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#!/bin/bash set -f VERBOSITY=0 SUPPORTED_VCS="bzr hg git url" RET_UNCLAIMED=3 RET_SUCCESS=0 RET_FAIL=1 DEF_COMMAND="vcs_run" Usage() { cat <<EOF Usage: ${0##*/} [ options ] repo-url [command [arguments]] obtain repository from repo-url, and execute 'command' with 'arguments' Command will default to '$DEF_COMMAND' in the top level of the repository. options: -t | --target DIR checkout branch to DIR [./(basename repo)] --vcs-type V repo-url is of type 'V' [auto] supported: auto $SUPPORTED_VCS -v | --verbose increase verbosity -D | --deps attempt to install dependencies if necessary Example: * run 'stack.sh' in git://github.com/openstack-dev/devstack.git vcs-run --deps git://github.com/openstack-dev/devstack.git stack.sh * build cloud-utils vcs-run --deps lp:cloud-utils -- ./tools/build-deb -us -uc EOF } bad_Usage() { Usage 1>&2; [ $# -eq 0 ] || error "$@"; return 1; } error() { echo "$@" 1>&2; } debug() { local level=${1}; shift; [ "${level}" -gt "${VERBOSITY}" ] && return error "${@}" } has_cmd() { command -v "$1" >/dev/null 2>&1 } get_cmd() { # get_cmd(cmd, get_deps, packages) # get command 'cmd' if necessary by installing 'packages' # if 'get_deps' is false, then return error. local cmd="$1" deps="$2" shift 2 has_cmd "$1" && return 0 $deps || { error "No cmd '$cmd', but nodeps specified"; return 1; } apt_install "$@" } apt_install() { local cmd="" cmd=( env DEBIAN_FRONTEND=noninteractive apt-get --quiet --assume-yes install "$@" ) [ "$(id -u)" = "0" ] || cmd=( sudo "${cmd[@]}" ) debug 1 "installing dependencies:" "${cmd[@]}" "${cmd[@]}" } vcsget_bzr() { # deps type src target cmd local deps="$1" rtype="$2" src="$3" target="$4" tmp="" if [ "$rtype" = "auto" ]; then case "$src" in *.bzr|bzr:*|lp:*) :;; *) if ! [ -d "$src" -a -d "$src/.bzr" ]; then return $RET_UNCLAIMED fi src=$(cd "$src" && pwd) || return $RET_FAIL ;; esac fi get_cmd bzr "$deps" bzr || return $RET_FAIL if [ -z "$target" ]; then case "$src" in */*) tmp="${src##*/}";; *:*) tmp="${src#*:}";; *) tmp="$src" esac target="${tmp%.bzr}" fi local cmd="" q="--quiet" [ $VERBOSITY -gt 1 ] && q="" if [ -d "$target/.bzr" ]; then debug 1 "updating $target: bzr pull ${q:+$q }$src" ( cd "$target" && bzr pull $q "$src" ) else debug 1 "branching to $target: bzr branch ${q:+$q }$src" bzr branch $q "$src" "$target" fi [ $? -eq 0 ] || return $RET_FAIL _RET="$target" return 0 } vcsget_git() { # deps type src target cmd local deps="$1" rtype="$2" src="$3" target="$4" tmp="" if [ "$rtype" = "auto" ]; then case "$src" in *.git|git:*) :;; *) if ! [ -d "$src" -a -d "$src/.git" ]; then return $RET_UNCLAIMED fi src=$(cd "$src" && pwd) || return $RET_FAIL ;; esac fi get_cmd git "$deps" git || return $RET_FAIL if [ -z "$target" ]; then tmp="${src##*/}" target="${tmp%.git}" fi local q="--quiet" [ $VERBOSITY -gt 1 ] && q="" if [ -d "$target/.git" ]; then debug 1 "updating $target: git pull ${q:+$q }${src}" ( cd "$target" && git pull $q "$src" ) else debug 1 "cloning to $target: git clone ${q:+$q }$src $target" git clone $q "$src" "$target" || return $RET_FAIL fi [ $? -eq 0 ] || return $RET_FAIL _RET="$target" return 0 } vcsget_hg() { # deps type src target cmd local