ASCII Menu in Ruby, is it possible?


#1

Hello Team,

Is there a way in Ruby to create primitive ASCII menus?
At this point I am shying away from GUI as everything outthere, in the
GUI
world is too…
I just want to know if I can create simple menus of the type:

1 - Enter 1 and press Enter to continue
2 - Enter 2 or X and press Enter to exit
3 - Etc.

Thank you


#2

Did you try anything or just jump straight here to ask?

puts “1. Do something here”
puts “2. I want this”
puts “3. Hmm”

x = gets

case x
when “1”

when “2”

when “3”

end

Unless you’re not including enough detail for a proper answer, a quick
jaunt through any Ruby book/tutorial/website would get you at least
this far.

Jason


#3

On 19 Feb 2009, at 19:47, Ruby S. wrote:

3 - Etc.

Thank you

You can find an example of doing this with the termios library by
following the link in my sig and reading the Camping presentation. For
more advanced text-based GUIs you could look at ncurses and highline.

Ellie

Eleanor McHugh
Games With Brains
http://slides.games-with-brains.net

raise ArgumentError unless @reality.responds_to? :reason


#4

Ruby S. wrote:

Thank you

Sure you can.

For example:

def menu
loop do
puts “1. Do something”, “2. Do something else”, “3. Nevermind”

    input = gets.strip

    case input
    when "1"
        puts "Did something"
    when "2"
        puts "Did something else"
    when "3"
        puts "Bye!"
        return
    else
        puts "Invalid option: #{input}"
    end
end

end

menu

-Justin


#5

On Thu, Feb 19, 2009 at 3:04 PM, Justin C.
removed_email_address@domain.invalidwrote:

2 - Enter 2 or X and press Enter to exit
def menu
when “3”
puts “Bye!”
return else puts “Invalid option: #{input}”
end end
end

menu

-Justin

Dear Jason,

YES, I did first performed a google search, which is this:

“ruby” “menu” “ASCII menu”

and the above gave me this:
http://www.google.com/search?hl=en&q="ruby"+"menu"+"ASCII+menu"&start=30&sa=N

As a routine, I religiously perform first a good search. I also traverse
the
gems repository. Then I come to the forum.
That been said, I appreciate your answer and justin answer. I truly
appreciate your help.
It was far from my mind using gets to perform this task.

Again, thank you!


#6

On Feb 19, 2009, at 1:47 PM, Ruby S. wrote:

Is there a way in Ruby to create primitive ASCII menus?
At this point I am shying away from GUI as everything outthere, in
the GUI
world is too…
I just want to know if I can create simple menus of the type:

1 - Enter 1 and press Enter to continue
2 - Enter 2 or X and press Enter to exit
3 - Etc.

Highline can build these menus for you. See examples here:

http://github.com/JEG2/highline/blob/664a1f9d9d7e850d2e72c87ed8594ee910367624/examples/menus.rb

James Edward G. II


#7

If you are planning to do some data entry checking on Linux platforms
you may need to set the STDOUT.sync = true. I am including a simple
program to show you the difference. Indeed on MS Windows you will not
experience any difference if you comment out “STDOUT.sync = true”; on
Linux if buffering is turned on you will!

STDOUT.sync = true

#!/usr/bin/env ruby

STDOUT.sync = true # (cross-platform compatibility issue)

loop do
print “\n\n\tPLEASE SELECT:\n\n”
print “\t\t(1) … enter one number\n”
print "\t\t(2) … enter two numbers "
print “(no seoarators like commas, …)\n”
print “\t\t(Q) … Quit\n\n”
print "\tPlease select one of the above: "
answer = gets
printf “You’ve selected %s\n”, answer

case answer.chomp
when “1”
num = nil
while num !~ /\d+.[^\d]/
print "Please enter a single number: "
num = gets
num.chomp! # note exclamation mark (!)
if num.split(/\s+/).size != 1|| num !~ /\d+/
puts “You should have entered a single number not [#{num}]”
print "Press to continue "
any = gets
else
puts “Thank you for [#{num}].”
end
end
when “2”
num = nil
while num !~ /\d+[\s,]+\d+/
print "Please enter two numbers: "
num = gets
num.chomp! # note exclamation mark (!)
if num.split(/\s+/).size != 2 || num !~ /\d+\s+\d+/
puts “You must enter two numbers number, not [#{num}]”
print "Press to continue "
any = gets
else
puts “Thank you for [#{num}].”
end
end
when /q|Q/
exit
else
print "Illegal selection; Please try again! "
print “Please enter a single number:\n”
print "Press to continue "
any = gets
end
end


#8

On Thu, Feb 19, 2009 at 3:12 PM, Eleanor McHugh <
removed_email_address@domain.invalid> wrote:

2 - Enter 2 or X and press Enter to exit
Ellie

Eleanor McHugh
Games With Brains
http://slides.games-with-brains.net

raise ArgumentError unless @reality.responds_to? :reason

Eleanor,

Thank you for your help. It is highly appreciated!


#9

On Thu, Feb 19, 2009 at 7:03 PM, Igor P. removed_email_address@domain.invalid
wrote:

STDOUT.sync = true # (cross-platform compatibility issue)

   any = gets
 if num.split(/\s+/).size != 2 || num !~ /\d+\s+\d+/

print "Illegal selection; Please try again! "
print “Please enter a single number:\n”
print "Press to continue "
any = gets
end
end


Posted via http://www.ruby-forum.com/.

I truly appreciate the abundance of suggestions from everyone. I will
try
every suggestion and pick one!

Thank you