C++ CPLPushErrorHandler函数代码示例

OGRErr OGRSQLiteSelectLayerCommonBehaviour::SetAttributeFilter( const char *pszQuery )

{
    char*& m_pszAttrQuertyString = poLayer->GetAttrQueryString();
    if( m_pszAttrQuertyString == NULL && pszQuery == NULL )
        return OGRERR_NONE;

    CPLFree(m_pszAttrQuertyString);
    m_pszAttrQuertyString = (pszQuery) ? CPLStrdup(pszQuery) : NULL;

    bAllowResetReadingEvenIfIndexAtZero = TRUE;

    OGRFeatureQuery oQuery;

    CPLPushErrorHandler(CPLQuietErrorHandler);
    int bHasSpecialFields = (pszQuery != NULL && pszQuery[0] != '\0' &&
        oQuery.Compile( poLayer->GetLayerDefn(), pszQuery ) == OGRERR_NONE &&
        HasSpecialFields((swq_expr_node*)oQuery.GetSWQExpr(), poLayer->GetLayerDefn()->GetFieldCount()) );
    CPLPopErrorHandler();

    if( bHasSpecialFields || !BuildSQL() )
    {
        return poLayer->BaseSetAttributeFilter(pszQuery);
    }

    ResetReading();

    return OGRERR_NONE;
}

Debug::Debug(bool isDebug, pdal::LogPtr log)
    : m_isDebug(isDebug)
    , m_log(log)
{
    if (m_isDebug)
    {
        const char* gdal_debug = ::pdal::Utils::getenv("CPL_DEBUG");
        if (gdal_debug == 0)
        {
            pdal::Utils::putenv("CPL_DEBUG=ON");
        }
        m_gdal_callback = boost::bind(&Debug::log, this, _1, _2, _3);
    }
    else
    {
        m_gdal_callback = boost::bind(&Debug::error, this, _1, _2, _3);
    }


#if ((GDAL_VERSION_MAJOR == 1 && GDAL_VERSION_MINOR >= 9) || (GDAL_VERSION_MAJOR > 1)) 
    CPLPushErrorHandlerEx(&Debug::trampoline, this);
#else
    CPLPushErrorHandler(&Debug::trampoline);
#endif
}

int IMapInfoFile::TestUtf8Capability() const
{
    const char* pszEncoding( GetEncoding() );
    if( strlen( pszEncoding ) == 0 )
    {
        return FALSE;
    }

    CPLClearRecodeWarningFlags();
    CPLErrorReset();

    CPLPushErrorHandler(CPLQuietErrorHandler);
    char* pszTest( CPLRecode( "test", GetEncoding(), CPL_ENC_UTF8 ) );
    CPLPopErrorHandler();

    if( pszTest == nullptr )
    {
        return FALSE;
    }

    CPLFree( pszTest );

    if( CPLGetLastErrorType() != 0 )
    {
        return FALSE;
    }

    return TRUE;
}

OGRFieldType GeoJSONStringPropertyToFieldType( json_object* poObject )
{
    if (poObject == NULL) {
        return OFTString;
    }
    const char* pszStr = json_object_get_string( poObject );

    OGRField sWrkField;
    CPLPushErrorHandler(CPLQuietErrorHandler);
    int bSuccess = OGRParseDate( pszStr, &sWrkField, 0 );
    CPLPopErrorHandler();
    CPLErrorReset();
    if( bSuccess )
    {
        int bHasDate = strchr( pszStr, '/' ) != NULL ||
                       strchr( pszStr, '-' ) != NULL;
        int bHasTime = strchr( pszStr, ':' ) != NULL;
        if( bHasDate && bHasTime )
            return OFTDateTime;
        else if( bHasDate )
            return OFTDate;
        else
            return OFTTime;
    }
    return OFTString;
}

OGRFeature * OGRGFTTableLayer::GetFeature( GIntBig nFID )
{
    GetLayerDefn();

    CPLString osSQL("SELECT ROWID");
    for(int i=0;i<poFeatureDefn->GetFieldCount();i++)
    {
        osSQL += ",";

        const char* pszFieldName =
            poFeatureDefn->GetFieldDefn(i)->GetNameRef();
        osSQL += EscapeAndQuote(pszFieldName);
    }
    if (bHiddenGeometryField)
    {
        osSQL += ",";
        osSQL += EscapeAndQuote(GetGeometryColumn());
    }
    osSQL += " FROM ";
    osSQL += osTableId;
    osSQL += CPLSPrintf(" WHERE ROWID='" CPL_FRMT_GIB "'", nFID);

