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188 lines
3.9 KiB
188 lines
3.9 KiB
# Copyright 1999-2008 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Id: maven.eselect,v 1.1 2009/05/12 19:08:17 ali_bush Exp $
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DESCRIPTION="Manage Maven targets"
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MAINTAINER="jieryn@gmail.com"
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VERSION="0.1"
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MVN="${ROOT}/usr/bin/mvn"
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# find a list of mvn symlink targets, best first.
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find_targets() {
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for f in $(ls -r "${MVN}"-[0-9]* 2> /dev/null) ; do
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if [[ -f "${f}" ]] ; then
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echo $(basename "${f}")
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fi
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done
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}
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# get a named or numbered target.
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find_target() {
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local target=${1}
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if is_number "${target}" && [[ ${target} -ge 1 ]] ; then
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targets=( $(find_targets ) )
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[[ -z "${targets}" ]] && die -q "No targets found!"
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target=${targets[$(( ${target} - 1 ))]}
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fi
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if [[ "${target}" = mvn-[0-9]* ]] && [[ -f "${ROOT}/usr/bin/${target}" ]] ; then
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echo ${target}
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else
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die -q "Target \"${1}\" doesn't appear to be valid!"
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fi
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}
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# try to remove the mvn symlink.
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remove_symlink() {
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rm "${MVN}" &>/dev/null
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}
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# determine the current target.
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get_target() {
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local canonicalised=$(canonicalise "${MVN}")
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echo $(basename "${canonicalised}")
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}
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# set the Maven symlink.
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set_symlink() {
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local target=$(find_target "${1}")
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remove_symlink
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ln -s "${ROOT}/usr/bin/${target}" "${MVN}" || \
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die "Couldn't set ${target} symlink."
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}
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### show action ###
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describe_show() {
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echo "Show current Maven target"
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}
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do_show() {
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if [[ ${#} -gt 0 ]]; then
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die -q "No parameters allowed."
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fi
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if [[ -L "${MVN}" ]] ; then
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get_target
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return 0
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elif [[ -e "${MVN}" ]] ; then
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echo "(not a symlink)" >&2
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return 1
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else
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echo "(unset)" >&2
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return 1
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fi
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}
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### list action ###
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describe_list() {
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echo "List available Maven targets"
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}
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do_list() {
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if [[ ${#} -gt 0 ]]; then
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die -q "Usage error: no parameters allowed."
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fi
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local i targets
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targets=( $(find_targets) )
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if [[ -n ${targets[@]} ]] ; then
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local canonicalised basename
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for (( i = 0 ; i < ${#targets[@]} ; i = i + 1 )) ; do
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canonicalised=$(canonicalise "${MVN}")
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basename=$(basename "${canonicalised}")
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if [[ "${targets[${i}]}" = "${basename}" ]] ; then
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targets[${i}]="${targets[${i}]} $(highlight '*')"
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fi
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done
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write_list_start "Available Maven targets:"
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write_numbered_list "${targets[@]}"
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else
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write_kv_list_entry "(none found)" ""
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fi
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}
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### set action ###
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describe_set() {
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echo "Set a new Maven target"
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}
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describe_set_options() {
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echo "target : Target name or number (from 'list' action)"
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}
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describe_set_parameters() {
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echo "<target>"
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}
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do_set() {
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if [[ $# -gt 1 ]]; then
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die -q "Too many parameters. Expected only one."
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fi
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local target=${1}
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if [[ -z "${target}" ]] ; then
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die -q "You didn't give me a target name or number."
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elif [[ -L "${MVN}" ]] ; then
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if ! remove_symlink ; then
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die -q "Can't remove existing Maven provider."
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elif ! set_symlink "${1}" ; then
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die -q "Can't set new Maven provider."
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fi
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elif [[ -e "${MVN}" ]] ; then
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write_warning_msg "Can't set a new Maven provider. There's a file in the way at ${MVN}. You can try removing it manually, and then re-running this command."
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else
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set_symlink "${target}" || die -q "Wasn't able to set a new provider."
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fi
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}
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### update action ###
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describe_update() {
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echo "Set the Maven target to the latest if the current target is invalid or if the given target is the latest"
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}
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describe_update_options() {
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echo "target (optional) : Target name (from 'list' action)"
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}
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describe_update_parameters() {
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echo "<target>"
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}
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do_update() {
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if [[ $# -gt 1 ]] ; then
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die -q "Too many parameters. Expected only one."
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fi
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# For pkg_postrm
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if [[ ! $(find_targets) ]]; then
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remove_symlink
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return
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fi
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local canonicalised=$(canonicalise "${MVN}")
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if [[ ! -L "${MVN}" ]] || [[ ! -f "${canonicalised}" ]] ; then
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do_set 1
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elif [[ -n "${1}" ]] ; then
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# Check whether target name is valid.
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find_target "${1}" > /dev/null
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if [[ "${1}" == "$(find_target 1)" ]] ; then
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do_set 1
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fi
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fi
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}
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# vim: set ft=eselect :
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