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Full Discussion: Dynamic Bash Dialog from directory listing
Top Forums Shell Programming and Scripting Dynamic Bash Dialog from directory listing Post 303021054 by shrout1 on Friday 3rd of August 2018 09:05:56 AM
Old 08-03-2018
Corona688 and RudiC - thank you both so much for your time; cannot tell you how much I appreciate it. After wrestling with this for a while I am grateful that someone would be willing to lend me some assistance. So thank you thank you!!

Quote:
Originally Posted by RudiC
How far would
Code:
IFS=$'\n'
for FN in *; do [ -f $FN ] && { read LN < $FN; TMP=$TMP$'\n'"$FN $LN"; }; done
PS3="Choose a package for installation:"
select CHC in $TMP; do echo $CHC; done

get you?
RudiC: I am *really* green to this, and unix terminal is not at all my forte. A couple of questions:

1) Where is the directory listing occurring in this script? I'm guessing it's at `[ -f $FN ]`
2) Can I pass an argument into this? Traditionally I've used $1, $2 etc. but I'm not intimately familiar with bash.

Quote:
Originally Posted by Corona688
You don't have to append each item to an array individually. And bash has a built in menu system.

Code:
# Split only on newlines
OLDIFS="$IFS"
IFS=$'\n'

# Store listing in array
array=( $(find "$1" -type f) )

IFS="$OLDIFS" # Return to normal splitting behavior

# Make a dialog of choices
select X in "${array[@]}"
do
        # In this loop, X will be set to the file selected
        break
done

Corona688: Thank you for the find syntax! I had completely forgotten the `type -f` argument for `find` :P Man pages for the win (Windows has broken my brain I think lol).

The simplicity of the "select" command is fantastic, and it may be the route I end up taking. I was hoping to use the Bash Dialog interface for consistency as I won't be the end user of this software. Currently I have a master menu (built statically) with common tasks. I am attempting to build this installer as a "sub" menu, or basically a bash script that gets invoked through one of the options in the main menu. A sudden change in the look & feel could confuse some users; they aren't the type that know anything about bash, linux or really much about software. Surge support we'll say.

I have the Tiny Core ncurses extensions remastered into my core file and would like to be able to use them.

But again, I appreciate all the help thus far! If an ncurses dialog is a no go then I'll give up on it. I just figured that it had to be possible...

Also, Python has been suggested but I need to keep the footprint of my OS as small as possible. My initrd is currently sitting around 13mb, compressed.
 

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LEARN ABOUT DEBIAN

item_value

menu_value(3MENU)														 menu_value(3MENU)

NAME

       mitem_value - set and get menu item values

SYNOPSIS

       #include <menu.h>
       int set_item_value(ITEM *item, bool value);
       bool item_value(const ITEM *item);

DESCRIPTION

       If  you	turn  off  the menu option O_ONEVALUE (e.g., with set_menu_opts or menu_opts_off; see opts(3MENU)), the menu becomes multi-valued;
       that is, more than one item may simultaneously be selected.

       In a multi_valued menu, you can used set_item_value to select the given menu item (second argument TRUE) or deselect  it  (second  argument
       FALSE).

RETURN VALUE

       The function set_item_value returns one of the following:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
	    System error occurred (see errno).

       E_REQUEST_DENIED
	    The menu driver could not process the request.

SEE ALSO

       ncurses(3NCURSES), menu(3MENU).

NOTES

       The header file <menu.h> automatically includes the header file <curses.h>.

PORTABILITY

       These routines emulate the System V menu library.  They were not supported on Version 7 or BSD versions.

AUTHORS

       Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S. Raymond.

																 menu_value(3MENU)
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