grouplist.c

/*
** grouplist.c
** A list of group records.
*/

#include <stdio.h>
#include <stdlib.h>
#include "grouprecord.h"
#include "grouplist.h"
#include "memory.h"

grouplist grouplist_constructor (void)
{
    grouplist newlist = (grouplist) check_malloc (sizeof(grouplist_struct));
    newlist->list = NULL;
    newlist->size = 0;
    return (newlist);
}

void grouplist_insert (grouplist l, group rec)
{
    l->size++;
    l->list = (group *) check_realloc (l->list, sizeof(group) * l->size);
    l->list[l->size-1] = rec;
}

void grouplist_free (grouplist l)
{
    int i;

    for (i = 0; i < l->size; i++) {
	free(l->list[i]);
    }

    free(l->list);
    l->size = 0;
}

tnode grouplist_get_group_tnode (grouplist glist, int groupnum)
{
    if (groupnum > glist->size) {
	fprintf(stderr, "vlist: getting current length of a non-existent tnode!\n");
	exit (-1);
    }

    return (glist->list[groupnum-1]->node);
}