/* walkdb.c -- Support for commands that walk the entire db */
#include "autoconf.h"
#include "copyright.h"
#ifndef lint
static char *RCSid = "$Id: walkdb.c,v 1.8 1995/03/21 00:01:41 ambar Exp $";
USE(RCSid);
#endif
#include "interface.h"
#include "match.h"
#include "command.h"
#include "flags.h"
#include "misc.h"
/* Bind occurances of the universal var in ACTION to ARG, then run ACTION.
Cmds run in low-prio Q after a 1 sec delay for the first one. */
static void
bind_and_queue(player, cause, action, argstr, cargs, ncargs, number)
dbref player, cause;
int ncargs;
char *action, *argstr, *cargs[];
{
char *command, *command2; /* allocated by replace_string */
char tbuf[8];
command = replace_string(BOUND_VAR, argstr, action);
ltos(tbuf, number);
command2 = replace_string(LISTPLACE_VAR, tbuf, command);
wait_que(player, cause, 0, NOTHING, command2, cargs, ncargs,
mudstate.global_regs);
free_lbuf(command);
free_lbuf(command2);
}
/* New @dolist. i.e.:
* @dolist #12 #34 #45 #123 #34644=@emit [name(##)]
*
* New switches added 12/92, /space (default) delimits list using spaces,
* and /delimit allows specification of a delimiter.
*
* Additional switch /notify queues a '@notify me' at the end of it.
*/
void
do_dolist(player, cause, key, list, command, cargs, ncargs)
dbref player, cause;
int key, ncargs;
char *list, *command, *cargs[];
{
char *tbuf, *curr, *objstring, delimiter = ' ';
int number = 0;
if (!list || *list == '\0') {
notify(player,
"That's terrific, but what should I do with the list?");
return;
}
curr = list;
if (key & DOLIST_DELIMIT) {
char *tempstr;
if (strlen((tempstr = parse_to(&curr, ' ', EV_STRIP))) > 1) {
notify(player, "The delimiter must be a single character!");
return;
}
delimiter = *tempstr;
}
while (curr && *curr) {
while (*curr == delimiter)
curr++;
if (*curr) {
number++;
objstring = parse_to(&curr, delimiter, EV_STRIP);
bind_and_queue(player, cause, command, objstring,
cargs, ncargs, number);
}
}
if (key & DOLIST_NOTIFY) {
tbuf = alloc_lbuf("dolist.notify_cmd");
strcpy(tbuf, (char *) "@notify me");
wait_que(player, cause, 0, NOTHING, tbuf, cargs, ncargs,
mudstate.global_regs);
free_lbuf(tbuf);
}
}
/* Regular @find command */
void
do_find(player, cause, key, name)
dbref player, cause;
int key;
char *name;
{
dbref i, low_bound, high_bound;
char *buff;
if (!payfor(player, mudconf.searchcost)) {
notify_quiet(player,
tprintf("You don't have enough %s.",
mudconf.many_coins));
return;
}
parse_range(&name, &low_bound, &high_bound);
for (i = low_bound; i <= high_bound; i++) {
if ((i % 100) == 0)
cache_reset(0);
if (!isExit(i) && controls(player, i) &&
(!*name || string_match(Name(i), name))) {
buff = unparse_object(player, i, 0);
notify(player, buff);
free_lbuf(buff);
}
}
notify(player, "***End of List***");
}
/* ---------------------------------------------------------------------------
* get_stats, do_stats: Get counts of items in the db.
*/
int
get_stats(player, who, info)
dbref player, who;
STATS *info;
{
dbref i;
info->s_total = 0;
info->s_rooms = 0;
info->s_exits = 0;
info->s_things = 0;
info->s_players = 0;
info->s_garbage = 0;
/* Do we have permission? */
if (Good_obj(who) && !Controls(player, who)) {
notify(player, "Permission denied.");
return 0;
}
/* Can we afford it? */
if (!payfor(player, mudconf.searchcost)) {
notify(player, tprintf("You don't have enough %s.",
mudconf.many_coins));
return 0;
}
DO_WHOLE_DB(i) {
if ((who == NOTHING) || (who == Owner(i))) {
info->s_total++;
if (Going(i) && (!isRoom(i))) {
info->s_garbage++;
continue;
}
switch (Typeof(i)) {
case TYPE_ROOM:
info->s_rooms++;
break;
case TYPE_EXIT:
info->s_exits++;
break;
case TYPE_THING:
info->s_things++;
break;
case TYPE_PLAYER:
info->s_players++;
break;
default:
info->s_garbage++;
}
}
}
return 1;
}
void
do_stats(player, cause, key, name)
dbref player, cause;
int key;
char *name;
/* reworked by R'nice */
{
dbref owner;
STATS statinfo;
switch (key) {
case STAT_ALL:
owner = NOTHING;
break;
case STAT_ME:
owner = Owner(player);
break;
case STAT_PLAYER:
if (!(name && *name)) {
notify(player,
tprintf("The universe contains %d objects (next free is #%d).",
mudstate.db_top,
((mudstate.freelist == NOTHING) ?