    CPLPushErrorHandler(CPLQuietErrorHandler);
    CPLHTTPResult * psResult = poDS->RunSQL(osSQL);
    CPLPopErrorHandler();

    if (psResult == NULL)
        return NULL;

    char* pszLine = (char*) psResult->pabyData;
    if (pszLine == NULL || psResult->pszErrBuf != NULL)
    {
        CPLHTTPDestroyResult(psResult);
        return NULL;
    }

    /* skip header line */
    pszLine = OGRGFTGotoNextLine(pszLine);
    if (pszLine == NULL || pszLine[0] == 0)
    {
        CPLHTTPDestroyResult(psResult);
        return NULL;
    }

    int nLen = (int)strlen(pszLine);
    if (nLen > 0 && pszLine[nLen-1] == '\n')
        pszLine[nLen-1] = '\0';

    OGRFeature* poFeature = BuildFeatureFromSQL(pszLine);

    CPLHTTPDestroyResult(psResult);

    return poFeature;
}

 void object::test<2>()
 {
     if( GDALHasTriangulation() )
     {
         double adfX[] = { 0, 1, 2, 3 };
         double adfY[] = { 0, 1, 2, 3 };
         CPLPushErrorHandler(CPLQuietErrorHandler);
         psDT = GDALTriangulationCreateDelaunay(4, adfX, adfY);
         CPLPopErrorHandler();
         ensure(psDT == nullptr);
     }
 }

 void object::test<1>()
 {
     if( GDALHasTriangulation() )
     {
         double adfX[] = { 0, -5, -5, 5, 5 };
         double adfY[] = { 0, -5, 5, -5, 5 };
         CPLPushErrorHandler(CPLQuietErrorHandler);
         psDT = GDALTriangulationCreateDelaunay(2, adfX, adfY);
         CPLPopErrorHandler();
         ensure(psDT == NULL);
     }
 }

int main( int argc, char **argv )
{
  QCoreApplication app( argc, argv );

  const QStringList args = QCoreApplication::arguments();

  bool verbose = false;

  for ( const QString &arg : args )
  {
    if ( arg == QLatin1String( "--verbose" ) )
      verbose = true;
  }

  QgsApplication::init();

  if ( !QgsApplication::isRunningFromBuildDir() )
  {
    char *prefixPath = getenv( "QGIS_PREFIX_PATH" );
    QgsApplication::setPrefixPath( prefixPath ? prefixPath : CMAKE_INSTALL_PREFIX, TRUE );
  }

  if ( verbose )
    std::cout << "Synchronizing CRS database with GDAL/PROJ definitions." << std::endl;

  CPLPushErrorHandler( showError );

  int res = QgsCoordinateReferenceSystem::syncDatabase();

  CPLPopErrorHandler();

  if ( res == 0 && verbose )
  {
    std::cout << "No CRS updates were necessary." << std::endl;
  }
  else if ( res > 0 && verbose )
  {
    std::cout << res << " CRSs updated." << std::endl;
  }
  else if ( res == std::numeric_limits<int>::min() )
  {
    std::cout << "CRSs synchronization not possible." << std::endl;
  }
  else if ( res < 0 )
  {
    std::cout << -res << " CRSs could not be updated." << std::endl;
  }

  QgsApplication::exitQgis();

  return 0;
}

GDALDatasetH gv_manager_get_dataset( GvManager *manager, const char * filename)

{
    int       i;
    GvDataset *ds;
    GDALDatasetH dataset;

    /*
     * Check for dataset in existing list of open files.  Note that our
     * filename check does not account for different possible names for
     * one dataset.
     */
    for( i = 0; i < manager->datasets->len; i++ )
    {
        ds = (GvDataset *) g_ptr_array_index(manager->datasets, i);

        if( EQUAL(GDALGetDescription(ds->dataset),filename) )
        {
            return ds->dataset;
        }
    }

    /*
     * Try to open the dataset, preferably with update access.  We don't
     * want to report update access errors so we supress error reporting
     * temporarily. 
     */
    
