Re: Windows IO lib

[Rob Kendrick <lua-l@...>]

The Doctor wrote:
> I'm new enough to this, that I might be missing something, but this can be done in the main code of Lua as supplied. I'm using Windows. I was warned to be careful about btye order but this is working and not a problem for me.
>
> These are the two functions I've worked out for handling save amd load of binary files:
>
> function DataLoad(F)                                                    
>     F=assert(io.open(F,"rb"))  local D=F:read("*a")  F:close()  return D
> end                                                                     
>                                                                         
> function DataSave(F,D)                                                  
>     F=assert(io.open(F,"wb"))  F:write(D)  F:close()                    
> end                                                                     
>
> If it's this easy, why add a special library to what's already there?

For a very very minimal footprint, using the FILE* operations in the libc 
means you have to use the libc.  Using direct system calls means you don't, so 
you can use a smaller runtime library.  Under UNIX for example, some small 
bindings to open/read/write/close will be many times smaller than bindings to 
fopen/fscanf/fprintf/fclose and the required support code, for example.

--
Rob Kendrick, Pepperfish Ltd.         +44 (0)845 226 4146  www.pepperfish.net
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