toCString - how to get it's length

BlitzMax Forums/BlitzMax Beginners Area/toCString - how to get it's length

Rozek

(Posted 2007) [#1]

Just another small question:

<string>.ToCString:byte ptr() converts a BlitzMax (Unicode) string into a (0-terminated) "C" string - I don't ask how this is done, although that would be interesting as well (UTF-8? just ignoring the high byte?)

What I would like to know is how I can get the length of the resulting string: will I have to write a loop myself, looking for the 0-byte? Or is there already a "strlen" command built-in?

Thanks in advance for your help

Brucey

(Posted 2007) [#2]

I use strlen in some of my modules... but it won't work properly for multi-byte character strings.

you will have to "extern" it though, as it's not made available by default.

from my database framework:

Extern
	Function _strlen:Int(s:Byte Ptr) = "strlen"
End Extern

Rozek

(Posted 2007) [#3]

Brucey,

that's a brilliant idea! "C" strings aren't multi-byte anyway (otherwise, the $z suffix would be useless).

I'll try it immediately - thanks for the trick