exists_HDF5_element

C++ Function Reference

1 Signature

bool BigDataStatMeth::exists_HDF5_element(H5::H5File *file, std::string element)

2 Description

Checks if an HDF5 element (group or dataset) exists.

3 Parameters

  • file (H5::H5File *): Pointer to HDF5 file
  • element (std::string): Path to the element to check

4 Returns

bool True if element exists, false otherwise

5 Details

filePointer to HDF5 file elementPath to the element to check bool True if element exists, false otherwiseH5::FileIExceptionon file operation errorsHandles trailing slashes in group paths

6 Call Graph

Function dependencies

7 Source Code

File: inst/include/hdf5Utilities/hdf5Utilities.hpp • Lines 68-95

inline bool exists_HDF5_element(H5::H5File* file, std::string element)
    {
        bool bexists = false;
        try
        {
            // H5::Exception::dontPrint();
         
             if( element.substr(element.length(), element.length()) == "/" ) {
                 element = element.substr( 0, element.length()-1);
             } 
             
            // Search dataset
            if(pathExists( file->getId(), element)) 
                bexists = true;
            
        } catch(H5::FileIException& error) { // catch failure caused by the H5File operations
            file->close();
            Rcpp::Rcerr<<"c++ exception exists_HDF5_element (File IException)" << std::endl;
            return bexists;
        } catch(std::exception &ex) {
            Rcpp::Rcerr << "c++ exception exists_HDF5_element: " << ex.what();
            return(bexists);
        }  catch (...) {
            Rcpp::Rcerr<<"\nC++ exception exists_HDF5_element (unknown reason)";
            return(bexists);
        }   
        return bexists;
    }

8 Usage Example

#include "BigDataStatMeth.hpp"

// Example usage
auto result = exists_HDF5_element(...);