/* ********************************************************************** *\
 *         Copyright IBM Corporation 1988,1991 - All Rights Reserved      *
 *        For full copyright information see:'andrew/config/COPYRITE'     *
\* ********************************************************************** */

/*
	$Disclaimer: 
 * Permission to use, copy, modify, and distribute this software and its 
 * documentation for any purpose is hereby granted without fee, 
 * provided that the above copyright notice appear in all copies and that 
 * both that copyright notice, this permission notice, and the following 
 * disclaimer appear in supporting documentation, and that the names of 
 * IBM, Carnegie Mellon University, and other copyright holders, not be 
 * used in advertising or publicity pertaining to distribution of the software 
 * without specific, written prior permission.
 * 
 * IBM, CARNEGIE MELLON UNIVERSITY, AND THE OTHER COPYRIGHT HOLDERS 
 * DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 
 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT 
 * SHALL IBM, CARNEGIE MELLON UNIVERSITY, OR ANY OTHER COPYRIGHT HOLDER 
 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY 
 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 
 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
 * OF THIS SOFTWARE.
 *  $
*/

#ifndef NORCSID
#define NORCSID
static char rcsid[]="$Header: /afs/cs.cmu.edu/project/atk-dist/auis-6.3/ams/msclients/nns/RCS/st.c,v 2.6 1992/12/15 21:22:34 rr2b R6tape $";
#endif

/* Methods for the String Table data type for the Netnews Snarfer
*/

#include <big.h>

static int      STHash(string)
char           *string;
{
    int             result = 0;
    char           *p = string;

    while (result += *p, *(p++));
    return (result % NUMSTBUCKETS);
}

void            STInit(st)
STable_t       *st;
{
    int             i;

    st->HashFn = STHash;
    for (i = 0; i < NUMSTBUCKETS; ++i)
	STBInit(&(st->buckets[i]));
}

void            STPurge(st)
STable_t       *st;
{
    int             i;

    for (i = 0; i < NUMSTBUCKETS; ++i)
	STBPurge(&(st->buckets[i]));
}

char           *STFindOrMake(st, string)
STable_t       *st;
char           *string;
{
    char           *tmp = STFind(st, string);

    if (!tmp)
	tmp = STMake(st, string);
    return (tmp);
}

char           *STFind(st, string)
STable_t       *st;
char           *string;
{
    int             hash = (*(st->HashFn)) (string);
    char           *tmp = STBFind(&(st->buckets[hash]), string);

    return (tmp);
}

char           *STMake(st, string)
STable_t       *st;
char           *string;
{
    return (STBMake(&(st->buckets[(*(st->HashFn)) (string)]), string));
}