deps="$1" rtype="$2" src="$3" target="$4" tmp="" if [ "$rtype" = "auto" ]; then case "$src" in *.hg|hg:*) :;; *) return $RET_UNCLAIMED;; esac fi get_cmd hg "$deps" mercurial || return $RET_FAIL if [ -z "$target" ]; then tmp="${src##*/}" target="${tmp%.hg}" fi local quiet="--quiet" [ $VERBOSITY -gt 1 ] && quiet="" hg clone $quiet "$src" "$target" || return $RET_FAIL _RET="$target" return 0 } vcsget_url() { # deps type src target cmd # if target is not specified, target directory is md5sum # of the url. If cmd does not start with a /, then use it # as the output filename. If it does start with a /, then # store the url in DEF_COMMAND in this directory. local deps="$1" rtype="$2" src="$3" target="$4" cmd="$5" tmp="" if [ "$rtype" = "auto" ]; then case "$src" in http://*|https://*) :;; *) return $RET_UNCLAIMED;; esac fi get_cmd wget "$deps" wget || return $RET_FAIL if [ -z "$target" ]; then target=$(echo "$src" | md5sum) target=${target% -} fi local cmdname="$cmd" if [ "${cmd#/}" != "$cmd" ]; then cmdname="./$DEF_COMMAND" fi local quiet="--quiet" [ $VERBOSITY -gt 1 ] && quiet="" mkdir -p "$target" || { error "failed mkdir -p '$target'"; return $RET_FAIL; } debug 1 "wget -O '$target/$cmdname' '$src'" wget $quiet -O "$target/$cmdname" "$src" || { error "failed wget -O '$target/$cmdname' '$src'" return $RET_FAIL } _RET="$target" return 0 } main() { local short_opts="hDt:v" local long_opts="help,deps,target:,vcs-type:,verbose" local getopt_out=$(getopt --name "${0##*/}" \ --options "${short_opts}" --long "${long_opts}" -- "$@") && eval set -- "${getopt_out}" || { bad_Usage; return; } local cur="" next="" target="" rtype="auto" tmp="" local def_target="" deps="" getdeps=false arg0="" while [ $# -ne 0 ]; do cur="$1"; next="$2"; case "$cur" in -h|--help) Usage ; exit 0;; -D|--deps) getdeps=true;; -t|--target) target=$next; shift;; --vcs-type) rtype=$next; shift;; -v|--verbose) VERBOSITY=$((${VERBOSITY}+1));; --) shift; break;; esac shift; done [ $# -gt 0 ] || { bad_Usage "must provide at least repo"; return; } src_repo="$1" shift [ -n "$src_repo" ] || { error "empty source repo?"; return 1; } if [ -n "$target" ]; then tmp=$(dirname "${target}") [ -d "$tmp" ] || mkdir -p "$tmp" || { error "failed to create $tmp for '$target'"; return 1; } fi if [ $# -eq 0 ]; then set -- "$DEF_COMMAND" fi arg0="$1" local vcs vcslist="${SUPPORTED_VCS}" [ "$rtype" = "auto" ] || vcslist="$rtype" local workd="" for vcs in $vcslist; do has_cmd "vcsget_$vcs" || { error "unknown vcs type '$vcs'"; return 1; } "vcsget_$vcs" "$getdeps" "$rtype" "$src_repo" "$target" "$arg0" ret=$? case "$ret" in $RET_UNCLAIMED) :;; # not claimed $RET_SUCCESS) workd="$_RET"; break;; *) error "failed to get '$src_repo' of type '$vcs'"; return $ret;; esac done [ -d "$workd" ] || { error "unknown source repo '$src_repo'"; return 1; } cd "$workd" || { error "failed to enter target dir '$workd'"; return 1; } if [ -f "./$1" ]; then if [ ! -x "./$1" ]; then debug 1 "adding execute to ./$1" chmod ugo+x "./$1" || { error "failed add execute to ./$1"; return 1; } fi tmp="./$1" shift set -- "$tmp" "$@" elif ! has_cmd "$1"; then error "command '$1' not available anywhere" return 1 fi debug 1 "executing command in $PWD:" "$@" exec "$@" } main "$@" # vi: ts=4 noexpandtab