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;
}
int OGRS57DataSource::Open( const char * pszFilename, int bTestOpen )
{
int iModule;
pszName = CPLStrdup( pszFilename );
/* -------------------------------------------------------------------- */
/* Check a few bits of the header to see if it looks like an */
/* S57 file (really, if it looks like an ISO8211 file). */
/* -------------------------------------------------------------------- */
if( bTestOpen )
{
FILE *fp;
char pachLeader[10];
fp = VSIFOpenL( pszFilename, "rb" );
if( fp == NULL )
return FALSE;
if( VSIFReadL( pachLeader, 1, 10, fp ) != 10
|| (pachLeader[5] != '1' && pachLeader[5] != '2'
&& pachLeader[5] != '3' )
|| pachLeader[6] != 'L'
|| (pachLeader[8] != '1' && pachLeader[8] != ' ') )
{
VSIFCloseL( fp );
return FALSE;
}
VSIFCloseL( fp );
}
/* -------------------------------------------------------------------- */
/* Setup reader options. */
/* -------------------------------------------------------------------- */
char **papszReaderOptions = NULL;
S57Reader *poModule;
poModule = new S57Reader( pszFilename );
papszReaderOptions = CSLSetNameValue(papszReaderOptions,
S57O_LNAM_REFS, "ON" );
if( GetOption(S57O_UPDATES) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_UPDATES,
GetOption(S57O_UPDATES));
if( GetOption(S57O_SPLIT_MULTIPOINT) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_SPLIT_MULTIPOINT,
GetOption(S57O_SPLIT_MULTIPOINT) );
if( GetOption(S57O_ADD_SOUNDG_DEPTH) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_ADD_SOUNDG_DEPTH,
GetOption(S57O_ADD_SOUNDG_DEPTH));
if( GetOption(S57O_PRESERVE_EMPTY_NUMBERS) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_PRESERVE_EMPTY_NUMBERS,
GetOption(S57O_PRESERVE_EMPTY_NUMBERS) );
if( GetOption(S57O_RETURN_PRIMITIVES) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_RETURN_PRIMITIVES,
GetOption(S57O_RETURN_PRIMITIVES) );
if( GetOption(S57O_RETURN_LINKAGES) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_RETURN_LINKAGES,
GetOption(S57O_RETURN_LINKAGES) );
if( GetOption(S57O_RETURN_DSID) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_RETURN_DSID,
GetOption(S57O_RETURN_DSID) );
poModule->SetOptions( papszReaderOptions );
CSLDestroy( papszReaderOptions );
/* -------------------------------------------------------------------- */
/* Try opening. */
/* */
/* Eventually this should check for catalogs, and if found */
/* instantiate a whole series of modules. */
/* -------------------------------------------------------------------- */
if( !poModule->Open( bTestOpen ) )
{
delete poModule;
return FALSE;
}
int bSuccess = TRUE;
nModules = 1;
papoModules = (S57Reader **) CPLMalloc(sizeof(void*));
papoModules[0] = poModule;
/* -------------------------------------------------------------------- */
/* Add the header layers if they are called for. */
/* -------------------------------------------------------------------- */
if( GetOption( S57O_RETURN_DSID ) == NULL
|| CSLTestBoolean(GetOption( S57O_RETURN_DSID )) )
{
OGRFeatureDefn *poDefn;
poDefn = S57GenerateDSIDFeatureDefn();
AddLayer( new OGRS57Layer( this, poDefn ) );
}
/* -------------------------------------------------------------------- */
/* Add the primitive layers if they are called for. */
/* -------------------------------------------------------------------- */
if( GetOption( S57O_RETURN_PRIMITIVES ) != NULL )
{
OGRFeatureDefn *poDefn;
poDefn = S57GenerateVectorPrimitiveFeatureDefn( RCNM_VI, poModule->GetOptionFlags());
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateVectorPrimitiveFeatureDefn( RCNM_VC, poModule->GetOptionFlags());
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateVectorPrimitiveFeatureDefn( RCNM_VE, poModule->GetOptionFlags());
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateVectorPrimitiveFeatureDefn( RCNM_VF, poModule->GetOptionFlags());
AddLayer( new OGRS57Layer( this, poDefn ) );
}
/* -------------------------------------------------------------------- */
/* Initialize a layer for each type of geometry. Eventually */
