Fossil

** opened is slot 0.  The "temp" database is slot 1.  Attached databases
** are slots 2 and higher.
**
** Return -1 if zLabel does not match any open database.
*/
int db_database_slot(const char *zLabel){
  int iSlot = -1;
  int rc;
  Stmt q;
  if( g.db==0 ) return iSlot;
  rc = db_prepare_ignore_error(&q, "PRAGMA database_list");
  if( rc!=SQLITE_OK ) return iSlot;
  while( db_step(&q)==SQLITE_ROW ){
    if( fossil_strcmp(db_column_text(&q,1),zLabel)==0 ){
      iSlot = db_column_int(&q, 0);
      break;
    }
  }
  db_finalize(&q);