    CPLErrorReset();
    CPLPushErrorHandler( CPLQuietErrorHandler );
    dataset = GDALOpen( filename, GA_Update );
    CPLPopErrorHandler();

    if( dataset == NULL )
    {
        dataset = GDALOpen( filename, GA_ReadOnly );
    }

    if( dataset == NULL )
        return NULL;

    /* 
     * Add the dataset to the list of managed datasets. 
     */
    ds = g_new(GvDataset,1);
    ds->dataset = dataset;
    ds->rasters = g_new0(GvRaster *, GDALGetRasterCount(dataset));
    
    g_ptr_array_add( manager->datasets, ds );

    return dataset;
}

static OGRLayer* GetLayerAndOverwriteIfNecessary(GDALDataset *poDstDS,
                                                 const char* pszNewLayerName,
                                                 int bOverwrite,
                                                 int* pbErrorOccured)
{
    if( pbErrorOccured )
        *pbErrorOccured = FALSE;

    /* GetLayerByName() can instanciate layers that would have been */
    /* 'hidden' otherwise, for example, non-spatial tables in a */
    /* Postgis-enabled database, so this apparently useless command is */
    /* not useless... (#4012) */
    CPLPushErrorHandler(CPLQuietErrorHandler);
    OGRLayer* poDstLayer = poDstDS->GetLayerByName(pszNewLayerName);
    CPLPopErrorHandler();
    CPLErrorReset();

    int iLayer = -1;
    if (poDstLayer != NULL)
    {
        int nLayerCount = poDstDS->GetLayerCount();
        for( iLayer = 0; iLayer < nLayerCount; iLayer++ )
        {
            OGRLayer        *poLayer = poDstDS->GetLayer(iLayer);
            if (poLayer == poDstLayer)
                break;
        }

        if (iLayer == nLayerCount)
            /* shouldn't happen with an ideal driver */
            poDstLayer = NULL;
    }

/* -------------------------------------------------------------------- */
/*      If the user requested overwrite, and we have the layer in       */
/*      question we need to delete it now so it will get recreated      */
/*      (overwritten).                                                  */
/* -------------------------------------------------------------------- */
    if( poDstLayer != NULL && bOverwrite )
    {
        if( poDstDS->DeleteLayer( iLayer ) != OGRERR_NONE )
        {
            fprintf( stderr,
                     "DeleteLayer() failed when overwrite requested.\n" );
            if( pbErrorOccured )
                *pbErrorOccured = TRUE;
        }
        poDstLayer = NULL;
    }

    return poDstLayer;
}

void msGDALInitialize( void )

{
  if( !bGDALInitialized ) {
    msAcquireLock( TLOCK_GDAL );

    GDALAllRegister();
    CPLPushErrorHandler( CPLQuietErrorHandler );
    msReleaseLock( TLOCK_GDAL );

    bGDALInitialized = 1;
  }
}

SEXP
RGDAL_OpenDataset(SEXP filename, SEXP read_only, SEXP silent) {

  const char *fn = asString(filename);

  GDALAccess RWFlag;

  if (asLogical(read_only))
    RWFlag = GA_ReadOnly;
  else
    RWFlag = GA_Update;

/* Modification suggested by Even Rouault, 2009-08-08: */

  CPLErrorReset();
  if (asLogical(silent))
    CPLPushErrorHandler(CPLQuietErrorHandler);
  else
     installErrorHandler();

  GDALDataset *pDataset = (GDALDataset *) GDALOpen(fn, RWFlag);

  if (pDataset == NULL)
    error("%s\n", CPLGetLastErrorMsg());

  if (asLogical(silent))
    CPLPopErrorHandler();
  else
    uninstallErrorHandlerAndTriggerError();

/* Similarly to SWIG bindings, the following lines will cause
RGDAL_OpenDataset() to fail on - uncleared - errors even if pDataset is not
NULL. They could also be just removed. While pDataset != NULL, there's some
hope ;-) */

/*  CPLErr eclass = CPLGetLastErrorType();

  if (pDataset != NULL && eclass == CE_Failure) {
    GDALClose(pDataset);
    pDataset = NULL;
    __errorHandler(eclass, CPLGetLastErrorNo(), CPLGetLastErrorMsg());
  }*/


  SEXP sxpHandle = R_MakeExternalPtr((void *) pDataset,
				     mkChar("GDAL Dataset"),
				     R_NilValue);

  return(sxpHandle);

