var/lib/libredbdiff"
+
+conffile="$baseconfpath/pacman.conf.parabola"
+conffilearch="$baseconfpath/pacman.conf.archlinux"
+
+dbpath="$basedbpath/pacman.parabola"
+dbpatharch="$basedbpath/pacman.archlinux"
+
+mirrorlist="$baseconfpath/mirrorlist.parabola"
+mirrorlistarch="$baseconfpath/mirrorlist.archlinux"
+
+mirror='http://repo.parabolagnulinux.org/$repo/os/$arch'
+mirrorarch='http://mirrors.kernel.org/archlinux/$repo/os/$arch'
+
+. libremessages
+
+cmd="${0##*/}"
+
+downloadfile() {
+	local outfile=$1
+	local url=$2
+	local mesg=("${@:3}")
+	if [[ ! -e $outfile ]] ; then
+		msg "${mesg[@]}"
+		if wget -q "$url" -O "$outfile"; then
+			return 255
+		else
+			die "Failed to download %q. Exiting." "$outfile"
+		fi
+	elif [[ $init ]]; then
+		warning "%q already exists. Skipping." "$outfile"
+	fi
+}
+
+createdir() {
+	local dir=$1
+	if [[ ! -e $dir ]] ; then
+		msg "Creating directory %q" "$dir"
+		mkdir -- "$1" || die "Failed to create directory %q. Exiting." "$dir"
+	elif [[ $init ]]; then
+		warning "%q already exists. Skipping." "$dir"
+	fi
+}
+
+setmirror() {
+	local distro="$1"
+	local mirror="$2"
+	local mirrorlist="$3"
+	if [[ $init ]] && [[ $mirror ]]; then
+		mirrorescaped="${mirror//./\\.}"
+		mirrorescaped="${mirrorescaped//\$/\\$}"
+		msg "Setting %q as the only enabled %s mirror." "${mirror}" "${distro}"
+		sed -i 's|^#\(Server = '"${mirrorescaped}"'\)$|\1|' "${mirrorlist}"
+	fi
+}
+
+filenotfound() {
+	local file=$1
+	if [[ ! -r $1 ]]; then
+		die "Could not read %q. Nothing done." "$file"
+		plain "It may be necessary to run %q without arguments as root to initialize %s." "$cmd" "$name"
+	fi
+}
+
+comparepkgs() {
+	if [[ ${verarch[$pkgname]} ]] ; then
+		cmp=$(vercmp "${ver[$pkgname]}" "${verarch[$pkgname]}")
+		if [[ $cmp -lt 0 ]]; then
+			msg "%s needs update from the Arch package of the same name. Versions: %s - %s" "${pkgname}" "${ver[$pkgname]}" "${verarch[$pkgname]}"
+		fi
+	elif [[ ${provides[$pkgname]} ]]; then
+		for provide in "${provides[$pkgname]}"; do
+			if [[ ${verarch["$provide"]} ]]; then
+				cmp=$(vercmp "${ver[$pkgname]}" "${verarch[$provide]}")
+				if [[ $cmp -lt 0 ]]; then
+					msg "%s may need update from provide candidate %s. Versions: %s - %s" "${pkgname}" "${provide}" "${ver[$pkgname]}" "${verarch[$provide]}"
+				fi
+			fi
+		done
+	else
+		msg "Could not find candidate to compare %s" "${pkgname}"
+	fi
+}
+
+usage() {
+	print "Usage: %q [-n|-h]" "$cmd"
+	print 'Show [libre] packages that need to be updated from Arch repositories.'
+	echo
+	prose "The default mode of operation is to download/update all nescessary
+	       files for comparison, but not compare them.  Specify the \`-n\`
+	       flag to not download anything, but to compare already downloaded
+	       files."
+	echo
+	print 'Options:'
+	flag '-n' "Don't update anything, just compare already downloaded files."
+	flag '-h' 'Show this message'
+}
+
+main() {
+	local UPDATE=1
+	local arg
+	for arg in "$@"; do
+		case "$arg" in
+			-n) UPDATE=0;;
+			-h) usage; return 0;;
+			*)
+				error "Bad arguments. Nothing done."
