void resize( size_t rows, size_t cols ) {
flut_error_if( rows < row_size() || cols < column_size(), "tables cannot be shrinked" );
// reorganize existing data
data_.resize( row_size() * cols );
for ( index_t ri = rows; ri-- > 0; )
for ( index_t ci = cols; ci-- > 0; )
data_[ cols * ri + ci ] = ( ri < row_size() && ci < column_size() ) ? data_[ column_size() * ri + ci ] : T();
col_labels_.resize( cols );
row_labels_.resize( rows );
}
string load_string( const string& filename )
{
#if 0
// read file contents into char array
FILE* f = fopen( filename.c_str(), "rb" );
flut_error_if( f == NULL, "Could not open " + quoted( filename ) );
fseek( f, 0, SEEK_END );
int file_len = ftell( f );
rewind( f );
string s( file_len, '\0' );
fread( reinterpret_cast< void* >( &s[ 0 ] ), sizeof( char ), file_len, f );
return s;
#else
// this method uses a stringbuf, which may be slower but more stable
std::ifstream ifstr( filename );
std::stringstream buf;
buf << ifstr.rdbuf();
return buf.str();
#endif
}
// get create func
create_func_t& operator()( const string& type ) {
auto it = factory_functions.find( type );
flut_error_if( it == factory_functions.end(), "Unregistered type: " + type );
return it->second;
}