/* we will do this by object class. */
/* -------------------------------------------------------------------- */
if( OGRS57Driver::GetS57Registrar() == NULL )
{
OGRFeatureDefn *poDefn;
poDefn = S57GenerateGeomFeatureDefn( wkbPoint,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateGeomFeatureDefn( wkbLineString,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateGeomFeatureDefn( wkbPolygon,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateGeomFeatureDefn( wkbNone,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
}
/* -------------------------------------------------------------------- */
/* Initialize a feature definition for each class that actually */
/* occurs in the dataset. */
/* -------------------------------------------------------------------- */
else
{
OGRFeatureDefn *poDefn;
int *panClassCount;
int iClass, bGeneric = FALSE;
for( iModule = 0; iModule < nModules; iModule++ )
papoModules[iModule]->SetClassBased( OGRS57Driver::GetS57Registrar() );
panClassCount = (int *) CPLCalloc(sizeof(int),MAX_CLASSES);
for( iModule = 0; iModule < nModules; iModule++ )
{
bSuccess &=
papoModules[iModule]->CollectClassList(panClassCount,
MAX_CLASSES);
}
for( iClass = 0; iClass < MAX_CLASSES; iClass++ )
{
if( panClassCount[iClass] > 0 )
{
poDefn =
S57GenerateObjectClassDefn( OGRS57Driver::GetS57Registrar(),
iClass,
poModule->GetOptionFlags() );
if( poDefn != NULL )
AddLayer( new OGRS57Layer( this, poDefn,
panClassCount[iClass] ) );
else
{
bGeneric = TRUE;
CPLDebug( "S57",
"Unable to find definition for OBJL=%d\n",
iClass );
}
}
}
if( bGeneric )
{
poDefn = S57GenerateGeomFeatureDefn( wkbUnknown,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
}
CPLFree( panClassCount );
}
/* -------------------------------------------------------------------- */
/* Attach the layer definitions to each of the readers. */
/* -------------------------------------------------------------------- */
for( iModule = 0; iModule < nModules; iModule++ )
{
for( int iLayer = 0; iLayer < nLayers; iLayer++ )
{
papoModules[iModule]->AddFeatureDefn(
papoLayers[iLayer]->GetLayerDefn() );
}
}
return bSuccess;
}
int OGRS57DataSource::Open( const char * pszFilename )
{
pszName = CPLStrdup( pszFilename );
/* -------------------------------------------------------------------- */
/* Setup reader options. */
/* -------------------------------------------------------------------- */
char **papszReaderOptions = NULL;
if( GetOption(S57O_LNAM_REFS) == NULL )
papszReaderOptions = CSLSetNameValue( papszReaderOptions,
S57O_LNAM_REFS, "ON" );
else
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_LNAM_REFS,
GetOption(S57O_LNAM_REFS) );
if( GetOption(S57O_UPDATES) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_UPDATES,
GetOption(S57O_UPDATES));
if( GetOption(S57O_SPLIT_MULTIPOINT) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_SPLIT_MULTIPOINT,
GetOption(S57O_SPLIT_MULTIPOINT) );
if( GetOption(S57O_ADD_SOUNDG_DEPTH) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_ADD_SOUNDG_DEPTH,
GetOption(S57O_ADD_SOUNDG_DEPTH));
if( GetOption(S57O_PRESERVE_EMPTY_NUMBERS) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_PRESERVE_EMPTY_NUMBERS,
GetOption(S57O_PRESERVE_EMPTY_NUMBERS) );
if( GetOption(S57O_RETURN_PRIMITIVES) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_RETURN_PRIMITIVES,
GetOption(S57O_RETURN_PRIMITIVES) );
if( GetOption(S57O_RETURN_LINKAGES) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_RETURN_LINKAGES,
GetOption(S57O_RETURN_LINKAGES) );
if( GetOption(S57O_RETURN_DSID) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_RETURN_DSID,
GetOption(S57O_RETURN_DSID) );
if( GetOption(S57O_RECODE_BY_DSSI) != NULL )
papszReaderOptions =
CSLSetNameValue( papszReaderOptions, S57O_RECODE_BY_DSSI,
GetOption(S57O_RECODE_BY_DSSI) );
S57Reader *poModule = new S57Reader( pszFilename );
int bRet = poModule->SetOptions( papszReaderOptions );
CSLDestroy( papszReaderOptions );
if( !bRet )
{
delete poModule;
return FALSE;
}
