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1 | // Created on: 2002-10-31 |
2 | // Created by: Michael SAZONOV |
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3 | // Copyright (c) 2002-2014 OPEN CASCADE SAS |
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4 | // |
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5 | // This file is part of Open CASCADE Technology software library. |
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6 | // |
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7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
11 | // distribution for complete text of the license and disclaimer of any warranty. |
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12 | // |
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13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
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15 | |
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16 | |
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17 | #include <BinLDrivers.hxx> |
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18 | #include <BinLDrivers_DocumentRetrievalDriver.hxx> |
19 | #include <BinLDrivers_DocumentSection.hxx> |
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20 | #include <BinLDrivers_Marker.hxx> |
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21 | #include <BinMDataStd.hxx> |
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22 | #include <BinMDF_ADriver.hxx> |
23 | #include <BinMDF_ADriverTable.hxx> |
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24 | #include <BinObjMgt_Persistent.hxx> |
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25 | #include <CDM_Application.hxx> |
26 | #include <CDM_Document.hxx> |
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27 | #include <Message_Messenger.hxx> |
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28 | #include <FSD_BinaryFile.hxx> |
29 | #include <FSD_FileHeader.hxx> |
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30 | #include <OSD_OpenFile.hxx> |
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31 | #include <PCDM_Document.hxx> |
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32 | #include <PCDM_ReadWriter.hxx> |
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33 | #include <Standard_ErrorHandler.hxx> |
34 | #include <Standard_Stream.hxx> |
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35 | #include <Standard_Type.hxx> |
36 | #include <Storage_HeaderData.hxx> |
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37 | #include <Storage_Schema.hxx> |
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38 | #include <TCollection_AsciiString.hxx> |
39 | #include <TCollection_ExtendedString.hxx> |
40 | #include <TDF_Attribute.hxx> |
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41 | #include <TDF_Data.hxx> |
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42 | #include <TDF_Label.hxx> |
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43 | #include <TDocStd_Document.hxx> |
44 | #include <TDocStd_Owner.hxx> |
45 | |
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46 | IMPLEMENT_STANDARD_RTTIEXT(BinLDrivers_DocumentRetrievalDriver,PCDM_RetrievalDriver) |
47 | |
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48 | #define SHAPESECTION_POS "SHAPE_SECTION_POS:" |
49 | #define SIZEOFSHAPELABEL 18 |
50 | |
51 | #define DATATYPE_MIGRATION |
52 | //#define DATATYPE_MIGRATION_DEB |
53 | //======================================================================= |
54 | //function : BinLDrivers_DocumentRetrievalDriver |
55 | //purpose : Constructor |
56 | //======================================================================= |
57 | |
58 | BinLDrivers_DocumentRetrievalDriver::BinLDrivers_DocumentRetrievalDriver () |
59 | { |
60 | myReaderStatus = PCDM_RS_OK; |
61 | } |
62 | |
63 | //======================================================================= |
64 | //function : CreateDocument |
65 | //purpose : pure virtual method definition |
66 | //======================================================================= |
67 | |
68 | Handle(CDM_Document) BinLDrivers_DocumentRetrievalDriver::CreateDocument() |
69 | { |
70 | return new TDocStd_Document(PCDM_RetrievalDriver::GetFormat()); |
71 | } |
72 | |
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73 | //======================================================================= |
74 | //function : Read |
75 | //purpose : |
76 | //======================================================================= |
