diff options
Diffstat (limited to 'src/gitget/gitget')
| -rwxr-xr-x | src/gitget/gitget | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/src/gitget/gitget b/src/gitget/gitget new file mode 100755 index 0000000..4d127c7 --- /dev/null +++ b/src/gitget/gitget @@ -0,0 +1,221 @@ +#!/usr/bin/env bash + +# Copyright (C) 2012-2013 Pacman Development Team <pacman-dev@archlinux.org> +# Copyright (C) 2012-2013 Luke Shumaker <lukeshu@sbcglobal.net> +# +# License: GNU GPLv2+ +# +# 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=$4 + local push=${5:-} + + 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" + if [[ -n $push ]]; then + git config remote.origin.pushUrl "$push" + fi + git checkout "$ref" + else + cd_safe "$dir" + # Make sure we are fetching the right repo + if [[ "$url" != "$(git config --get remote.origin.url)" ]] ; then + if $FORCE; then + git config remote.origin.url "$url" + else + error "%s is not a clone of %s" "$dir" "$url" + plain "Aborting..." + exit 1 + fi + fi + if [[ -n $push ]] ; then + if $FORCE; then + git config remote.origin.pushUrl "$push" + else + local curpush="$(git config --get remote.origin.pushUrl)" + if [[ $? != 0 ]] ; then + error "%s does not have a %s configured" pushUrl "$name" + plain "Aborting..." + exit 1 + elif [[ $curpush != "$push" ]]; then + error "%s has %s configured, but it doesn't match %s" "$name" pushUrl "$push" + plain "Aborting..." + exit 1 + fi + fi + fi + msg2 "Updating %s %s repo..." "${name}" "git" + if ! { git fetch --all -p && git checkout "$ref" && 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=$3 + local push=${4:-} + + 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 + if [[ -n $push ]]; then + cd_safe "$dir" + git config remote.origin.pushUrl "$push" + fi + else + cd_safe "$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 + if [[ -n $push ]] ; then + if $FORCE; then + git config remote.origin.pushUrl "$push" + else + local curpush="$(git config --get remote.origin.pushUrl)" + if [[ $? != 0 ]] ; then + error "%s does not have a %s configured" pushUrl "$name" + plain "Aborting..." + exit 1 + elif [[ $curpush != "$push" ]]; then + error "%s has %s configured, but it doesn't match %s" "$name" pushUrl "$push" + plain "Aborting..." + exit 1 + fi + fi + 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|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 compatibility with `makepkg` source + URLs.' + echo + prose "The URL may be prefixed with \`git+\`. This is also for + compatibility 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 '-f' \ + 'Instead of checking to make sure configured URLs match, force + the update, and set the URLs.' + flag "-p $(_ URL)" \ + 'In addition to setting or checking `remotes.origin.url`, also + set or check `remotes.origin.pushUrl`' + flag "-n $(_ NAME)" \ + 'In messages, instead of using the basename of DIRECTORY as the + repository name, use NAME' + flag '-h' 'Show this message' +} + +FORCE=false +main() { + local push='' + local name='' + while getopts 'fp:n:h' flag; do + case "${flag}" in + f) FORCE=true;; + p) push=$OPTARG;; + n) name=$OPTARG;; + h) usage; return 0;; + *) usage >&2; return 1;; + esac + done + shift $(($OPTIND - 1)) + [[ $# == 3 ]] || { usage >&2; return 1; } + local mode=$1 + local url=${2#git+} + local dir=$3 + + local urlmain=${url%%#*} + local urlfrag=${url#*#} + if [[ "$urlfrag" == "$urlmain" ]]; then + urlfrag='' + fi + local ref=${urlfrag#*=} + + if [[ -z $ref ]]; then + ref=master + fi + + name=${name:-${dir##*/}} + + case "$mode" in + checkout) download_git_checkout "$urlmain" "$ref" "$dir" "$name" "$push";; + bare) download_git_bare "$urlmain" "$dir" "$name" "$push";; + *) usage >&2; return 1;; + esac +} + +main "$@" |