/****************************************************************************** * $Id: ogrs57layer.cpp 10646 2007-01-18 02:38:10Z warmerdam $ * * Project:  S-57 Translator * Purpose:  Implements OGRS57Layer 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_s57.h"#include "cpl_conv.h"#include "cpl_string.h"CPL_CVSID("$Id: ogrs57layer.cpp 10646 2007-01-18 02:38:10Z warmerdam $");/************************************************************************//*                            OGRS57Layer()                             *//*                                                                      *//*      Note that the OGRS57Layer assumes ownership of the passed       *//*      OGRFeatureDefn object.                                          *//************************************************************************/OGRS57Layer::OGRS57Layer( OGRS57DataSource *poDSIn,                          OGRFeatureDefn * poDefnIn,                          int nFeatureCountIn,                          int nOBJLIn){    poDS = poDSIn;    nFeatureCount = nFeatureCountIn;    poFeatureDefn = poDefnIn;    nOBJL = nOBJLIn;    nNextFEIndex = 0;    nCurrentModule = -1;    if( EQUAL(poDefnIn->GetName(),OGRN_VI) )        nRCNM = RCNM_VI;    else if( EQUAL(poDefnIn->GetName(),OGRN_VC) )        nRCNM = RCNM_VC;    else if( EQUAL(poDefnIn->GetName(),OGRN_VE) )        nRCNM = RCNM_VE;    else if( EQUAL(poDefnIn->GetName(),OGRN_VF) )        nRCNM = RCNM_VF;    else if( EQUAL(poDefnIn->GetName(),"DSID") )        nRCNM = RCNM_DSID;    else         nRCNM = 100;  /* feature */}/************************************************************************//*                           ~OGRS57Layer()                           *//************************************************************************/OGRS57Layer::~OGRS57Layer(){    if( m_nFeaturesRead > 0 && poFeatureDefn != NULL )    {        CPLDebug( "S57", "%d features read on layer '%s'.",                  (int) m_nFeaturesRead,                   poFeatureDefn->GetName() );    }    poFeatureDefn->Release();}/************************************************************************//*                            ResetReading()                            *//************************************************************************/void OGRS57Layer::ResetReading(){    nNextFEIndex = 0;    nCurrentModule = -1;}/************************************************************************//*                      GetNextUnfilteredFeature()                      *//************************************************************************/OGRFeature *OGRS57Layer::GetNextUnfilteredFeature(){    OGRFeature  *poFeature = NULL;    /* -------------------------------------------------------------------- *//*      Are we out of modules to request features from?                 *//* -------------------------------------------------------------------- */    if( nCurrentModule >= poDS->GetModuleCount() )        return NULL;/* -------------------------------------------------------------------- *//*      Set the current position on the current module and fetch a      *//*      feature.                                                        *//* -------------------------------------------------------------------- */    S57Reader   *poReader = poDS->GetModule(nCurrentModule);        if( poReader != NULL )    {        poReader->SetNextFEIndex( nNextFEIndex, nRCNM );        poFeature = poReader->ReadNextFeature( poFeatureDefn );        nNextFEIndex = poReader->GetNextFEIndex( nRCNM );    }/* -------------------------------------------------------------------- *//*      If we didn't get a feature we need to move onto the next file.  *//* -------------------------------------------------------------------- */    if( poFeature == NULL )    {        nCurrentModule++;        poReader = poDS->GetModule(nCurrentModule);        if( poReader != NULL && poReader->GetModule() == NULL )        {            if( !poReader->Open( FALSE ) )                return NULL;        }        return GetNextUnfilteredFeature();    }    else    {        m_nFeaturesRead++;        if( poFeature->GetGeometryRef() != NULL )            poFeature->GetGeometryRef()->assignSpatialReference(                GetSpatialRef() );    }        return poFeature;}/************************************************************************//*                           GetNextFeature()                           *//************************************************************************/OGRFeature *OGRS57Layer::GetNextFeature(){    OGRFeature  *poFeature = NULL;/* -------------------------------------------------------------------- *//*      Read features till we find one that satisfies our current       *//*      spatial criteria.                                               *//* -------------------------------------------------------------------- */    while( TRUE )    {        poFeature = GetNextUnfilteredFeature();        if( poFeature == NULL )            break;        if( (m_poFilterGeom == NULL             || FilterGeometry(poFeature->GetGeometryRef()) )            && (m_poAttrQuery == NULL                || m_poAttrQuery->Evaluate( poFeature )) )            break;        delete poFeature;    }    return poFeature;}/************************************************************************//*                           TestCapability()                           *//************************************************************************/int OGRS57Layer::TestCapability( const char * pszCap ){    if( EQUAL(pszCap,OLCRandomRead) )        return FALSE;    else if( EQUAL(pszCap,OLCSequentialWrite) )        return TRUE;    else if( EQUAL(pszCap,OLCRandomWrite) )        return FALSE;    else if( EQUAL(pszCap,OLCFastFeatureCount) )        return TRUE;    else if( EQUAL(pszCap,OLCFastGetExtent) )    {        OGREnvelope oEnvelope;        return GetExtent( &oEnvelope, FALSE ) == OGRERR_NONE;    }    else if( EQUAL(pszCap,OLCFastSpatialFilter) )        return FALSE;    else         return FALSE;}/************************************************************************//*                           GetSpatialRef()                            *//************************************************************************/OGRSpatialReference *OGRS57Layer::GetSpatialRef(){    return poDS->GetSpatialRef();}/************************************************************************//*                             GetExtent()                              *//************************************************************************/OGRErr OGRS57Layer::GetExtent( OGREnvelope *psExtent, int bForce ){    return poDS->GetDSExtent( psExtent, bForce );}/************************************************************************//*                          GetFeatureCount()                           *//************************************************************************/int OGRS57Layer::GetFeatureCount (int bForce){        if( m_poFilterGeom != NULL || m_poAttrQuery != NULL         || nFeatureCount == -1 )        return OGRLayer::GetFeatureCount( bForce );    else        return nFeatureCount;}/************************************************************************//*                             GetFeature()                             *//************************************************************************/OGRFeature *OGRS57Layer::GetFeature( long nFeatureId ){    S57Reader   *poReader = poDS->GetModule(0); // not multi-reader aware    if( poReader != NULL )    {        OGRFeature      *poFeature;        poFeature = poReader->ReadFeature( nFeatureId, poFeatureDefn );        if( poFeature != NULL &&  poFeature->GetGeometryRef() != NULL )            poFeature->GetGeometryRef()->assignSpatialReference(                GetSpatialRef() );        return poFeature;    }    else        return NULL;}/************************************************************************//*                           CreateFeature()                            *//************************************************************************/OGRErr OGRS57Layer::CreateFeature( OGRFeature *poFeature ){/* -------------------------------------------------------------------- *//*      Set RCNM if not already set.                                    *//* -------------------------------------------------------------------- */    int iRCNMFld = poFeature->GetFieldIndex( "RCNM" );    if( iRCNMFld != -1 )    {        if( !poFeature->IsFieldSet( iRCNMFld ) )            poFeature->SetField( iRCNMFld, nRCNM );        else            CPLAssert( poFeature->GetFieldAsInteger( iRCNMFld ) == nRCNM );    }/* -------------------------------------------------------------------- *//*      Set OBJL if not already set.                                    *//* -------------------------------------------------------------------- */    if( nOBJL != -1 )    {        int iOBJLFld = poFeature->GetFieldIndex( "OBJL" );        if( !poFeature->IsFieldSet( iOBJLFld ) )            poFeature->SetField( iOBJLFld, nOBJL );        else            CPLAssert( poFeature->GetFieldAsInteger( iOBJLFld ) == nOBJL );    }/* -------------------------------------------------------------------- *//*      Create the isolated node feature.                               *//* -------------------------------------------------------------------- */    if( poDS->GetWriter()->WriteCompleteFeature( poFeature ) )        return OGRERR_NONE;    else        return OGRERR_FAILURE;}