/********************************************************************** * SearchIndex() * * Search a TAB dataset's .IND file for pszVal in index nIndexNo **********************************************************************/ static int SearchIndex(const char *pszFname, int nIndexNo, const char *pszVal) { TABFile oTABFile; TABINDFile *poINDFile; /*--------------------------------------------------------------------- * Try to open source file *--------------------------------------------------------------------*/ if (oTABFile.Open(pszFname, "rb") != 0) { printf("Failed to open %s as a TABFile.\n", pszFname); return -1; } /*--------------------------------------------------------------------- * Fetch IND file handle *--------------------------------------------------------------------*/ if ((poINDFile = oTABFile.GetINDFileRef()) == NULL) { printf("Dataset %s has no .IND file\n", pszFname); return -1; } /*--------------------------------------------------------------------- * Search the index. * For now we search only 'char' index types!!! *--------------------------------------------------------------------*/ GByte *pKey; int nRecordNo; pKey = poINDFile->BuildKey(nIndexNo, pszVal); nRecordNo = poINDFile->FindFirst(nIndexNo, pKey); if (nRecordNo < 1) { printf("Value '%s' not found in index #%d\n", pszVal, nIndexNo); } else { while(nRecordNo > 0) { printf("Record %d...\n", nRecordNo); nRecordNo = poINDFile->FindNext(nIndexNo, pKey); } } /*--------------------------------------------------------------------- * Cleanup and exit. *--------------------------------------------------------------------*/ oTABFile.Close(); return 0; }
int OGRTABDataSource::Create( const char * pszName, char **papszOptions ) { CPLAssert(m_pszName == nullptr); m_pszName = CPLStrdup(pszName); m_papszOptions = CSLDuplicate(papszOptions); m_bUpdate = TRUE; const char *pszOpt = CSLFetchNameValue(papszOptions, "FORMAT"); if( pszOpt != nullptr && EQUAL(pszOpt, "MIF") ) m_bCreateMIF = TRUE; else if( EQUAL(CPLGetExtension(pszName),"mif") || EQUAL(CPLGetExtension(pszName),"mid") ) m_bCreateMIF = TRUE; if( (pszOpt = CSLFetchNameValue(papszOptions,"SPATIAL_INDEX_MODE")) != nullptr ) { if( EQUAL(pszOpt, "QUICK") ) m_bQuickSpatialIndexMode = TRUE; else if( EQUAL(pszOpt, "OPTIMIZED") ) m_bQuickSpatialIndexMode = FALSE; } m_nBlockSize = atoi(CSLFetchNameValueDef(papszOptions, "BLOCKSIZE", "512")); // Create a new empty directory. VSIStatBufL sStat; if( strlen(CPLGetExtension(pszName)) == 0 ) { if( VSIStatL( pszName, &sStat ) == 0 ) { if( !VSI_ISDIR(sStat.st_mode) ) { CPLError(CE_Failure, CPLE_OpenFailed, "Attempt to create dataset named %s,\n" "but that is an existing file.", pszName); return FALSE; } } else { if( VSIMkdir(pszName, 0755) != 0 ) { CPLError(CE_Failure, CPLE_AppDefined, "Unable to create directory %s.", pszName); return FALSE; } } m_pszDirectory = CPLStrdup(pszName); } // Create a new single file. else { IMapInfoFile *poFile = nullptr; const char *pszEncoding( CSLFetchNameValue( papszOptions, "ENCODING" ) ); const char *pszCharset( IMapInfoFile::EncodingToCharset( pszEncoding ) ); if( m_bCreateMIF ) { poFile = new MIFFile; if( poFile->Open(m_pszName, TABWrite, FALSE, pszCharset) != 0 ) { delete poFile; return FALSE; } } else { TABFile *poTabFile = new TABFile; if( poTabFile->Open(m_pszName, TABWrite, FALSE, m_nBlockSize, pszCharset) != 0 ) { delete poTabFile; return FALSE; } poFile = poTabFile; } m_nLayerCount = 1; m_papoLayers = static_cast<IMapInfoFile **>(CPLMalloc(sizeof(void *))); m_papoLayers[0] = poFile; m_pszDirectory = CPLStrdup(CPLGetPath(pszName)); m_bSingleFile = TRUE; } return TRUE; }
