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50 lines
1.0 KiB
50 lines
1.0 KiB
7 years ago
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#!/bin/bash
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set -e;
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declare -a commands
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declare -a actions
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declare -a hints
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declare -a functions
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function register(){
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commands+=("$1")
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actions+=("$2")
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hints+=("$3")
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functions+=("$4")
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}
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function help(){
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printf 'Usage: %s [command] [action] [options]\n\n' ${0}
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for (( i = 0; i < ${#commands[@]}; ++i )); do
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echo -e " ${commands[$i]}\t${actions[$i]}\t ${hints[$i]}"
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done | column -ts $'\t'
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echo
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}
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function cli(){
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cmd="${1}"; shift || true
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action="${1}"; shift || true
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valid_command=false
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valid_action=false
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for (( i = 0; i < ${#commands[@]}; ++i )); do
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if [ "${cmd}" = "${commands[$i]}" ]; then
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valid_command=true
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if [ "${action}" = "${actions[$i]}" ]; then
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valid_action=true
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"${functions[$i]}" "$@"
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exit $?
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fi
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fi
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done
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echo
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[ -z "${cmd}" ] || [ "$valid_command" = true ] || printf 'invalid command "%s"\n\n' "${cmd}"
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[ -z "${action}" ] || [ "$valid_action" = true ] || printf 'invalid action "%s"\n\n' "${action}"
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help
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exit 1
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}
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