1 // TortoiseSVN - a Windows shell extension for easy version control
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3 // Copyright (C) 2003-2008 - TortoiseSVN
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5 // This program is free software; you can redistribute it and/or
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6 // modify it under the terms of the GNU General Public License
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7 // as published by the Free Software Foundation; either version 2
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8 // of the License, or (at your option) any later version.
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10 // This program is distributed in the hope that it will be useful,
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11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 // GNU General Public License for more details.
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15 // You should have received a copy of the GNU General Public License
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16 // along with this program; if not, write to the Free Software Foundation,
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17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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20 #include "RemoveSimpleChanges.h"
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21 #include "FullGraphNode.h"
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22 #include "VisibleGraphNode.h"
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26 CRemoveSimpleChanges::CRemoveSimpleChanges (CRevisionGraphOptionList& list)
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31 // implement IRevisionGraphOption: This option is negated.
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33 bool CRemoveSimpleChanges::IsActive() const
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35 return !IsSelected();
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38 // implement ICopyFilterOption (pre-filter most nodes)
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40 ICopyFilterOption::EResult
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41 CRemoveSimpleChanges::ShallRemove (const CFullGraphNode* node) const
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43 // "M", not a branch point and will not become one due to removed copy-froms
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45 bool nodeIsModificationOnly
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46 = (node->GetClassification().Is (CNodeClassification::IS_MODIFIED))
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47 && (node->GetFirstCopyTarget() == NULL);
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49 const CFullGraphNode* next = node->GetNext();
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50 bool nextIsModificationOnly
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52 && (next->GetClassification().Is (CNodeClassification::IS_MODIFIED))
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53 && (next->GetFirstCopyTarget() == NULL);
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55 return nodeIsModificationOnly && nextIsModificationOnly
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56 ? ICopyFilterOption::REMOVE_NODE
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57 : ICopyFilterOption::KEEP_NODE;
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60 // implement IModificationOption (post-filter unused copy-from nodes)
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62 void CRemoveSimpleChanges::Apply (CVisibleGraph* graph, CVisibleGraphNode* node)
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64 // "M", not a branch point, not the HEAD
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66 if ( (node->GetClassification().Matches
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67 ( CNodeClassification::IS_MODIFIED
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68 , static_cast<DWORD>(CNodeClassification::MUST_BE_PRESERVED)))
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69 && (node->GetFirstTag() == NULL)
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70 && (node->GetFirstCopyTarget() == NULL))
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72 node->DropNode (graph);
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