Re: Choosing a queue according to length - solution

[richard]

On Wed, 19 Jan 2000, Petr Novotny wrote:

> maildecide is a program I have written in C which counts the bytes, 
> rewinds stdin and invokes /var/qmail{2,3}/bin/forward. I didn't 
> succeed with condredirect - it fails to pass the $HOST to the 
> redirected address.
> 
> maildecide.c looks like this:
> #include <stdio.h>
> #include <stdlib.h>
> 
> void main(void)
> {
>         int len=0;
>         while (!feof(stdin))
>         { fgetc(stdin); len++; }
>         rewind(stdin);
ugh, byte-at-a-time reading for stdin, and then rewind it.
> 
>         if (len>=128000)
>          system("/var/qmail3/bin/forward \"$DEFAULT@$HOST\"");
>         else
>          system("/var/qmail2/bin/forward \"$DEFAULT@$HOST\"");
> }
> 

Here is a version which should run much faster; it doesn't read anyhting out of the 
file.

#include <stdio.h>
#include <stdlib.h>
void main(void)
{
       long len=0L;

       fseek( stdin, 0L, SEEK_END);
       len=ftell(stdin);
       fseek( stdin, 0L, SEEK_SET);
       if (len>=128000L)
        system("/var/qmail3/bin/forward \"$DEFAULT@$HOST\"");
       else
        system("/var/qmail2/bin/forward \"$DEFAULT@$HOST\"");
}
----- 

RjL
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