src/TortoiseProc/RevisionGraph/RemoveDeletedBranches.cpp

   1 // TortoiseSVN - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2003-2008 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #include "StdAfx.h"
  20 #include "RemoveDeletedBranches.h"
  21 #include "FullGraphNode.h"
  22 #include "VisibleGraphNode.h"
  23
  24 // construction
  25
  26 CRemoveDeletedBranches::CRemoveDeletedBranches (CRevisionGraphOptionList& list)
  27     : inherited (list)
  28 {
  29 }
  30
  31 // implement ICopyFilterOption
  32
  33 ICopyFilterOption::EResult
  34 CRemoveDeletedBranches::ShallRemove (const CFullGraphNode* node) const
  35 {
  36     // "M", not a branch point, not the HEAD
  37
  38     return node->GetClassification().Is (CNodeClassification::ALL_COPIES_DELETED)
  39          ? ICopyFilterOption::REMOVE_SUBTREE
  40          : ICopyFilterOption::KEEP_NODE;
  41 }
  42
  43 /// implement IModificationOption (post-filter deleted non-tagged branches)
  44
  45 void CRemoveDeletedBranches::Apply (CVisibleGraph* graph, CVisibleGraphNode* node)
  46 {
  47     if (   (node->GetNext() == NULL)
  48         && (node->GetFirstCopyTarget() == NULL)
  49         && (node->GetFirstTag() == NULL)
  50         && (node->GetClassification().Is (CNodeClassification::PATH_ONLY_DELETED)))
  51     {
  52         node->DropNode (graph, true);
  53     }
  54 }