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77 | void BinLDrivers_DocumentRetrievalDriver::Read |
78 | (const TCollection_ExtendedString& theFileName, |
79 | const Handle(CDM_Document)& theNewDocument, |
80 | const Handle(CDM_Application)& theApplication) |
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81 | { |
82 | std::ifstream aFileStream; |
83 | OSD_OpenStream (aFileStream, theFileName, std::ios::in | std::ios::binary); |
84 | |
85 | if (aFileStream.is_open() && aFileStream.good()) |
86 | { |
87 | Handle(Storage_Data) dData; |
88 | TCollection_ExtendedString aFormat = PCDM_ReadWriter::FileFormat (aFileStream, dData); |
89 | |
90 | Read (aFileStream, dData, theNewDocument, theApplication); |
91 | } |
92 | else |
93 | { |
94 | myReaderStatus = PCDM_RS_OpenError; |
95 | } |
96 | } |
97 | |
98 | #define MODIFICATION_COUNTER "MODIFICATION_COUNTER: " |
99 | #define REFERENCE_COUNTER "REFERENCE_COUNTER: " |
100 | |
101 | #define START_TYPES "START_TYPES" |
102 | #define END_TYPES "END_TYPES" |
103 | |
104 | //======================================================================= |
105 | //function : Read |
106 | //purpose : |
107 | //======================================================================= |
108 | void BinLDrivers_DocumentRetrievalDriver::Read (Standard_IStream& theIStream, |
109 | const Handle(Storage_Data)& theStorageData, |
110 | const Handle(CDM_Document)& theDoc, |
111 | const Handle(CDM_Application)& theApplication) |
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112 | { |
113 | myReaderStatus = PCDM_RS_DriverFailure; |
114 | myMsgDriver = theApplication -> MessageDriver(); |
115 | |
116 | const TCollection_ExtendedString aMethStr |
117 | ("BinLDrivers_DocumentRetrievalDriver: "); |
118 | |
119 | Handle(TDocStd_Document) aDoc = |
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120 | Handle(TDocStd_Document)::DownCast(theDoc); |
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121 | if (aDoc.IsNull()) { |
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122 | #ifdef OCCT_DEBUG |
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123 | myMsgDriver->Send (aMethStr + "error: null document", Message_Fail); |
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124 | #endif |
125 | myReaderStatus = PCDM_RS_NoDocument; |
126 | return; |
127 | } |
128 | |
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129 | // 1. the information section |
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130 | Handle(Storage_HeaderData) aHeaderData; |
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131 | |
132 | if (!theStorageData.IsNull()) |
133 | { |
134 | aHeaderData = theStorageData->HeaderData(); |
135 | } |
136 | |
137 | if (!aHeaderData.IsNull()) |
138 | { |
139 | for (Standard_Integer i = 1; i <= aHeaderData->UserInfo().Length(); i++) |
140 | { |
141 | const TCollection_AsciiString& aLine = aHeaderData->UserInfo().Value(i); |
142 | |
143 | if(aLine.Search(REFERENCE_COUNTER) != -1) |
144 | { |
145 | theDoc->SetReferenceCounter (aLine.Token(" ", 2).IntegerValue()); |
146 | } |
147 | else if(aLine.Search(MODIFICATION_COUNTER) != -1) |
148 | { |
149 | theDoc->SetModifications (aLine.Token(" ", 2).IntegerValue()); |
150 | } |
151 | } |
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152 | } |
153 | |
154 | // 1.a Version of writer |
155 | if (!aHeaderData->StorageVersion().IsIntegerValue()) { |
156 | // file has no format version |
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157 | myMsgDriver->Send (aMethStr + "error: file has no format version", Message_Fail); |
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158 | myReaderStatus = PCDM_RS_FormatFailure; |
159 | return; |
160 | } |
161 | Standard_Integer aFileVer = aHeaderData->StorageVersion().IntegerValue(); |
162 | Standard_Integer aCurrVer = BinLDrivers::StorageVersion().IntegerValue(); |
163 | // maintain one-way compatibility starting from version 2+ |
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164 | if (!CheckDocumentVersion(aFileVer, aCurrVer)) { |
165 | myReaderStatus = PCDM_RS_NoVersion; |
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166 | // file was written with another version |
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167 | myMsgDriver->Send (aMethStr + "error: wrong file version: " + |
168 | aHeaderData->StorageVersion() + " while current is " + |
169 | BinLDrivers::StorageVersion(), Message_Fail); |
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170 | return; |
171 | } |
172 | |
173 | // 1.b Retrieve the Types table |
