How to replace string in lua?

Question

My question is how can I replace the character from a given string? If someone says something in the chat, and that word is a bad word then replace it with "****". I don't know how to approach the print section.. Because I've got the index of the badword but I don't know how to replace it from the original message.

local badwords = {
    "badword",
    "badword2",
}

function(msg)
   local message = msg;
   local lowered_msg = message:lower(); 

   for index, val in pairs(badwords) do 
       if lowered_msg:match(val) then
           local indexStart, indexEnd = string.find(lowered_msg, val)
           print(message:gsub(indexStart, "*****", indexEnd))
       end
   end
end

Roniel López · Accepted Answer · 2023-01-05 13:49:40Z

1

The gsub function takes three arguments:

the string to be modified,
the pattern to be replaced,
and the replacement string,

so you need to do something like this:

message = string.gsub(message, message:sub(indexStart, indexEnd), "*****")
print(message)

answered Jan 5, 2023 at 13:49

Roniel López

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Comments

koyaanisqatsi · Accepted Answer · 2023-01-06 16:34:32Z

0

This Way use a table with badwords and replacements for gsub.

local badwords = {fair='f**r', foul='f**l'}
print(('fair is foul and foul is fair'):gsub('%w+', badwords))

...if the pattern matches words.
gsub() loops over the whole string except the 4th argument is used

edited Jan 6, 2023 at 16:34

answered Jan 6, 2023 at 15:36

koyaanisqatsi

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