function str = cellstr2str(c)
  
  if ~isempty(c)
    
    str = '{';
    
    if ~iscellstr(c)
      error('### The input cell must be a cell of strings. [%s]', utils.helper.val2str(c));
    end
    
    for cc = 1:size(c,1)
      
      str = [str, '''', maskQuote(c{cc, 1}), ''''];
      for rr = 2:size(c,2)
        str = [str, ', ''', maskQuote(c{cc, rr}), '''' ];
      end
      
      str = [str '; '];
    end
    
    str = [str(1:end-2), '}'];
    
  else
    str = sprintf('cell(%d,%d)', size(c));
  end
  
end

function str = maskQuote(str)
  str = strrep(str, '''', '''''');
end