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# cvs(1) completion

have cvs && {
set_prefix()
{
    [ -z ${prefix:-} ] || prefix=${cur%/*}/
    [ -r ${prefix:-}CVS/Entries ] || prefix=""
}

get_entries()
{
    local IFS=$'\n'
    [ -r ${prefix:-}CVS/Entries ] && \
    entries=$(cut -d/ -f2 -s ${prefix:-}CVS/Entries)
}

get_modules()
{
    if [ -n "$prefix" ]; then
        COMPREPLY=( $( command ls -d ${cvsroot}/${prefix}/!(CVSROOT) ) )
    else
        COMPREPLY=( $( command ls -d ${cvsroot}/!(CVSROOT) ) )
    fi
}

_cvs_commands()
{
    cvs --help-commands 2>&1 | awk '/^(     *|\t)/ { print $1 }'
}

_cvs_options()
{
    cvs --help-options 2>&1 | awk '/^(     *|\t)-/ { print $1 }'
}

_cvs_command_options()
{
    cvs --help $1 2>&1 | sed -ne 's/^[[:space:]]*\(-[^[:space:]=[]*\).*/\1/p'
}

_cvs_kflags()
{
    COMPREPLY=( $( compgen -W 'kv kvl k o b v' -- "$cur" ) )
}

_cvs_roots()
{
    local -a cvsroots
    cvsroots=( $CVSROOT )
    [ -r ~/.cvspass ] && \
        cvsroots=( "${cvsroots[@]}" $( awk '{ print $2 }' ~/.cvspass ) )
    [ -r CVS/Root ] && cvsroots=( "${cvsroots[@]}" $(cat CVS/Root) )
    COMPREPLY=( $( compgen -W '${cvsroots[@]}' -- "$cur" ) )
    __ltrim_colon_completions "$cur"
}

_cvs()
{
    local cur prev count mode i cvsroot cvsroots pwd
    local -a flags miss files entries changed newremoved

    COMPREPLY=()
    _get_comp_words_by_ref -n : cur prev

    count=0
    for i in "${COMP_WORDS[@]}"; do
        [ $count -eq $COMP_CWORD ] && break
        # Last parameter was the CVSROOT, now go back to mode selection
        if [[ "${COMP_WORDS[((count))]}" == "$cvsroot" && "$mode" == cvsroot ]]; then
            mode=""
        fi
        if [ -z "$mode" ]; then
            case $i in
                -H|--help)
                    COMPREPLY=( $( compgen -W "$( _cvs_commands )" -- "$cur" ) )
                    return 0
                    ;;
                -d)
                    mode=cvsroot
                    cvsroot=${COMP_WORDS[((count+1))]}
                    ;;
                ad|add|new)
                    mode=add
                    ;;
                adm|admin|rcs)
                    mode=admin
                    ;;
                ann|annotate)
                    mode=annotate
                    ;;
                checkout|co|get)
                    mode=checkout
                    ;;
                com|commit|ci)
                    mode=commit
                    ;;
                di|dif|diff)
                    mode=diff
                    ;;
                ex|exp|export)
                    mode=export
                    ;;
                edit|unedit)
                    mode=$i
                    ;;
                hi|his|history)
                    mode=history
                    ;;
                im|imp|import)
                    mode=import
                    ;;
                re|rel|release)
                    mode=release
                    ;;
                log|rlog)
                    mode=log
                    ;;
                rdiff|patch)
                    mode=rdiff
                    ;;
                remove|rm|delete)
                    mode=remove
                    ;;
                rtag|rfreeze)
                    mode=rtag
                    ;;
                st|stat|status)
                    mode=status
                    ;;
                tag|freeze)
                    mode=tag
                    ;;
                up|upd|update)
                    mode=update
                    ;;
            esac
        elif [[ "$i" = -* ]]; then
            flags=( "${flags[@]}" $i )
        fi
        count=$((++count))
    done

    case $mode in
        add)
            case $prev in
                -m)
                    return 0
                    ;;
                -k)
                    _cvs_kflags
                    return 0
                    ;;
            esac

            if [[ "$cur" != -* ]]; then
                set_prefix
                if [[ $COMP_CWORD -gt 1 && -r ${prefix:-}CVS/Entries ]]; then
                    get_entries
                    [ -z "$cur" ] && \
                    files=$( command ls -Ad !(CVS) ) || \
                    files=$( command ls -d ${cur}* 2>/dev/null )
                    for i in "${entries[@]}"; do
                        files=( ${files[@]/#$i//} )
                    done
                    COMPREPLY=( $( compgen -X '*~' -W '${files[@]}' -- $cur ) )
                fi
            else
                COMPREPLY=( $( compgen -W "$( _cvs_command_options $mode )" \
                    -- "$cur" ) )
            fi
            ;;
        admin)
            case $prev in
                -a|-A|-b|-c|-e|-l|-m|-n|-N|-o|-s|-t-|-u)
                    return 0
                    ;;
                -t)
                    _filedir
                    return 0
                    ;;
                -k)
                    _cvs_kflags
                    return 0
                    ;;
            esac

            if [[ "$cur" = -* ]]; then
                COMPREPLY=( $( compgen -W "$( _cvs_command_options $mode )" \
                    -- "$cur" ) )
            fi
            ;;
        annotate)
            [[ "$prev" == -@(r|D) ]] && return 0

            if [[ "$cur" = -* ]]; then
                COMPREPLY=( $( compgen -W "$( _cvs_command_options $mode )" \
                    -- "$cur" ) )
            else
                get_entries
                COMPREPLY=( $( compgen -W '${entries[@]}' -- "$cur" ) )
            fi
            ;;
        checkout)
            case $prev in
                -r|-D|j)
                    return 0
                    ;;
                -d)
                    _filedir -d
                    return 0
                    ;;
                -k)
                    _cvs_kflags
                    return 0
                    ;;
            esac