174 | TColStd_SequenceOfAsciiString aTypeNames; //Sequence of types in file |
175 | const TColStd_SequenceOfAsciiString& aUserInfo = aHeaderData->UserInfo(); |
176 | Standard_Boolean begin = Standard_False; |
177 | Standard_Integer i; |
178 | for (i=1; i <= aUserInfo.Length(); i++) { |
179 | //const TCollection_AsciiString& aStr = aUserInfo(i); |
180 | TCollection_AsciiString aStr = aUserInfo(i); |
181 | if (aStr == START_TYPES) |
182 | begin = Standard_True; |
183 | else if (aStr == END_TYPES) |
184 | break; |
185 | else if (begin) { |
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186 | if ( aFileVer < 8 ) { |
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187 | #ifdef DATATYPE_MIGRATION |
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188 | TCollection_AsciiString newName; |
189 | if(Storage_Schema::CheckTypeMigration(aStr, newName)) { |
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190 | #ifdef OCCT_DEBUG |
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191 | cout << "CheckTypeMigration:OldType = " <<aStr << " Len = "<<aStr.Length()<<endl; |
192 | cout << "CheckTypeMigration:NewType = " <<newName << " Len = "<< newName.Length()<<endl; |
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193 | #endif |
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194 | aStr = newName; |
195 | } |
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196 | #endif |
197 | } |
198 | aTypeNames.Append (aStr); |
199 | } |
200 | } |
201 | if (myDrivers.IsNull()) |
202 | myDrivers = AttributeDrivers (myMsgDriver); |
203 | myDrivers->AssignIds (aTypeNames); |
204 | |
205 | // recognize types not supported by drivers |
206 | myMapUnsupported.Clear(); |
207 | for (i=1; i <= aTypeNames.Length(); i++) |
208 | if (myDrivers->GetDriver(i).IsNull()) |
209 | myMapUnsupported.Add(i); |
210 | if (!myMapUnsupported.IsEmpty()) { |
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211 | myMsgDriver->Send (aMethStr + "warning: " |
212 | "the following attributes have no driver:", Message_Warning); |
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213 | for (i=1; i <= aTypeNames.Length(); i++) |
214 | if (myMapUnsupported.Contains(i)) |
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215 | myMsgDriver->Send (aTypeNames(i), Message_Warning); |
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216 | } |
217 | |
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218 | // propagate the opened document version to data drivers |
219 | PropagateDocumentVersion(aFileVer); |
220 | |
221 | // 2. Read document contents |
222 | |
223 | // 2a. Retrieve data from the stream: |
224 | myRelocTable.Clear(); |
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225 | myRelocTable.SetHeaderData(aHeaderData); |
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226 | mySections.Clear(); |
227 | myPAtt.Init(); |
228 | Handle(TDF_Data) aData = new TDF_Data(); |
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229 | streampos aDocumentPos = -1; |
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230 | |
231 | // 2b. Read the TOC of Sections |
232 | if (aFileVer >= 3) { |
233 | BinLDrivers_DocumentSection aSection; |
234 | do { |
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235 | BinLDrivers_DocumentSection::ReadTOC (aSection, theIStream); |
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236 | mySections.Append(aSection); |
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237 | } while(!aSection.Name().IsEqual((Standard_CString)SHAPESECTION_POS) && !theIStream.eof()); |
238 | |
239 | if (theIStream.eof()) { |
240 | // There is no shape section in the file. |
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241 | myMsgDriver->Send (aMethStr + "error: shape section is not found", Message_Fail); |
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242 | myReaderStatus = PCDM_RS_ReaderException; |
243 | return; |
244 | } |
245 | |
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246 | aDocumentPos = theIStream.tellg(); // position of root label |
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247 | |
248 | BinLDrivers_VectorOfDocumentSection::Iterator anIterS (mySections); |
249 | for (; anIterS.More(); anIterS.Next()) { |
250 | BinLDrivers_DocumentSection& aCurSection = anIterS.ChangeValue(); |
251 | if (aCurSection.IsPostRead() == Standard_False) { |
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252 | theIStream.seekg ((streampos) aCurSection.Offset()); |
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253 | if (aCurSection.Name().IsEqual ((Standard_CString)SHAPESECTION_POS)) |