OGRLayer * OGRTABDataSource::ICreateLayer( const char *pszLayerName, OGRSpatialReference *poSRSIn, OGRwkbGeometryType /* eGeomTypeIn */, char **papszOptions ) { if( !m_bUpdate ) { CPLError( CE_Failure, CPLE_AppDefined, "Cannot create layer on read-only dataset."); return nullptr; } // If it is a single file mode file, then we may have already // instantiated the low level layer. We would just need to // reset the coordinate system and (potentially) bounds. IMapInfoFile *poFile = nullptr; char *pszFullFilename = nullptr; const char *pszEncoding = CSLFetchNameValue( papszOptions, "ENCODING" ); const char *pszCharset( IMapInfoFile::EncodingToCharset( pszEncoding ) ); if( m_bSingleFile ) { if( m_bSingleLayerAlreadyCreated ) { CPLError( CE_Failure, CPLE_AppDefined, "Unable to create new layers in this single file dataset."); return nullptr; } m_bSingleLayerAlreadyCreated = TRUE; poFile = (IMapInfoFile *) m_papoLayers[0]; if( pszEncoding ) poFile->SetCharset( pszCharset ); } else { if( m_bCreateMIF ) { pszFullFilename = CPLStrdup(CPLFormFilename(m_pszDirectory, pszLayerName, "mif")); poFile = new MIFFile; if( poFile->Open(pszFullFilename, TABWrite, FALSE, pszCharset) != 0 ) { CPLFree(pszFullFilename); delete poFile; return nullptr; } } else { pszFullFilename = CPLStrdup(CPLFormFilename(m_pszDirectory, pszLayerName, "tab")); TABFile *poTABFile = new TABFile; if( poTABFile->Open(pszFullFilename, TABWrite, FALSE, m_nBlockSize, pszCharset) != 0 ) { CPLFree(pszFullFilename); delete poTABFile; return nullptr; } poFile = poTABFile; } m_nLayerCount++; m_papoLayers = static_cast<IMapInfoFile **>( CPLRealloc(m_papoLayers,sizeof(void*)*m_nLayerCount)); m_papoLayers[m_nLayerCount-1] = poFile; CPLFree(pszFullFilename); } poFile->SetDescription(poFile->GetName()); // Assign the coordinate system (if provided) and set // reasonable bounds. if( poSRSIn != nullptr ) { poFile->SetSpatialRef(poSRSIn); // SetSpatialRef() has cloned the passed geometry poFile->GetLayerDefn()->GetGeomFieldDefn(0)->SetSpatialRef( poFile->GetSpatialRef()); } // Pull out the bounds if supplied const char *pszOpt = nullptr; if( (pszOpt = CSLFetchNameValue(papszOptions, "BOUNDS")) != nullptr ) { double dfBounds[4]; if( CPLsscanf(pszOpt, "%lf,%lf,%lf,%lf", &dfBounds[0], &dfBounds[1], &dfBounds[2], &dfBounds[3]) != 4 ) { CPLError( CE_Failure, CPLE_IllegalArg, "Invalid BOUNDS parameter, expected min_x,min_y,max_x,max_y"); } else { poFile->SetBounds(dfBounds[0], dfBounds[1], dfBounds[2], dfBounds[3]); } } if( !poFile->IsBoundsSet() && !m_bCreateMIF ) { if( poSRSIn != nullptr && poSRSIn->GetRoot() != nullptr && EQUAL(poSRSIn->GetRoot()->GetValue(),"GEOGCS") ) poFile->SetBounds(-1000, -1000, 1000, 1000); else poFile->SetBounds(-30000000, -15000000, 30000000, 15000000); } if(m_bQuickSpatialIndexMode == TRUE && poFile->SetQuickSpatialIndexMode(TRUE) != 0) { CPLError(CE_Warning, CPLE_AppDefined, "Setting Quick Spatial Index Mode failed."); } else if(m_bQuickSpatialIndexMode == FALSE && poFile->SetQuickSpatialIndexMode(FALSE) != 0) { CPLError(CE_Warning, CPLE_AppDefined, "Setting Normal Spatial Index Mode failed."); } return poFile; }