EVOLUTION-MANAGER

Edit File: ogrs57driver.cpp

/******************************************************************************
 *
 * Project:  S-57 Translator
 * Purpose:  Implements OGRS57Driver
 * Author:   Frank Warmerdam, warmerdam@pobox.com
 *
 ******************************************************************************
 * Copyright (c) 1999, Frank Warmerdam
 * Copyright (c) 2013, Even Rouault <even dot rouault at mines-paris dot org>
 *
 * 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_multiproc.h"

CPL_CVSID("$Id: ogrs57driver.cpp 35542 2016-09-29 14:10:37Z goatbar $");

S57ClassRegistrar *OGRS57Driver::poRegistrar = NULL;
static CPLMutex* hS57RegistrarMutex = NULL;

/************************************************************************/
/*                            OGRS57Driver()                            */
/************************************************************************/

OGRS57Driver::OGRS57Driver() {}

/************************************************************************/
/*                           ~OGRS57Driver()                            */
/************************************************************************/

OGRS57Driver::~OGRS57Driver()

{
    if( poRegistrar != NULL )
    {
        delete poRegistrar;
        poRegistrar = NULL;
    }

if( hS57RegistrarMutex != NULL )
    {
        CPLDestroyMutex(hS57RegistrarMutex);
        hS57RegistrarMutex = NULL;
    }
}

/************************************************************************/
/*                          OGRS57DriverIdentify()                      */
/************************************************************************/

static int OGRS57DriverIdentify( GDALOpenInfo* poOpenInfo )

{
    if( poOpenInfo->nHeaderBytes < 10 )
        return false;
    const char* pachLeader = reinterpret_cast<char *>( poOpenInfo->pabyHeader );
    if( (pachLeader[5] != '1' && pachLeader[5] != '2'
                && pachLeader[5] != '3' )
            || pachLeader[6] != 'L'
            || (pachLeader[8] != '1' && pachLeader[8] != ' ') )
    {
        return false;
    }
    return strstr( pachLeader, "DSID") != NULL;
}

/************************************************************************/
/*                                Open()                                */
/************************************************************************/

GDALDataset *OGRS57Driver::Open( GDALOpenInfo* poOpenInfo )

{
    if( !OGRS57DriverIdentify(poOpenInfo) )
        return NULL;

OGRS57DataSource *poDS = new OGRS57DataSource(poOpenInfo->papszOpenOptions);
    if( !poDS->Open( poOpenInfo->pszFilename ) )
    {
        delete poDS;
        poDS = NULL;
    }

if( poDS && poOpenInfo->eAccess == GA_Update )
    {
        delete poDS;
        CPLError( CE_Failure, CPLE_OpenFailed,
                  "S57 Driver doesn't support update." );
        return NULL;
    }

return poDS;
}

/************************************************************************/
/*                              Create()                                */
/************************************************************************/

GDALDataset *OGRS57Driver::Create( const char * pszName,
                                   int /* nBands */,
                                   int /* nXSize */,
                                   int /* nYSize */,
                                   GDALDataType /* eDT */,
                                   char **papszOptions )
{
    OGRS57DataSource *poDS = new OGRS57DataSource();

if( poDS->Create( pszName, papszOptions ) )
        return poDS;

delete poDS;
    return NULL;
}

/************************************************************************/
/*                          GetS57Registrar()                           */
/************************************************************************/

S57ClassRegistrar *OGRS57Driver::GetS57Registrar()

{
/* -------------------------------------------------------------------- */
/*      Instantiate the class registrar if possible.                    */
/* -------------------------------------------------------------------- */
    CPLMutexHolderD(&hS57RegistrarMutex);

if( poRegistrar == NULL )
    {
        poRegistrar = new S57ClassRegistrar();

if( !poRegistrar->LoadInfo( NULL, NULL, false ) )
        {
            delete poRegistrar;
            poRegistrar = NULL;
        }
    }

return poRegistrar;
}

/************************************************************************/
/*                           RegisterOGRS57()                           */
/************************************************************************/

void RegisterOGRS57()

{
    if( GDALGetDriverByName( "S57" ) != NULL )
        return;