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254 | ReadShapeSection (aCurSection, theIStream); |
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255 | else |
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256 | ReadSection (aCurSection, theDoc, theIStream); |
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257 | } |
258 | } |
259 | } else { //aFileVer < 3 |
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260 | aDocumentPos = theIStream.tellg(); // position of root label |
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261 | |
262 | // retrieve SHAPESECTION_POS string |
263 | char aShapeSecLabel[SIZEOFSHAPELABEL + 1]; |
264 | aShapeSecLabel[SIZEOFSHAPELABEL] = 0x00; |
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265 | theIStream.read ((char*)&aShapeSecLabel, SIZEOFSHAPELABEL);// SHAPESECTION_POS |
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266 | TCollection_AsciiString aShapeLabel(aShapeSecLabel); |
267 | // detect if a file was written in old fashion (version 2 without shapes) |
268 | // and if so then skip reading ShapeSection |
269 | if (aShapeLabel.Length() > 0) { |
270 | // version 2+(with shapes) and higher goes here |
271 | if(aShapeLabel.Length() <= 0 || aShapeLabel != SHAPESECTION_POS) { |
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272 | myMsgDriver->Send (aMethStr + "error: Format failure", Message_Fail); |
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273 | myReaderStatus = PCDM_RS_FormatFailure; |
274 | return; |
275 | } |
276 | |
277 | // retrieve ShapeSection Position |
278 | Standard_Integer aShapeSectionPos; // go to ShapeSection |
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279 | theIStream.read ((char*)&aShapeSectionPos, sizeof(Standard_Integer)); |
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280 | |
281 | #if DO_INVERSE |
282 | aShapeSectionPos = InverseInt (aShapeSectionPos); |
283 | #endif |
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284 | #ifdef OCCT_DEBUG |
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285 | cout <<"aShapeSectionPos = " <<aShapeSectionPos <<endl; |
286 | #endif |
287 | if(aShapeSectionPos) { |
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288 | aDocumentPos = theIStream.tellg(); |
289 | theIStream.seekg((streampos) aShapeSectionPos); |
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290 | |
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291 | CheckShapeSection(aShapeSectionPos, theIStream); |
292 | // Read Shapes |
293 | BinLDrivers_DocumentSection aCurSection; |
294 | ReadShapeSection (aCurSection, theIStream, Standard_False); |
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295 | } |
296 | } |
297 | } // end of reading Sections or shape section |
298 | |
299 | // Return to read of the Document structure |
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300 | theIStream.seekg(aDocumentPos); |
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301 | |
302 | // read the header (tag) of the root label |
303 | Standard_Integer aTag; |
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304 | theIStream.read ((char*)&aTag, sizeof(Standard_Integer)); |
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305 | |
306 | // read sub-tree of the root label |
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307 | Standard_Integer nbRead = ReadSubTree (theIStream, aData->Root()); |
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308 | Clear(); |
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309 | |
310 | if (nbRead > 0) { |
311 | // attach data to the document |
312 | aDoc->SetData (aData); |
313 | TDocStd_Owner::SetDocument (aData, aDoc); |
314 | aDoc->SetComments(aHeaderData->Comments()); |
315 | myReaderStatus = PCDM_RS_OK; |
316 | } |
317 | |
318 | // Read Sections (post-reading type) |
319 | if (aFileVer >= 3) { |
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320 | BinLDrivers_VectorOfDocumentSection::Iterator aSectIter (mySections); |
321 | for (; aSectIter.More(); aSectIter.Next()) { |
322 | BinLDrivers_DocumentSection& aCurSection = aSectIter.ChangeValue(); |
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323 | if (aCurSection.IsPostRead()) { |
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324 | theIStream.seekg ((streampos) aCurSection.Offset()); |
325 | ReadSection (aCurSection, theDoc, theIStream); |
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326 | } |
327 | } |
328 | } |
329 | } |
330 | |
