Return to DirEntry.h CVS log

Up to [Development] / fam / fam

Annotation of fam/fam/DirEntry.h, Revision 1.1.1.1

1.1       trev        1: //  Copyright (C) 1999 Silicon Graphics, Inc.  All Rights Reserved.
                      2: //
                      3: //  This program is free software; you can redistribute it and/or modify it
                      4: //  under the terms of version 2 of the GNU General Public License as
                      5: //  published by the Free Software Foundation.
                      6: //
                      7: //  This program is distributed in the hope that it would be useful, but
                      8: //  WITHOUT ANY WARRANTY; without even the implied warranty of
                      9: //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  Further, any
                     10: //  license provided herein, whether implied or otherwise, is limited to
                     11: //  this program in accordance with the express provisions of the GNU
                     12: //  General Public License.  Patent licenses, if any, provided herein do not
                     13: //  apply to combinations of this program with other product or programs, or
                     14: //  any other product whatsoever.  This program is distributed without any
                     15: //  warranty that the program is delivered free of the rightful claim of any
                     16: //  third person by way of infringement or the like.  See the GNU General
                     17: //  Public License for more details.
                     18: //
                     19: //  You should have received a copy of the GNU General Public License along
                     20: //  with this program; if not, write the Free Software Foundation, Inc., 59
                     21: //  Temple Place - Suite 330, Boston MA 02111-1307, USA.
                     22:
                     23: #ifndef DirEntry_included
                     24: #define DirEntry_included
                     25:
                     26: #include "Interest.h"
                     27:
                     28: class Directory;
                     29:
                     30: //  A DirEntry is a subclass of Interest that represents an entry
                     31: //  in a Directory that a Client has expressed an interest in.
                     32: //
                     33: //  A DirEntry overrides a lot of Interest's methods and forwards
                     34: //  them to its parent directory.
                     35: //
                     36: //  DirEntries are stored on a singly-linked list.  The head of the
                     37: //  list is in the parent.  Each DirEntry also has a parent pointer.
                     38: //  The entries in the list are in the order they're returned by
                     39: //  readdir().
                     40:
                     41: class DirEntry : public Interest {
                     42:
                     43: public:
                     44:
                     45:     virtual bool active() const;
                     46:     virtual bool scan(Interest * = 0);
                     47:     virtual void scan_no_chdir();
                     48:     virtual void unscan(Interest * = 0);
                     49:     virtual bool do_scan();
                     50:
                     51: protected:
                     52:
                     53:     void post_event(const Event&, const char * = 0);
                     54:
                     55: private:
                     56:
                     57:     //  Instance Variables
                     58:
                     59:     Directory *const parent;
                     60:     DirEntry *next;
                     61:
                     62:     bool need_to_chdir;
                     63:
                     64:     //  Private Instance Methods
                     65:
                     66:     DirEntry(const char *name, Directory *parent, DirEntry *next);
                     67: 				// Only a Directory may create a DirEntry.
                     68:     virtual ~DirEntry();
                     69:
                     70:     virtual void notify_created(Interest *);
                     71:     virtual void notify_deleted(Interest *);
                     72:
                     73: friend class Directory;
                     74: friend class DirectoryScanner;
                     75:
                     76: };
                     77:
                     78: #endif /* !DirEntry_included */