Lstrlen Alternative

[made_of_asp]

Hi,

Is there a function that determines string (or null-terminated memory block) size and returns DWORD or INT64?

Or do I have to write my own?

Thanks for help.

[CornedBee]

Where's the problem with size_t? It's the platform word lenght.

[made_of_asp]

I don't know - I think size_t is a bit small.
But lstrlen returns int

I can't use CRT functions.

Never mind I wrote my own function now.

[CornedBee]

The maximum positive value for int is about 2 billion. Since every strlen, no matter which, simply checks character by character for a \0 any string that could break the int limit is unlikely to be held in memory.

[jim mcnamara]

CB is correct - there is no need for it, although it's very simple.

DWORD mystrlen(char * src){
       DWORD len = 0;
       char *buf;
       for(buf=src;*buf; len++,buf++); 
       return len;
}

but I don't get why you need to do it.

[CornedBee]

You don't even need the buf, you can directly write
for(;*src; ++len,++src);
and if you don't plan to use exotic compilers (probably not when programming for windows) you should write
DWORD mystrlen(const char * src)
for the sake of better design, or even better
DWORD mystrlen(const TCHAR *src)
or
DWORD mystrlen(LPCTSTR src)
to support UNICODE builds.