I come from a JS background and I am pretty new to lua and terminals, i have a basic terminal application. I wanted to understand how you would go about implementing let's say a progress bar that runs in a nonblocking way, right now the progress bar runs but you cannot do any tasks or add an input while the progress bar runs, I have been trying to implement it but i am honestly just confused, I wanted a functionality like this:
[==============]40%
press 'q' to go back
You can switch between the menu while the progress bar runs.
Here's the code for the main application and the progress bar ui file :
main.lua
local sys = require("system")
local UI = require("ui")
local copas = require("copas")
function displayMenu()
print("=============")
print("1. Check Time")
print("2. Get Mono Time")
print("3. Give Feedback")
print("4. Progress Bar Demo")
print("6. Exit")
print("=============")
end
function sleep()
local input = io.read()
local gotInput = sys.readkey(input)
print(gotInput)
end
function getTime()
local time = sys.gettime()
local date = os.date("Current Time: %Y-%m-%d %H:%M:%S", time)
print(date)
end
function monoTime()
local response = sys.monotime()
print(response)
end
function UI.prompt(message)
print(message .. " (yes/no):")
local response = io.read()
if response == "yes" then
return true
else return false end
end
function uiPrompt()
local response = UI.prompt("Do you like lua?")
if response == true then
print("Thats great!")
else
print("So sad to hear :(")
end
end
while true do
displayMenu()
io.write("Select an Option: ")
local choice = tonumber(io.read())
if choice == 1 then
getTime()
elseif choice == 2 then
monoTime()
elseif choice == 3 then
uiPrompt()
elseif choice == 4 then
copas.addthread(
function ()
local total = 100
for i=1, total do
UI.progressBar(i, total)
copas.pause(0.1)
end
print()
end)
elseif choice==6 then
break
end
end
copas.loop()
ui.lua
UI={}
function UI.progressBar(current, total)
local widthOfBar = 50
local progress = math.floor((current / total) * widthOfBar)
local remaining = widthOfBar - progress
local bar = "[" .. string.rep("=", progress) .. string.rep(" ", remaining) .. "]"
io.write("\r" .. bar .. math.floor((current / total) * 100) .. "%") -- carriage return for progress bar to stay on the same line
io.flush()
end
copas.loop()
return UI
If anyone could explain and point out what i am doing wrong that would be great. One more thing, are there other better libraries for handling non-block functions Thanks!