/****************************************************************************** * $Id: ogrsdtslayer.cpp 10646 2007-01-18 02:38:10Z warmerdam $ * * Project:  SDTSReader * Purpose:  Implements OGRSDTSLayer class. * Author:   Frank Warmerdam, warmerdam@pobox.com * ****************************************************************************** * Copyright (c) 1999, Frank Warmerdam * * 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. ****************************************************************************/#include "ogr_sdts.h"#include "cpl_conv.h"#include "cpl_string.h"CPL_CVSID("$Id: ogrsdtslayer.cpp 10646 2007-01-18 02:38:10Z warmerdam $");/************************************************************************//*                            OGRSDTSLayer()                            *//*                                                                      *//*      Note that the OGRSDTSLayer assumes ownership of the passed      *//*      OGRFeatureDefn object.                                          *//************************************************************************/OGRSDTSLayer::OGRSDTSLayer( SDTSTransfer * poTransferIn, int iLayerIn,                            OGRSDTSDataSource * poDSIn ){    poDS = poDSIn;    poTransfer = poTransferIn;    iLayer = iLayerIn;    poReader = poTransfer->GetLayerIndexedReader( iLayer );/* -------------------------------------------------------------------- *//*      Define the feature.                                             *//* -------------------------------------------------------------------- */    int         iCATDEntry = poTransfer->GetLayerCATDEntry( iLayer );        poFeatureDefn =        new OGRFeatureDefn(poTransfer->GetCATD()->GetEntryModule(iCATDEntry));    poFeatureDefn->Reference();    OGRFieldDefn oRecId( "RCID", OFTInteger );    poFeatureDefn->AddFieldDefn( &oRecId );    if( poTransfer->GetLayerType(iLayer) == SLTPoint )    {        poFeatureDefn->SetGeomType( wkbPoint );    }    else if( poTransfer->GetLayerType(iLayer) == SLTLine )    {        poFeatureDefn->SetGeomType( wkbLineString );        oRecId.SetName( "SNID" );        poFeatureDefn->AddFieldDefn( &oRecId );        oRecId.SetName( "ENID" );        poFeatureDefn->AddFieldDefn( &oRecId );    }    else if( poTransfer->GetLayerType(iLayer) == SLTPoly )    {        poFeatureDefn->SetGeomType( wkbPolygon );    }    else if( poTransfer->GetLayerType(iLayer) == SLTAttr )    {        poFeatureDefn->SetGeomType( wkbNone );    }/* -------------------------------------------------------------------- *//*      Add schema from referenced attribute records.                   *//* -------------------------------------------------------------------- */    char        **papszATIDRefs = NULL;        if( poTransfer->GetLayerType(iLayer) != SLTAttr )        papszATIDRefs = poReader->ScanModuleReferences();    else        papszATIDRefs = CSLAddString( papszATIDRefs,                                       poTransfer->GetCATD()->GetEntryModule(iCATDEntry) );    for( int iTable = 0;         papszATIDRefs != NULL && papszATIDRefs[iTable] != NULL;         iTable++ )    {        SDTSAttrReader  *poAttrReader;        DDFFieldDefn    *poFDefn;        /* -------------------------------------------------------------------- *//*      Get the attribute table reader, and the associated user         *//*      attribute field.                                                *//* -------------------------------------------------------------------- */        poAttrReader = (SDTSAttrReader *)            poTransfer->GetLayerIndexedReader(                poTransfer->FindLayer( papszATIDRefs[iTable] ) );        if( poAttrReader == NULL )            continue;        poFDefn = poAttrReader->GetModule()->FindFieldDefn( "ATTP" );        if( poFDefn == NULL )            poFDefn = poAttrReader->GetModule()->FindFieldDefn( "ATTS" );        if( poFDefn == NULL )            continue;        /* -------------------------------------------------------------------- *//*      Process each user subfield on the attribute table into an       *//*      OGR field definition.                                           *//* -------------------------------------------------------------------- */        for( int iSF=0; iSF < poFDefn->GetSubfieldCount(); iSF++ )        {            DDFSubfieldDefn     *poSFDefn = poFDefn->GetSubfield( iSF );            int                 nWidth = poSFDefn->GetWidth();            char                *pszFieldName;            if( poFeatureDefn->GetFieldIndex( poSFDefn->GetName() ) != -1 )                pszFieldName = CPLStrdup( CPLSPrintf( "%s_%s",                                                      papszATIDRefs[iTable],                                                      poSFDefn->GetName() ) );            else                pszFieldName = CPLStrdup( poSFDefn->GetName() );                        switch( poSFDefn->GetType() )            {              case DDFString:              {                  OGRFieldDefn  oStrField( pszFieldName, OFTString );                  if( nWidth != 0 )                      oStrField.SetWidth( nWidth );                  poFeatureDefn->AddFieldDefn( &oStrField );              }              break;              case DDFInt:              {                  OGRFieldDefn  oIntField( pszFieldName, OFTInteger );                  if( nWidth != 0 )                      oIntField.SetWidth( nWidth );                  poFeatureDefn->AddFieldDefn( &oIntField );              }              break;              case DDFFloat:              {                  OGRFieldDefn  oRealField( pszFieldName, OFTReal );                  // We don't have a precision in DDF files, so we never even                  // use the width.  Otherwise with a precision of zero the                  // result would look like an integer.                  poFeatureDefn->AddFieldDefn( &oRealField );              }              break;              default:                break;            }            CPLFree( pszFieldName );                    } /* next iSF (subfield) */    } /* next iTable */    CSLDestroy( papszATIDRefs );}/************************************************************************//*                           ~OGRSDTSLayer()                           *//************************************************************************/OGRSDTSLayer::~OGRSDTSLayer(){    if( m_nFeaturesRead > 0 && poFeatureDefn != NULL )    {        CPLDebug( "SDTS", "%d features read on layer '%s'.",                  (int) m_nFeaturesRead,                   poFeatureDefn->GetName() );    }    if( poFeatureDefn )        poFeatureDefn->Release();}/************************************************************************//*                            ResetReading()                            *//************************************************************************/void OGRSDTSLayer::ResetReading(){    poReader->Rewind();}/************************************************************************//*                     AssignAttrRecordToFeature()                      *//************************************************************************/static voidAssignAttrRecordToFeature( OGRFeature * poFeature, SDTSTransfer * poTransfer,                            DDFField * poSR ){/* -------------------------------------------------------------------- *//*      Process each subfield in the record.                            *//* -------------------------------------------------------------------- */    DDFFieldDefn        *poFDefn = poSR->GetFieldDefn();            for( int iSF=0; iSF < poFDefn->GetSubfieldCount(); iSF++ )    {        DDFSubfieldDefn *poSFDefn = poFDefn->GetSubfield( iSF );        int                     iField;        int                     nMaxBytes;        const char *    pachData = poSR->GetSubfieldData(poSFDefn,                                                         &nMaxBytes);/* -------------------------------------------------------------------- *//*      Indentify this field on the feature.                            *//* -------------------------------------------------------------------- */        iField = poFeature->GetFieldIndex( poSFDefn->GetName() );/* -------------------------------------------------------------------- *//*      Handle each of the types.                                       *//* -------------------------------------------------------------------- */