331 | //======================================================================= |
332 | //function : ReadSubTree |
333 | //purpose : |
334 | //======================================================================= |
335 | |
336 | Standard_Integer BinLDrivers_DocumentRetrievalDriver::ReadSubTree |
337 | (Standard_IStream& theIS, |
338 | const TDF_Label& theLabel) |
339 | { |
340 | Standard_Integer nbRead = 0; |
341 | static TCollection_ExtendedString aMethStr |
342 | ("BinLDrivers_DocumentRetrievalDriver: "); |
343 | |
344 | // Read attributes: |
345 | theIS >> myPAtt; |
346 | while (theIS && myPAtt.TypeId() > 0 && // not an end marker ? |
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347 | myPAtt.Id() > 0 && // not a garbage ? |
348 | !theIS.eof()) { |
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349 | // get a driver according to TypeId |
350 | Handle(BinMDF_ADriver) aDriver = myDrivers->GetDriver (myPAtt.TypeId()); |
351 | if (!aDriver.IsNull()) { |
352 | // create transient attribute |
353 | nbRead++; |
354 | Standard_Integer anID = myPAtt.Id(); |
355 | Handle(TDF_Attribute) tAtt; |
356 | Standard_Boolean isBound = myRelocTable.IsBound(anID); |
357 | if (isBound) |
358 | tAtt = Handle(TDF_Attribute)::DownCast(myRelocTable.Find(anID)); |
359 | else |
360 | tAtt = aDriver->NewEmpty(); |
361 | if (tAtt->Label().IsNull()) |
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362 | theLabel.AddAttribute (tAtt); |
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363 | else |
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364 | myMsgDriver->Send (aMethStr + |
365 | "warning: attempt to attach attribute " + |
366 | aDriver->TypeName() + " to a second label", Message_Warning); |
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367 | |
368 | Standard_Boolean ok = aDriver->Paste (myPAtt, tAtt, myRelocTable); |
369 | if (!ok) { |
370 | // error converting persistent to transient |
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371 | myMsgDriver->Send (aMethStr + "warning: failure reading attribute " + |
372 | aDriver->TypeName(), Message_Warning); |
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373 | } |
374 | else if (!isBound) |
375 | myRelocTable.Bind (anID, tAtt); |
376 | } |
377 | else if (!myMapUnsupported.Contains(myPAtt.TypeId())) |
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378 | myMsgDriver->Send (aMethStr + "warning: type ID not registered in header: " |
379 | + myPAtt.TypeId(), Message_Warning); |
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380 | |
381 | // read next attribute |
382 | theIS >> myPAtt; |
383 | } |
384 | if (!theIS || myPAtt.TypeId() != BinLDrivers_ENDATTRLIST) { |
385 | // unexpected EOF or garbage data |
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386 | myMsgDriver->Send (aMethStr + "error: unexpected EOF or garbage data", Message_Fail); |
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387 | myReaderStatus = PCDM_RS_UnrecognizedFileFormat; |
388 | return -1; |
389 | } |
390 | |
391 | // Read children: |
392 | // read the tag of a child label |
393 | Standard_Integer aTag = BinLDrivers_ENDLABEL; |
394 | theIS.read ((char*) &aTag, sizeof(Standard_Integer)); |
395 | #if DO_INVERSE |
396 | aTag = InverseInt (aTag); |
397 | #endif |
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398 | while (theIS && aTag >= 0 && !theIS.eof()) { // not an end marker ? |
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399 | // create sub-label |
400 | TDF_Label aLab = theLabel.FindChild (aTag, Standard_True); |
401 | |
402 | // read sub-tree |
403 | Standard_Integer nbSubRead = ReadSubTree(theIS, aLab); |
404 | // check for error |
405 | if (nbSubRead == -1) |
406 | return -1; |
407 | nbRead += nbSubRead; |
408 | |
409 | // read the tag of the next child |
410 | theIS.read ((char*) &aTag, sizeof(Standard_Integer)); |
411 | #if DO_INVERSE |
412 | aTag = InverseInt (aTag); |
413 | #endif |
414 | } |
415 | if (aTag != BinLDrivers_ENDLABEL) { |
416 | // invalid end label marker |
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417 | myMsgDriver->Send (aMethStr + "error: invalid end label marker", Message_Fail); |
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418 | myReaderStatus = PCDM_RS_UnrecognizedFileFormat; |
419 | return -1; |
420 | } |
421 | |
422 | return nbRead; |
423 | } |
424 | |
425 | //======================================================================= |
426 | //function : AttributeDrivers |
427 | //purpose : |
428 | //======================================================================= |
