NAME

utf8kind - Quick check an offset into a string

SYNOPSIS

state
utf8kind( offset )

DESCRIPTION

Built-in support for internationalized strings is fairly rudimentary, although the render_text class of functions handle UTF 8 internally, no such support has been mapped into the built-in LUA VM . This function is a quick helper to determine if you're about to corrupt a UTF -8 string or not. state values: 0 = 7bit character, 1 = start of char, 2 = middle of char.

NOTES

1: This is very primitive and was added before we included the bitopts- Lua JIT extension into the codebase. It does not directly help for validating UTF 8 sequences, only for avoiding obvious truncation.

EXAMPLE

function utf8kind0()
      a = "åäö";
      for i=1,#a do
            print(utf8kind(a[i]));
      end
end