/* -------------------------------------------------------------------- */
/* Try opening. */
/* */
/* Eventually this should check for catalogs, and if found */
/* instantiate a whole series of modules. */
/* -------------------------------------------------------------------- */
if( !poModule->Open( TRUE ) )
{
delete poModule;
return FALSE;
}
bool bSuccess = true;
nModules = 1;
papoModules = static_cast<S57Reader **>( CPLMalloc(sizeof(void*)) );
papoModules[0] = poModule;
/* -------------------------------------------------------------------- */
/* Add the header layers if they are called for. */
/* -------------------------------------------------------------------- */
if( GetOption( S57O_RETURN_DSID ) == NULL
|| CPLTestBool(GetOption( S57O_RETURN_DSID )) )
{
OGRFeatureDefn *poDefn = S57GenerateDSIDFeatureDefn();
AddLayer( new OGRS57Layer( this, poDefn ) );
}
/* -------------------------------------------------------------------- */
/* Add the primitive layers if they are called for. */
/* -------------------------------------------------------------------- */
if( GetOption( S57O_RETURN_PRIMITIVES ) != NULL )
{
OGRFeatureDefn *poDefn
= S57GenerateVectorPrimitiveFeatureDefn(
RCNM_VI, poModule->GetOptionFlags());
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateVectorPrimitiveFeatureDefn(
RCNM_VC, poModule->GetOptionFlags());
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateVectorPrimitiveFeatureDefn(
RCNM_VE, poModule->GetOptionFlags());
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateVectorPrimitiveFeatureDefn(
RCNM_VF, poModule->GetOptionFlags());
AddLayer( new OGRS57Layer( this, poDefn ) );
}
/* -------------------------------------------------------------------- */
/* Initialize a layer for each type of geometry. Eventually */
/* we will do this by object class. */
/* -------------------------------------------------------------------- */
if( OGRS57Driver::GetS57Registrar() == NULL )
{
OGRFeatureDefn *poDefn
= S57GenerateGeomFeatureDefn( wkbPoint,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateGeomFeatureDefn( wkbLineString,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateGeomFeatureDefn( wkbPolygon,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
poDefn = S57GenerateGeomFeatureDefn( wkbNone,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
}
/* -------------------------------------------------------------------- */
/* Initialize a feature definition for each class that actually */
/* occurs in the dataset. */
/* -------------------------------------------------------------------- */
else
{
poClassContentExplorer =
new S57ClassContentExplorer( OGRS57Driver::GetS57Registrar() );
for( int iModule = 0; iModule < nModules; iModule++ )
papoModules[iModule]->SetClassBased(
OGRS57Driver::GetS57Registrar(), poClassContentExplorer );
std::vector<int> anClassCount;
for( int iModule = 0; iModule < nModules; iModule++ )
{
bSuccess &= CPL_TO_BOOL(
papoModules[iModule]->CollectClassList(anClassCount) );
}
bool bGeneric = false;
for( unsigned int iClass = 0; iClass < anClassCount.size(); iClass++ )
{
if( anClassCount[iClass] > 0 )
{
OGRFeatureDefn *poDefn =
S57GenerateObjectClassDefn( OGRS57Driver::GetS57Registrar(),
poClassContentExplorer,
iClass,
poModule->GetOptionFlags() );
if( poDefn != NULL )
AddLayer( new OGRS57Layer( this, poDefn,
anClassCount[iClass] ) );
else
{
bGeneric = true;
CPLDebug( "S57",
"Unable to find definition for OBJL=%d\n",
iClass );
}
}
}
if( bGeneric )
{
OGRFeatureDefn *poDefn
= S57GenerateGeomFeatureDefn( wkbUnknown,
poModule->GetOptionFlags() );
AddLayer( new OGRS57Layer( this, poDefn ) );
}
}
/* -------------------------------------------------------------------- */
/* Attach the layer definitions to each of the readers. */
/* -------------------------------------------------------------------- */
for( int iModule = 0; iModule < nModules; iModule++ )
{
for( int iLayer = 0; iLayer < nLayers; iLayer++ )
{
papoModules[iModule]->AddFeatureDefn(
papoLayers[iLayer]->GetLayerDefn() );
}
}
return bSuccess;
}