104 lines
2.6 KiB
Bash
104 lines
2.6 KiB
Bash
# vi: set filetype=sh:
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# $__library/manifest
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#
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# 2020 Matthias Stecher (matthiasstecher at gmx.de)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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# This library contains:
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# common helper functions helping writing the manifest
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# check if type is a singleton
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#
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# Arguments:
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# 1: name of the type, e.g. `__some_type`
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is_singleton() {
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if [ -f "$__global/conf/type/$1/singleton" ]; then
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return 0
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else
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return 1
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fi
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}
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# print object id
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#
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# Arguments:
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# 1: type name, e.g. `__some_type`
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# 2: object id; will be ignored if type is a singleton
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get_object_id() {
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if is_singleton "$1"; then
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printf "%s" "$1"
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else
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printf "%s/%s" "$1" "$2"
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fi
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}
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# Helper function to get the correct chain name. It will shorten any
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# invalid character.
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#
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# Arguments:
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# 1: the dependency chain name
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_rec_normalize_chain_name() {
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# spaces will be underscores
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# anything other than a-zA-Z0-9 will be removed
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printf "$1" | sed 's/\([[:space:]]\|-\)/_/g; s/[^a-zA-Z0-9_]//g'
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}
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# Recording dependencies
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#
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# Arguments:
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# 1: the dependency chain - only chars, numbers and underscores allowed
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# 2..n: the type command; no more nesting possible
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rec_requires() {
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# make it ready to be passed to eval
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_rec_chain="$(_rec_normalize_chain_name "$1")"
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eval "_rec_ch_${_rec_chain}=\"\${_rec_ch_${_rec_chain}:-} $(get_object_id "$2" "$3")\""
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# execute type
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shift
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"$@"
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}
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# Clearing dependency chains
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#
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# Arguments:
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# 1: the dependency chain name
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rec_clear() {
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_rec_chain="$(printf "$1" | sed 's/\([[:space:]]\|-\)/_/g; s/[^a-zA-Z0-9_]//g')"
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eval "unset -v _rec_ch_${_rec_chain}"
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}
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# Export dependencies to current command by appending to the current environment
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#
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# Arguments:
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# 1: the dependency chain
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# 2..n: the type command; no more nesting possible
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depend() {
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# assemble dependency
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_rec_chain="$(_rec_normalize_chain_name "$1")"
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_rec_deps="$(eval "printf \"%s\" \"\${_rec_ch_${_rec_chain}:-}\"")"
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# execute type
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shift
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require="$require $_rec_deps" "$@"
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}
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