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path: root/scripts/libmakepkg/source/git.sh.in
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#!/bin/bash
#
#   git.sh - function for handling the download and "extraction" of Git sources
#
#   Copyright (c) 2015-2017 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/>.
#

[[ -n "$LIBMAKEPKG_SOURCE_GIT_SH" ]] && return
LIBMAKEPKG_SOURCE_GIT_SH=1


LIBRARY=${LIBRARY:-'@libmakepkgdir@'}

source "$LIBRARY/util/message.sh"
source "$LIBRARY/util/pkgbuild.sh"


download_git() {
        local netfile=$1

        local dir=$(get_filepath "$netfile")
        [[ -z "$dir" ]] && dir="$SRCDEST/$(get_filename "$netfile")"

        local repo=$(get_filename "$netfile")

        local url=$(get_url "$netfile")
        url=${url#git+}
        url=${url%%#*}
        url=${url%%\?*}

        if [[ ! -d "$dir" ]] || dir_is_empty "$dir" ; then
                msg2 "$(gettext "Cloning %s %s repo...")" "${repo}" "git"
                if ! git clone --mirror "$url" "$dir"; then
                        error "$(gettext "Failure while downloading %s %s repo")" "${repo}" "git"
                        plain "$(gettext "Aborting...")"
                        exit 1
                fi
        elif (( ! HOLDVER )); then
                cd_safe "$dir"
                # Make sure we are fetching the right repo
                if [[ "$url" != "$(git config --get remote.origin.url)" ]] ; then
                        error "$(gettext "%s is not a clone of %s")" "$dir" "$url"
                        plain "$(gettext "Aborting...")"
                        exit 1
                fi
                msg2 "$(gettext "Updating %s %s repo...")" "${repo}" "git"
                if ! git fetch --all -p; then
                        # only warn on failure to allow offline builds
                        warning "$(gettext "Failure while updating %s %s repo")" "${repo}" "git"
                fi
        fi
}

extract_git() {
        local netfile=$1

        local fragment=$(get_uri_fragment "$netfile")
        local repo=$(get_filename "$netfile")

        local dir=$(get_filepath "$netfile")
        [[ -z "$dir" ]] && dir="$SRCDEST/$(get_filename "$netfile")"

        msg2 "$(gettext "Creating working copy of %s %s repo...")" "${repo}" "git"
        pushd "$srcdir" &>/dev/null

        local updating=0
        if [[ -d "${dir##*/}" ]]; then
                updating=1
                cd_safe "${dir##*/}"
                if ! git fetch; then
                        error "$(gettext "Failure while updating working copy of %s %s repo")" "${repo}" "git"
                        plain "$(gettext "Aborting...")"
                        exit 1
                fi
                cd_safe "$srcdir"
        elif ! git clone "$dir" "${dir##*/}"; then
                error "$(gettext "Failure while creating working copy of %s %s repo")" "${repo}" "git"
                plain "$(gettext "Aborting...")"
                exit 1
        fi

        cd_safe "${dir##*/}"

        local ref=origin/HEAD
        if [[ -n $fragment ]]; then
                case ${fragment%%=*} in
                        commit|tag)
                                ref=${fragment##*=}
                                ;;
                        branch)
                                ref=origin/${fragment##*=}
                                ;;
                        *)
                                error "$(gettext "Unrecognized reference: %s")" "${fragment}"
                                plain "$(gettext "Aborting...")"
                                exit 1
                esac
        fi

        if [[ $ref != "origin/HEAD" ]] || (( updating )) ; then
                if ! git checkout --force --no-track -B makepkg $ref; then
                        error "$(gettext "Failure while creating working copy of %s %s repo")" "${repo}" "git"
                        plain "$(gettext "Aborting...")"
                        exit 1
                fi
        fi

        popd &>/dev/null
}