+				usage >&2
+				return 1
+				;;
+		esac
+	done
+
+	if (( $UPDATE )) ; then
+		if [[ $EUID != 0 ]]; then
+			die "To initialize $name or update %s pacman databases, the script must be run as root. Nothing done." "$name"
+		fi
+
+		if ! [[ -d "$baseconfpath" && -d "$basedbpath" && -d "$dbpath" && -d "$dbpatharch" && -e "${conffile}" && -e "${conffilearch}" && -e "${mirrorlist}" && -e  "${mirrorlist}" ]]; then
+			msg "%s files are missing. Initializing." "${name}"
+			init=1
+		fi
+
+		createdir "$baseconfpath"
+		createdir "$basedbpath"
+		createdir "$dbpath"
+		createdir "$dbpatharch"
+
+		downloadfile "${conffile}" "https://projects.parabolagnulinux.org/abslibre.git/plain/libre/pacman/pacman.conf.x86_64" \
+			"Downloading Parabola %q" pacman.conf
+
+		downloadfile "${conffilearch}" "https://projects.archlinux.org/svntogit/packages.git/plain/pacman/trunk/pacman.conf.x86_64" \
+			"Downloading Arch %q" pacman.conf
+		if [[ $? == 255 ]] ; then
+			msg "Setting Arch mirrorlist file in %q" "${conffilearch}"
+			sed -i "s|/etc/pacman\.d/mirrorlist$|$baseconfpath/mirrorlist.archlinux|" "${conffilearch}"
+		fi
+
+		downloadfile "${mirrorlist}" "https://repo.parabolagnulinux.org/mirrorlist.txt" \
+			"Downloading Parabola %q" mirrorlist
+		if [[ $? == 255 ]] ; then
+			sed -i 's|^Server|#Server|' "${mirrorlist}"
+			setmirror "Parabola" "$mirror" "$mirrorlist"
+		fi
+
+		downloadfile "${mirrorlistarch}" "https://projects.archlinux.org/svntogit/packages.git/plain/pacman-mirrorlist/trunk/mirrorlist" \
+			"Downloading Arch %q" mirrorlist
+		if [[ $? == 255 ]] ; then
+			setmirror "Arch" "$mirrorarch" "$mirrorlistarch"
+		fi
+
+		msg "Synchronizing %s pacman databases for Parabola" "$name"
+		pacman --config "${conffile}" -b "${dbpath}" -Sy || die "Failed to synchronize pacman database for Parabola. Exiting."
+
+		msg "Synchronizing %s pacman databases for Arch" "$name"
+		pacman --config "${conffilearch}" -b "${dbpatharch}" -Sy || die "Failed to synchronize pacman database for Arch. Exiting."
+
+		msg "%s pacman databases are updated. %s is ready. Run %q -n to print results." "$name" "$name" "$cmd"
+		return 0
+	else
+		filenotfound "${dbpath}"
+		filenotfound "${dbpatharch}"
+		filenotfound "${conffile}"
+		filenotfound "${conffilearch}"
+		filenotfound "${mirrorlist}"
+		filenotfound "${mirrorlistarch}"
+	fi
+
+	unset provides ver verarch
+	declare -gA provides ver verarch
+
+	while read -a line; do
+		verarch["${line[0]}"]="${line[1]}"
+	done < <(pacman --dbpath "${dbpatharch}" --config "${conffilearch}" -Ss | grep -v '^ ' | awk -F/ '{print $2}')
+
+	while read -a line; do
+		ver[${line[0]}]="${line[1]}"
+		provides[${line[0]}]="${line[@]:2}"
+		pkgname=${line[0]}
+		comparepkgs
+	done < <(expac -b "${dbpath}" -c "${conffile}" -Ss '%r/%n %v %S' | awk -F/ '$1 == "libre" {print $2}')
+}
+
+main "$@"
diff --git a/src/pkgbuild-summarize-nonfree b/src/pkgbuild-summarize-nonfree
index cf3be28..9b3d8e6 100755
--- a/src/pkgbuild-summarize-nonfree
+++ b/src/pkgbuild-summarize-nonfree
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (C) 2013 Luke Shumaker <lukeshu@sbcglobal.net>
 #
 # License: GNU GPLv3+