dbref db_write(FILE * f, int format, int version)
{
dbref i;
int flags;
VATTR *vp;
switch (format) {
case F_MUX:
flags = version;
break;
default:
fprintf(stderr, "Can only write MUX format.\n");
return -1;
}
i = mudstate.attr_next;
fprintf(f, "+X%d\n+S%d\n+N%d\n", flags, mudstate.db_top, i);
fprintf(f, "-R%d\n", mudstate.record_players);
/*
* Dump user-named attribute info
*/
vp = vattr_first();
while (vp != NULL) {
if(!(vp->flags & AF_DELETED))
fprintf(f, "+A%d\n\"%d:%s\"\n", vp->number, vp->flags, vp->name);
vp = vattr_next(vp);
}
DO_WHOLE_DB(i) {
if(!(Going(i))) {
fprintf(f, "!%d\n", i);
db_write_object(f, i, format, flags);
}
}
fputs("***END OF DUMP***\n", f);
fflush(f);
return (mudstate.db_top);
}
void do_dbclean( dbref player, dbref cause, int key ) {
VATTR *vp, *vpx;
dbref i, end;
int ca, n_oldtotal, n_oldtop, n_deleted, n_renumbered, n_objt, n_atrt,
got;
char *as, *str;
int *used_table;
ATTR **new_table;
UFUN *ufp;
CMDENT *cmdp;
ADDENT *addp;
raw_broadcast( 0, "GAME: Cleaning database. Game may freeze for a few minutes." );
used_table = ( int * ) XCALLOC( mudstate.attr_next, sizeof( int ),
"dbclean.used_table" );
n_oldtotal = mudstate.attr_next;
n_oldtop = anum_alc_top;
n_deleted = n_renumbered = n_objt = n_atrt = 0;
/*
* Non-user-defined attributes are always considered used.
*/
for( i = 0; i < A_USER_START; i++ ) {
used_table[i] = i;
}
/*
* Walk the database. Mark all the attribute numbers in use.
*/
atr_push();
DO_WHOLE_DB( i ) {
for( ca = atr_head( i, &as ); ca; ca = atr_next( &as ) ) {
used_table[ca] = ca;
}
}
atr_pop();
/*
* Walk the vattr table. If a number isn't in use, zorch it.
*/
vp = vattr_first();
while( vp ) {
vpx = vp;
vp = vattr_next( vp );
if( used_table[vpx->number] == 0 ) {
anum_set( vpx->number, NULL );
hashdelete( vpx->name, &mudstate.vattr_name_htab );
XFREE( vpx, "dbclean.vpx" );
n_deleted++;
}
}
/*
* The user-defined function, added command, and hook structures embed
* * attribute numbers. Clean out the ones we've deleted, resetting them
* * to the *Invalid (A_TEMP) attr.
*/
for( ufp = ( UFUN * ) hash_firstentry( &mudstate.ufunc_htab );
ufp != NULL; ufp = ( UFUN * ) hash_nextentry( &mudstate.ufunc_htab ) ) {
if( used_table[ufp->atr] == 0 ) {
ufp->atr = A_TEMP;
}
}
for( cmdp = ( CMDENT * ) hash_firstentry( &mudstate.command_htab );
cmdp != NULL;
cmdp = ( CMDENT * ) hash_nextentry( &mudstate.command_htab ) ) {
if( cmdp->pre_hook ) {
if( used_table[cmdp->pre_hook->atr] == 0 ) {
cmdp->pre_hook->atr = A_TEMP;
}
}
if( cmdp->post_hook ) {
if( used_table[cmdp->post_hook->atr] == 0 ) {
cmdp->post_hook->atr = A_TEMP;
}
}
if( cmdp->userperms ) {
if( used_table[cmdp->userperms->atr] == 0 ) {
cmdp->userperms->atr = A_TEMP;
}
}
if( cmdp->callseq & CS_ADDED ) {
for( addp = ( ADDENT * ) cmdp->info.added;
addp != NULL; addp = addp->next ) {
if( used_table[addp->atr] == 0 ) {
addp->atr = A_TEMP;
}
}
}
}
/*
* Walk the table we've created of used statuses. When we find free
* * slots, walk backwards to the first used slot at the end of the
* * table. Write the number of the free slot into that used slot.
*/
for( i = A_USER_START, end = mudstate.attr_next - 1;
( i < mudstate.attr_next ) && ( i < end ); i++ ) {
if( used_table[i] == 0 ) {
while( ( end > i ) && ( used_table[end] == 0 ) ) {
end--;
}
if( end > i ) {
used_table[end] = used_table[i] = i;
end--;
}
}
}
/*
* Renumber the necessary attributes in the vattr tables.
