fpf

#!/bin/sh
CMD_NAME=`basename $0`
VERSION=0.1.0
usage() {
    cat <<- HELPEND
	"pkg" wrapper command with fzf

	USAGE:
	    $CMD_NAME [-l] [-niIRv] [package-name]
    
	OPTIONS:
	    [source]
	        -l  if set '-l', search installed local packages
	            if not set, search from all packages
	    [action]
	        -n  print name of selected packages
	        -i  print info of selected packages
	        -I  install selected packages
	        -R  remove selected packages
	        -v  print this command version

HELPEND
}

# analyze options & parameters
PKG_LIST_CMD_ALL="pkg search -x"
PKG_LIST_CMD_INSTALLED="pkg info -x -I"
PKG_INFO_CMD="pkg search -f"
action=
while getopts :ilnvIR option
do
    case $option in
        n | i | I | R )
            action=$option
            ;;
        l )
            list_cmd="$PKG_LIST_CMD_INSTALLED"
            ;;
        v )
            echo version: $VERSION && exit 0
            ;;
        \? )
            usage && exit 1
            ;;
    esac
done
shift `expr "$OPTIND" - 1`

# set list command
[ "$action" = "I" ] && list_cmd=$PKG_LIST_CMD_ALL
[ "$action" = "R" ] && list_cmd=$PKG_LIST_CMD_INSTALLED
list_cmd=${list_cmd-$PKG_LIST_CMD_ALL}

# set search query
pkg_name=${1-"."}
search_query=

#echo "act: $action"
#echo "list: $list_cmd"
#echo "pkg: $pkg_name"
#echo "query: $search_query"

# select packages with fzf
PKG_NAME_PICK_PATTERN="s/^\\([^ ]*\\).*/\\1/"
selected_pkgs=`$list_cmd $pkg_name          \
    | fzf -m -q "$search_query"             \
        --preview "echo {}                  \
            | sed '$PKG_NAME_PICK_PATTERN'  \
            | xargs $PKG_INFO_CMD"          \
        --preview-window right:wrap         \
        --bind '?:toggle-preview'           \
    | sed -e "$PKG_NAME_PICK_PATTERN"`

# cancelled?
[ -z "$selected_pkgs" ] && exit 0

# select action
prompt () {
    [ "`echo -n`" = "-n" ] && echo "$@\c" || echo -n "$@"
}

while [ -z "$action" ]
do
    echo ""
    echo "# Selected packages"
    echo "-------------------------------------------"
    echo $selected_pkgs | tr ' ' '\n'

    echo ""
    echo "# Please select action"
    echo "-------------------------------------------"
    echo " n : print name of selected packages"
    echo " i : print info of selected packages"
    echo " I : install selected packages"
    echo " R : remove selected packages"
    echo " q : quit"
    echo "-------------------------------------------"
    prompt "> "
    read action
    case $action in
        n | i | I | R )
            break
            ;;
        q )
            exit 0
            ;;
        * )
            echo "[ERROR] unknown action: $action"
            action=
            ;;
    esac
done > /dev/stderr

# do action
case $action in
    n )
        echo $selected_pkgs | tr ' ' '\n'
        ;;
    i )
        echo $selected_pkgs | tr ' ' '\n' | xargs -L 1 $list_cmd -f
        ;;
    I )
        set -x
        sudo pkg install $selected_pkgs
        ;;
    R )
        set -x
        sudo pkg remove $selected_pkgs
        ;;
    * )
        echo "ERR: unknown action!"
        goto :SELECT_ACTION
        ;;
esac