EVOLUTION-MANAGER

Edit File: mitab_mapfile.cpp

/********************************************************************** * $Id: mitab_mapfile.cpp,v 1.46 2010-07-07 19:00:15 aboudreault Exp $ * * Name: mitab_mapfile.cpp * Project: MapInfo TAB Read/Write library * Language: C++ * Purpose: Implementation of the TABMAPFile class used to handle * reading/writing of the .MAP files at the MapInfo object level * Author: Daniel Morissette, dmorissette@dmsolutions.ca * ********************************************************************** * Copyright (c) 1999-2002, Daniel Morissette * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. ********************************************************************** * * $Log: mitab_mapfile.cpp,v $ * Revision 1.46 2010-07-07 19:00:15 aboudreault * Cleanup Win32 Compile Warnings (GDAL bug #2930) * * Revision 1.45 2010-01-08 22:02:51 aboudreault * Fixed error issued when reading empty TAB with spatial index active (bug 2136) * * Revision 1.44 2009-03-03 20:44:23 dmorissette * Use transparent brush in DumpSpatialIndexToMIF() * * Revision 1.43 2008/02/20 21:35:30 dmorissette * Added support for V800 COLLECTION of large objects (bug 1496) * * Revision 1.42 2008/02/01 19:36:31 dmorissette * Initial support for V800 REGION and MULTIPLINE (bug 1496) * * Revision 1.41 2007/11/08 18:57:56 dmorissette * Upgrade of OGR and CPL libs to the version from GDAL/OGR 1.4.3 * * Revision 1.40 2007/09/14 18:30:19 dmorissette * Fixed the splitting of object blocks with the optimized spatial * index mode that was producing files with misaligned bytes that * confused MapInfo (bug 1732) * * Revision 1.39 2007/07/11 15:51:52 dmorissette * Fixed duplicate 'int i' definition build errors in SplitObjBlock() * * Revision 1.38 2007/06/12 12:50:39 dmorissette * Use Quick Spatial Index by default until bug 1732 is fixed (broken files * produced by current coord block splitting technique). * * Revision 1.37 2007/06/05 13:23:57 dmorissette * Fixed memory leak when writing .TAB with new (optimized) spatial index * introduced in v1.6.0 (bug 1725) * * Revision 1.36 2007/03/21 21:15:56 dmorissette * Added SetQuickSpatialIndexMode() which generates a non-optimal spatial * index but results in faster write time (bug 1669) * * Revision 1.35 2006/11/28 18:49:08 dmorissette * Completed changes to split TABMAPObjectBlocks properly and produce an * optimal spatial index (bug 1585) * * Revision 1.34 2006/11/20 20:05:58 dmorissette * First pass at improving generation of spatial index in .map file (bug 1585) * New methods for insertion and splittung in the spatial index are done. * Also implemented a method to dump the spatial index to .mif/.mid * Still need to implement splitting of TABMapObjectBlock to get optimal * results. * * Revision 1.33 2006/09/05 23:05:08 dmorissette * Added TABMAPFile::DumpSpatialIndex() (bug 1585) * * Revision 1.32 2005/10/06 19:15:31 dmorissette * Collections: added support for reading/writing pen/brush/symbol ids and * for writing collection objects to .TAB/.MAP (bug 1126) * * Revision 1.31 2004/09/22 13:07:58 fwarmerdam * fixed return value in LoadNextMatchingObjectBlock() per rso bug 615 * * Revision 1.30 2004/06/30 20:29:04 dmorissette * Fixed refs to old address danmo@videotron.ca * * Revision 1.29 2003/08/12 23:17:21 dmorissette * Added reading of v500+ coordsys affine params (Anthony D. - Encom) * * Revision 1.28 2002/08/27 17:18:43 warmerda * improved CPL error testing * * Revision 1.27 2002/07/30 13:54:12 julien * TABMAPFile::GetFeatureId() now return -1 when there's no geometry. (bug 169) * * Revision 1.26 2002/04/25 16:05:24 julien * Disabled the overflow warning in SetCoordFilter() by adding bIgnoreOverflow * variable in Coordsys2Int of the TABMAPFile class and TABMAPHeaderBlock class * * Revision 1.25 2002/03/26 19:27:43 daniel * Got rid of tabs in source * * Revision 1.24 2002/03/26 01:48:40 daniel * Added Multipoint object type (V650) * * Revision 1.23 2002/02/20 13:53:40 daniel * Prevent an infinite loop of calls to LoadNextMatchingObjectBlock() in * GetNextFeatureId() if no objects found in spatial index. * * Revision 1.22 2001/11/19 15:04:41 daniel * Prevent writing of coordinates outside of the +/-1e9 integer bounds. * * Revision 1.21 2001/11/17 21:54:06 daniel * Made several changes in order to support writing objects in 16 bits * coordinate format. New TABMAPObjHdr-derived classes are used to hold * object info in mem until block is full. * * Revision 1.20 2001/09/18 20:33:52 warmerda * fixed case of spatial search on file with just one object block * * Revision 1.19 2001/09/14 03:23:55 warmerda * Substantial upgrade to support spatial queries using spatial indexes * * Revision 1.18 2001/03/15 03:57:51 daniel * Added implementation for new OGRLayer::GetExtent(), returning data MBR. * * Revision 1.17 2000/11/23 21:11:07 daniel * OOpps... VC++ didn't like the way TABPenDef, etc. were initialized * * Revision 1.16 2000/11/23 20:47:46 daniel * Use MI defaults for Pen, Brush, Font, Symbol instead of all zeros * * Revision 1.15 2000/11/22 04:03:10 daniel * Added warning when objects written outside of the +/-1e9 int. coord. range * * Revision 1.14 2000/11/15 04:13:49 daniel * Fixed writing of TABMAPToolBlock to allocate a new block when full * * Revision 1.13 2000/05/19 06:44:55 daniel * Modified generation of spatial index to split index nodes and produce a * more balanced tree. * * Revision 1.12 2000/03/13 05:58:01 daniel * Create 1024 bytes V500 .MAP header + limit m_nMaxCoordBufSize for V450 obj. * * Revision 1.11 2000/02/28 17:00:00 daniel * Added V450 object types * * Revision 1.10 2000/01/15 22:30:44 daniel * Switch to MIT/X-Consortium OpenSource license * * Revision 1.9 1999/12/19 17:37:52 daniel * Fixed memory leaks * * Revision 1.8 1999/11/14 04:43:31 daniel * Support dataset with no .MAP/.ID files * * Revision 1.7 1999/10/19 22:57:17 daniel * Create m_poCurObjBlock only when needed to avoid empty blocks in files * and problems with MBR in header block of files with only "NONE" geometries * * Revision 1.6 1999/10/06 13:17:46 daniel * Update m_nMaxCoordBufSize in header block * * Revision 1.5 1999/10/01 03:52:22 daniel * Avoid producing an unused block in the file when closing it. * * Revision 1.4 1999/09/26 14:59:36 daniel * Implemented write support * * Revision 1.3 1999/09/20 18:42:42 daniel * Use binary access to open file. * * Revision 1.2 1999/09/16 02:39:16 daniel * Completed read support for most feature types * * Revision 1.1 1999/07/12 04:18:24 daniel * Initial checkin * **********************************************************************/ #include "mitab.h" /*===================================================================== * class TABMAPFile *====================================================================*/ /********************************************************************** * TABMAPFile::TABMAPFile() * * Constructor. **********************************************************************/ TABMAPFile::TABMAPFile() { m_nMinTABVersion = 300; m_fp = NULL; m_pszFname = NULL; m_poHeader = NULL; m_poSpIndex = NULL; m_poSpIndexLeaf = NULL; /* See bug 1732: Optimized spatial index produces broken files because * of the way CoordBlocks are split. For now we have to force using the * Quick (old) spatial index mode by default until bug 1732 is fixed. */ m_bQuickSpatialIndexMode = TRUE; // m_bQuickSpatialIndexMode = FALSE; m_poCurObjBlock = NULL; m_nCurObjPtr = -1; m_nCurObjType = -1; m_nCurObjId = -1; m_poCurCoordBlock = NULL; m_poToolDefTable = NULL; } /********************************************************************** * TABMAPFile::~TABMAPFile() * * Destructor. **********************************************************************/ TABMAPFile::~TABMAPFile() { Close(); } /********************************************************************** * TABMAPFile::Open() * * Open a .MAP file, and initialize the structures to be ready to read * objects from it. * * Since .MAP and .ID files are optional, you can set bNoErrorMsg=TRUE to * disable the error message and receive an return value of 1 if file * cannot be opened. * In this case, only the methods MoveToObjId() and GetCurObjType() can * be used. They will behave as if the .ID file contained only null * references, so all object will look like they have NONE geometries. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::Open(const char *pszFname, const char *pszAccess, GBool bNoErrorMsg /* = FALSE */) { FILE *fp=NULL; TABRawBinBlock *poBlock=NULL; if (m_fp) { CPLError(CE_Failure, CPLE_FileIO, "Open() failed: object already contains an open file"); return -1; } m_nMinTABVersion = 300; m_fp = NULL; m_poHeader = NULL; m_poIdIndex = NULL; m_poSpIndex = NULL; m_poToolDefTable = NULL; /*----------------------------------------------------------------- * Validate access mode and make sure we use binary access. *----------------------------------------------------------------*/ if (EQUALN(pszAccess, "r", 1)) { m_eAccessMode = TABRead; pszAccess = "rb"; } else if (EQUALN(pszAccess, "w", 1)) { m_eAccessMode = TABWrite; pszAccess = "wb+"; } else { CPLError(CE_Failure, CPLE_FileIO, "Open() failed: access mode \"%s\" not supported", pszAccess); return -1; } /*----------------------------------------------------------------- * Open file *----------------------------------------------------------------*/ fp = VSIFOpen(pszFname, pszAccess); // TODO: In Read/Write mode we should also preload the chain of deleted // blocks in the blockManager. Not needed for read-only or write-only. m_oBlockManager.Reset(); if (fp != NULL && m_eAccessMode == TABRead) { /*----------------------------------------------------------------- * Read access: try to read header block * First try with a 512 bytes block to check the .map version. * If it's version 500 or more then read again a 1024 bytes block *----------------------------------------------------------------*/ poBlock = TABCreateMAPBlockFromFile(fp, 0, 512); if (poBlock && poBlock->GetBlockClass() == TABMAP_HEADER_BLOCK && ((TABMAPHeaderBlock*)poBlock)->m_nMAPVersionNumber >= 500) { // Version 500 or higher. Read 1024 bytes block instead of 512 delete poBlock; poBlock = TABCreateMAPBlockFromFile(fp, 0, 1024); } if (poBlock==NULL || poBlock->GetBlockClass() != TABMAP_HEADER_BLOCK) { if (poBlock) delete poBlock; poBlock = NULL; VSIFClose(fp); CPLError(CE_Failure, CPLE_FileIO, "Open() failed: %s does not appear to be a valid .MAP file", pszFname); return -1; } } else if (fp != NULL && m_eAccessMode == TABWrite) { /*----------------------------------------------------------------- * Write access: create a new header block * .MAP files of Version 500 and up appear to have a 1024 bytes * header. The last 512 bytes are usually all