429 | |
430 | Handle(BinMDF_ADriverTable) BinLDrivers_DocumentRetrievalDriver::AttributeDrivers |
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431 | (const Handle(Message_Messenger)& theMessageDriver) |
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432 | { |
433 | return BinLDrivers::AttributeDrivers (theMessageDriver); |
434 | } |
435 | |
7fd59977 |
436 | //======================================================================= |
437 | //function : ReadSection |
438 | //purpose : |
439 | //======================================================================= |
440 | |
441 | void BinLDrivers_DocumentRetrievalDriver::ReadSection |
442 | (BinLDrivers_DocumentSection& /*theSection*/, |
443 | const Handle(CDM_Document)& /*theDocument*/, |
444 | Standard_IStream& /*theIS*/) |
445 | { |
446 | // empty; should be redefined in subclasses |
447 | } |
448 | |
449 | //======================================================================= |
450 | //function : ReadShapeSection |
451 | //purpose : |
452 | //======================================================================= |
453 | |
454 | void BinLDrivers_DocumentRetrievalDriver::ReadShapeSection |
455 | (BinLDrivers_DocumentSection& theSection, |
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456 | Standard_IStream& /*theIS*/, |
457 | const Standard_Boolean isMess) |
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458 | |
459 | { |
460 | if(isMess && theSection.Length()) { |
461 | const TCollection_ExtendedString aMethStr ("BinLDrivers_DocumentRetrievalDriver: "); |
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462 | myMsgDriver->Send (aMethStr + "warning: Geometry is not supported by Lite schema. ", Message_Warning); |
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463 | } |
464 | } |
465 | |
466 | //======================================================================= |
467 | //function : CheckShapeSection |
468 | //purpose : |
469 | //======================================================================= |
470 | void BinLDrivers_DocumentRetrievalDriver::CheckShapeSection( |
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471 | const Storage_Position& ShapeSectionPos, |
472 | Standard_IStream& IS) |
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473 | { |
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474 | if (!IS.eof()) |
475 | { |
105aae76 |
476 | const std::streamoff endPos = IS.rdbuf()->pubseekoff(0L, std::ios_base::end, std::ios_base::in); |
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477 | #ifdef OCCT_DEBUG |
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478 | cout << "endPos = " << endPos <<endl; |
479 | #endif |
480 | if(ShapeSectionPos != endPos) { |
481 | const TCollection_ExtendedString aMethStr ("BinLDrivers_DocumentRetrievalDriver: "); |
83ae3591 |
482 | myMsgDriver->Send (aMethStr + "warning: Geometry is not supported by Lite schema. ", Message_Warning); |
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483 | } |
484 | } |
485 | } |
486 | |
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487 | //======================================================================= |
488 | //function : Clear |
489 | //purpose : |
490 | //======================================================================= |
491 | void BinLDrivers_DocumentRetrievalDriver::Clear() |
492 | { |
493 | myPAtt.Destroy(); // free buffer |
494 | myRelocTable.Clear(); |
495 | myMapUnsupported.Clear(); |
496 | } |
497 | |
7fd59977 |
498 | //======================================================================= |
499 | //function : PropagateDocumentVersion |
500 | //purpose : |
501 | //======================================================================= |
502 | void BinLDrivers_DocumentRetrievalDriver::PropagateDocumentVersion(const Standard_Integer theDocVersion ) |
503 | { |
504 | BinMDataStd::SetDocumentVersion(theDocVersion); |
505 | } |
d9ff84e8 |
506 | |
507 | //======================================================================= |
508 | //function : CheckDocumentVersion |
509 | //purpose : |
510 | //======================================================================= |
511 | Standard_Boolean BinLDrivers_DocumentRetrievalDriver::CheckDocumentVersion( |
512 | const Standard_Integer theFileVersion, |
513 | const Standard_Integer theCurVersion) |
514 | { |
515 | if (theFileVersion < 2 || theFileVersion > theCurVersion) { |
516 | // file was written with another version |
517 | return Standard_False; |
518 | } |
519 | return Standard_True; |
520 | } |