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# -*-eselect-*- vim: ft=eselect
# Copyright 2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2 or later
# $Id: $
DESCRIPTION="Manage the /usr/bin/gradle symlink"
MAINTAINER=""
VERSION=0.1
# find a list of gradle symlink targets
find_targets() {
local f
for f in "${EROOT}"/usr/bin/gradle?(-bin)-[[:digit:]]*; do
[[ -x ${f} ]] && basename "${f}"
done
}
remove_symlink() {
rm "${EROOT}/usr/bin/gradle" \
|| die -q "Could not remove symlink"
}
set_symlink() {
local target=$1
if is_number "${target}"; then
local targets=( $(find_targets) )
target=${targets[target-1]}
fi
[[ -z ${target} ]] \
&& die -q "Target \"${1}\" doesn't apper to be valid!"
[[ ! -x ${EROOT}/usr/bin/${target} ]] \
&& die -q "${EROOT}/usr/bin/${target} is not an executable"
ln -s "${target}" "${EROOT}/usr/bin/gradle" \
|| die -q "Could not set symlink"
}
describe_show() {
echo "Shows the current gradle symlink"
}
do_show() {
write_list_start "Current gradle symlink:"
if [[ -L ${EROOT}/usr/bin/gradle ]]; then
local gradle=$(cannonicalise "${EROOT}/usr/bin/gradle")
write_kv_list_entry "${gradle}" ""
else
write_kv_list_entry "(unset)" ""
fi
}
describe_list() {
echo "list available gradle symlink targets"
}
do_list() {
local i targets=( $(find_targets) )
write_list_start "Available gradle symlink targets:"
for (( i = 0; i < ${#targets[@]}; i++ )); do
# highligh the target where the symlink is pointing to
[[ ${targets[i]} = \
$(basename "$(canonicalise "${EROOT}/usr/bin/gradle")") ]] \
&& targets[i]=$(highlight_marker "${targets[i]}")
done
write_numbered_list -m "(none found)" "${targets[@]}"
}
describe_set() {
echo "Set a new gradle symlink target"
}
describe_set_parameters() {
echo "<target>"
}
describe_set_options() {
echo "target : Target name or number (from 'list' action)"
}
do_set() {
[[ -z $1 ]] && die -q "You didn't tell me what to set the symlink to"
[[ $# -gt 1 ]] && die -q "Too many parameters"
test_for_root
if [[ -L ${EROOT}/usr/bin/gradle ]]; then
# existing symmlink
remove_symlink
set_symlink "$1"
elif [[ -e ${EROOT}/usr/bin/gradle ]]; then
# we have someting strange
die -q "${EROOT}/usr/bin/gradle exists but is not a symlink"
else
set_symlink "$1"
fi
}
describe_update() {
echo "Automatically update the gradle symlink"
}
describe_update_options() {
echo "ifunset: Do not override currently set version"
}
do_update() {
[[ -z $1 || $1 == ifunset ]] || die -q "Usage error"
[[ $# -gt 1 ]] && die -q "Too many parameters"
test_for_root
if [[ -L ${EROOT}/usr/bin/gradle ]]; then
if [[ $1 == ifunset && -e ${EROOT}/usr/bin/gradle ]]; then
return
fi
remove_symlink
elif [[ -e ${EROOT}/usr/bin/gradle ]]; then
die -q "${EROOT}/usr/bin/gradle exists but is not a symlink"
fi
local targets=( $(find_targets) )
if [[ ${#targets[@]} -gt 0 ]]; then
set_symlink "${targets[${#targets[@]}-1]}"
fi
}
test_for_root() {
[[ -w ${EROOT}/usr/bin ]] || die -q "${EROOT}/usr/bin not writeable by current user. Are you root?"
}
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