int bdb_idl_insert( ID *ids, ID id )
{
unsigned x;
#if IDL_DEBUG > 1
Debug( LDAP_DEBUG_ANY, "insert: %04lx at %d\n", (long) id, x, 0 );
idl_dump( ids );
#elif IDL_DEBUG > 0
idl_check( ids );
#endif
if (BDB_IDL_IS_RANGE( ids )) {
/* if already in range, treat as a dup */
if (id >= BDB_IDL_RANGE_FIRST(ids) && id <= BDB_IDL_RANGE_LAST(ids))
return -1;
if (id < BDB_IDL_RANGE_FIRST(ids))
ids[1] = id;
else if (id > BDB_IDL_RANGE_LAST(ids))
ids[2] = id;
return 0;
}
x = bdb_idl_search( ids, id );
assert( x > 0 );
if( x < 1 ) {
/* internal error */
return -2;
}
if ( x <= ids[0] && ids[x] == id ) {
/* duplicate */
return -1;
}
if ( ++ids[0] >= BDB_IDL_DB_MAX ) {
if( id < ids[1] ) {
ids[1] = id;
ids[2] = ids[ids[0]-1];
} else if ( ids[ids[0]-1] < id ) {
ids[2] = id;
} else {
ids[2] = ids[ids[0]-1];
}
ids[0] = NOID;
} else {
/* insert id */
AC_MEMCPY( &ids[x+1], &ids[x], (ids[0]-x) * sizeof(ID) );
ids[x] = id;
}
#if IDL_DEBUG > 1
idl_dump( ids );
#elif IDL_DEBUG > 0
idl_check( ids );
#endif
return 0;
}
/* Add one ID to an unsorted list. We ensure that the first element is the
* minimum and the last element is the maximum, for fast range compaction.
* this means IDLs up to length 3 are always sorted...
*/
int bdb_idl_append_one( ID *ids, ID id )
{
if (BDB_IDL_IS_RANGE( ids )) {
/* if already in range, treat as a dup */
if (id >= BDB_IDL_RANGE_FIRST(ids) && id <= BDB_IDL_RANGE_LAST(ids))
return -1;
if (id < BDB_IDL_RANGE_FIRST(ids))
ids[1] = id;
else if (id > BDB_IDL_RANGE_LAST(ids))
ids[2] = id;
return 0;
}
if ( ids[0] ) {
ID tmp;
if (id < ids[1]) {
tmp = ids[1];
ids[1] = id;
id = tmp;
}
if ( ids[0] > 1 && id < ids[ids[0]] ) {
tmp = ids[ids[0]];
ids[ids[0]] = id;
id = tmp;
}
}
ids[0]++;
if ( ids[0] >= BDB_IDL_UM_MAX ) {
ids[0] = NOID;
ids[2] = id;
} else {
ids[ids[0]] = id;
}
return 0;
}
static void idl_check( ID *ids )
{
if( BDB_IDL_IS_RANGE( ids ) ) {
assert( BDB_IDL_RANGE_FIRST(ids) <= BDB_IDL_RANGE_LAST(ids) );
} else {
ID i;
for( i=1; i < ids[0]; i++ ) {
assert( ids[i+1] > ids[i] );
}
}
}
static void idl_dump( ID *ids )
{
if( BDB_IDL_IS_RANGE( ids ) ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, INFO, "IDL: range (%ld - %ld)\n",
(long) BDB_IDL_RANGE_FIRST( ids ),
(long) BDB_IDL_RANGE_LAST( ids ), 0 );
#else
Debug( LDAP_DEBUG_ANY,
"IDL: range ( %ld - %ld )\n",
(long) BDB_IDL_RANGE_FIRST( ids ),
(long) BDB_IDL_RANGE_LAST( ids ) );
#endif
} else {
ID i;
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, INFO, "IDL: size %ld", (long) ids[0], 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "IDL: size %ld", (long) ids[0], 0, 0 );
