bash-completion.sh
author František Kučera <franta-hg@frantovo.cz>
Sun, 05 Jun 2022 22:51:45 +0200
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parse connection string, credentials, check return values
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# Relational pipes
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# Copyright © 2022 František Kučera (Frantovo.cz, GlobalCode.info)
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#
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# This program 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, version 3 of the License.
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#
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# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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_relpipe_in_mqtt_completion() {
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	local w0 w1 w2 w3
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	COMPREPLY=()
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	w0=${COMP_WORDS[COMP_CWORD]}
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	w1=${COMP_WORDS[COMP_CWORD-1]}
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	w2=${COMP_WORDS[COMP_CWORD-2]}
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	w3=${COMP_WORDS[COMP_CWORD-3]}
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	CONNECTION_OPTIONS=(
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		"username"
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		"password"
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	)
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	if   [[ "$w1" == "--relation"                      && "x$w0" == "x" ]];    then COMPREPLY=("''")
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	elif [[ "$w1" == "--connection-string"             && "x$w0" == "x" ]];    then COMPREPLY=("'mqtt://localhost:1883'")
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	elif [[ "$w1" == "--connection-option"                              ]];    then COMPREPLY=($(compgen -W "${CONNECTION_OPTIONS[*]}" -- "$w0"))
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	elif [[ "$w2" == "--connection-option"             && "x$w0" == "x" ]];    then COMPREPLY=("''")
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	elif [[ "$w1" == "--stream"                        && "x$w0" == "x" ]];    then COMPREPLY=("''")
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	elif [[ "$w1" == "--message-count"                 && "x$w0" == "x" ]];    then COMPREPLY=("1")
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	else
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		OPTIONS=(
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			"--relation"
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			#"--connection-name"
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			"--connection-string"
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			"--connection-option"
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			"--stream"
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			"--message-count"
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		)
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		COMPREPLY=($(compgen -W "${OPTIONS[*]}" -- "$w0"))
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	fi
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}
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complete -F _relpipe_in_mqtt_completion relpipe-in-mqtt