Capitalization In Tables?

sirius4d · November 7, 2020, 3:02am

Hey everyone. Let’s say I wanted to make a random password generator using Lua.

If I had a set of characters I wanted to use in the passwords,

local char = {"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "-", "_", "=", "+", "<", ">", "?",}

But I wanted to have both lower case characters and upper case characters, would I have to have the same character twice but for both lower and upper case?

local char = {"a", "A"}

Cristiano100 · November 7, 2020, 3:06am

you can just do a math.random check, if 0 use string.lower, if 1 use string.upper on the character

I’d also recommend just using math.random for this entire thing and converting it from byte code to a string instead of having a table full of letters.

varjoy · November 7, 2020, 3:08am

I wouldn’t do this if you want a random password,
Use GenerateGUID

uhi_o · November 7, 2020, 3:09am

33 - 126

local function CreateCharacters()
    local characters = {}
    for i = 33, 126 do
        table.insert(characters, string.char(i))
    end
    return characters
end

local Characters = CreateCharacters()

Cristiano100 · November 7, 2020, 3:09am

perhaps he wants customizable lengths and he doesn’t want hyphens in his password? he also said that he wanted uppercase letters which UUIDs dont use.

varjoy · November 7, 2020, 3:10am

that’s editable bro…
GenerateGUID can work

varjoy · November 7, 2020, 3:11am

Anyways, why do you want that?
I don’t get it.

Cristiano100 · November 7, 2020, 3:14am

No it’s not. GenerateGUID can only provide a UUID. The parameter allows it to be wrapped in brackets automatically or not. GenerateGUID will not work for his intended use, which is to have a generated password that also has upper and lowercase characters

sirius4d · November 7, 2020, 3:14am

That’s right, customizable lengths would preferable.

Does ‘GenerateGUID’ only have an output something like this?
{04AEBFEA-87FC-480F-A98B-E5E221007A90}

I’m assuming it does.

dollychun · November 7, 2020, 3:21am

gist.github.com

https://gist.github.com/haggen/2fd643ea9a261fea2094

string.random.lua

math.randomseed(os.time())

local charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"

function string.random(length)
  if length > 0 then
    return string.random(length - 1) .. charset:sub(math.random(1, #charset), 1)
  else
    return ""
  end

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Cristiano100 · November 7, 2020, 3:19pm

yeah, there’s no customizability