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# -*-eselect-*- vim: ft=eselect
# Copyright (c) 2005-2020 Gentoo Authors
#
# This file is part of the 'eselect' tools framework.
#
# eselect is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation, either version 2 of the License, or (at your option) any later
# version.
#
# eselect is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# eselect. If not, see <http://www.gnu.org/licenses/>.
# check_do function args
# Check that function exists, and call it with args.
check_do() {
local function=$1
shift
if is_function "${function}" ; then
${function} "$@"
else
die "No function ${function}"
fi
}
# die [-q] "Message" PUBLIC
# Display "Message" as an error. If -q is not provided, gives a stacktrace.
die() {
local item funcname="" sourcefile="" lineno="" n e s="yes"
# Restore stderr
[[ -n ${ESELECT_STDERR} ]] && exec 2>&${ESELECT_STDERR}
# do we have a working write_error_msg?
if is_function "write_error_msg"; then
e="write_error_msg"
else
e="echo"
fi
# quiet?
if [[ $1 == "-q" ]]; then
s=""
shift
fi
$e "${@:-(no message)}" >&2
if [[ -n ${s} ]]; then
echo "Call stack:" >&2
for (( n = 1; n < ${#FUNCNAME[@]}; ++n )); do
funcname=${FUNCNAME[n]}
sourcefile=$(basename ${BASH_SOURCE[n]})
lineno=${BASH_LINENO[n-1]}
echo " * ${funcname} (${sourcefile}:${lineno})" >&2
done
fi
# Evil, but effective.
kill ${ESELECT_KILL_TARGET}
exit 249
}
# find_module module PRIVATE
# Find module and echo its filename. Die if module doesn't exist.
find_module() {
local modname=$1 modpath
for modpath in "${ESELECT_MODULES_PATH[@]}"; do
if [[ -f ${modpath}/${modname}.eselect ]]; then
echo "${modpath}/${modname}.eselect"
return
fi
done
die -q "Can't load module ${modname}"
}
# do_action action args...
# Load and do 'action' with the specified args
do_action() {
local action="${1##--}" modfile="" subaction="${2##--}"
[[ -z ${action} ]] && die "Usage: do_action <action> <args>"
shift; shift
ESELECT_MODULE_NAME="${action}"
ESELECT_COMMAND="${ESELECT_PROGRAM_NAME} ${ESELECT_MODULE_NAME}"
[[ ${ESELECT_BINARY_NAME##*/} != "${ESELECT_PROGRAM_NAME}" ]] \
&& ESELECT_COMMAND="${ESELECT_BINARY_NAME##*/}"
modfile=$(find_module "${action}")
(
source "$ESELECT_DEFAULT_ACTIONS" 2>/dev/null \
|| die "Couldn't source ${ESELECT_DEFAULT_ACTIONS}"
source "${modfile}" 2>/dev/null \
|| die "Couldn't source ${modfile}"
if [[ -z ${subaction} ]]; then
check_do "do_${DEFAULT_ACTION:-usage}" "$@"
else
is_function "do_${subaction}" \
|| die -q "Action ${subaction} unknown"
check_do "do_${subaction}" "$@"
fi
)
}
# inherit module PUBLIC
# Sources a given eselect library file
inherit() {
local x
for x; do
[[ -e ${ESELECT_CORE_PATH}/${x}.bash ]] \
|| die "Couldn't find ${x}.bash"
source "${ESELECT_CORE_PATH}/${x}.bash" \
|| die "Couldn't source ${x}.bash"
done
}
# make eval not work, because it's evil
eval() {
die "Don't use eval. Find another way."
}
# GNU sed wrapper (sed or gsed, as determined by configure)
sed() {
command @SED@ "$@"
}
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