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Path: utzoo!mnetor!seismo!ll-xn!mit-eddie!apollo!rees
From: rees@apollo.uucp (Jim Rees)
Newsgroups: news.admin,news.sysadmin,news.software.b
Subject: Re: Expiration time for newsgroups
Message-ID: <337b4fad.982f@apollo.uucp>
Date: Thu, 5-Mar-87 09:08:00 EST
Article-I.D.: apollo.337b4fad.982f
Posted: Thu Mar  5 09:08:00 1987
Date-Received: Sat, 7-Mar-87 05:07:24 EST
References: <94@asi.UUCP>
Organization: Apollo Computer, Chelmsford, Mass.
Lines: 52
Xref: mnetor news.admin:196 news.sysadmin:58 news.software.b:343


    Has anyone considered adding a field to the active file which specifies the
    default expiration time for that news group?

Some people advocate running expire multiple times with different expiration
times for each run, but that's pretty inefficient.  I've hacked up our expire
to read expiration times from a file.  Here are the relevant routines:

struct {
	char *pat;
	long incr;
} nga[100];

readexpdays()
{
	char buf[BUFLEN], ngbuf[BUFLEN];
	FILE *f;
	int i, n;
	long incr;

	sprintf(buf, "%s/%s", LIB, "expdays");
	f = xfopen(buf, "r");
	i = 0;
	while (fgets(buf, sizeof buf, f) != NULL) {
		n = sscanf(buf, "%s %d", ngbuf, &incr);
		if (n < 1)
			continue;
		if (n == 1)
			nga[i].incr = expincr;
		else
			nga[i].incr = incr * DAYS;
		nga[i].pat = malloc(strlen(ngbuf) + 1);
		strcpy(nga[i].pat, ngbuf);
		i++;
	}
	nga[i].pat = NULL;
	fclose(f);
}

getincr(group)
char *group;
{
	int i;

	for (i = 0; nga[i].pat != NULL; i++)
		if (ngmatch(group, nga[i].pat)) {
			if (verbose > 2)
				printf("pattern %s incr %d days\n", nga[i].pat, nga[i].incr / DAYS);
			return (nga[i].incr);
		}
	return -1;
}