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#!/bin/bash
# Copyright (c) 2012-2013 Pacman Development Team <pacman-dev@archlinux.org>
# Copyright (c) 2012-2013 Luke Shumaker <lukeshu@sbcglobal.net>
#
# 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/>.
. libremessages
cd_safe() {
if ! cd "$1"; then
error "Failed to change to directory %s" "$1"
plain "Aborting..."
exit 1
fi
}
download_git() {
if [[ ! -d "$dir/.git" ]] ; then
msg2 "Cloning %s %s repo..." "${repo}" "git"
if ! git clone "$repo" "$dir"; then
error "Failure while downloading %s %s repo" "${repo}" "git"
plain "Aborting..."
exit 1
fi
else
cd_safe "$dir"
# Make sure we are fetching the right repo
if [[ "$repo" != "$(git config --get remote.origin.url)" ]] ; then
error "%s is not a clone of %s" "$dir" "$repo"
plain "Aborting..."
exit 1
fi
msg2 "Updating %s %s repo..." "${repo}" "git"
if ! git pull origin "$ref"; then
# only warn on failure to allow offline builds
warning "Failure while updating %s %s repo" "${repo}" "git"
fi
fi
}
usage() {
print 'Usage: %s repo ref dir' "${0##*/}"
echo
print "Clones or pulls from the git URL 'repo', and checks out the git ref"
print "'ref' to the directory 'dir'."
echo
print "It does safety checks, figures out whether to clone or pull, and other"
print "helpful things. This exists because the same 'download_git' function"
print "from makepkg was being copied again and again."
}
main() {
[[ $# == 3 ]] || { usage >&2; return 1; }
repo=$1
ref=$2
dir=$3
[[ -d "${dir%/*}" ]] || mkdir -p "${dir%/*}"
download_git
}
main "$@"
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