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# -*-eselect-*- vim: ft=eselect
# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
DESCRIPTION="Manage the Java system and user VM"
MAINTAINER="java@gentoo.org"
VERSION="@VERSION@"
VM_BASE="${EROOT}/usr/lib/jvm/"
VM_SYSTEM="${EROOT}/etc/java-config-2/current-system-vm"
VM_USER="${HOME}/.gentoo${EPREFIX}/java-config-2/current-user-vm"
VM_CONFIG="${EROOT}/usr/share/java-config-2/vm"
find_targets() {
local TARGETS=() target
for target in "${VM_BASE}"/*; do
[[ -L "${target}" ]] && TARGETS+=( ${target##*/} )
done
printf "%s\n" "${TARGETS[@]}" | sort -uV
}
sym_to_vm() {
basename $(readlink "${1}")
}
### show action ###
describe_show() {
echo "Show the current VM"
}
describe_show_parameters() {
echo "[user|system]"
}
do_show() {
if [[ ${1} == "system" ]]; then
my_show "${VM_SYSTEM}" 'system-vm'
elif [[ ${1} == "user" ]]; then
my_show "${VM_USER}" 'user-vm'
else
my_show "${VM_SYSTEM}" 'system-vm'
my_show "${VM_USER}" 'user-vm'
fi
}
my_show() {
local symlink=${1} vm_type=${2}
write_list_start "Current ${vm_type}"
if [[ -L "${symlink}" ]] ; then
write_kv_list_entry "$(sym_to_vm ${symlink})" ""
else
write_kv_list_entry "(unset)" ""
fi
}
### list action ###
describe_list() {
echo "List Available Virtual Machines"
}
do_list() {
targets=( $(find_targets) )
write_list_start "Available Java Virtual Machines:"
local found_build_only
if [[ -n ${targets[@]} ]] ; then
local i system_name user_name
[[ -L ${VM_SYSTEM} ]] && system_name=$(sym_to_vm "${VM_SYSTEM}")
[[ -L ${VM_USER} ]] && user_name=$(sym_to_vm "${VM_USER}")
for (( i = 0 ; i < ${#targets[@]} ; i = i + 1 )) ; do
local build_only=$(grep 'BUILD_ONLY' "${VM_CONFIG}/${targets[${i}]}" | cut -c 13-16 )
local mark=""
if [[ "${build_only}" == "TRUE" || "{build_only}" == "true" ]]; then
mark="$(highlight_warning 'Build Only')"
found_build_only="TRUE"
fi
if [[ ${targets[${i}]} == ${system_name} ]]; then
mark="${mark} $(highlight 'system-vm')"
fi
if [[ ${targets[${i}]} == ${user_name} ]]; then
mark="${mark} $(highlight 'user-vm' )"
fi
targets[${i}]="${targets[${i}]} ${mark}"
done
write_numbered_list "${targets[@]}"
else
write_kv_list_entry "(none found)" ""
fi
echo
if [[ "${found_build_only}" == "TRUE" ]]; then
write_warning_msg "VMs marked as Build Only may contain Security Vulnerabilities and/or be EOL."
write_warning_msg "Gentoo recommends not setting these VMs as either your System or User VM."
write_warning_msg "Please see https://wiki.gentoo.org/wiki/Java#Build_Only_VM for more information."
fi
}
### set action ###
describe_set() {
echo "Set a new system or user VM"
}
describe_set_options() {
echo "--if-unset : do not change if already set"
}
describe_set_parameters() {
echo "<user|system> <VM>"
}
do_set() {
local usage="Usage <user|system> <VM>"
local ifunset=0
if [[ ${1} == "--if-unset" ]]; then
ifunset=1
shift
fi
if [[ ${#} != 2 ]]; then
die -q ${usage}
elif [[ ${1} == "system" ]]; then
if [[ -w ${VM_SYSTEM%/*} ]]; then
my_set "${VM_SYSTEM}" "${2}" ${ifunset}
else
die -q "Sorry, you don't have enough permission to set system"
fi
elif [[ ${1} == "user" ]]; then
if [[ ${UID} != 0 ]]; then
my_set "${VM_USER}" "${2}" ${ifunset}
else
die -q "Sorry, you cannot set a user VM as root. Set the system VM instead"
fi
else
die -q ${usage}
fi
}
my_set() {
local symlink=${1} target=${2} ifunset=${3}
if [[ -z ${target} ]] ; then
die -q "You didn't tell me what to set the symlink to"
elif [[ -L "${symlink}" ]] ; then
if [[ ${ifunset} == 0 || ! -d ${symlink} ]]; then
set_symlink "${target}" "${symlink}" || die -q "Couldn't set a new symlink"
fi
elif [[ -e ${symlink} ]] ; then
die -q "Target file already exists and is not a symlink: ${symlink}"
else
set_symlink "${target}" "${symlink}" || die -q "Couldn't set a new symlink"
fi
}
set_symlink() {
local target=${1} symlink=${2}
if is_number "${target}" ; then
targets=( $(find_targets) )
target=${targets[$(( ${target} - 1 ))]}
fi
if [[ -z ${target} ]] ; then
die -q "Target \"${1}\" doesn't appear to be valid!"
elif [[ -d ${VM_BASE}/${target} ]] ; then
local sym_dir=${symlink%/*}
mkdir -p "${sym_dir}" || die -q "Could not create ${sym_dir}"
ln -snf "${VM_BASE}/${target}" "${symlink}"
else
die -q "Target \"${1}\" doesn't appear to be valid!"
fi
}
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