            if [[ "$cur" != -* ]]; then
                [ -z "$cvsroot" ] && cvsroot=$CVSROOT
                COMPREPLY=( $( cvs -d "$cvsroot" co -c 2> /dev/null | \
                    awk '{print $1}' ) )
                COMPREPLY=( $( compgen -W '${COMPREPLY[@]}' -- "$cur" ) )
            else
                COMPREPLY=( $( compgen -W "$( _cvs_command_options $mode )" \
                    -- "$cur" ) )
            fi
            ;;
        commit)
            case $prev in
                -m|-r)
                    return 0
                    ;;
                -F)
                    _filedir
                    return 0
                    ;;
            esac

            set_prefix

            if [[ "$cur" != -* && -r ${prefix:-}CVS/Entries ]]; then
                # if $COMP_CVS_REMOTE is not null, 'cvs commit' will
                # complete on remotely checked-out files (requires
                # passwordless access to the remote repository
                if [ -n "${COMP_CVS_REMOTE:-}" ]; then
                    # this is the least computationally intensive
                # way found so far, but other changes
                # (something other than changed/removed/new)
                # may be missing
                changed=( $( cvs -q diff --brief 2>&1 | \
                sed -ne 's/^Files [^ ]* and \([^ ]*\) differ$/\1/p' ) )
                newremoved=( $( cvs -q diff --brief 2>&1 | \
                sed -ne 's/^cvs diff: \([^ ]*\) .*, no comparison available$/\1/p' ) )
                COMPREPLY=( $( compgen -W '${changed[@]:-} \
                           ${newremoved[@]:-}' -- "$cur" ) )
                else
                    COMPREPLY=( $(compgen -o default -- "$cur") )
                fi
            else
                COMPREPLY=( $( compgen -W "$( _cvs_command_options $mode )" \
                    -- "$cur" ) )
            fi
            ;;
        cvsroot)
            # TODO: works poorly because of the colons and -o default,
            #       could we drop -o default?  works ok without it in cvsps
            _cvs_roots
            ;;
        export)
            case $prev in
                -r|-D)
                    return 0
                    ;;
                -d)
                    _filedir -d
                    return 0
                    ;;
                -k)
                    _cvs_kflags
                    return 0
                    ;;
            esac

            if [[ "$cur" != -* ]]; then
                [ -z "$cvsroot" ] && cvsroot=$CVSROOT
                COMPREPLY=( $( cvs -d "$cvsroot" co -c | awk '{print $1}' ) )
                COMPREPLY=( $( compgen -W '${COMPREPLY[@]}' -- "$cur" ) )
            else
                COMPREPLY=( $( compgen -W "$( _cvs_command_options $mode )" \
                    -- "$cur" ) )
            fi
            ;;
        diff)
            if [[ "$cur" == -* ]]; then
                _longopt diff
            else
                get_entries
                COMPREPLY=( $( compgen -W '${entries[@]:-}' -- "$cur" ) )
            fi
            ;;
        remove)
            if [[ "$cur" != -* ]]; then
                set_prefix
                if [[ $COMP_CWORD -gt 1 && -r ${prefix:-}CVS/Entries ]]; then
                    get_entries
                    # find out what files are missing
                    for i in "${entries[@]}"; do
                        [ ! -r "$i" ] && miss=( "${miss[@]}" $i )
                    done
                    COMPREPLY=( $(compgen -W '${miss[@]:-}' -- "$cur") )
                fi
            else
                COMPREPLY=( $( compgen -W "$( _cvs_command_options $mode )" \
                    -- "$cur" ) )
            fi
            ;;
        import)
            case $prev in
                -I|-b|-m|-W)
                    return 0
                    ;;
                -k)
                    _cvs_kflags
                    return 0
                    ;;
            esac

            if [[ "$cur" != -* ]]; then
                # starts with same algorithm as checkout
                [ -z "$cvsroot" ] && cvsroot=$CVSROOT
                prefix=${cur%/*}
                if [ -r ${cvsroot}/${prefix} ]; then
                    get_modules
                    COMPREPLY=( ${COMPREPLY[@]#$cvsroot} )
                    COMPREPLY=( ${COMPREPLY[@]#\/} )
                fi
                pwd=$( pwd )
                pwd=${pwd##*/}
                COMPREPLY=( $( compgen -W '${COMPREPLY[@]} $pwd' -- $cur ) )
            else
                COMPREPLY=( $( compgen -W "$( _cvs_command_options $mode )" \
                    -- "$cur" ) )
            fi
            ;;
        update)
            case $prev in
                -r|-D|-j|-I|-W)
                    return 0
                    ;;
                -k)
                    _cvs_kflags
                    return 0
                    ;;
            esac

            if [[ "$cur" = -* ]]; then
                COMPREPLY=( $( compgen -W "$( _cvs_command_options $mode )" \
                    -- "$cur" ) )
            fi
            ;;
        "")
            case $prev in
                -T)
                    _filedir -d
                    return 0
                    ;;
                -e|-s)
                    return 0
                    ;;
                -z)
                    COMPREPLY=( $( compgen -W '1 2 3 4 5 6 7 8 9' -- "$cur" ) )
                    return 0
                    ;;
            esac

            COMPREPLY=( $( compgen -W '$( _cvs_commands ) $( _cvs_options ) \
                --help --help-commands --help-options --version' -- "$cur" ) )
            ;;
    esac

    return 0
}
complete -F _cvs -o default cvs
}

# Local variables:
# mode: shell-script
# sh-basic-offset: 4
# sh-indent-comment: t
# indent-tabs-mode: nil
# End:
# ex: ts=4 sw=4 et filetype=sh