mudstate.db_top : mudstate.freelist)));
return;
}
owner = lookup_player(player, name, 1);
if (owner == NOTHING) {
notify(player, "Not found.");
return;
}
break;
default:
notify(player, "Illegal combination of switches.");
return;
}
if (!get_stats(player, owner, &statinfo))
return;
notify(player,
tprintf("%d objects = %d rooms, %d exits, %d things, %d players. (%d garbage)",
statinfo.s_total, statinfo.s_rooms, statinfo.s_exits,
statinfo.s_things, statinfo.s_players,
statinfo.s_garbage));
#ifdef TEST_MALLOC
if (Wizard(player))
notify(player, tprintf("Malloc count = %d.", malloc_count));
#endif /* TEST_MALLOC */
#ifdef MSTATS
if (Wizard(player)) {
struct mstats_value mval;
int i;
extern unsigned int malloc_sbrk_used, malloc_sbrk_unused;
extern int nmal, nfre;
extern struct mstats_value malloc_stats();
extern int malloc_mem_used(), malloc_mem_free();
notify(player, tprintf("Sbrk Unused: %d -- Sbrk Used: %d",
malloc_sbrk_unused, malloc_sbrk_used));
notify(player, tprintf("Raw malloc cnt: %d -- Raw free cnt: %d",
nmal, nfre));
for (i = 0; i < 15; i++) {
mval = malloc_stats(i);
notify(player, tprintf("Blocksz: %d -- Free: %d -- Used: %d",
mval.blocksize, mval.nfree, mval.nused));
}
notify(player, tprintf("Mem used: %d -- Mem free: %d",
malloc_mem_used(), malloc_mem_free()));
}
#endif /* MSTATS */
}
void
do_chownall(player, cause, key, from, to)
dbref player, cause;
int key;
char *from, *to;
{
int count;
dbref victim, recipient;
init_match(player, from, TYPE_PLAYER);
match_absolute();
match_player();
match_neighbor();
if ((victim = noisy_match_result()) == NOTHING)
return;
if ((to != NULL) && *to) {
init_match(player, to, TYPE_PLAYER);
match_absolute();
match_player();
match_neighbor();
if ((recipient = noisy_match_result()) == NOTHING)
return;
} else {
recipient = player;
}
count = chown_all(victim, recipient);
if (!Quiet(player)) {
notify(player, tprintf("%d objects @chowned.", count));
}
}
int
chown_all(from_player, to_player)
dbref from_player, to_player;
{
register int i, count = 0, q_t = 0, q_p = 0, q_r = 0, q_e = 0;
if (!isPlayer(from_player))
from_player = Owner(from_player);
if (!isPlayer(to_player))
to_player = Owner(to_player);
DO_WHOLE_DB(i) {
if ((Owner(i) == from_player) && (Owner(i) != i)) {
switch (Typeof(i)) {
case TYPE_PLAYER:
s_Owner(i, i);
q_p += mudconf.player_quota;
break;
case TYPE_THING:
if (Going(i))
break;
s_Owner(i, to_player);
q_t += mudconf.thing_quota;
break;
case TYPE_ROOM:
s_Owner(i, to_player);
q_r += mudconf.room_quota;
break;
case TYPE_EXIT:
s_Owner(i, to_player);
q_e += mudconf.exit_quota;
break;
default:
s_Owner(i, to_player);
}
s_Flags(i, (Flags(i) & ~(CHOWN_OK | INHERIT)) | HALT);
count++;
}
}
payfees(to_player, 0, q_p, TYPE_PLAYER);
payfees(from_player, 0, -q_p, TYPE_PLAYER);
payfees(to_player, 0, q_r, TYPE_ROOM);
payfees(from_player, 0, -q_r, TYPE_ROOM);
payfees(to_player, 0, q_e, TYPE_EXIT);
payfees(from_player, 0, -q_e, TYPE_EXIT);
payfees(to_player, 0, q_t, TYPE_THING);
payfees(from_player, 0, -q_t, TYPE_THING);
return count;
}
#define ANY_OWNER -2
void
er_mark_disabled(player)
dbref player;
{
notify(player,
"The mark commands are not allowed while DB cleaning is enabled.");
notify(player,
"Use the '@disable cleaning' command to disable automatic cleaning.");
notify(player,
"Remember to '@unmark_all' before re-enabling automatic cleaning.");
}
/* ---------------------------------------------------------------------------
* do_search: Walk the db reporting various things (or setting/clearing
* mark bits)
*/
int
