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# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id: ecj.eselect,v 1.1 2008/07/21 22:07:24 betelgeuse Exp $
DESCRIPTION="Manage ECJ targets"
MAINTAINER="chewi@aura-online.co.uk"
VERSION="0.3"
ECJ="${ROOT}/usr/bin/ecj"
# find a list of ecj symlink targets, best first.
find_targets() {
for f in $(ls -r "${ECJ}"-[0-9]* 2> /dev/null) ; do
if [[ -f "${f}" ]] ; then
echo $(basename "${f}")
fi
done
}
# get a named or numbered target.
find_target() {
local target=${1}
if is_number "${target}" && [[ ${target} -ge 1 ]] ; then
targets=( $(find_targets ) )
[[ -z "${targets}" ]] && die -q "No targets found!"
target=${targets[$(( ${target} - 1 ))]}
fi
if [[ "${target}" = ecj-[0-9]* ]] && [[ -f "${ROOT}/usr/bin/${target}" ]] ; then
echo ${target}
else
die -q "Target \"${1}\" doesn't appear to be valid!"
fi
}
# try to remove the ecj symlink.
remove_symlink() {
rm "${ECJ}" &>/dev/null
}
# determine the current target.
get_target() {
local canonicalised=$(canonicalise "${ECJ}")
echo $(basename "${canonicalised}")
}
# set the ecj symlink.
set_symlink() {
local target=$(find_target "${1}")
remove_symlink
ln -s "${ROOT}/usr/bin/${target}" "${ECJ}" || \
die "Couldn't set ${target} symlink."
}
### show action ###
describe_show() {
echo "Show current ECJ target"
}
do_show() {
if [[ ${#} -gt 0 ]]; then
die -q "No parameters allowed."
fi
if [[ -L "${ECJ}" ]] ; then
get_target
return 0
elif [[ -e "${ECJ}" ]] ; then
echo "(not a symlink)" >&2
return 1
else
echo "(unset)" >&2
return 1
fi
}
### list action ###
describe_list() {
echo "List available ECJ targets"
}
do_list() {
if [[ ${#} -gt 0 ]]; then
die -q "Usage error: no parameters allowed."
fi
local i targets
targets=( $(find_targets) )
if [[ -n ${targets[@]} ]] ; then
local canonicalised basename
for (( i = 0 ; i < ${#targets[@]} ; i = i + 1 )) ; do
canonicalised=$(canonicalise "${ECJ}")
basename=$(basename "${canonicalised}")
if [[ "${targets[${i}]}" = "${basename}" ]] ; then
targets[${i}]="${targets[${i}]} $(highlight '*')"
fi
done
write_list_start "Available ECJ targets:"
write_numbered_list "${targets[@]}"
else
write_kv_list_entry "(none found)" ""
fi
}
### set action ###
describe_set() {
echo "Set a new ECJ target"
}
describe_set_options() {
echo "target : Target name or number (from 'list' action)"
}
describe_set_parameters() {
echo "<target>"
}
do_set() {
if [[ $# -gt 1 ]]; then
die -q "Too many parameters. Expected only one."
fi
local target=${1}
if [[ -z "${target}" ]] ; then
die -q "You didn't give me a target name or number."
elif [[ -L "${ECJ}" ]] ; then
if ! remove_symlink ; then
die -q "Can't remove existing ecj provider."
elif ! set_symlink "${1}" ; then
die -q "Can't set new ecj provider."
fi
elif [[ -e "${ECJ}" ]] ; then
write_warning_msg "Can't set a new ecj provider. There's a file in the way at ${ECJ}. You can try removing it manually, and then re-running this command."
else
set_symlink "${target}" || die -q "Wasn't able to set a new provider."
fi
}
### update action ###
describe_update() {
echo "Set the ECJ target to the latest if the current target is invalid or if the given target is the latest"
}
describe_update_options() {
echo "target (optional) : Target name (from 'list' action)"
}
describe_update_parameters() {
echo "<target>"
}
do_update() {
if [[ $# -gt 1 ]] ; then
die -q "Too many parameters. Expected only one."
fi
# For pkg_postrm
if [[ ! $(find_targets) ]]; then
remove_symlink
return
fi
local canonicalised=$(canonicalise "${ECJ}")
if [[ ! -L "${ECJ}" ]] || [[ ! -f "${canonicalised}" ]] ; then
do_set 1
elif [[ -n "${1}" ]] ; then
# Check whether target name is valid.
find_target "${1}" > /dev/null
if [[ "${1}" == "$(find_target 1)" ]] ; then
do_set 1
fi
fi
}
# vim: set ft=eselect :
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