GDALDriver *poDriver = new OGRS57Driver();

poDriver->SetDescription( "S57" );
    poDriver->SetMetadataItem( GDAL_DCAP_VECTOR, "YES" );
    poDriver->SetMetadataItem( GDAL_DMD_LONGNAME, "IHO S-57 (ENC)" );
    poDriver->SetMetadataItem( GDAL_DMD_EXTENSION, "000" );
    poDriver->SetMetadataItem( GDAL_DMD_HELPTOPIC, "drv_s57.html" );

poDriver->SetMetadataItem(
        GDAL_DMD_OPENOPTIONLIST,
        "<OpenOptionList>"
        "  <Option name='" S57O_UPDATES "' type='string-select' description='Should update files be incorporated into the base data on the fly' default='APPLY'>"
        "    <Value>APPLY</Value>"
        "    <Value>IGNORE</Value>"
        "  </Option>"
        "  <Option name='" S57O_SPLIT_MULTIPOINT "' type='boolean' description='Should multipoint soundings be split into many single point sounding features' default='NO'/>"
        "  <Option name='" S57O_ADD_SOUNDG_DEPTH "' type='boolean' description='Should a DEPTH attribute be added on SOUNDG features and assign the depth of the sounding' default='NO'/>"
        "  <Option name='" S57O_RETURN_PRIMITIVES "' type='boolean' description='Should all the low level geometry primitives be returned as special IsolatedNode, ConnectedNode, Edge and Face layers' default='NO'/>"
        "  <Option name='" S57O_PRESERVE_EMPTY_NUMBERS "' type='boolean' description='If enabled, numeric attributes assigned an empty string as a value will be preserved as a special numeric value' default='NO'/>"
        "  <Option name='" S57O_LNAM_REFS "' type='boolean' description='Should LNAM and LNAM_REFS fields be attached to features capturing the feature to feature relationships in the FFPT group of the S-57 file' default='YES'/>"
        "  <Option name='" S57O_RETURN_LINKAGES "' type='boolean' description='Should additional attributes relating features to their underlying geometric primitives be attached' default='NO'/>"
        "  <Option name='" S57O_RECODE_BY_DSSI "' type='boolean' description='Should attribute values be recoded to UTF-8 from the character encoding specified in the S57 DSSI record.' default='NO'/>"
        "</OpenOptionList>");
    poDriver->SetMetadataItem(
        GDAL_DMD_CREATIONOPTIONLIST,
        "<CreationOptionList>"
        "   <Option name='S57_EXPP' type='int' description='Exchange purpose' default='1'/>"
        "   <Option name='S57_INTU' type='int' description='Intended usage' default='4'/>"
        "   <Option name='S57_EDTN' type='string' description='Edition number' default='2'/>"
        "   <Option name='S57_UPDN' type='string' description='Update number' default='0'/>"
        "   <Option name='S57_UADT' type='string' description='Update application date' default='20030801'/>"
        "   <Option name='S57_ISDT' type='string' description='Issue date' default='20030801'/>"
        "   <Option name='S57_STED' type='string' description='Edition number of S-57' default='03.1'/>"
        "   <Option name='S57_AGEN' type='int' description='Producing agency' default='540'/>"
        "   <Option name='S57_COMT' type='string' description='Comment' default=''/>"
        "   <Option name='S57_NOMR' type='int' description='Number of meta records (objects with acronym starting with \"M_\")' default='0'/>"
        "   <Option name='S57_NOGR' type='int' description='Number of geo records' default='0'/>"
        "   <Option name='S57_NOLR' type='int' description='Number of collection records' default='0'/>"
        "   <Option name='S57_NOIN' type='int' description='Number of isolated node records' default='0'/>"
        "   <Option name='S57_NOCN' type='int' description='Number of connected node records' default='0'/>"
        "   <Option name='S57_NOED' type='int' description='Number of edge records' default='0'/>"
        "   <Option name='S57_HDAT' type='int' description='Horizontal geodetic datum' default='2'/>"
        "   <Option name='S57_VDAT' type='int' description='Vertical datum' default='17'/>"
        "   <Option name='S57_SDAT' type='int' description='Sounding datum' default='23'/>"
        "   <Option name='S57_CSCL' type='int' description='Compilation scale of data (1:X)' default='52000'/>"
        "</CreationOptionList>" );

poDriver->SetMetadataItem( GDAL_DCAP_VIRTUALIO, "YES" );

poDriver->pfnOpen = OGRS57Driver::Open;
    poDriver->pfnIdentify = OGRS57DriverIdentify;
    poDriver->pfnCreate = OGRS57Driver::Create;

GetGDALDriverManager()->RegisterDriver( poDriver );
}