search_setup(player, searchfor, parm)
dbref player;
char *searchfor;
SEARCH *parm;
{
char *pname, *searchtype, *t;
int err;
/* Crack arg into <pname> <type>=<targ>,<low>,<high> */
pname = parse_to(&searchfor, '=', EV_STRIP_TS);
if (!pname || !*pname) {
pname = (char *) "me";
} else
for (t = pname; *t; t++) {
if (isupper(*t))
*t = tolower(*t);
}
if (searchfor && *searchfor) {
searchtype = (char *) rindex(pname, ' ');
if (searchtype) {
*searchtype++ = '\0';
} else {
searchtype = pname;
pname = (char *) "";
}
} else {
searchtype = (char *) "";
}
/* If the player name is quoted, strip the quotes */
if (*pname == '\"') {
err = strlen(pname) - 1;
if (pname[err] == '"') {
pname[err] = '\0';
pname++;
}
}
/* Strip any range arguments */
parse_range(&searchfor, &parm->low_bound, &parm->high_bound);
/* set limits on who we search */
parm->s_owner = Owner(player);
parm->s_wizard = Wizard(player);
parm->s_rst_owner = NOTHING;
if (!*pname) {
parm->s_rst_owner = parm->s_wizard ? ANY_OWNER : player;
} else if (pname[0] == '#') {
parm->s_rst_owner = atoi(&pname[1]);
if (!Good_obj(parm->s_rst_owner))
parm->s_rst_owner = NOTHING;
else if (!isPlayer(parm->s_rst_owner))
parm->s_rst_owner = NOTHING;
} else if (strcmp(pname, "me") == 0) {
parm->s_rst_owner = player;
} else {
parm->s_rst_owner = lookup_player(player, pname, 1);
}
if (parm->s_rst_owner == NOTHING) {
notify(player, tprintf("%s: No such player", pname));
return 0;
}
/* set limits on what we search for */
err = 0;
parm->s_rst_name = NULL;
parm->s_rst_eval = NULL;
parm->s_rst_type = NOTYPE;
parm->s_parent = NOTHING;
parm->s_fset.word1 = 0;
parm->s_fset.word2 = 0;
switch (searchtype[0]) {
case '\0': /* the no class requested class :) */
break;
case 'e':
if (string_prefix("exits", searchtype)) {
parm->s_rst_name = searchfor;
parm->s_rst_type = TYPE_EXIT;
} else if (string_prefix("evaluate", searchtype)) {
parm->s_rst_eval = searchfor;
} else if (string_prefix("eplayer", searchtype)) {
parm->s_rst_type = TYPE_PLAYER;
parm->s_rst_eval = searchfor;
} else if (string_prefix("eroom", searchtype)) {
parm->s_rst_type = TYPE_ROOM;
parm->s_rst_eval = searchfor;
} else if (string_prefix("eobject", searchtype)) {
parm->s_rst_type = TYPE_THING;
parm->s_rst_eval = searchfor;
} else if (string_prefix("ething", searchtype)) {
parm->s_rst_type = TYPE_THING;
parm->s_rst_eval = searchfor;
} else if (string_prefix("eexit", searchtype)) {
parm->s_rst_type = TYPE_EXIT;
parm->s_rst_eval = searchfor;
} else {
err = 1;
}
break;
case 'f':
if (string_prefix("flags", searchtype)) {
/* convert_flags ignores previous values of flag_mask
* and s_rst_type while setting them */
if (!convert_flags(player, searchfor, &parm->s_fset,
&parm->s_rst_type))
return 0;
} else {
err = 1;
}
break;
case 'n':
if (string_prefix("name", searchtype)) {
parm->s_rst_name = searchfor;
} else {
err = 1;
}
break;
case 'o':
if (string_prefix("objects", searchtype)) {
parm->s_rst_name = searchfor;
parm->s_rst_type = TYPE_THING;
} else {
err = 1;
}
break;
case 'p':
if (string_prefix("players", searchtype)) {
parm->s_rst_name = searchfor;
parm->s_rst_type = TYPE_PLAYER;
if (!*pname)
parm->s_rst_owner = ANY_OWNER;
} else if (string_prefix("parent", searchtype)) {
parm->s_parent = match_controlled(player, searchfor);
if (!Good_obj(parm->s_parent))
return 0;
if (!*pname)
parm->s_rst_owner = ANY_OWNER;
} else {
err = 1;
}
break;
case 'r':
if (string_prefix("rooms", searchtype)) {
parm->s_rst_name = searchfor;
parm->s_rst_type = TYPE_ROOM;
} else {
err = 1;
}
break;
case 't':