zeros. *----------------------------------------------------------------*/ poBlock = new TABMAPHeaderBlock(m_eAccessMode); poBlock->InitNewBlock(fp, 1024, m_oBlockManager.AllocNewBlock() ); // Alloc a second 512 bytes of space since oBlockManager deals // with 512 bytes blocks. m_oBlockManager.AllocNewBlock(); } else if (bNoErrorMsg) { /*----------------------------------------------------------------- * .MAP does not exist... produce no error message, but set * the class members so that MoveToObjId() and GetCurObjType() * can be used to return only NONE geometries. *----------------------------------------------------------------*/ m_fp = NULL; m_nCurObjType = TAB_GEOM_NONE; /* Create a false header block that will return default * values for projection and coordsys conversion stuff... */ m_poHeader = new TABMAPHeaderBlock(m_eAccessMode); m_poHeader->InitNewBlock(NULL, 512, 0 ); return 1; } else { CPLError(CE_Failure, CPLE_FileIO, "Open() failed for %s", pszFname); return -1; } /*----------------------------------------------------------------- * File appears to be valid... set the various class members *----------------------------------------------------------------*/ m_fp = fp; m_poHeader = (TABMAPHeaderBlock*)poBlock; m_pszFname = CPLStrdup(pszFname); /*----------------------------------------------------------------- * Create a TABMAPObjectBlock, in READ mode only. * * In WRITE mode, the object block will be created only when needed. * We do not create the object block in the open() call because * files that contained only "NONE" geometries ended up with empty * object and spatial index blocks. *----------------------------------------------------------------*/ if (m_eAccessMode == TABRead) { m_poCurObjBlock = new TABMAPObjectBlock(m_eAccessMode); m_poCurObjBlock->InitNewBlock(m_fp, 512); } else { m_poCurObjBlock = NULL; } /*----------------------------------------------------------------- * Open associated .ID (object id index) file *----------------------------------------------------------------*/ m_poIdIndex = new TABIDFile; if (m_poIdIndex->Open(pszFname, pszAccess) != 0) { // Failed... an error has already been reported Close(); return -1; } /*----------------------------------------------------------------- * Default Coord filter is the MBR of the whole file * This is currently unused but could eventually be used to handle * spatial filters more efficiently. *----------------------------------------------------------------*/ if (m_eAccessMode == TABRead) { ResetCoordFilter(); } /*----------------------------------------------------------------- * We could scan a file through its quad tree index... but we don't! * * In read mode, we just ignore the spatial index. * * In write mode the index is created and maintained as new object * blocks are added inside CommitObjBlock(). *----------------------------------------------------------------*/ m_poSpIndex = NULL; /*----------------------------------------------------------------- * Initialization of the Drawing Tools table will be done automatically * as Read/Write calls are done later. *----------------------------------------------------------------*/ m_poToolDefTable = NULL; /*----------------------------------------------------------------- * Make sure all previous calls succeded. *----------------------------------------------------------------*/ if (CPLGetLastErrorNo() != 0) { // Open Failed... an error has already been reported Close(); return -1; } return 0; } /********************************************************************** * TABMAPFile::Close() * * Close current file, and release all memory used. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::Close() { // Check if file is opened... it is possible to have a fake header // without an actual file attached to it. if (m_fp == NULL && m_poHeader == NULL) return 0; /*---------------------------------------------------------------- * Write access: commit latest changes to the file. *---------------------------------------------------------------*/ if (m_eAccessMode == TABWrite) { // Start by committing current object and coord blocks // Nothing happens if none has been created yet. CommitObjAndCoordBlocks(FALSE); // Write the drawing tools definitions now. CommitDrawingTools(); // Commit spatial index blocks CommitSpatialIndex(); // Update header fields and commit if (m_poHeader) { // OK, with V450 files, objects are not limited to 32k nodes // any more, and this means that m_nMaxCoordBufSize can become // huge, and actually more huge than can be held in memory. // MapInfo counts m_nMaxCoordBufSize=0 for V450 objects, but // until this is cleanly implented, we will just prevent // m_nMaxCoordBufSizefrom going beyond 512k in V450 files. if (m_nMinTABVersion >= 450) { m_poHeader->m_nMaxCoordBufSize = MIN(m_poHeader->m_nMaxCoordBufSize, 512*1024); } // Write Ref to beginning of the chain of garbage blocks m_poHeader->m_nFirstGarbageBlock = m_oBlockManager.GetFirstGarbageBlock(); m_poHeader->CommitToFile(); } } // Check for overflow of internal coordinates and produce a warning // if that happened... if (m_poHeader && m_poHeader->m_bIntBoundsOverflow) { double dBoundsMinX, dBoundsMinY, dBoundsMaxX, dBoundsMaxY; Int2Coordsys(-1000000000, -1000000000, dBoundsMinX, dBoundsMinY); Int2Coordsys(1000000000, 1000000000, dBoundsMaxX, dBoundsMaxY); CPLError(CE_Warning, TAB_WarningBoundsOverflow, "Some objects were written outside of the file's " "predefined bounds.\n" "These objects may have invalid coordinates when the file " "is reopened.\n" "Predefined bounds: (%.15g,%.15g)-(%.15g,%.15g)\n", dBoundsMinX, dBoundsMinY, dBoundsMaxX, dBoundsMaxY ); } // Delete all structures if (m_poHeader) delete m_poHeader; m_poHeader = NULL; if (m_poIdIndex) { m_poIdIndex->Close(); delete m_poIdIndex; m_poIdIndex = NULL; } if (m_poCurObjBlock) { delete m_poCurObjBlock; m_poCurObjBlock = NULL; m_nCurObjPtr = -1; m_nCurObjType = -1; m_nCurObjId = -1; } if (m_poCurCoordBlock) { delete m_poCurCoordBlock; m_poCurCoordBlock = NULL; } if (m_poSpIndex) { delete m_poSpIndex; m_poSpIndex = NULL; m_poSpIndexLeaf = NULL; } if (m_poToolDefTable) { delete m_poToolDefTable; m_poToolDefTable = NULL; } // Close file if (m_fp) VSIFClose(m_fp); m_fp = NULL; CPLFree(m_pszFname); m_pszFname = NULL; return 0; } /********************************************************************** * TABMAPFile::SetQuickSpatialIndexMode() * * Select "quick spatial index mode". * * The default behavior of MITAB is to generate an optimized spatial index, * but this results in slower write speed. * * Applications that want faster write speed and do not care * about the performance of spatial queries on the resulting file can * use SetQuickSpatialIndexMode() to require the creation of a non-optimal * spatial index (actually emulating the type of spatial index produced * by MITAB before version 1.6.0). In this mode writing files can be * about 5 times faster, but spatial queries can be up to 30 times slower. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::SetQuickSpatialIndexMode(GBool bQuickSpatialIndexMode/*=TRUE*/) { if (m_eAccessMode != TABWrite) { CPLError(CE_Failure, CPLE_AssertionFailed, "SetQuickSpatialIndexMode() failed: file not opened for write access."); return -1; } if (m_poCurObjBlock != NULL || m_poSpIndex != NULL) { CPLError(CE_Failure, CPLE_AssertionFailed, "SetQuickSpatialIndexMode() must be called before writing the first object."); return -1; } m_bQuickSpatialIndexMode = bQuickSpatialIndexMode; return 0; } /************************************************************************/ /* PushBlock() */ /* */ /* Install a new block (object or spatial) as being current - */ /* whatever that means. This method is only intended to ever */ /* be called from LoadNextMatchingObjectBlock(). */ /************************************************************************/ TABRawBinBlock *TABMAPFile::PushBlock( int nFileOffset ) { TABRawBinBlock *poBlock; poBlock = GetIndexObjectBlock( nFileOffset ); if( poBlock == NULL ) return NULL; if( poBlock->GetBlockType() == TABMAP_INDEX_BLOCK ) { TABMAPIndexBlock *poIndex = (TABMAPIndexBlock *) poBlock; if( m_poSpIndexLeaf == NULL ) { m_poSpIndexLeaf = m_poSpIndex = poIndex; } else { CPLAssert( m_poSpIndexLeaf->GetEntry( m_poSpIndexLeaf->GetCurChildIndex())->nBlockPtr == nFileOffset ); m_poSpIndexLeaf->SetCurChildRef( poIndex, m_poSpIndexLeaf->GetCurChildIndex() ); poIndex->SetParentRef( m_poSpIndexLeaf ); m_poSpIndexLeaf = poIndex; } } else { CPLAssert( poBlock->GetBlockType() == TABMAP_OBJECT_BLOCK ); if( m_poCurObjBlock != NULL ) delete m_poCurObjBlock; m_poCurObjBlock = (TABMAPObjectBlock *) poBlock; m_nCurObjPtr = nFileOffset; m_nCurObjType = 0; m_nCurObjId = -1; } return poBlock; } /************************************************************************/ /* LoadNextMatchingObjectBlock() */ /* */ /* Advance through the spatial indices till the next object */ /* block is loaded that matching the spatial query extents. */ /************************************************************************/ int TABMAPFile::LoadNextMatchingObjectBlock( int bFirstObject ) { // If we are just starting, verify the stack is empty. if( bFirstObject ) { CPLAssert( m_poSpIndex == NULL && m_poSpIndexLeaf == NULL ); /* m_nFirstIndexBlock set to 0 means that there is no feature */ if ( m_poHeader->m_nFirstIndexBlock == 0 ) return FALSE; if( PushBlock( m_poHeader->m_nFirstIndexBlock ) == NULL ) return FALSE; if( m_poSpIndex == NULL ) { CPLAssert( m_poCurObjBlock != NULL ); return TRUE; } } while( m_poSpIndexLeaf != NULL ) { int iEntry = m_poSpIndexLeaf->GetCurChildIndex(); if( iEntry >= m_poSpIndexLeaf->GetNumEntries()-1 ) { TABMAPIndexBlock *poParent = m_poSpIndexLeaf->GetParentRef(); delete m_poSpIndexLeaf; m_poSpIndexLeaf = poParent; if( poParent != NULL ) { poParent->SetCurChildRef( NULL, poParent->GetCurChildIndex() ); } else { m_poSpIndex = NULL; } continue; } m_poSpIndexLeaf->SetCurChildRef( NULL, ++iEntry ); TABMAPIndexEntry *psEntry = m_poSpIndexLeaf->GetEntry( iEntry ); TABRawBinBlock *poBlock; if( psEntry->XMax < m_XMinFilter || psEntry->YMax < m_YMinFilter || psEntry->XMin > m_XMaxFilter || psEntry->YMin > m_YMaxFilter ) continue; poBlock = PushBlock( psEntry->nBlockPtr ); if( poBlock == NULL ) return FALSE; else if( poBlock->GetBlockType() == TABMAP_OBJECT_BLOCK ) return TRUE; else { /* continue processing new index block */ } } return m_poSpIndexLeaf != NULL; } /************************************************************************/ /* ResetReading() */ /* */ /* Ensure that any resources related to a spatial traversal of */ /* the file are recovered, and the state reinitialized to the */ /* initial conditions. */ /************************************************************************/ void TABMAPFile::ResetReading() { if (m_poSpIndex && m_eAccessMode == TABRead ) { delete m_poSpIndex; m_poSpIndex = NULL; m_poSpIndexLeaf = NULL; } } /************************************************************************/ /* GetNextFeatureId() */ /* */ /* Fetch the next feature id based on a traversal of the */ /* spatial index. */ /************************************************************************/ int TABMAPFile::GetNextFeatureId( int nPrevId ) { /* -------------------------------------------------------------------- */ /* m_fp is NULL when all geometry are NONE and/or there's */ /* no .map file and/or there's no spatial indexes */ /* -------------------------------------------------------------------- */ if( m_fp == NULL ) return -1; if( nPrevId == 0 ) nPrevId = -1; /* -------------------------------------------------------------------- */ /* This should always be true if we are being called properly. */ /* -------------------------------------------------------------------- */ if( nPrevId != -1 && m_nCurObjId != nPrevId ) { CPLError( CE_Failure, CPLE_AppDefined, "TABMAPFile::GetNextFeatureId(%d) called out of sequence.", nPrevId ); return -1; } CPLAssert( nPrevId == -1 || m_poCurObjBlock != NULL ); /* -------------------------------------------------------------------- */ /* Ensure things are initialized properly if this is a request */ /* for the first feature. */ /* -------------------------------------------------------------------- */ if( nPrevId == -1 ) { m_nCurObjId = -1; } /* -------------------------------------------------------------------- */ /* Try to advance to the next object in the current object */ /* block. */ /* -------------------------------------------------------------------- */ if( nPrevId == -1 || m_poCurObjBlock->AdvanceToNextObject(m_poHeader) == -1 ) { // If not, try to advance to the next object block, and get // first object from it. Note that some object blocks actually // have no objects, so we may have to advance to additional // object blocks till we find a non-empty one. GBool bFirstCall = (nPrevId == -1); do { if( !LoadNextMatchingObjectBlock( bFirstCall ) ) return -1; bFirstCall = FALSE; } while( m_poCurObjBlock->AdvanceToNextObject(m_poHeader) == -1 ); } m_nCurObjType = m_poCurObjBlock->GetCurObjectType(); m_nCurObjId = m_poCurObjBlock->GetCurObjectId(); m_nCurObjPtr = m_poCurObjBlock->GetStartAddress() + m_poCurObjBlock->GetCurObjectOffset(); CPLAssert( m_nCurObjId != -1 ); return m_nCurObjId; } /********************************************************************** * TABMAPFile::Int2Coordsys() * * Convert from long integer (internal) to coordinates system units * as defined in the file's coordsys clause. * * Note that the false easting/northing and the conversion factor from * datum to coordsys units are not included in the calculation. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::Int2Coordsys(GInt32 nX, GInt32 nY, double &dX, double &dY) { if (m_poHeader == NULL) return -1; return m_poHeader->Int2Coordsys(nX, nY, dX, dY); } /********************************************************************** * TABMAPFile::Coordsys2Int() * * Convert from coordinates system units as defined in the file's * coordsys clause to long integer (internal) coordinates. * * Note that the false easting/northing and the conversion factor from * datum to coordsys units are not included in the calculation. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::Coordsys2Int(double dX, double dY, GInt32 &nX, GInt32 &nY, GBool bIgnoreOverflow/*=FALSE*/) { if (m_poHeader == NULL) return -1; return m_poHeader->Coordsys2Int(dX, dY, nX, nY, bIgnoreOverflow); } /********************************************************************** * TABMAPFile::Int2CoordsysDist() * * Convert a pair of X,Y size (or distance) values from long integer * (internal) to coordinates system units as defined in the file's coordsys * clause. * * The difference with Int2Coordsys() is that this function only applies * the scaling factor: it does not apply the displacement. * * Since the calculations on the X and Y values are independent, either * one can be omitted (i.e. passed as 0) * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::Int2CoordsysDist(GInt32 nX, GInt32 nY, double &dX, double &dY) { if (m_poHeader == NULL) return -1; return m_poHeader->Int2CoordsysDist(nX, nY, dX, dY); } /********************************************************************** * TABMAPFile::Coordsys2IntDist() * * Convert a pair of X,Y size (or distance) values from coordinates * system units as defined in the file's coordsys clause to long * integer (internal) coordinate units. * * The difference with Int2Coordsys() is that this function only applies * the scaling factor: it does not apply the displacement. * * Since the calculations on the X and Y values are independent, either * one can be omitted (i.e. passed as 0) * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::Coordsys2IntDist(double dX, double dY, GInt32 &nX, GInt32 &nY) { if (m_poHeader == NULL) return -1; return m_poHeader->Coordsys2IntDist(dX, dY, nX, nY); } /********************************************************************** * TABMAPFile::SetCoordsysBounds() * * Set projection coordinates bounds of the newly created dataset. * * This function must be called after creating a new dataset and before any * feature can be written to it. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::SetCoordsysBounds(double dXMin, double dYMin, double dXMax, double dYMax) { int nStatus = 0; if (m_poHeader == NULL) return -1; nStatus = m_poHeader->SetCoordsysBounds(dXMin, dYMin, dXMax, dYMax); if (nStatus == 0) ResetCoordFilter(); return nStatus; } /********************************************************************** * TABMAPFile::GetMaxObjId() * * Return the value of the biggest valid object id. * * Note that object ids are positive and start at 1. * * Returns a value >= 0 on success, -1 on error. **********************************************************************/ GInt32 TABMAPFile::GetMaxObjId() { if (m_poIdIndex) return m_poIdIndex->GetMaxObjId(); return -1; } /********************************************************************** * TABMAPFile::MoveToObjId() * * Get ready to work with the object with the specified id. The object * data pointer (inside m_poCurObjBlock) will be moved to the first byte * of data for this map object. * * The object type and id (i.e. table row number) will be accessible * using GetCurObjType() and GetCurObjId(). * * Note that object ids are positive and start at 1. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::MoveToObjId(int nObjId) { int nFileOffset; /*----------------------------------------------------------------- * In read access mode, since the .MAP/.ID are optional, if the * file is not opened then we can still act as if one existed and * make any object id look like a TAB_GEOM_NONE *----------------------------------------------------------------*/ if (m_fp == NULL && m_eAccessMode == TABRead) { CPLAssert(m_poIdIndex == NULL && m_poCurObjBlock == NULL); m_nCurObjPtr = 0; m_nCurObjId = nObjId; m_nCurObjType = TAB_GEOM_NONE; return 0; } if (m_poIdIndex == NULL || m_poCurObjBlock == NULL) { CPLError(CE_Failure, CPLE_AssertionFailed, "MoveToObjId(): file not opened!"); m_nCurObjPtr = m_nCurObjId = m_nCurObjType = -1; return -1; } /*----------------------------------------------------------------- * Move map object pointer to the right location. Fetch location * from the index file, unless we are already pointing at it. *----------------------------------------------------------------*/ if( m_nCurObjId == nObjId ) nFileOffset = m_nCurObjPtr; else nFileOffset = m_poIdIndex->GetObjPtr(nObjId); if (nFileOffset == 0) { /*--------------------------------------------------------- * Object with no geometry... this is a valid case. *--------------------------------------------------------*/ m_nCurObjPtr = 0; m_nCurObjId = nObjId; m_nCurObjType = TAB_GEOM_NONE; } else if ( m_poCurObjBlock->GotoByteInFile(nFileOffset, TRUE) == 0) { /*------------------------------------------------------------- * OK, it worked, read the object type and row id. *------------------------------------------------------------*/ m_nCurObjPtr = nFileOffset; m_nCurObjType = m_poCurObjBlock->ReadByte(); m_nCurObjId = m_poCurObjBlock->ReadInt32(); // Do a consistency check... if (m_nCurObjId != nObjId) { CPLError(CE_Failure, CPLE_FileIO, "Object ID from the .ID file (%d) differs from the value " "in the .MAP file (%d). File may be corrupt.", nObjId, m_nCurObjId); m_nCurObjPtr = m_nCurObjId = m_nCurObjType = -1; return -1; } } else { /*--------------------------------------------------------- * Failed positioning input file... CPLError has been called. *--------------------------------------------------------*/ m_nCurObjPtr = m_nCurObjId = m_nCurObjType = -1; return -1; } return 0; } /********************************************************************** * TABMAPFile::UpdateMapHeaderInfo() * * Update .map header information (counter of objects by type and minimum * required version) in light of a new object to be written to the file. * * Called only by PrepareNewObj() and by the TABCollection class. **********************************************************************/ void TABMAPFile::UpdateMapHeaderInfo(GByte nObjType) { /*----------------------------------------------------------------- * Update count of objects by type in the header block *----------------------------------------------------------------*/ if (nObjType == TAB_GEOM_SYMBOL || nObjType == TAB_GEOM_FONTSYMBOL || nObjType == TAB_GEOM_CUSTOMSYMBOL || nObjType == TAB_GEOM_MULTIPOINT || nObjType == TAB_GEOM_V800_MULTIPOINT || nObjType == TAB_GEOM_SYMBOL_C || nObjType == TAB_GEOM_FONTSYMBOL_C || nObjType == TAB_GEOM_CUSTOMSYMBOL_C || nObjType == TAB_GEOM_MULTIPOINT_C || nObjType == TAB_GEOM_V800_MULTIPOINT_C ) { m_poHeader->m_numPointObjects++; } else if (nObjType == TAB_GEOM_LINE || nObjType == TAB_GEOM_PLINE || nObjType == TAB_GEOM_MULTIPLINE || nObjType == TAB_GEOM_V450_MULTIPLINE || nObjType == TAB_GEOM_V800_MULTIPLINE || nObjType == TAB_GEOM_ARC || nObjType == TAB_GEOM_LINE_C || nObjType == TAB_GEOM_PLINE_C || nObjType == TAB_GEOM_MULTIPLINE_C || nObjType == TAB_GEOM_V450_MULTIPLINE_C || nObjType == TAB_GEOM_V800_MULTIPLINE_C || nObjType == TAB_GEOM_ARC_C) { m_poHeader->m_numLineObjects++; } else if (nObjType == TAB_GEOM_REGION || nObjType == TAB_GEOM_V450_REGION || nObjType == TAB_GEOM_V800_REGION || nObjType == TAB_GEOM_RECT || nObjType == TAB_GEOM_ROUNDRECT || nObjType == TAB_GEOM_ELLIPSE || nObjType == TAB_GEOM_REGION_C || nObjType == TAB_GEOM_V450_REGION_C || nObjType == TAB_GEOM_V800_REGION_C || nObjType == TAB_GEOM_RECT_C || nObjType == TAB_GEOM_ROUNDRECT_C || nObjType == TAB_GEOM_ELLIPSE_C) { m_poHeader->m_numRegionObjects++; } else if (nObjType == TAB_GEOM_TEXT || nObjType == TAB_GEOM_TEXT_C) { m_poHeader->m_numTextObjects++; } /*----------------------------------------------------------------- * Check forminimum TAB file version number *----------------------------------------------------------------*/ int nVersion = TAB_GEOM_GET_VERSION(nObjType); if (nVersion > m_nMinTABVersion ) { m_nMinTABVersion = nVersion; } } /********************************************************************** * TABMAPFile::PrepareNewObj() * * Get ready to write a new object described by poObjHdr (using the * poObjHdr's m_nId (featureId), m_nType and IntMBR members which must * have been set by the caller). * * Depending on whether "quick spatial index mode" is selected, we either: * * 1- Walk through the spatial index to find the best place to insert the * new object, update the spatial index references, and prepare the object * data block to be ready to write the object to it. * ... or ... * 2- prepare the current object data block to be ready to write the * object to it. If the object block is full then it is inserted in the * spatial index and committed to disk, and a new obj block is created. * * m_poCurObjBlock will be set to be ready to receive the new object, and * a new block will be created if necessary (in which case the current * block contents will be committed to disk, etc.) The actual ObjHdr * data won't be written to m_poCurObjBlock until CommitNewObj() is called. * * If this object type uses coordinate blocks, then the coordinate block * will be prepared to receive coordinates. * * This function will also take care of updating the .ID index entry for * the new object. * * Note that object ids are positive and start at 1. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::PrepareNewObj(TABMAPObjHdr *poObjHdr) { m_nCurObjPtr = m_nCurObjId = m_nCurObjType = -1; if (m_eAccessMode != TABWrite || m_poIdIndex == NULL || m_poHeader == NULL) { CPLError(CE_Failure, CPLE_AssertionFailed, "PrepareNewObj() failed: file not opened for write access."); return -1; } /*----------------------------------------------------------------- * For objects with no geometry, we just update the .ID file and return *----------------------------------------------------------------*/ if (poObjHdr->m_nType == TAB_GEOM_NONE) { m_nCurObjType = poObjHdr->m_nType; m_nCurObjId = poObjHdr->m_nId; m_nCurObjPtr = 0; m_poIdIndex->SetObjPtr(m_nCurObjId, 0); return 0; } /*----------------------------------------------------------------- * Update count of objects by type in the header block and minimum * required version. *----------------------------------------------------------------*/ UpdateMapHeaderInfo(poObjHdr->m_nType); /*----------------------------------------------------------------- * Depending on the selected spatial index mode, we will either insert * new objects via the spatial index (slower write but results in optimal * spatial index) or directly in the current ObjBlock (faster write * but non-optimal spatial index) *----------------------------------------------------------------*/ if ( !m_bQuickSpatialIndexMode ) { if (PrepareNewObjViaSpatialIndex(poObjHdr) != 0) return -1; /* Error already reported */ } else { if (PrepareNewObjViaObjBlock(poObjHdr) != 0) return -1; /* Error already reported */ } /*----------------------------------------------------------------- * Prepare ObjBlock for this new object. * Real data won't be written to the object block until CommitNewObj() * is called. *----------------------------------------------------------------*/ m_nCurObjPtr = m_poCurObjBlock->PrepareNewObject(poObjHdr); if (m_nCurObjPtr < 0 ) { CPLError(CE_Failure, CPLE_FileIO, "Failed writing object header for feature id %d", poObjHdr->m_nId); return -1; } m_nCurObjType = poObjHdr->m_nType; m_nCurObjId = poObjHdr->m_nId; /*----------------------------------------------------------------- * Update .ID Index *----------------------------------------------------------------*/ m_poIdIndex->SetObjPtr(m_nCurObjId, m_nCurObjPtr); /*----------------------------------------------------------------- * Prepare Coords block... * create a new TABMAPCoordBlock if it was not done yet. *----------------------------------------------------------------*/ PrepareCoordBlock(m_nCurObjType, m_poCurObjBlock, &m_poCurCoordBlock); if (CPLGetLastErrorNo() != 0 && CPLGetLastErrorType() == CE_Failure) return -1; return 0; } /********************************************************************** * TABMAPFile::PrepareNewObjViaSpatialIndex() * * Used by TABMAPFile::PrepareNewObj() to walk through the spatial index * to find the best place to insert the new object, update the spatial * index references, and prepare the object data block to be ready to * write the object to it. * * This method is used when "quick spatial index mode" is NOT selected, * i.e. when we want to produce a file with an optimal spatial index * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::PrepareNewObjViaSpatialIndex(TABMAPObjHdr *poObjHdr) { int nObjSize; GInt32 nObjBlockForInsert = -1; /*----------------------------------------------------------------- * Create spatial index if we don't have one yet. * We do not create the index and object data blocks in the open() * call because files that contained only "NONE" geometries ended up * with empty object and spatial index blocks. *----------------------------------------------------------------*/ if (m_poSpIndex == NULL) { // Spatial Index not created yet... m_poSpIndex = new TABMAPIndexBlock(m_eAccessMode); m_poSpIndex->InitNewBlock(m_fp, 512, m_oBlockManager.AllocNewBlock()); m_poSpIndex->SetMAPBlockManagerRef(&m_oBlockManager); m_poHeader->m_nFirstIndexBlock = m_poSpIndex->GetNodeBlockPtr(); /* We'll also need to create an object data block (later) */ nObjBlockForInsert = -1; CPLAssert(m_poCurObjBlock == NULL); } else /*----------------------------------------------------------------- * Search the spatial index to find the best place to insert this * new object. *----------------------------------------------------------------*/ { nObjBlockForInsert=m_poSpIndex->ChooseLeafForInsert(poObjHdr->m_nMinX, poObjHdr->m_nMinY, poObjHdr->m_nMaxX, poObjHdr->m_nMaxY); if (nObjBlockForInsert == -1) { /* ChooseLeafForInsert() should not fail unless file is corrupt*/ CPLError(CE_Failure, CPLE_AssertionFailed, "ChooseLeafForInsert() Failed?!?!"); return -1; } } if (nObjBlockForInsert == -1) { /*------------------------------------------------------------- * Create a new object data block from scratch *------------------------------------------------------------*/ m_poCurObjBlock = new TABMAPObjectBlock(TABReadWrite); int nBlockOffset = m_oBlockManager.AllocNewBlock(); m_poCurObjBlock->InitNewBlock(m_fp, 512, nBlockOffset); /*------------------------------------------------------------- * Insert new object block in index, based on MBR of poObjHdr *------------------------------------------------------------*/ if (m_poSpIndex->AddEntry(poObjHdr->m_nMinX, poObjHdr->m_nMinY, poObjHdr->m_nMaxX, poObjHdr->m_nMaxY, m_poCurObjBlock->GetStartAddress()) != 0) return -1; m_poHeader->m_nMaxSpIndexDepth = MAX(m_poHeader->m_nMaxSpIndexDepth, (GByte)m_poSpIndex->GetCurMaxDepth()+1); } else { /*------------------------------------------------------------- * Load existing object and Coord blocks, unless we've already * got the right object block in memory *------------------------------------------------------------*/ if (m_poCurObjBlock && m_poCurObjBlock->GetStartAddress() != nObjBlockForInsert) { /* Got a block in memory but it's not the right one, flush it */ if (CommitObjAndCoordBlocks(TRUE) != 0 ) return -1; } if (m_poCurObjBlock == NULL) { if (LoadObjAndCoordBlocks(nObjBlockForInsert) != 0) return -1; // The ObjBlock doesn't know its MBR. Get the value from the // index and set it GInt32 nMinX, nMinY, nMaxX, nMaxY; m_poSpIndex->GetCurLeafEntryMBR(m_poCurObjBlock->GetStartAddress(), nMinX, nMinY, nMaxX, nMaxY); m_poCurObjBlock->SetMBR(nMinX, nMinY, nMaxX, nMaxY); } } /*----------------------------------------------------------------- * Fetch new object size, make sure there is enough room in obj. * block for new object, update spatial index and split if necessary. *----------------------------------------------------------------*/ nObjSize = m_poHeader->GetMapObjectSize(poObjHdr->m_nType); if (m_poCurObjBlock->GetNumUnusedBytes() >= nObjSize ) { /*------------------------------------------------------------- * New object fits in current block, just update the spatial index *------------------------------------------------------------*/ GInt32 nMinX, nMinY, nMaxX, nMaxY; m_poCurObjBlock->GetMBR(nMinX, nMinY, nMaxX, nMaxY); /* Need to calculate the enlarged MBR that includes new object */ nMinX = MIN(nMinX, poObjHdr->m_nMinX); nMinY = MIN(nMinY, poObjHdr->m_nMinY); nMaxX = MAX(nMaxX, poObjHdr->m_nMaxX); nMaxY = MAX(nMaxY, poObjHdr->m_nMaxY); if (m_poSpIndex->UpdateLeafEntry(m_poCurObjBlock->GetStartAddress(), nMinX, nMinY, nMaxX, nMaxY) != 0) return -1; } else { /*------------------------------------------------------------- * OK, the new object won't fit in the current block, need to split * and update index. * Split() does its job so that the current obj block will remain * the best candidate to receive the new object. It also flushes * everything to disk and will update m_poCurCoordBlock to point to * the last coord block in the chain, ready to accept new data *------------------------------------------------------------*/ TABMAPObjectBlock *poNewObjBlock; poNewObjBlock= SplitObjBlock(poObjHdr, nObjSize); if (poNewObjBlock == NULL) return -1; /* Split failed, error already reported. */ /*------------------------------------------------------------- * Update index with info about m_poCurObjectBlock *first* * This is important since UpdateLeafEntry() needs the chain of * index nodes preloaded by ChooseLeafEntry() in order to do its job *------------------------------------------------------------*/ GInt32 nMinX, nMinY, nMaxX, nMaxY; m_poCurObjBlock->GetMBR(nMinX, nMinY, nMaxX, nMaxY); /* Need to calculate the enlarged MBR that includes new object */ nMinX = MIN(nMinX, poObjHdr->m_nMinX); nMinY = MIN(nMinY, poObjHdr->m_nMinY); nMaxX = MAX(nMaxX, poObjHdr->m_nMaxX); nMaxY = MAX(nMaxY, poObjHdr->m_nMaxY); if (m_poSpIndex->UpdateLeafEntry(m_poCurObjBlock->GetStartAddress(), nMinX, nMinY, nMaxX, nMaxY) != 0) return -1; /*------------------------------------------------------------- * Add new obj block to index *------------------------------------------------------------*/ poNewObjBlock->GetMBR(nMinX, nMinY, nMaxX, nMaxY); if (m_poSpIndex->AddEntry(nMinX, nMinY, nMaxX, nMaxY, poNewObjBlock->GetStartAddress()) != 0) return -1; m_poHeader->m_nMaxSpIndexDepth = MAX(m_poHeader->m_nMaxSpIndexDepth, (GByte)m_poSpIndex->GetCurMaxDepth()+1); /*------------------------------------------------------------- * Delete second object block, no need to commit to file first since * it's already been committed to disk by Split() *------------------------------------------------------------*/ delete poNewObjBlock; } return 0; } /********************************************************************** * TABMAPFile::PrepareNewObjViaObjBlock() * * Used by TABMAPFile::PrepareNewObj() to prepare the current object * data block to be ready to write the object to it. If the object block * is full then it is inserted in the spatial index and committed to disk, * and a new obj block is created. * * This method is used when "quick spatial index mode" is selected, * i.e. faster write, but non-optimal spatial index. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::PrepareNewObjViaObjBlock(TABMAPObjHdr *poObjHdr) { int nObjSize; /*------------------------------------------------------------- * We will need an object block... check if it exists and * create it if it has not been created yet (first time for this file). * We do not create the object block in the open() call because * files that contained only "NONE" geometries ended up with empty * object and spatial index blocks. * Note: A coord block will be created only if needed later. *------------------------------------------------------------*/ if (m_poCurObjBlock == NULL) { m_poCurObjBlock = new TABMAPObjectBlock(m_eAccessMode); int nBlockOffset = m_oBlockManager.AllocNewBlock(); m_poCurObjBlock->InitNewBlock(m_fp, 512, nBlockOffset); // The reference to the first object block should // actually go through the index blocks... this will be // updated when file is closed. m_poHeader->m_nFirstIndexBlock = nBlockOffset; } /*----------------------------------------------------------------- * Fetch new object size, make sure there is enough room in obj. * block for new object, and save/create a new one if necessary. *----------------------------------------------------------------*/ nObjSize = m_poHeader->GetMapObjectSize(poObjHdr->m_nType); if (m_poCurObjBlock->GetNumUnusedBytes() < nObjSize ) { /*------------------------------------------------------------- * OK, the new object won't fit in the current block. Add the * current block to the spatial index, commit it to disk and init * a new block *------------------------------------------------------------*/ CommitObjAndCoordBlocks(FALSE); if (m_poCurObjBlock->InitNewBlock(m_fp,512, m_oBlockManager.AllocNewBlock())!=0) return -1; /* Error already reported */ /*------------------------------------------------------------- * Coord block has been committed to disk but not deleted. * Delete it to require the creation of a new coord block chain * as needed. *-------------------------------------------------------------*/ if (m_poCurCoordBlock) { delete m_poCurCoordBlock; m_poCurCoordBlock = NULL; } } return 0; } /********************************************************************** * TABMAPFile::CommitNewObj() * * Commit object header data to the ObjBlock. Should be called after * PrepareNewObj, once all members of the ObjHdr have been set. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::CommitNewObj(TABMAPObjHdr *poObjHdr) { return m_poCurObjBlock->CommitNewObject(poObjHdr); } /********************************************************************** * TABMAPFile::CommitObjAndCoordBlocks() * * Commit the TABMAPObjBlock and TABMAPCoordBlock to disk. * * The objects are deleted from memory if bDeleteObjects==TRUE. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::CommitObjAndCoordBlocks(GBool bDeleteObjects /*=FALSE*/) { int nStatus = 0; /*----------------------------------------------------------------- * First check that a objBlock has been created. It is possible to have * no object block in files that contain only "NONE" geometries. *----------------------------------------------------------------*/ if (m_poCurObjBlock == NULL) return 0; if (m_eAccessMode != TABWrite) { CPLError(CE_Failure, CPLE_AssertionFailed, "CommitObjAndCoordBlocks() failed: file not opened for write access."); return -1; } /*----------------------------------------------------------------- * We need to flush the coord block if there was one * since a list of coord blocks can belong to only one obj. block *----------------------------------------------------------------*/ if (m_poCurCoordBlock) { // Update the m_nMaxCoordBufSize member in the header block // int nTotalCoordSize = m_poCurCoordBlock->GetNumBlocksInChain()*512; if (nTotalCoordSize > m_poHeader->m_nMaxCoordBufSize) m_poHeader->m_nMaxCoordBufSize = nTotalCoordSize; // Update the references to this coord block in the MAPObjBlock // m_poCurObjBlock->AddCoordBlockRef(m_poCurCoordBlock-> GetStartAddress()); nStatus = m_poCurCoordBlock->CommitToFile(); if (bDeleteObjects) { delete m_poCurCoordBlock; m_poCurCoordBlock = NULL; } } /*----------------------------------------------------------------- * Commit the obj block *----------------------------------------------------------------*/ if (nStatus == 0) { nStatus = m_poCurObjBlock->CommitToFile(); } /*----------------------------------------------------------------- * Update the spatial index ** only in "quick spatial index" mode ** * In the (default) optimized spatial index mode, the spatial index * is already maintained up to date as part of inserting the objects in * PrepareNewObj(). * * Spatial index will be created here if it was not done yet. *----------------------------------------------------------------*/ if (nStatus == 0 && m_bQuickSpatialIndexMode) { GInt32 nXMin, nYMin, nXMax, nYMax; if (m_poSpIndex == NULL) { // Spatial Index not created yet... m_poSpIndex = new TABMAPIndexBlock(m_eAccessMode); m_poSpIndex->InitNewBlock(m_fp, 512, m_oBlockManager.AllocNewBlock()); m_poSpIndex->SetMAPBlockManagerRef(&m_oBlockManager); m_poHeader->m_nFirstIndexBlock = m_poSpIndex->GetNodeBlockPtr(); } m_poCurObjBlock->GetMBR(nXMin, nYMin, nXMax, nYMax); nStatus = m_poSpIndex->AddEntry(nXMin, nYMin, nXMax, nYMax, m_poCurObjBlock->GetStartAddress()); m_poHeader->m_nMaxSpIndexDepth = MAX(m_poHeader->m_nMaxSpIndexDepth, (GByte)m_poSpIndex->GetCurMaxDepth()+1); } /*----------------------------------------------------------------- * Delete obj block only if requested *----------------------------------------------------------------*/ if (bDeleteObjects) { delete m_poCurObjBlock; m_poCurObjBlock = NULL; } return nStatus; } /********************************************************************** * TABMAPFile::LoadObjAndCoordBlocks() * * Load the TABMAPObjBlock at specified address and corresponding * TABMAPCoordBlock, ready to write new objects to them. * * It is assumed that pre-existing m_poCurObjBlock and m_poCurCoordBlock * have been flushed to disk already using CommitObjAndCoordBlocks() * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::LoadObjAndCoordBlocks(GInt32 nBlockPtr) { TABRawBinBlock *poBlock = NULL; /*----------------------------------------------------------------- * In Write mode, if an object block is already in memory then flush it *----------------------------------------------------------------*/ if (m_eAccessMode == TABWrite && m_poCurObjBlock != NULL) { int nStatus = CommitObjAndCoordBlocks(TRUE); if (nStatus != 0) return nStatus; } /*----------------------------------------------------------------- * Load Obj Block *----------------------------------------------------------------*/ if ((poBlock = TABCreateMAPBlockFromFile(m_fp, nBlockPtr, 512, TRUE, TABReadWrite)) && poBlock->GetBlockClass() == TABMAP_OBJECT_BLOCK) { m_poCurObjBlock = (TABMAPObjectBlock*)poBlock; poBlock = NULL; } else { CPLError(CE_Failure, CPLE_FileIO, "LoadObjAndCoordBlocks() failed for object block at %d.", nBlockPtr); return -1; } /*----------------------------------------------------------------- * Load the last coord block in the chain *----------------------------------------------------------------*/ if (m_poCurObjBlock->GetLastCoordBlockAddress() == 0) { m_poCurCoordBlock = NULL; } else if ((poBlock = TABCreateMAPBlockFromFile(m_fp, m_poCurObjBlock->GetLastCoordBlockAddress(), 512, TRUE, TABReadWrite)) && poBlock->GetBlockClass() == TABMAP_COORD_BLOCK) { m_poCurCoordBlock = (TABMAPCoordBlock*)poBlock; m_poCurCoordBlock->SetMAPBlockManagerRef(&m_oBlockManager); poBlock = NULL; } else { CPLError(CE_Failure, CPLE_FileIO, "LoadObjAndCoordBlocks() failed for coord block at %d.", m_poCurObjBlock->GetLastCoordBlockAddress()); return -1; } return 0; } /********************************************************************** * TABMAPFile::SplitObjBlock() * * Split m_poCurObjBlock using Guttman algorithm. * * SplitObjBlock() doe its job so that the current obj block will remain * the best candidate to receive the new object to add. It also flushes * everything to disk and will update m_poCurCoordBlock to point to the * last coord block in the chain, ready to accept new data * * Updates to the spatial index are left to the caller. * * Returns the TABMAPObjBlock of the second block for use by the caller * in updating the spatial index, or NULL in case of error. **********************************************************************/ TABMAPObjectBlock *TABMAPFile::SplitObjBlock(TABMAPObjHdr *poObjHdrToAdd, int nSizeOfObjToAdd) { TABMAPObjHdr **papoSrcObjHdrs = NULL, *poObjHdr=NULL; int i, numSrcObj = 0; /*----------------------------------------------------------------- * Read all object headers *----------------------------------------------------------------*/ m_poCurObjBlock->Rewind(); while ((poObjHdr = TABMAPObjHdr::ReadNextObj(m_poCurObjBlock, m_poHeader)) != NULL) { if (papoSrcObjHdrs == NULL || numSrcObj%10 == 0) { // Realloc the array... by steps of 10 papoSrcObjHdrs = (TABMAPObjHdr**)CPLRealloc(papoSrcObjHdrs, (numSrcObj+10)* sizeof(TABMAPObjHdr*)); } papoSrcObjHdrs[numSrcObj++] = poObjHdr; } CPLAssert(numSrcObj > 0); /*----------------------------------------------------------------- * Reset current obj and coord block *----------------------------------------------------------------*/ GInt32 nFirstSrcCoordBlock = m_poCurObjBlock->GetFirstCoordBlockAddress(); m_poCurObjBlock->InitNewBlock(m_fp, 512, m_poCurObjBlock->GetStartAddress()); TABMAPCoordBlock *poSrcCoordBlock = m_poCurCoordBlock; m_poCurCoordBlock = NULL; /*----------------------------------------------------------------- * Create new obj and coord block *----------------------------------------------------------------*/ TABMAPObjectBlock *poNewObjBlock = new TABMAPObjectBlock(m_eAccessMode); poNewObjBlock->InitNewBlock(m_fp, 