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#!/bin/bash
#
# repo-remove - remove a package entry from a given repo database file
# @configure_input@
#
# Copyright (c) 2007-2008 Dan McGee <dan@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/>.
# gettext initialization
export TEXTDOMAIN='pacman'
export TEXTDOMAINDIR='@localedir@'
myver='@PACKAGE_VERSION@'
confdir='@sysconfdir@'
QUIET=0
REPO_DB_FILE=""
msg() {
[ $QUIET -ne 0 ] && return
local mesg=$1; shift
printf "==> ${mesg}\n" "$@" >&1
}
msg2() {
[ $QUIET -ne 0 ] && return
local mesg=$1; shift
printf " -> ${mesg}\n" "$@" >&1
}
warning() {
local mesg=$1; shift
printf "==> $(gettext "WARNING:") ${mesg}\n" "$@" >&2
}
error() {
local mesg=$1; shift
printf "==> $(gettext "ERROR:") ${mesg}\n" "$@" >&2
}
# print usage instructions
usage() {
printf "$(gettext "repo-remove %s\n\n")" $myver
printf "$(gettext "usage: %s [-q] <path-to-db> <packagename> ...\n\n")" "$0"
printf "$(gettext "\
repo-remove will update a package database by removing the package name\n\
specified on the command line from the given repo database. Multiple\n\
packages to remove can be specified on the command line.\n\n")"
printf "$(gettext "\
The -q/--quiet flag will force this program to run silently except\n\
in the case of warnings or errors.\n\n")"
echo "$(gettext "Example: repo-remove /path/to/repo.db.tar.gz kernel26")"
}
version() {
printf "repo-remove (pacman) %s\n" "$myver"
printf "$(gettext "\
Copyright (c) 2007-2008 Dan McGee <dan@archlinux.org>.\n\n\
This is free software; see the source for copying conditions.\n\
There is NO WARRANTY, to the extent permitted by law.\n")"
}
# test if a file is a repository DB
test_repo_db_file () {
if [ -f "$REPO_DB_FILE" ]; then
if bsdtar -tf "$REPO_DB_FILE" | grep -q "/desc"; then
return 0 # YES
fi
fi
return 1 # NO
}
# remove existing entries from the DB
db_remove_entry() {
pushd "$gstmpdir" 2>&1 >/dev/null
# remove any other package in the DB with same name
local existing
for existing in *; do
if [ "${existing%-*-*}" = "$1" ]; then
msg2 "$(gettext "Removing existing package '%s'...")" "$existing"
rm -rf "$existing"
fi
done
popd 2>&1 >/dev/null
} # end db_remove_entry
# PROGRAM START
# determine whether we have gettext; make it a no-op if we do not
if [ ! $(type -t gettext) ]; then
gettext() {
echo "$@"
}
fi
# check for help flags
if [ "$1" = "-h" -o "$1" = "--help" ]; then
usage
exit 0
fi
# check for version flags
if [ "$1" = "-V" -o "$1" = "--version" ]; then
version
exit 0
fi
# check for correct number of args
if [ $# -lt 2 ]; then
usage
exit 1
fi
# check for and store the name of a realpath-like program
if [ $(type -t realpath) ]; then
realpath='realpath'
elif [ $(type -t readlink) ]; then
realpath='readlink -f'
else
error "$(gettext "Either realpath or readlink are required by repo-add.")"
exit 1 # $E_MISSING_PROGRAM
fi
# source system and user makepkg.conf
if [ -r "$confdir/makepkg.conf" ]; then
source "$confdir/makepkg.conf"
else
error "$(gettext "%s not found. Cannot continue.")" "$confdir/makepkg.conf"
exit 1 # $E_CONFIG_ERROR
fi
if [ -r ~/.makepkg.conf ]; then
source ~/.makepkg.conf
fi
# main routine
gstmpdir=$(mktemp -d /tmp/repo-remove.XXXXXXXXXX) || (\
error "$(gettext "Cannot create temp directory for database building.")"; \
exit 1)
success=0
# parse arguments
for arg in "$@"; do
if [ "$arg" == "--quiet" -o "$arg" == "-q" ]; then
QUIET=1
elif [ -z "$REPO_DB_FILE" ]; then
# store absolute path to repo DB
REPO_DB_FILE=$($realpath "$arg")
if ! test_repo_db_file; then
error "$(gettext "Repository file '%s' is not a proper pacman database.")" "$REPO_DB_FILE"
exit 1
elif [ -f "$REPO_DB_FILE" ]; then
msg "$(gettext "Extracting database to a temporary location...")"
bsdtar -xf "$REPO_DB_FILE" -C "$gstmpdir"
fi
else
msg "$(gettext "Searching for package '%s'...")" "$arg"
if db_remove_entry "$arg"; then
success=1
else
error "$(gettext "Package matching '%s' not found.")" "$arg"
fi
fi
done
# if all operations were a success, re-zip database
if [ $success -eq 1 ]; then
msg "$(gettext "Creating updated database file '%s'")" "$REPO_DB_FILE"
pushd "$gstmpdir" 2>&1 >/dev/null
if [ -n "$(ls)" ]; then
[ -f "${REPO_DB_FILE}.old" ] && rm "${REPO_DB_FILE}.old"
[ -f "$REPO_DB_FILE" ] && mv "$REPO_DB_FILE" "${REPO_DB_FILE}.old"
case "$DB_COMPRESSION" in
gz) TAR_OPT="z" ;;
bz2) TAR_OPT="j" ;;
*) warning "$(gettext "No compression set.")" ;;
esac
bsdtar -c${TAR_OPT}f "$REPO_DB_FILE" *
else
error "$(gettext "All packages have been removed from the database. Deleting '%s'.")" "$REPO_DB_FILE"
rm "$REPO_DB_FILE"
fi
popd 2>&1 >/dev/null
else
msg "$(gettext "No packages modified, nothing to do.")"
fi
# remove the temp directory used to unzip
[ -d "$gstmpdir" ] && rm -rf "$gstmpdir"
# vim: set ts=2 sw=2 noet:
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