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|
#!/usr/bin/env 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
# from makepkg
dir_is_empty() {
(
shopt -s dotglob nullglob
files=("$1"/*)
(( ${#files} == 0 ))
)
}
# from makepkg
cd_safe() {
if ! cd "$1"; then
error "Failed to change to directory %s" "$1"
plain "Aborting..."
exit 1
fi
}
# from makepkg
download_git_checkout() (
local url=$1
local ref=$2
local dir=$3
local name=${4:-${dir##*/}}
if [[ ! -d "$dir/.git" ]] ; then
msg2 "Cloning %s %s repo..." "${name}" "git"
if ! git clone "$url" "$dir"; then
error "Failure while downloading %s %s repo" "${name}" "git"
plain "Aborting..."
exit 1
fi
cd_safe "$dir"
git checkout "$ref"
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" "$url"
plain "Aborting..."
exit 1
fi
msg2 "Updating %s %s repo..." "${name}" "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
)
# from makepkg
download_git_bare() (
local url=$1
local dir=$2
local name=${3:-${dir##*/}}
if [[ ! -d "$dir" ]] || dir_is_empty "$dir" ; then
msg2 "Cloning %s %s repo..." "${name}" "git"
if ! git clone --mirror "$url" "$dir"; then
error "Failure while downloading %s %s repo" "${name}" "git"
plain "Aborting..."
exit 1
fi
else
cd_safe "$dir"
# Make sure we are fetching the right repo
if [[ "$url" != "$(git config --get remote.origin.url)" ]] ; then
error "%s is not a clone of %s" "$dir" "$url"
plain "Aborting..."
exit 1
fi
msg2 "Updating %s %s repo..." "${name}" "git"
if ! git fetch --all -p; then
# only warn on failure to allow offline builds
warning "Failure while updating %s %s repo" "${name}" "git"
fi
fi
)
usage() {
print 'Usage: %s [OPTIONS] bare URL DIRECTORY' "${0##*/}"
print 'Usage: %s [OPTIONS] checkout URL DIRECTORY' "${0##*/}"
print 'A URL-handler for git urls. Capable of updating or cloning.'
echo
prose "Clones or pulls from the git URL, to a local DIRECTORY. If
\`bare\` is specified, it will create a bare repository; if
\`checkout\` is specified, it will create or update a working tree."
echo
prose 'For a checkout, the tree to checkout is specified by appending
`#ANYTHING=TREE-ISH` to the URL. For example, `#branch=stable`,
or `#tag=v12.3`. Whatever is on the left side of the equal sign
is ignored, this is for compatability with `makepkg` source
URLs.'
echo
prose "The URL may be prefixed with \`git+\`. This is also for
compatability with \`makepkg\` source URLs."
echo
prose "It does safety checks, figures out whether to clone or pull, and
other helpful things. This exists because the same
\`download_git\` function from makepkg was being copied and
pasted again and again."
echo
print "Options:"
flag "-n $(_ NAME)" \
'In messages, instead of using the basename of DIRECTORY as the
repository name, use NAME'
flag '-h' 'Show this message'
}
main() {
local name=''
while getopts 'n:h' flag; do
case "${flag}" in
n) name=$OPTARG;;
h) usage; return 0;;
*) usage >&2; return 1;;
esac
done
[[ $# == 3 ]] || { usage >&2; return 1; }
local mode=$1
local url=${2#git+}
local dir=$3
local urlmain=${url%%#*}
local urlfrag=${url#*#}
local ref=${urlfrag#*=}
name=${name:-${dir##*/}}
case "$mode" in
checkout) download_git_checkout "$urlmain" "$ref" "$dir" "$name";;
bare) download_git_bare "$urlmain" "$dir" "$name";;
*) usage >&2; return 1;;
esac
}
main "$@"
|