512, m_oBlockManager.AllocNewBlock()); /* Coord block will be alloc'd automatically*/ TABMAPCoordBlock *poNewCoordBlock = NULL; /*----------------------------------------------------------------- * Pick Seeds for each block *----------------------------------------------------------------*/ TABMAPIndexEntry *pasSrcEntries = (TABMAPIndexEntry*)CPLMalloc(numSrcObj*sizeof(TABMAPIndexEntry)); for (i=0; i<numSrcObj; i++) { pasSrcEntries[i].XMin = papoSrcObjHdrs[i]->m_nMinX; pasSrcEntries[i].YMin = papoSrcObjHdrs[i]->m_nMinY; pasSrcEntries[i].XMax = papoSrcObjHdrs[i]->m_nMaxX; pasSrcEntries[i].YMax = papoSrcObjHdrs[i]->m_nMaxY; } int nSeed1, nSeed2; TABMAPIndexBlock::PickSeedsForSplit(pasSrcEntries, numSrcObj, -1, poObjHdrToAdd->m_nMinX, poObjHdrToAdd->m_nMinY, poObjHdrToAdd->m_nMaxX, poObjHdrToAdd->m_nMaxY, nSeed1, nSeed2); CPLFree(pasSrcEntries); pasSrcEntries = NULL; /*----------------------------------------------------------------- * Assign the seeds to their respective block *----------------------------------------------------------------*/ // Insert nSeed1 in this block poObjHdr = papoSrcObjHdrs[nSeed1]; if (MoveObjToBlock(poObjHdr, poSrcCoordBlock, m_poCurObjBlock, &m_poCurCoordBlock) <= 0) return NULL; // Move nSeed2 to 2nd block poObjHdr = papoSrcObjHdrs[nSeed2]; if (MoveObjToBlock(poObjHdr, poSrcCoordBlock, poNewObjBlock, &poNewCoordBlock) <= 0) return NULL; /*----------------------------------------------------------------- * Go through the rest of the entries and assign them to one * of the 2 blocks * * Criteria is minimal area difference. * Resolve ties by adding the entry to the block with smaller total * area, then to the one with fewer entries, then to either. *----------------------------------------------------------------*/ for(int iEntry=0; iEntry<numSrcObj; iEntry++) { if (iEntry == nSeed1 || iEntry == nSeed2) continue; poObjHdr = papoSrcObjHdrs[iEntry]; int nObjSize = m_poHeader->GetMapObjectSize(poObjHdr->m_nType); // If one of the two blocks is almost full then all remaining // entries should go to the other block if (m_poCurObjBlock->GetNumUnusedBytes() < nObjSize+nSizeOfObjToAdd ) { if (MoveObjToBlock(poObjHdr, poSrcCoordBlock, poNewObjBlock, &poNewCoordBlock) <= 0) return NULL; continue; } else if (poNewObjBlock->GetNumUnusedBytes() < nObjSize+nSizeOfObjToAdd) { if (MoveObjToBlock(poObjHdr, poSrcCoordBlock, m_poCurObjBlock, &m_poCurCoordBlock) <= 0) return NULL; continue; } // Decide which of the two blocks to put this entry in GInt32 nXMin, nYMin, nXMax, nYMax; m_poCurObjBlock->GetMBR(nXMin, nYMin, nXMax, nYMax); double dAreaDiff1 = TABMAPIndexBlock::ComputeAreaDiff(nXMin, nYMin, nXMax, nYMax, poObjHdr->m_nMinX, poObjHdr->m_nMinY, poObjHdr->m_nMaxX, poObjHdr->m_nMaxY); poNewObjBlock->GetMBR(nXMin, nYMin, nXMax, nYMax); double dAreaDiff2 = TABMAPIndexBlock::ComputeAreaDiff(nXMin, nYMin, nXMax, nYMax, poObjHdr->m_nMinX, poObjHdr->m_nMinY, poObjHdr->m_nMaxX, poObjHdr->m_nMaxY); if (dAreaDiff1 < dAreaDiff2) { // This entry stays in this block if (MoveObjToBlock(poObjHdr, poSrcCoordBlock, m_poCurObjBlock, &m_poCurCoordBlock) <= 0) return NULL; } else { // This entry goes to new block if (MoveObjToBlock(poObjHdr, poSrcCoordBlock, poNewObjBlock, &poNewCoordBlock) <= 0) return NULL; } } /* Cleanup papoSrcObjHdrs[] */ for(i=0; i<numSrcObj; i++) { delete papoSrcObjHdrs[i]; } CPLFree(papoSrcObjHdrs); papoSrcObjHdrs = NULL; /*----------------------------------------------------------------- * Delete second coord block if one was created * Refs to coord block were kept up to date by MoveObjToBlock() * We just need to commit to file and delete the object now. *----------------------------------------------------------------*/ if (poNewCoordBlock) { if (poNewCoordBlock->CommitToFile() != 0) return NULL; delete poNewCoordBlock; } /*----------------------------------------------------------------- * Release unused coord. data blocks *----------------------------------------------------------------*/ if (poSrcCoordBlock) { if (poSrcCoordBlock->GetStartAddress() != nFirstSrcCoordBlock) { if (poSrcCoordBlock->GotoByteInFile(nFirstSrcCoordBlock, TRUE) != 0) return NULL; } int nNextCoordBlock = poSrcCoordBlock->GetNextCoordBlock(); while(poSrcCoordBlock != NULL) { // Mark this block as deleted if (poSrcCoordBlock->CommitAsDeleted(m_oBlockManager. GetFirstGarbageBlock()) != 0) return NULL; m_oBlockManager.PushGarbageBlock(poSrcCoordBlock->GetStartAddress()); // Advance to next if (nNextCoordBlock > 0) { if (poSrcCoordBlock->GotoByteInFile(nNextCoordBlock, TRUE) != 0) return NULL; nNextCoordBlock = poSrcCoordBlock->GetNextCoordBlock(); } else { // end of chain delete poSrcCoordBlock; poSrcCoordBlock = NULL; } } } if (poNewObjBlock->CommitToFile() != 0) return NULL; return poNewObjBlock; } /********************************************************************** * TABMAPFile::MoveObjToBlock() * * Moves an object and its coord data to a new ObjBlock. Used when * splitting Obj Blocks. * * May update the value of ppoCoordBlock if a new coord block had to * be created. * * Returns the address where new object is stored on success, -1 on error. **********************************************************************/ int TABMAPFile::MoveObjToBlock(TABMAPObjHdr *poObjHdr, TABMAPCoordBlock *poSrcCoordBlock, TABMAPObjectBlock *poDstObjBlock, TABMAPCoordBlock **ppoDstCoordBlock) { /*----------------------------------------------------------------- * Copy Coord data if applicable * We use a temporary TABFeature object to handle the reading/writing * of coord block data. *----------------------------------------------------------------*/ if (m_poHeader->MapObjectUsesCoordBlock(poObjHdr->m_nType)) { TABMAPObjHdrWithCoord *poObjHdrCoord =(TABMAPObjHdrWithCoord*)poObjHdr; OGRFeatureDefn * poDummyDefn = new OGRFeatureDefn; // Ref count defaults to 0... set it to 1 poDummyDefn->Reference(); TABFeature *poFeature = TABFeature::CreateFromMapInfoType(poObjHdr->m_nType, poDummyDefn); if (PrepareCoordBlock(poObjHdrCoord->m_nType, poDstObjBlock, ppoDstCoordBlock) != 0) return -1; GInt32 nSrcCoordPtr = poObjHdrCoord->m_nCoordBlockPtr; /* Copy Coord data * poObjHdrCoord->m_nCoordBlockPtr will be set by WriteGeometry... * We pass second arg to GotoByteInFile() to force reading from file * if nSrcCoordPtr is not in current block */ if (poSrcCoordBlock->GotoByteInFile(nSrcCoordPtr, TRUE) != 0 || poFeature->ReadGeometryFromMAPFile(this, poObjHdr, TRUE /* bCoordDataOnly */, &poSrcCoordBlock) != 0 || poFeature->WriteGeometryToMAPFile(this, poObjHdr, TRUE /* bCoordDataOnly */, ppoDstCoordBlock) != 0) { delete poFeature; delete poDummyDefn; return -1; } // Update the references to dest coord block in the MAPObjBlock // in case new block has been alloc'd since PrepareCoordBlock() // poDstObjBlock->AddCoordBlockRef((*ppoDstCoordBlock)->GetStartAddress()); /* Cleanup */ delete poFeature; poDummyDefn->Release(); } /*----------------------------------------------------------------- * Prepare and Write ObjHdr to this ObjBlock *----------------------------------------------------------------*/ int nObjPtr = poDstObjBlock->PrepareNewObject(poObjHdr); if (nObjPtr < 0 || poDstObjBlock->CommitNewObject(poObjHdr) != 0) { CPLError(CE_Failure, CPLE_FileIO, "Failed writing object header for feature id %d", poObjHdr->m_nId); return -1; } /*----------------------------------------------------------------- * Update .ID Index *----------------------------------------------------------------*/ m_poIdIndex->SetObjPtr(poObjHdr->m_nId, nObjPtr); return nObjPtr; } /********************************************************************** * TABMAPFile::PrepareCoordBlock() * * Prepare the coord block to receive an object of specified type if one * is needed, and update corresponding members in ObjBlock. * * May update the value of ppoCoordBlock and Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::PrepareCoordBlock(int nObjType, TABMAPObjectBlock *poObjBlock, TABMAPCoordBlock **ppoCoordBlock) { /*----------------------------------------------------------------- * Prepare Coords block... * create a new TABMAPCoordBlock if it was not done yet. * Note that in write mode, TABCollections require read/write access * to the coord block. *----------------------------------------------------------------*/ if (m_poHeader->MapObjectUsesCoordBlock(nObjType)) { if (*ppoCoordBlock == NULL) { *ppoCoordBlock = new TABMAPCoordBlock(m_eAccessMode==TABWrite? TABReadWrite: m_eAccessMode); (*ppoCoordBlock)->InitNewBlock(m_fp, 512, m_oBlockManager.AllocNewBlock()); (*ppoCoordBlock)->SetMAPBlockManagerRef(&m_oBlockManager); // Set the references to this coord block in the MAPObjBlock poObjBlock->AddCoordBlockRef((*ppoCoordBlock)->GetStartAddress()); } if ((*ppoCoordBlock)->GetNumUnusedBytes() < 4) { int nNewBlockOffset = m_oBlockManager.AllocNewBlock(); (*ppoCoordBlock)->SetNextCoordBlock(nNewBlockOffset); (*ppoCoordBlock)->CommitToFile(); (*ppoCoordBlock)->InitNewBlock(m_fp, 512, nNewBlockOffset); } // Make sure read/write pointer is at the end of the block (*ppoCoordBlock)->SeekEnd(); if (CPLGetLastErrorNo() != 0 && CPLGetLastErrorType() == CE_Failure) return -1; } return 0; } /********************************************************************** * TABMAPFile::GetCurObjType() * * Return the MapInfo object type of the object that the m_poCurObjBlock * is pointing to. This value is set after a call to MoveToObjId(). * * Returns a value >= 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::GetCurObjType() { return m_nCurObjType; } /********************************************************************** * TABMAPFile::GetCurObjId() * * Return the MapInfo object id of the object that the m_poCurObjBlock * is pointing to. This value is set after a call to MoveToObjId(). * * Returns a value >= 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::GetCurObjId() { return m_nCurObjId; } /********************************************************************** * TABMAPFile::GetCurObjBlock() * * Return the m_poCurObjBlock. If MoveToObjId() has previously been * called then m_poCurObjBlock points to the beginning of the current * object data. * * Returns a reference to an object owned by this TABMAPFile object, or * NULL on error. **********************************************************************/ TABMAPObjectBlock *TABMAPFile::GetCurObjBlock() { return m_poCurObjBlock; } /********************************************************************** * TABMAPFile::GetCurCoordBlock() * * Return the m_poCurCoordBlock. This function should be used after * PrepareNewObj() to get the reference to the coord block that has * just been initialized. * * Returns a reference to an object owned by this TABMAPFile object, or * NULL on