SSTRDUP & memory management; file i/o tests and related

[William S. Shu]

Marcus,
Sometime ago you showed a better way of creating labels (and hence various
strings).  I stored the code for later use (givn below) but discover I do
not know how to deAllocate any memory claimed by SSTRDUP.

Unfortunately, cant make out from the doc. For instance, I am not sure if
           FREEBLOCK(block)
will do it.

In fact, I ended up wondering what the following are:

OSTRDUP(obj, str)
STRDUP(str)
ZSTRDUP(aZone, str)

On a separate note, how does one detect/test for end-of-line, end-of-file,
read error, etc., after creating one with, say,
       // open the file
        f = [InFile create: [self getZone] withName: buf];

Thanks

William.

P/S: still using 1.4.1 on windows 98, but answers for 2.0.1 are fine too.


---[ code ---
>>>>> "DS" == Darren Schreiber <address@hidden> writes:

DS> So, first question what is a better way of doing this naming?

Here's a robust way to do that:

#import <simtools.h> // initSwarm
#import <defobj.h> // SSTRDUP
#include <misc.h> // sprintf

const char *
makeLabel (int agentID)
{
  char buf[1 + DSIZE (int) + 1];

  sprintf (buf, "C%d", agentID);
  return SSTRDUP (buf);
}




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