Cyrillic letters blocker

[GurraGo]

Hello, I'm playing at a [Open Aura] HL2RP server, and it seems like too many Cyrillic (Russian) letters makes the server extremely laggy. So I wounder if it's any way I can block people from using Cyrillic letters in the chat?

Thank you in advance
Gurrazor

[Zephilinox]

I hardly ever touch strings, but maybe this?

[lua]
hook.Add ( "PlayerSay", "Cyrillic", function ( ply, text, publicchat )
local bannedletters = { a, b, z, c }
for k, v in pairs ( bannedletters ) do
if string.find(string.lower( text ), v ) >= 0 then return ""
end
end
end)
[/lua]

[PortalGod]

[lua]
string.gsub("Herp derp text", "[^%w%p%s]", "")
[/lua]

That will give you a string that has all non-AlphaNumeric characters removed.

[Zephilinox]

[QUOTE=PortalGod;26491110][lua]
string.gsub("Herp derp text", "[^%w%p%s]", "")
[/lua]

That will give you a string that has all non-AlphaNumeric characters removed.[/QUOTE]

with that, it should look like this

[lua]
hook.Add ( "PlayerSay", "Cyrillic", function ( ply, text, publicchat )
local newtext = string.gsub( text , "[^%w%p%s]", "")
if text != newtext then return newtext
end
end)
[/lua]

[PortalGod]

That if statement is unnecessary, just return the string after you use gsub on it. If none of the text got filtered, it will return the original text.

[Zephilinox]

[QUOTE=PortalGod;26491671]That if statement is unnecessary, just return the string after you use gsub on it. If none of the text got filtered, it will return the original text.[/QUOTE]

from the wiki

[QUOTE]Returning the text, even the original text, will stop this from being called in any other hooks. [b]If you're not changing the text, then you don't return anything.[/b] [/QUOTE]

the if statement is just so that it doesn't return an unchanged text.

[PortalGod]

Oh, my bad. In that case, gsub returns a second argument of the number of characters changed, you can use that as well.

[GurraGo]

Thank you a lot guys, but where should I put the lua file? lua/autorun/server?

[GurraGo]

I got access to the server FTP, and I'm supposed to upload it.

[Zephilinox]

Yeah, put it in lua/autorun/server.

[Kogitsune]

[QUOTE=PortalGod;26491110][lua]
string.gsub("Herp derp text", "[^%w%p%s]", "")
[/lua]

That will give you a string that has all non-AlphaNumeric characters removed.[/QUOTE]

[%W%P%S]

Using a capital letter version of a case inverts it.

[PortalGod]

I know, but using a caret does the same thing, and I think it's less confusing.