error. **********************************************************************/ TABMAPCoordBlock *TABMAPFile::GetCurCoordBlock() { return m_poCurCoordBlock; } /********************************************************************** * TABMAPFile::GetCoordBlock() * * Return a TABMAPCoordBlock object ready to read coordinates from it. * The block that contains nFileOffset will automatically be * loaded, and if nFileOffset is the beginning of a new block then the * pointer will be moved to the beginning of the data. * * The contents of the returned object is only valid until the next call * to GetCoordBlock(). * * Returns a reference to an object owned by this TABMAPFile object, or * NULL on error. **********************************************************************/ TABMAPCoordBlock *TABMAPFile::GetCoordBlock(int nFileOffset) { if (m_eAccessMode != TABRead) return NULL; if (m_poCurCoordBlock == NULL) { m_poCurCoordBlock = new TABMAPCoordBlock(m_eAccessMode); m_poCurCoordBlock->InitNewBlock(m_fp, 512); } /*----------------------------------------------------------------- * Use GotoByteInFile() to go to the requested location. This will * force loading the block if necessary and reading its header. * If nFileOffset is at the beginning of the requested block, then * we make sure to move the read pointer past the 8 bytes header * to be ready to read coordinates data *----------------------------------------------------------------*/ if ( m_poCurCoordBlock->GotoByteInFile(nFileOffset, TRUE) != 0) { // Failed... an error has already been reported. return NULL; } if (nFileOffset % 512 == 0) m_poCurCoordBlock->GotoByteInBlock(8); // Skip Header return m_poCurCoordBlock; } /********************************************************************** * TABMAPFile::GetHeaderBlock() * * Return a reference to the MAP file's header block. * * The returned pointer is a reference to an object owned by this TABMAPFile * object and should not be deleted by the caller. * * Return NULL if file has not been opened yet. **********************************************************************/ TABMAPHeaderBlock *TABMAPFile::GetHeaderBlock() { return m_poHeader; } /********************************************************************** * TABMAPFile::GetIDFileRef() * * Return a reference to the .ID file attached to this .MAP file * * The returned pointer is a reference to an object owned by this TABMAPFile * object and should not be deleted by the caller. * * Return NULL if file has not been opened yet. **********************************************************************/ TABIDFile *TABMAPFile::GetIDFileRef() { return m_poIdIndex; } /********************************************************************** * TABMAPFile::GetIndexBlock() * * Return a reference to the requested index or object block.. * * Ownership of the returned block is turned over to the caller, who should * delete it when no longer needed. The type of the block can be determined * with the GetBlockType() method. * * @param nFileOffset the offset in the map file of the spatial index * block or object block to load. * * @return The requested TABMAPIndexBlock, TABMAPObjectBlock or NULL if the * read fails for some reason. **********************************************************************/ TABRawBinBlock *TABMAPFile::GetIndexObjectBlock( int nFileOffset ) { /*---------------------------------------------------------------- * Read from the file *---------------------------------------------------------------*/ GByte abyData[512]; if (VSIFSeek(m_fp, nFileOffset, SEEK_SET) != 0 || VSIFRead(abyData, sizeof(GByte), 512, m_fp) != 512 ) { CPLError(CE_Failure, CPLE_FileIO, "GetIndexBlock() failed reading %d bytes at offset %d.", 512, nFileOffset); return NULL; } /* -------------------------------------------------------------------- */ /* Create and initialize depending on the block type. */ /* -------------------------------------------------------------------- */ int nBlockType = abyData[0]; TABRawBinBlock *poBlock; if( nBlockType == TABMAP_INDEX_BLOCK ) poBlock = new TABMAPIndexBlock(); else poBlock = new TABMAPObjectBlock(); if( poBlock->InitBlockFromData(abyData, 512, 512, TRUE, m_fp, nFileOffset) == -1 ) { delete poBlock; poBlock = NULL; } return poBlock; } /********************************************************************** * TABMAPFile::InitDrawingTools() * * Init the drawing tools for this file. * * In Read mode, this will load the drawing tools from the file. * * In Write mode, this function will init an empty the tool def table. * * Reutrns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::InitDrawingTools() { int nStatus = 0; if (m_poHeader == NULL) return -1; // File not opened yet! /*------------------------------------------------------------- * We want to perform this initialisation only ONCE *------------------------------------------------------------*/ if (m_poToolDefTable != NULL) return 0; /*------------------------------------------------------------- * Create a new ToolDefTable... no more initialization is required * unless we want to read tool blocks from file. *------------------------------------------------------------*/ m_poToolDefTable = new TABToolDefTable; if (m_eAccessMode == TABRead && m_poHeader->m_nFirstToolBlock != 0) { TABMAPToolBlock *poBlock; poBlock = new TABMAPToolBlock(m_eAccessMode); poBlock->InitNewBlock(m_fp, 512); /*------------------------------------------------------------- * Use GotoByteInFile() to go to the first block's location. This will * force loading the block if necessary and reading its header. * Also make sure to move the read pointer past the 8 bytes header * to be ready to read drawing tools data *------------------------------------------------------------*/ if ( poBlock->GotoByteInFile(m_poHeader->m_nFirstToolBlock)!= 0) { // Failed... an error has already been reported. delete poBlock; return -1; } poBlock->GotoByteInBlock(8); nStatus = m_poToolDefTable->ReadAllToolDefs(poBlock); delete poBlock; } return nStatus; } /********************************************************************** * TABMAPFile::CommitDrawingTools() * * Write the drawing tools for this file. * * This function applies only to write access mode. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::CommitDrawingTools() { int nStatus = 0; if (m_eAccessMode != TABWrite || m_poHeader == NULL) { CPLError(CE_Failure, CPLE_AssertionFailed, "CommitDrawingTools() failed: file not opened for write access."); return -1; } if (m_poToolDefTable == NULL || (m_poToolDefTable->GetNumPen() + m_poToolDefTable->GetNumBrushes() + m_poToolDefTable->GetNumFonts() + m_poToolDefTable->GetNumSymbols()) == 0) { return 0; // Nothing to do! } /*------------------------------------------------------------- * Create a new TABMAPToolBlock and update header fields *------------------------------------------------------------*/ TABMAPToolBlock *poBlock; poBlock = new TABMAPToolBlock(m_eAccessMode); poBlock->InitNewBlock(m_fp, 512, m_oBlockManager.AllocNewBlock()); poBlock->SetMAPBlockManagerRef(&m_oBlockManager); m_poHeader->m_nFirstToolBlock = poBlock->GetStartAddress(); m_poHeader->m_numPenDefs = (GByte)m_poToolDefTable->GetNumPen(); m_poHeader->m_numBrushDefs = (GByte)m_poToolDefTable->GetNumBrushes(); m_poHeader->m_numFontDefs = (GByte)m_poToolDefTable->GetNumFonts(); m_poHeader->m_numSymbolDefs = (GByte)m_poToolDefTable->GetNumSymbols(); /*------------------------------------------------------------- * Do the actual work and delete poBlock * (Note that poBlock will have already been committed to the file * by WriteAllToolDefs() ) *------------------------------------------------------------*/ nStatus = m_poToolDefTable->WriteAllToolDefs(poBlock); m_poHeader->m_numMapToolBlocks = (GInt16)poBlock->GetNumBlocksInChain(); delete poBlock; return nStatus; } /********************************************************************** * TABMAPFile::ReadPenDef() * * Fill the TABPenDef structure with the definition of the specified pen * index... (1-based pen index) * * If nPenIndex==0 or is invalid, then the structure is cleared. * * Returns 0 on success, -1 on error (i.e. Pen not found). **********************************************************************/ int TABMAPFile::ReadPenDef(int nPenIndex, TABPenDef *psDef) { TABPenDef *psTmp; if (m_poToolDefTable == NULL && InitDrawingTools() != 0) return -1; if (psDef && m_poToolDefTable && (psTmp = m_poToolDefTable->GetPenDefRef(nPenIndex)) != NULL) { *psDef = *psTmp; } else if (psDef) { /* Init to MapInfo default */ static const TABPenDef csDefaultPen = MITAB_PEN_DEFAULT; *psDef = csDefaultPen; return -1; } return 0; } /********************************************************************** * TABMAPFile::WritePenDef() * * Write a Pen Tool to the map file and return the pen index that has * been attributed to this Pen tool definition, or -1 if something went * wrong * * Note that the returned index is a 1-based index. A value of 0 * indicates "none" in MapInfo. * Returns a value >= 0 on success, -1 on error **********************************************************************/ int TABMAPFile::WritePenDef(TABPenDef *psDef) { if (psDef == NULL || (m_poToolDefTable == NULL && InitDrawingTools() != 0) || m_poToolDefTable==NULL ) { return -1; } return m_poToolDefTable->AddPenDefRef(psDef); } /********************************************************************** * TABMAPFile::ReadBrushDef() * * Fill the TABBrushDef structure with the definition of the specified Brush * index... (1-based Brush index) * * If nBrushIndex==0 or is invalid, then the structure is cleared. * * Returns 0 on success, -1 on error (i.e. Brush not found). **********************************************************************/ int TABMAPFile::ReadBrushDef(int nBrushIndex, TABBrushDef *psDef) { TABBrushDef *psTmp; if (m_poToolDefTable == NULL && InitDrawingTools() != 0) return -1; if (psDef && m_poToolDefTable && (psTmp = m_poToolDefTable->GetBrushDefRef(nBrushIndex)) != NULL) { *psDef = *psTmp; } else if (psDef) { /* Init to MapInfo default */ static const TABBrushDef csDefaultBrush = MITAB_BRUSH_DEFAULT; *psDef = csDefaultBrush; return -1; } return 0; } /********************************************************************** * TABMAPFile::WriteBrushDef() * * Write a Brush Tool to the map file and return the Brush index that has * been attributed to this Brush tool definition, or -1 if something went * wrong * * Note that the returned index is a 1-based index. A value of 0 * indicates "none" in MapInfo. * Returns a value >= 0 on success, -1 on error **********************************************************************/ int TABMAPFile::WriteBrushDef(TABBrushDef *psDef) { if (psDef == NULL || (m_poToolDefTable == NULL && InitDrawingTools() != 