if (string_prefix("type", searchtype)) {
if (searchfor[0] == '\0')
break;
if (string_prefix("rooms", searchfor))
parm->s_rst_type = TYPE_ROOM;
else if (string_prefix("exits", searchfor))
parm->s_rst_type = TYPE_EXIT;
else if (string_prefix("objects", searchfor))
parm->s_rst_type = TYPE_THING;
else if (string_prefix("things", searchfor))
parm->s_rst_type = TYPE_THING;
else if (string_prefix("players", searchfor)) {
parm->s_rst_type = TYPE_PLAYER;
if (!*pname)
parm->s_rst_owner = ANY_OWNER;
} else {
notify(player,
tprintf("%s: unknown type",
searchfor));
return 0;
}
} else if (string_prefix("things", searchtype)) {
parm->s_rst_name = searchfor;
parm->s_rst_type = TYPE_THING;
} else {
err = 1;
}
break;
default:
err = 1;
}
if (err) {
notify(player, tprintf("%s: unknown class", searchtype));
return 0;
}
/* Make sure player is authorized to do the search */
if (!parm->s_wizard &&
(parm->s_rst_type != TYPE_PLAYER) &&
(parm->s_rst_owner != player) &&
(parm->s_rst_owner != ANY_OWNER)) {
notify(player, "You need a search warrant to do that!");
return 0;
}
/* make sure player has money to do the search */
if (!payfor(player, mudconf.searchcost)) {
notify(player,
tprintf("You don't have enough %s to search. (You need %d)",
mudconf.many_coins, mudconf.searchcost));
return 0;
}
return 1;
}
void
search_perform(player, cause, parm)
dbref player, cause;
SEARCH *parm;
{
FLAG thing1flags, thing2flags;
dbref thing;
char *buff, *buff2, *result;
int save_invk_ctr;
buff = alloc_sbuf("search_perform.num");
olist_init();
save_invk_ctr = mudstate.func_invk_ctr;
for (thing = parm->low_bound; thing <= parm->high_bound; thing++) {
if ((thing % 100) == 0) {
cache_reset(0);
}
mudstate.func_invk_ctr = save_invk_ctr;
/* Check for matching type */
if ((parm->s_rst_type != NOTYPE) &&
(parm->s_rst_type != Typeof(thing)))
continue;
/* Check for matching owner */
if ((parm->s_rst_owner != ANY_OWNER) &&
(parm->s_rst_owner != Owner(thing)))
continue;
/* Toss out destroyed things */
thing1flags = Flags(thing);
if (isThing(thing) && (thing1flags & GOING))
continue;
/* Check for matching parent */
if ((parm->s_parent != NOTHING) &&
(parm->s_parent != Parent(thing)))
continue;
/* Check for matching flags */
thing2flags = Flags2(thing);
if ((thing1flags & parm->s_fset.word1) != parm->s_fset.word1)
continue;
if ((thing2flags & parm->s_fset.word2) != parm->s_fset.word2)
continue;
/* Check for matching name */
if (parm->s_rst_name != NULL) {
if (!string_prefix(Name(thing), parm->s_rst_name))
continue;
}
/* Check for successful evaluation */
if (parm->s_rst_eval != NULL) {
*buff = '#';
ltos(&buff[1], thing);
buff2 = replace_string(BOUND_VAR, buff,
parm->s_rst_eval);
result = exec(player, cause,
EV_FCHECK | EV_EVAL | EV_NOTRACE, buff2,
(char **) NULL, 0);
free_lbuf(buff2);
if (!*result || !xlate(result)) {
free_lbuf(result);
continue;
}
free_lbuf(result);
}
/* It passed everything. Amazing. */
olist_add(thing);
}
free_sbuf(buff);
mudstate.func_invk_ctr = save_invk_ctr;
}
static void
search_mark(player, key)
dbref player;
int key;
{
dbref thing;
int nchanged, is_marked;
nchanged = 0;
for (thing = olist_first(); thing != NOTHING; thing = olist_next()) {
is_marked = Marked(thing);
/* Don't bother checking if marking and already marked
* (or if unmarking and not marked) */
if (((key == SRCH_MARK) && is_marked) ||
((key == SRCH_UNMARK) && !is_marked))
continue;
/* Toggle the mark bit and update the counters */
if (key == SRCH_MARK) {
Mark(thing);
nchanged++;
} else {
Unmark(thing);
nchanged++;
}
}