#endif
for( i=1; i<=ids[0]; i++ ) {
if( i % 16 == 1 ) {
Debug( LDAP_DEBUG_ANY, "\n", 0, 0, 0 );
}
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, INFO, "%02lx",(long)ids[i], 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, " %02lx", (long) ids[i], 0, 0 );
#endif
}
Debug( LDAP_DEBUG_ANY, "\n", 0, 0, 0 );
}
idl_check( ids );
}
static void idl_dump( ID *ids )
{
if( BDB_IDL_IS_RANGE( ids ) ) {
Debug( LDAP_DEBUG_ANY,
"IDL: range ( %ld - %ld )\n",
(long) BDB_IDL_RANGE_FIRST( ids ),
(long) BDB_IDL_RANGE_LAST( ids ) );
} else {
ID i;
Debug( LDAP_DEBUG_ANY, "IDL: size %ld", (long) ids[0], 0, 0 );
for( i=1; i<=ids[0]; i++ ) {
if( i % 16 == 1 ) {
Debug( LDAP_DEBUG_ANY, "\n", 0, 0, 0 );
}
Debug( LDAP_DEBUG_ANY, " %02lx", (long) ids[i], 0, 0 );
}
Debug( LDAP_DEBUG_ANY, "\n", 0, 0, 0 );
}
idl_check( ids );
}
/*
* idl_intersection - return a = a intersection b
*/
int
bdb_idl_intersection(
ID *a,
ID *b )
{
ID ida, idb;
ID idmax, idmin;
ID cursora = 0, cursorb = 0, cursorc;
int swap = 0;
if ( BDB_IDL_IS_ZERO( a ) || BDB_IDL_IS_ZERO( b ) ) {
a[0] = 0;
return 0;
}
idmin = IDL_MAX( BDB_IDL_FIRST(a), BDB_IDL_FIRST(b) );
idmax = IDL_MIN( BDB_IDL_LAST(a), BDB_IDL_LAST(b) );
if ( idmin > idmax ) {
a[0] = 0;
return 0;
} else if ( idmin == idmax ) {
a[0] = 1;
a[1] = idmin;
return 0;
}
if ( BDB_IDL_IS_RANGE( a ) ) {
if ( BDB_IDL_IS_RANGE(b) ) {
/* If both are ranges, just shrink the boundaries */
a[1] = idmin;
a[2] = idmax;
return 0;
} else {
/* Else swap so that b is the range, a is a list */
ID *tmp = a;
a = b;
b = tmp;
swap = 1;
}
}
/* If a range completely covers the list, the result is
* just the list. If idmin to idmax is contiguous, just
* turn it into a range.
*/
if ( BDB_IDL_IS_RANGE( b )
&& BDB_IDL_RANGE_FIRST( b ) <= BDB_IDL_RANGE_FIRST( a )
&& BDB_IDL_RANGE_LAST( b ) >= BDB_IDL_RANGE_LAST( a ) ) {
if (idmax - idmin + 1 == a[0])
{
a[0] = NOID;
a[1] = idmin;
a[2] = idmax;
}
goto done;
}
/* Fine, do the intersection one element at a time.
* First advance to idmin in both IDLs.
*/
cursora = cursorb = idmin;
ida = bdb_idl_first( a, &cursora );
idb = bdb_idl_first( b, &cursorb );
cursorc = 0;
while( ida <= idmax || idb <= idmax ) {
if( ida == idb ) {
a[++cursorc] = ida;
ida = bdb_idl_next( a, &cursora );
idb = bdb_idl_next( b, &cursorb );
} else if ( ida < idb ) {
ida = bdb_idl_next( a, &cursora );
} else {
idb = bdb_idl_next( b, &cursorb );
}
}
a[0] = cursorc;
done:
if (swap)
BDB_IDL_CPY( b, a );
return 0;
}
