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Filename : update-java-alternatives
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#
# update-java-alternatives(8) completion
#

#
# List the available alternatives
#
_update-java-alternatives_list()
{
    shopt -s dotglob

    top=/usr/lib/jvm
    for i in ${jinfo:-$top/*.jinfo}; do
        alias=$(basename ${i%.jinfo})
        alias=${alias#.}
        echo $alias
    done
}

_update-java-alternatives()
{
    local cur prev options

    cur=`_get_cword`
    prev=${COMP_WORDS[COMP_CWORD-1]}

    options=()

    # complete but doesn't display the short options
    if [[ $cur == "-s" || $cur == "-l" || $cur == "-a" || $cur == "-h" || $cur == "-v" ]] ; then
        COMPREPLY=( $( compgen -W '$cur' -- $cur ) )
        return 0
    fi

    # suggest an action if none was specified yet
    if [[ ! "${COMP_WORDS[@]}" =~ " --set " ]]  && [[ ! "${COMP_WORDS[@]}" =~ " -s " ]] && [[
          ! "${COMP_WORDS[@]}" =~ " --list " ]] && [[ ! "${COMP_WORDS[@]}" =~ " -l " ]] && [[
          ! "${COMP_WORDS[@]}" =~ " --auto " ]] && [[ ! "${COMP_WORDS[@]}" =~ " -a " ]] && [[
          ! "${COMP_WORDS[@]}" =~ " --help " ]] && [[ ! "${COMP_WORDS[@]}" =~ " -h " ]]; then
        options+=( --help --list --auto --set )
    fi

    # add the --set sub options
    if [[ " ${COMP_WORDS[@]} " =~ " --set " ]] || [[ " ${COMP_WORDS[@]} " =~ " -s " ]]; then
        if [[ ! "${COMP_WORDS[@]}" =~ " --verbose " ]] && [[ ! " ${COMP_WORDS[@]} " =~ " -v " ]]; then options+=("--verbose"); fi
        if [[ ! "${COMP_WORDS[@]}" =~ " --plugin " ]]; then options+=("--plugin"); fi
        if [[ ! "${COMP_WORDS[@]}" =~ " --jre " ]]; then options+=("--jre"); fi
        if [[ ! "${COMP_WORDS[@]}" =~ " --jre-headless " ]]; then options+=("--jre-headless"); fi
    fi

    case "$prev" in
        -s|--set|-l|--list)
            COMPREPLY=( $( compgen -W '$(_update-java-alternatives_list)' -- $cur ) )
            ;;
        -h|--help)
            COMPREPLY=( )
            ;;
        *)
            COMPREPLY=( $( compgen -W '${options[@]}' -- $cur ) )
            ;;
    esac

    return 0
} &&
complete -F _update-java-alternatives update-java-alternatives