notify(player,
tprintf("%d objects %smarked",
nchanged, ((key == SRCH_MARK) ? "" : "un")));
return;
}
void
do_search(player, cause, key, arg)
dbref player, cause;
int key;
char *arg;
{
int flag, destitute;
int rcount, ecount, tcount, pcount;
char *buff, *outbuf, *bp;
dbref thing, from, to;
SEARCH searchparm;
if ((key != SRCH_SEARCH) && (mudconf.control_flags & CF_DBCHECK)) {
er_mark_disabled(player);
return;
}
if (!search_setup(player, arg, &searchparm))
return;
search_perform(player, cause, &searchparm);
destitute = 1;
/* If we are doing a @mark command, handle that here. */
if (key != SRCH_SEARCH) {
search_mark(player, key);
return;
}
outbuf = alloc_lbuf("do_search.outbuf");
rcount = ecount = tcount = pcount = 0;
/* room search */
if (searchparm.s_rst_type == TYPE_ROOM ||
searchparm.s_rst_type == NOTYPE) {
flag = 1;
for (thing = olist_first(); thing != NOTHING; thing = olist_next()) {
if (!isRoom(thing))
continue;
if (flag) {
flag = 0;
destitute = 0;
notify(player, "\nROOMS:");
}
buff = unparse_object(player, thing, 0);
notify(player, buff);
free_lbuf(buff);
rcount++;
}
}
/* exit search */
if (searchparm.s_rst_type == TYPE_EXIT ||
searchparm.s_rst_type == NOTYPE) {
flag = 1;
for (thing = olist_first(); thing != NOTHING; thing = olist_next()) {
if (!isExit(thing))
continue;
if (flag) {
flag = 0;
destitute = 0;
notify(player, "\nEXITS:");
}
from = Exits(thing);
to = Location(thing);
bp = outbuf;
buff = unparse_object(player, thing, 0);
safe_str(buff, outbuf, &bp);
free_lbuf(buff);
safe_str((char *) " [from ", outbuf, &bp);
buff = unparse_object(player, from, 0);
safe_str(((from == NOTHING) ? "NOWHERE" : buff),
outbuf, &bp);
free_lbuf(buff);
safe_str((char *) " to ", outbuf, &bp);
buff = unparse_object(player, to, 0);
safe_str(((to == NOTHING) ? "NOWHERE" : buff),
outbuf, &bp);
free_lbuf(buff);
safe_chr(']', outbuf, &bp);
notify(player, outbuf);
ecount++;
}
}
/* object search */
if (searchparm.s_rst_type == TYPE_THING ||
searchparm.s_rst_type == NOTYPE) {
flag = 1;
for (thing = olist_first(); thing != NOTHING; thing = olist_next()) {
if (!isThing(thing))
continue;
if (flag) {
flag = 0;
destitute = 0;
notify(player, "\nOBJECTS:");
}
bp = outbuf;
buff = unparse_object(player, thing, 0);
safe_str(buff, outbuf, &bp);
free_lbuf(buff);
safe_str((char *) " [owner: ", outbuf, &bp);
buff = unparse_object(player, Owner(thing), 0);
safe_str(buff, outbuf, &bp);
free_lbuf(buff);
safe_chr(']', outbuf, &bp);
notify(player, outbuf);
tcount++;
}
}
/* player search */
if (searchparm.s_rst_type == TYPE_PLAYER ||
searchparm.s_rst_type == NOTYPE) {
flag = 1;
for (thing = olist_first(); thing != NOTHING; thing = olist_next()) {
if (!isPlayer(thing))
continue;
if (flag) {
flag = 0;
destitute = 0;
notify(player, "\nPLAYERS:");
}
bp = outbuf;
buff = unparse_object(player, thing, 0);
safe_str(buff, outbuf, &bp);
free_lbuf(buff);
if (searchparm.s_wizard) {
safe_str((char *) " [location: ",
outbuf, &bp);
buff = unparse_object(player,
Location(thing), 0);
safe_str(buff, outbuf, &bp);
free_lbuf(buff);
safe_chr(']', outbuf, &bp);
}
notify(player, outbuf);
pcount++;
}
}
/* if nothing found matching search criteria */
if (destitute) {
notify(player, "Nothing found.");
} else {
sprintf(outbuf,
"\nFound: Rooms...%d Exits...%d Objects...%d Players...%d",
rcount, ecount, tcount, pcount);
notify(player, outbuf);
}
free_lbuf(outbuf);
olist_init();
}
/* ---------------------------------------------------------------------------
* do_markall: set or clear the mark bits of all objects in the db.
