/*
 * Copyright (c) 1989 Jan-Simon Pendry
 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry at Imperial College, London.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)fsi_dict.c	8.1 (Berkeley) 6/6/93
 *
 * $Id$
 *
 */

/*
 * Dictionary support
 */

#include "../fsinfo/fsinfo.h"

static int dict_hash(k)
char *k;
{
	unsigned int h;

	for (h = 0; *k; h += *k++)
		;
	return h % DICTHASH;
}

dict *new_dict()
{
	dict *dp = ALLOC(dict);
	return dp;
}

static void dict_add_data(de, v)
dict_ent *de;
char *v;
{
	dict_data *dd = ALLOC(dict_data);
	dd->dd_data = v;
	ins_que(&dd->dd_q, de->de_q.q_back);
	de->de_count++;
}

static dict_ent *new_dict_ent(k)
char *k;
{
	dict_ent *de = ALLOC(dict_ent);
	de->de_key = k;
	init_que(&de->de_q);
	return de;
}

dict_ent *dict_locate(dp, k)
dict *dp;
char *k;
{
	dict_ent *de = dp->de[dict_hash(k)];
	while (de && !STREQ(de->de_key, k))
		de = de->de_next;

	return de;
}

void dict_add(dp, k, v)
dict *dp;
char *k, *v;
{
	dict_ent *de = dict_locate(dp, k);
	if (!de) {
		dict_ent **dep = &dp->de[dict_hash(k)];
		de = new_dict_ent(k);
		de->de_next = *dep;
		*dep = de;
	}
	dict_add_data(de, v);
}

int dict_iter(dp, fn)
dict *dp;
int (*fn)();
{
	int i;
	int errors = 0;

	for (i = 0; i < DICTHASH; i++) {
		dict_ent *de = dp->de[i];
		while (de) {
			errors += (*fn)(&de->de_q);
			de = de->de_next;
		}
	}
	return errors;
}