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#!/bin/bash
#
# git.sh - function for handling the download and "extraction" of Git sources
#
# Copyright (c) 2015-2024 Pacman Development Team <pacman-dev@lists.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 "$LIBMAKEPKG_SOURCE_GIT_SH" ]] && return
LIBMAKEPKG_SOURCE_GIT_SH=1
MAKEPKG_LIBRARY=${MAKEPKG_LIBRARY:-'@libmakepkgdir@'}
source "$MAKEPKG_LIBRARY/util/error.sh"
source "$MAKEPKG_LIBRARY/util/message.sh"
source "$MAKEPKG_LIBRARY/util/pkgbuild.sh"
download_git() {
# abort early if parent says not to fetch
if declare -p get_vcs > /dev/null 2>&1; then
(( get_vcs )) || return
fi
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 --origin=origin ---mirror "$url" "$dir"; then
error "$(gettext "Failure while downloading %s %s repo")" "${repo}" "git"
plainerr "$(gettext "Aborting...")"
exit 1
fi
elif (( ! HOLDVER )); then
cd_safe "$dir"
# When invoking git on a potentially bare repository, we should pass -c safe.bareRepository=all
# to avoid breaking when the option is globally set to explicit
# Make sure we are fetching the right repo
local remote_url="$(git -c safe.bareRepository=all config --get remote.origin.url)"
if [[ "${url%%.git}" != "${remote_url%%.git}" ]] ; then
error "$(gettext "%s is not a clone of %s")" "$dir" "$url"
plainerr "$(gettext "Aborting...")"
exit $E_NOT_A_CLONE_OF
fi
msg2 "$(gettext "Updating %s %s repo...")" "${repo}" "git"
if ! git -c safe.bareRepository=all fetch --all -p; then
# only warn on failure to allow offline builds
warning "$(gettext "Failure while updating %s %s repo")" "${repo}" "git"
fi
fi
# Sanitize the cloned repo
# $GIT_DIR/info/attributes overrides .gitattributes, and thus no files in the repository
# can be altered by git features like export-subst or export-ignore
local MAKEPKG_GIT_DIR="$(git -c safe.bareRepository=all -C "$dir" rev-parse --absolute-git-dir)"
mkdir -p "$MAKEPKG_GIT_DIR/info"
echo "* -export-subst -export-ignore" > "$MAKEPKG_GIT_DIR/info/attributes"
}
extract_git() {
local netfile=$1 tagname
local fragment=$(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"
plainerr "$(gettext "Aborting...")"
exit 1
fi
cd_safe "$srcdir"
elif ! git clone --origin=origin -s "$dir" "${dir##*/}"; then
error "$(gettext "Failure while creating working copy of %s %s repo")" "${repo}" "git"
plainerr "$(gettext "Aborting...")"
exit 1
fi
cd_safe "${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")" "${fragment}"
plainerr "$(gettext "Aborting...")"
exit 1
esac
fi
if [[ ${fragment%%=*} = tag ]]; then
tagname="$(git tag -l --format='%(tag)' "$ref")"
if [[ -n $tagname && $tagname != "$ref" ]]; then
error "$(gettext "Failure while checking out version %s, the git tag has been forged")" "$ref"
plainerr "$(gettext "Aborting...")"
exit 1
fi
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"
plainerr "$(gettext "Aborting...")"
exit 1
fi
fi
popd &>/dev/null
}
calc_checksum_git() {
local netfile=$1 integ=$2 ret=0 shellopts dir url fragment sum
# this function requires pipefail - save current status to restore later
shellopts=$(shopt -p -o pipefail)
shopt -s -o pipefail
dir=$(get_filepath "$netfile")
url=$(get_url "$netfile")
fragment=$(get_uri_fragment "$url")
case ${fragment%%=*} in
tag|commit)
fragval=${fragment##*=}
sum=$(GIT_CONFIG_GLOBAL=/dev/null GIT_CONFIG_SYSTEM=/dev/null git -c core.abbrev=no -C "$dir" archive --format tar "$fragval" | "${integ}sum" 2>&1) || ret=1
sum="${sum%% *}"
;;
*)
sum="SKIP"
;;
esac
eval "$shellopts"
printf '%s' "$sum"
return $ret
}
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