*/
void
do_markall(player, cause, key)
dbref player, cause;
int key;
{
int i;
if (mudconf.control_flags & CF_DBCHECK) {
er_mark_disabled(player);
return;
}
if (key == MARK_SET)
Mark_all(i);
else if (key == MARK_CLEAR)
Unmark_all(i);
if (!Quiet(player))
notify(player, "Done.");
}
/* ---------------------------------------------------------------------------
* do_apply_marked: Perform a command for each marked obj in the db.
*/
void
do_apply_marked(player, cause, key, command, cargs, ncargs)
dbref player, cause;
int key, ncargs;
char *command, *cargs[];
{
char *buff;
int i;
int number = 0;
if (mudconf.control_flags & CF_DBCHECK) {
er_mark_disabled(player);
return;
}
buff = alloc_sbuf("do_apply_marked");
DO_WHOLE_DB(i) {
if (Marked(i)) {
*buff = '#';
ltos(&buff[1], i);
number++;
bind_and_queue(player, cause, command, buff,
cargs, ncargs, number);
}
}
free_sbuf(buff);
if (!Quiet(player))
notify(player, "Done.");
}
/* ---------------------------------------------------------------------------
* olist_init, olist_add, olist_first, olist_next: Object list management
* routines.
*/
/* olist_init: Clear and initialize the object list */
void
NDECL(olist_init)
{
OBLOCK *op, *onext;
for (op = mudstate.olist_head; op != NULL; op = onext) {
onext = op->next;
free_lbuf(op);
}
mudstate.olist_head = NULL;
mudstate.olist_tail = NULL;
mudstate.olist_cblock = NULL;
mudstate.olist_count = 0;
mudstate.olist_citm = 0;
}
/* olist_add: Add an entry to the object list */
void
olist_add(item)
dbref item;
{
OBLOCK *op;
if (!mudstate.olist_head) {
op = (OBLOCK *) alloc_lbuf("olist_add.first");
mudstate.olist_head = mudstate.olist_tail = op;
mudstate.olist_count = 0;
op->next = NULL;
} else if (mudstate.olist_count >= OBLOCK_SIZE) {
op = (OBLOCK *) alloc_lbuf("olist_add.next");
mudstate.olist_tail->next = op;
mudstate.olist_tail = op;
mudstate.olist_count = 0;
op->next = NULL;
} else {
op = mudstate.olist_tail;
}
op->data[mudstate.olist_count++] = item;
}
/* olist_first: Return the first entry in the object list */
dbref
NDECL(olist_first)
{
if (!mudstate.olist_head)
return NOTHING;
if ((mudstate.olist_head == mudstate.olist_tail) &&
(mudstate.olist_count == 0))
return NOTHING;
mudstate.olist_cblock = mudstate.olist_head;
mudstate.olist_citm = 0;
return mudstate.olist_cblock->data[mudstate.olist_citm++];
}
dbref
NDECL(olist_next)
{
dbref thing;
if (!mudstate.olist_cblock)
return NOTHING;
if ((mudstate.olist_cblock == mudstate.olist_tail) &&
(mudstate.olist_citm >= mudstate.olist_count))
return NOTHING;
thing = mudstate.olist_cblock->data[mudstate.olist_citm++];
if (mudstate.olist_citm >= OBLOCK_SIZE) {
mudstate.olist_cblock = mudstate.olist_cblock->next;
mudstate.olist_citm = 0;
}
return thing;
}