}

int OGRGFTResultLayer::FetchNextRows()
{
    if (!EQUALN(osSQL.c_str(), "SELECT", 6))
        return FALSE;

    aosRows.resize(0);

    CPLString osChangedSQL(osSQL);
    if (osSQL.ifind(" OFFSET ") == std::string::npos &&
        osSQL.ifind(" LIMIT ") == std::string::npos)
    {
        osChangedSQL += CPLSPrintf(" OFFSET %d LIMIT %d",
                                   nOffset, GetFeaturesToFetch());
    }

    CPLPushErrorHandler(CPLQuietErrorHandler);
    CPLHTTPResult * psResult = poDS->RunSQL(osChangedSQL);
    CPLPopErrorHandler();

    if (psResult == NULL)
    {
        bEOF = TRUE;
        return FALSE;
    }

    char* pszLine = (char*) psResult->pabyData;
    if (pszLine == NULL ||
        psResult->pszErrBuf != NULL)
    {
        CPLError(CE_Failure, CPLE_AppDefined, "RunSQL() failed");
        CPLHTTPDestroyResult(psResult);
        bEOF = TRUE;
        return FALSE;
    }

    pszLine = OGRGFTGotoNextLine(pszLine);
    if (pszLine == NULL)
    {
        CPLHTTPDestroyResult(psResult);
        bEOF = TRUE;
        return FALSE;
    }

    ParseCSVResponse(pszLine, aosRows);

    CPLHTTPDestroyResult(psResult);

    bEOF = (int)aosRows.size() < GetFeaturesToFetch();

    return TRUE;
}

OGRLayer* OGRPLScenesDataset::ExecuteSQL( const char *pszSQLCommand,
                                          OGRGeometry *poSpatialFilter,
                                          const char *pszDialect )
{
    if( EQUALN(pszSQLCommand, "SELECT ", strlen("SELECT ")) )
    {
        swq_select oSelect;
        CPLString osSQLCommand(pszSQLCommand);
        size_t nLimitPos = osSQLCommand.ifind(" limit ");
        if( nLimitPos != std::string::npos )
            osSQLCommand.resize(nLimitPos);

        CPLPushErrorHandler(CPLQuietErrorHandler);
        OGRErr eErr = oSelect.preparse(osSQLCommand);
        CPLPopErrorHandler();
        if( eErr != OGRERR_NONE )
            return GDALDataset::ExecuteSQL(pszSQLCommand, poSpatialFilter, pszDialect);

/* -------------------------------------------------------------------- */
/*      ORDER BY optimization on acquired field                         */
/* -------------------------------------------------------------------- */
        if( oSelect.join_count == 0 && oSelect.poOtherSelect == NULL &&
            oSelect.table_count == 1 && oSelect.order_specs == 1 &&
            strcmp(oSelect.order_defs[0].field_name, "acquired") == 0 )
        {
            int idx;
            OGRPLScenesLayer* poLayer = NULL;
            for(idx = 0; idx < nLayers; idx ++ )
            {
                if( strcmp( papoLayers[idx]->GetName(),
                            oSelect.table_defs[0].table_name) == 0 )
                {
                    poLayer = papoLayers[idx];
                    break;
                }
            }
            if( poLayer != NULL )
            {
                poLayer->SetAcquiredOrderingFlag(
                                        oSelect.order_defs[0].ascending_flag);
                OGRLayer* poRet = GDALDataset::ExecuteSQL(pszSQLCommand, poSpatialFilter, pszDialect);
                if( poRet )
                    oMapResultSetToSourceLayer[poRet] = poLayer;
                return poRet;
            }
        }
    }
    return GDALDataset::ExecuteSQL(pszSQLCommand, poSpatialFilter, pszDialect);
}

static
void OGR2SQLITE_ST_Area(sqlite3_context* pContext,
                        int argc, sqlite3_value** argv)
{
    OGRGeometry* poGeom = OGR2SQLITE_GetGeom(pContext, argc, argv, NULL);
    if( poGeom != NULL )
    {
        CPLPushErrorHandler(CPLQuietErrorHandler);
        sqlite3_result_double( pContext, OGR_G_Area((OGRGeometryH)poGeom) );
        CPLPopErrorHandler();
    }
    else
        sqlite3_result_null(pContext);
    delete poGeom;
}