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1 | // Copyright (c) 2015 OPEN CASCADE SAS |
2 | // |
3 | // This file is part of Open CASCADE Technology software library. |
4 | // |
5 | // This library is free software; you can redistribute it and/or modify it under |
6 | // the terms of the GNU Lesser General Public License version 2.1 as published |
7 | // by the Free Software Foundation, with special exception defined in the file |
8 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
9 | // distribution for complete text of the license and disclaimer of any warranty. |
10 | // |
11 | // Alternatively, this file may be used under the terms of Open CASCADE |
12 | // commercial license or contractual agreement. |
13 | |
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14 | #include <StdLPersistent_Data.hxx> |
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15 | #include <StdObjMgt_ReadData.hxx> |
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16 | #include <StdObjMgt_WriteData.hxx> |
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17 | |
18 | #include <TDF_Data.hxx> |
19 | #include <TDF_Attribute.hxx> |
20 | |
21 | //! Create a transient label tree from persistent data |
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22 | class StdLPersistent_Data::Parser |
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23 | { |
24 | public: |
25 | //! Start parsing a persistent data. |
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26 | Parser (const TColStd_HArray1OfInteger& theLabels, |
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27 | const StdLPersistent_HArray1OfPersistent& theAttributes) |
28 | : myLabelsIter (theLabels) |
29 | , myAttribIter (theAttributes) {} |
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30 | |
31 | //! Fill a transient label with data. |
32 | void FillLabel (TDF_Label theLabel) |
33 | { |
34 | Standard_Integer i; |
35 | |
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36 | // Read attributes count |
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37 | myLabelsIter.Next(); |
38 | Standard_Integer anAttribCount = myLabelsIter.Value(); |
39 | |
40 | // Add attributes to the label |
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41 | for (i = 0; i < anAttribCount; i++) |
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42 | { |
43 | // read persistent attribute |
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44 | Handle(StdObjMgt_Persistent)& aPAttrib = myAttribIter.ChangeValue(); |
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45 | myAttribIter.Next(); |
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46 | // create transient attribute and add it to the label |
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47 | if (aPAttrib) { |
48 | Handle (TDF_Attribute) anAtt = aPAttrib->CreateAttribute(); |
49 | anAtt->SetID(); |
50 | theLabel.AddAttribute (anAtt); |
51 | } |
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52 | } |
53 | |
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54 | // Read child labels count |
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55 | myLabelsIter.Next(); |
56 | Standard_Integer aSubLabelsCount = myLabelsIter.Value(); |
57 | |
58 | // Create child labels |
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59 | for (i = 0; i < aSubLabelsCount; i++) |
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60 | { |
61 | // read tag of child label |
62 | myLabelsIter.Next(); |
63 | Standard_Integer aSubLabelTag = myLabelsIter.Value(); |
64 | |
65 | // create and fill child label |
66 | TDF_Label aSubLabel = theLabel.FindChild (aSubLabelTag, Standard_True); |
67 | FillLabel (aSubLabel); |
68 | } |
69 | } |
70 | |
71 | private: |
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72 | TColStd_HArray1OfInteger ::Iterator myLabelsIter; |
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73 | StdLPersistent_HArray1OfPersistent::Iterator myAttribIter; |
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74 | }; |
75 | |
76 | //======================================================================= |
77 | //function : Read |
78 | //purpose : Read persistent data from a file |
79 | //======================================================================= |
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80 | void StdLPersistent_Data::Read (StdObjMgt_ReadData& theReadData) |
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81 | { |
82 | theReadData >> myVersion >> myLabels >> myAttributes; |
83 | } |
84 | |
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85 | //======================================================================= |
86 | //function : Write |
87 | //purpose : Write persistent data to a file |
88 | //======================================================================= |
89 | void StdLPersistent_Data::Write (StdObjMgt_WriteData& theWriteData) const |
90 | { |
91 | theWriteData << myVersion << myLabels << myAttributes; |
92 | } |
93 | |
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94 | //======================================================================= |
95 | //function : Import |
96 | //purpose : Import transient data from the persistent data |
97 | //======================================================================= |
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98 | Handle(TDF_Data) StdLPersistent_Data::Import() const |
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99 | { |
100 | if (myLabels.IsNull() || myAttributes.IsNull()) |
101 | return NULL; |
102 | |
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103 | // Create tree of labels and add empty transient attributes to them |
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104 | Handle(TDF_Data) aData = new TDF_Data; |
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105 | Parser (*myLabels->Array(), *myAttributes->Array()).FillLabel (aData->Root()); |
106 | |
107 | // Import transient attribuites from persistent data |
108 | StdLPersistent_HArray1OfPersistent::Iterator anAttribIter (*myAttributes->Array()); |
109 | for (; anAttribIter.More(); anAttribIter.Next()) |
110 | { |
111 | Handle(StdObjMgt_Persistent)& aPAttrib = anAttribIter.ChangeValue(); |
112 | if (aPAttrib) |
113 | aPAttrib->ImportAttribute(); |
114 | } |
115 | |
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116 | return aData; |
117 | } |