Re: Lua for PalmOS - Some questions

[David Jones <drj@...>]

On Mar 04, 2004, at 16:19, Luiz Henrique de Figueiredo wrote:

> I wrote a simple (public-domain) implementation of most of the 
> functions from
> the standard C library that are needed by the Lua core. Unfortunately, 
> it
> does not contain vsprinf, but there must be a public-domain or 
> MIT-licencsed
> implementation of it somewhere.
> --lhf
>
> /*
> * libc.c
> * functions from the standard C library that are needed by the Lua core
> */
>
> char *strncpy(char *d, const char *s, size_t n)
> {
>  char *t=d;
>  while (n-- && (*t++=*s++)) ;
>  return d;
> }

The ISO C strncpy is required to always write exactly n chars into the 
destination (null characters are appended).  This fact is not nearly 
well enough known.  Presumably you know for sure, but I doubt that Lua 
relies on this null padding.

Also, many of the prototypes are not C99 compliant, but that is really 
the standard's fault, not yours.

David Jones