shell 命令自动补全模板

示例1

function _xwjh() {
    local cur prev opts

    COMPREPLY=()

    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    # opts="gen init start delete"
    opts="gen init start delete"
    delete_opts="container config data"

    # 添加 init 后的选项
    app_opts="account router console"

    if [[ ${prev} == "init" ]] ; then
        COMPREPLY=( $(compgen -W "${app_opts}" -- ${cur}) )
        return 0
    elif [[ ${prev} == "delete" ]] ; then
        COMPREPLY=( $(compgen -W "${delete_opts}" -- ${cur}) )
        return 0
    elif [[ ${prev} == "" ]] ; then
        COMPREPLY=( $(compgen -W "${delete_opts}" -- ${cur}) )
        return 0
    elif [[ ${cur} == -* ]] ; then
        COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
        return 0
    else
        COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
        return 0
    fi
}

complete -F _xwjh xwjh

示例2

function _custom_completion() {
    local cur prev opts

    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"

    operations=("init" "start" "delete")
    
    objects=("container" "config" "data")

    if [[ ${COMP_CWORD} -eq 1 ]]; then
        COMPREPLY=( $(compgen -W "${operations[*]}" -- ${cur}) )
        return 0
    fi

    if [[ ${COMP_CWORD} -eq 2 ]]; then
        case "${prev}" in
            "init")
                COMPREPLY=( $(compgen -W "config" -- ${cur}) )
                return 0
                ;;
            "start")
                COMPREPLY=( $(compgen -W "container" -- ${cur}) )
                return 0
                ;;
            "delete")
                COMPREPLY=( $(compgen -W "${objects[*]}" -- ${cur}) )
                return 0
                ;;
            *)
                return 0
                ;;
        esac
    fi

    if [[ ${COMP_CWORD} -eq 3 ]]; then
        case "${prev}" in
            "init")
                COMPREPLY=( $(compgen -W "config" -- ${cur}) )
                return 0
                ;;
            "start")
                COMPREPLY=( $(compgen -W "container" -- ${cur}) )
                return 0
                ;;
            "delete")
                case "${COMP_WORDS[1]}" in
                    "init")
                        COMPREPLY=( $(compgen -W "config" -- ${cur}) )
                        return 0
                        ;;
                    "start")
                        COMPREPLY=( $(compgen -W "container" -- ${cur}) )
                        return 0
                        ;;
                    "delete")
                        COMPREPLY=( $(compgen -W "account router console" -- ${cur}) )
                        return 0
                        ;;
                esac
                ;;
            *)
                return 0
                ;;
        esac
    fi
}

complete -F _custom_completion xwjh