*/
for( i = A_USER_START; i < mudstate.attr_next; i++ ) {
if( used_table[i] != i ) {
vp = ( VATTR * ) anum_get( i );
if( vp ) {
vp->number = used_table[i];
vp->flags |= AF_DIRTY;
anum_set( used_table[i], ( ATTR * ) vp );
anum_set( i, NULL );
n_renumbered++;
}
}
}
/*
* Now we walk the database. For every object, if we have an attribute
* * we're renumbering (the slot number is not equal to the array value
* * at that slot), we delete the old attribute and add the new one.
*/
atr_push();
DO_WHOLE_DB( i ) {
got = 0;
for( ca = atr_head( i, &as ); ca; ca = atr_next( &as ) ) {
if( used_table[ca] != ca ) {
str = atr_get_raw( i, ca );
atr_add_raw( i, used_table[ca], str );
atr_clr( i, ca );
n_atrt++;
got = 1;
}
}
if( got ) {
n_objt++;
}
}
atr_pop();
/*
* The new end of the attribute table is the first thing we've
* * renumbered.
*/
for( end = A_USER_START;
( ( end == used_table[end] ) && ( end < mudstate.attr_next ) ); end++ );
mudstate.attr_next = end;
/*
* We might be able to shrink the size of the attribute table.
* * If the current size of the table is less than the initial
* * size, shrink it back down to the initial size.
* * Otherwise, shrink it down so it's the current top plus the
* * initial size, as if we'd just called anum_extend() for it.
*/
if( anum_alc_top > mudconf.init_size + A_USER_START ) {
if( mudstate.attr_next < mudconf.init_size + A_USER_START ) {
end = mudconf.init_size + A_USER_START;
} else {
end = mudstate.attr_next + mudconf.init_size;
}
if( end < anum_alc_top ) {
new_table = ( ATTR ** ) XCALLOC( end + 1, sizeof( ATTR * ),
"dbclean.new_table" );
for( i = 0; i < mudstate.attr_next; i++ ) {
new_table[i] = anum_table[i];
}
XFREE( anum_table, "dbclean.anum_table" );
anum_table = new_table;
anum_alc_top = end;
}
}
/*
* Go through the function and added command tables again, and
* * take care of the attributes that got renumbered.
*/
for( ufp = ( UFUN * ) hash_firstentry( &mudstate.ufunc_htab );
ufp != NULL; ufp = ( UFUN * ) hash_nextentry( &mudstate.ufunc_htab ) ) {
if( used_table[ufp->atr] != ufp->atr ) {
ufp->atr = used_table[ufp->atr];
}
}
for( cmdp = ( CMDENT * ) hash_firstentry( &mudstate.command_htab );
cmdp != NULL;
cmdp = ( CMDENT * ) hash_nextentry( &mudstate.command_htab ) ) {
if( cmdp->pre_hook ) {
if( used_table[cmdp->pre_hook->atr] !=
cmdp->pre_hook->atr )
cmdp->pre_hook->atr =
used_table[cmdp->pre_hook->atr];
}
if( cmdp->post_hook ) {
if( used_table[cmdp->post_hook->atr] !=
cmdp->post_hook->atr )
cmdp->post_hook->atr =
used_table[cmdp->post_hook->atr];
}
if( cmdp->userperms ) {
if( used_table[cmdp->userperms->atr] !=
cmdp->userperms->atr )
cmdp->userperms->atr =
used_table[cmdp->userperms->atr];
}
if( cmdp->callseq & CS_ADDED ) {
for( addp = ( ADDENT * ) cmdp->info.added;
addp != NULL; addp = addp->next ) {
if( used_table[addp->atr] != addp->atr ) {
addp->atr = used_table[addp->atr];
}
}
}
}
/*
* Clean up.
*/
XFREE( used_table, "dbclean.used_table" );
if( anum_alc_top != n_oldtop ) {
notify_check( player, player, MSG_PUP_ALWAYS|MSG_ME_ALL|MSG_F_DOWN, "Cleaned %d user attribute slots (reduced to %d): %d deleted, %d renumbered (%d objects and %d individual attrs touched). Table size reduced from %d to %d.", n_oldtotal - A_USER_START, mudstate.attr_next - A_USER_START, n_deleted, n_renumbered, n_objt, n_atrt, n_oldtop, anum_alc_top );
} else {
notify_check( player, player, MSG_PUP_ALWAYS|MSG_ME_ALL|MSG_F_DOWN, "Cleaned %d attributes (now %d): %d deleted, %d renumbered (%d objects and %d individual attrs touched).", n_oldtotal, mudstate.attr_next, n_deleted, n_renumbered, n_objt, n_atrt );
}
raw_broadcast( 0, "GAME: Database cleaning complete." );
}