Method getContents

extras/catch_amalgamated.cpp:5182–5201

            std::FILE* getFile() { return m_file; }
            std::string getContents() {
                ReusableStringStream sstr;
                constexpr long buffer_size = 100;
                char buffer[buffer_size + 1] = {};
                long current_pos = ftell( m_file );
                CATCH_ENFORCE( current_pos >= 0,
                               "ftell failed, errno: " << errno );
                std::rewind( m_file );
                while ( current_pos > 0 ) {
                    auto read_characters =
                        std::fread( buffer,
                                    1,
                                    std::min( buffer_size, current_pos ),
                                    m_file );
                    buffer[read_characters] = '\0';
                    sstr << buffer;
                    current_pos -= static_cast<long>( read_characters );
                }
                return sstr.str();
            }

            void clear() { std::rewind( m_file ); }