0) || m_poToolDefTable==NULL ) { return -1; } return m_poToolDefTable->AddBrushDefRef(psDef); } /********************************************************************** * TABMAPFile::ReadFontDef() * * Fill the TABFontDef structure with the definition of the specified Font * index... (1-based Font index) * * If nFontIndex==0 or is invalid, then the structure is cleared. * * Returns 0 on success, -1 on error (i.e. Font not found). **********************************************************************/ int TABMAPFile::ReadFontDef(int nFontIndex, TABFontDef *psDef) { TABFontDef *psTmp; if (m_poToolDefTable == NULL && InitDrawingTools() != 0) return -1; if (psDef && m_poToolDefTable && (psTmp = m_poToolDefTable->GetFontDefRef(nFontIndex)) != NULL) { *psDef = *psTmp; } else if (psDef) { /* Init to MapInfo default */ static const TABFontDef csDefaultFont = MITAB_FONT_DEFAULT; *psDef = csDefaultFont; return -1; } return 0; } /********************************************************************** * TABMAPFile::WriteFontDef() * * Write a Font Tool to the map file and return the Font index that has * been attributed to this Font tool definition, or -1 if something went * wrong * * Note that the returned index is a 1-based index. A value of 0 * indicates "none" in MapInfo. * Returns a value >= 0 on success, -1 on error **********************************************************************/ int TABMAPFile::WriteFontDef(TABFontDef *psDef) { if (psDef == NULL || (m_poToolDefTable == NULL && InitDrawingTools() != 0) || m_poToolDefTable==NULL ) { return -1; } return m_poToolDefTable->AddFontDefRef(psDef); } /********************************************************************** * TABMAPFile::ReadSymbolDef() * * Fill the TABSymbolDef structure with the definition of the specified Symbol * index... (1-based Symbol index) * * If nSymbolIndex==0 or is invalid, then the structure is cleared. * * Returns 0 on success, -1 on error (i.e. Symbol not found). **********************************************************************/ int TABMAPFile::ReadSymbolDef(int nSymbolIndex, TABSymbolDef *psDef) { TABSymbolDef *psTmp; if (m_poToolDefTable == NULL && InitDrawingTools() != 0) return -1; if (psDef && m_poToolDefTable && (psTmp = m_poToolDefTable->GetSymbolDefRef(nSymbolIndex)) != NULL) { *psDef = *psTmp; } else if (psDef) { /* Init to MapInfo default */ static const TABSymbolDef csDefaultSymbol = MITAB_SYMBOL_DEFAULT; *psDef = csDefaultSymbol; return -1; } return 0; } /********************************************************************** * TABMAPFile::WriteSymbolDef() * * Write a Symbol Tool to the map file and return the Symbol index that has * been attributed to this Symbol tool definition, or -1 if something went * wrong * * Note that the returned index is a 1-based index. A value of 0 * indicates "none" in MapInfo. * Returns a value >= 0 on success, -1 on error **********************************************************************/ int TABMAPFile::WriteSymbolDef(TABSymbolDef *psDef) { if (psDef == NULL || (m_poToolDefTable == NULL && InitDrawingTools() != 0) || m_poToolDefTable==NULL ) { return -1; } return m_poToolDefTable->AddSymbolDefRef(psDef); } #define ORDER_MIN_MAX(type,min,max) \ { if( (max) < (min) ) \ { type temp = (max); (max) = (min); (min) = temp; } } /********************************************************************** * TABMAPFile::SetCoordFilter() * * Set the MBR of the area of interest... only objects that at least * overlap with that area will be returned. * * @param sMin minimum x/y the file's projection coord. * @param sMax maximum x/y the file's projection coord. **********************************************************************/ void TABMAPFile::SetCoordFilter(TABVertex sMin, TABVertex sMax) { m_sMinFilter = sMin; m_sMaxFilter = sMax; Coordsys2Int(sMin.x, sMin.y, m_XMinFilter, m_YMinFilter, TRUE); Coordsys2Int(sMax.x, sMax.y, m_XMaxFilter, m_YMaxFilter, TRUE); ORDER_MIN_MAX(int,m_XMinFilter,m_XMaxFilter); ORDER_MIN_MAX(int,m_YMinFilter,m_YMaxFilter); ORDER_MIN_MAX(double,m_sMinFilter.x,m_sMaxFilter.x); ORDER_MIN_MAX(double,m_sMinFilter.y,m_sMaxFilter.y); } /********************************************************************** * TABMAPFile::ResetCoordFilter() * * Reset the MBR of the area of interest to be the extents as defined * in the header. **********************************************************************/ void TABMAPFile::ResetCoordFilter() { m_XMinFilter = m_poHeader->m_nXMin; m_YMinFilter = m_poHeader->m_nYMin; m_XMaxFilter = m_poHeader->m_nXMax; m_YMaxFilter = m_poHeader->m_nYMax; Int2Coordsys(m_XMinFilter, m_YMinFilter, m_sMinFilter.x, m_sMinFilter.y); Int2Coordsys(m_XMaxFilter, m_YMaxFilter, m_sMaxFilter.x, m_sMaxFilter.y); ORDER_MIN_MAX(int,m_XMinFilter,m_XMaxFilter); ORDER_MIN_MAX(int,m_YMinFilter,m_YMaxFilter); ORDER_MIN_MAX(double,m_sMinFilter.x,m_sMaxFilter.x); ORDER_MIN_MAX(double,m_sMinFilter.y,m_sMaxFilter.y); } /********************************************************************** * TABMAPFile::GetCoordFilter() * * Get the MBR of the area of interest, as previously set by * SetCoordFilter(). * * @param sMin vertex into which the minimum x/y values put in coordsys space. * @param sMax vertex into which the maximum x/y values put in coordsys space. **********************************************************************/ void TABMAPFile::GetCoordFilter(TABVertex &sMin, TABVertex &sMax) { sMin = m_sMinFilter; sMax = m_sMaxFilter; } /********************************************************************** * TABMAPFile::CommitSpatialIndex() * * Write the spatial index blocks tree for this file. * * This function applies only to write access mode. * * Returns 0 on success, -1 on error. **********************************************************************/ int TABMAPFile::CommitSpatialIndex() { if (m_eAccessMode != TABWrite || m_poHeader == NULL) { CPLError(CE_Failure, CPLE_AssertionFailed, "CommitSpatialIndex() failed: file not opened for write access."); return -1; } if (m_poSpIndex == NULL) { return 0; // Nothing to do! } /*------------------------------------------------------------- * Update header fields and commit index block * (it's children will be recursively committed as well) *------------------------------------------------------------*/ // Add 1 to Spatial Index Depth to account to the MapObjectBlocks m_poHeader->m_nMaxSpIndexDepth = MAX(m_poHeader->m_nMaxSpIndexDepth, (GByte)m_poSpIndex->GetCurMaxDepth()+1); m_poSpIndex->GetMBR(m_poHeader->m_nXMin, m_poHeader->m_nYMin, m_poHeader->m_nXMax, m_poHeader->m_nYMax); return m_poSpIndex->CommitToFile(); } /********************************************************************** * TABMAPFile::GetMinTABFileVersion() * * Returns the minimum TAB file version number that can contain all the * objects stored in this file. **********************************************************************/ int TABMAPFile::GetMinTABFileVersion() { int nToolVersion = 0; if (m_poToolDefTable) nToolVersion = m_poToolDefTable->GetMinVersionNumber(); return MAX(nToolVersion, m_nMinTABVersion); } /********************************************************************** * TABMAPFile::Dump() * * Dump block contents... available only in DEBUG mode. **********************************************************************/ #ifdef DEBUG void TABMAPFile::Dump(FILE *fpOut /*=NULL*/) { if (fpOut == NULL) fpOut = stdout; fprintf(fpOut, "----- TABMAPFile::Dump() -----\n"); if (m_fp == NULL) { fprintf(fpOut, "File is not opened.\n"); } else { fprintf(fpOut, "File is opened: %s\n", m_pszFname); fprintf(fpOut, "Coordsys filter = (%g,%g)-(%g,%g)\n", m_sMinFilter.x, m_sMinFilter.y, m_sMaxFilter.x,m_sMaxFilter.y); fprintf(fpOut, "Int coord filter = (%d,%d)-(%d,%d)\n", m_XMinFilter, m_YMinFilter, m_XMaxFilter,m_YMaxFilter); fprintf(fpOut, "\nFile Header follows ...\n\n"); m_poHeader->Dump(fpOut); fprintf(fpOut, "... end of file header.\n\n"); fprintf(fpOut, "Associated .ID file ...\n\n"); m_poIdIndex->Dump(fpOut); fprintf(fpOut, "... end of ID file dump.\n\n"); } fflush(fpOut); } #endif // DEBUG /********************************************************************** * TABMAPFile::DumpSpatialIndexToMIF() * * Dump the spatial index tree... available only in DEBUG mode. **********************************************************************/ #ifdef DEBUG void TABMAPFile::DumpSpatialIndexToMIF(TABMAPIndexBlock *poNode, FILE *fpMIF, FILE *fpMID, int nParentId /*=-1*/, int nIndexInNode /*=-1*/, int nCurDepth /*=0*/, int nMaxDepth /*=-1*/) { if (poNode == NULL) { if (m_poHeader && m_poHeader->m_nFirstIndexBlock != 0) { TABRawBinBlock *poBlock; poBlock = GetIndexObjectBlock(m_poHeader->m_nFirstIndexBlock); if (poBlock && poBlock->GetBlockType() == TABMAP_INDEX_BLOCK) poNode = (TABMAPIndexBlock *)poBlock; } if (poNode == NULL) return; } /*------------------------------------------------------------- * Report info on current tree node *------------------------------------------------------------*/ int numEntries = poNode->GetNumEntries(); GInt32 nXMin, nYMin, nXMax, nYMax; double dXMin, dYMin, dXMax, dYMax; poNode->RecomputeMBR(); poNode->GetMBR(nXMin, nYMin, nXMax, nYMax); Int2Coordsys(nXMin, nYMin, dXMin, dYMin); Int2Coordsys(nXMax, nYMax, dXMax, dYMax); VSIFPrintf(fpMIF, "RECT %g %g %g %g\n", dXMin, dYMin, dXMax, dYMax); VSIFPrintf(fpMIF, " Brush(1, 0)\n"); /* No fill */ VSIFPrintf(fpMID, "%d,%d,%d,%d,%g,%d,%d,%d,%d\n", poNode->GetStartAddress(), nParentId, nIndexInNode, nCurDepth, MITAB_AREA(nXMin, nYMin, nXMax, nYMax), nXMin, nYMin, nXMax, nYMax); if (nMaxDepth != 0) { /*------------------------------------------------------------- * Loop through all entries, dumping each of them *------------------------------------------------------------*/ for(int i=0; i<numEntries; i++) { TABMAPIndexEntry *psEntry = poNode->GetEntry(i); TABRawBinBlock *poBlock; poBlock = GetIndexObjectBlock( psEntry->nBlockPtr ); if( poBlock == NULL ) continue; if( poBlock->GetBlockType() == TABMAP_INDEX_BLOCK ) { /* Index block, dump recursively */ DumpSpatialIndexToMIF((TABMAPIndexBlock *)poBlock, fpMIF, fpMID, poNode->GetStartAddress(), i, nCurDepth+1, nMaxDepth-1); } else { /* Object block, dump directly */ CPLAssert( poBlock->GetBlockType() == TABMAP_OBJECT_BLOCK ); Int2Coordsys(psEntry->XMin, psEntry->YMin, dXMin, dYMin); Int2Coordsys(psEntry->XMax, psEntry->YMax, dXMax, dYMax); VSIFPrintf(fpMIF, "RECT %g %g %g %g\n", dXMin, dYMin, dXMax, dYMax); VSIFPrintf(fpMIF, " Brush(1, 0)\n"); /* No fill */ VSIFPrintf(fpMID, "%d,%d,%d,%d,%g,%d,%d,%d,%d\n", psEntry->nBlockPtr, poNode->GetStartAddress(), i, nCurDepth+1, MITAB_AREA(psEntry->XMin, psEntry->YMin, psEntry->XMax, psEntry->YMax), psEntry->XMin, psEntry->YMin, psEntry->XMax, psEntry->YMax); } delete poBlock; } } } #endif // DEBUG