I use the rapidxml library to read/parse the content from a xml file, make some changes in the dom's content and then save the dom to the file again.
When I save the contents of the xml_document to the file, the elements which contain an empty string are saved as <empty_tag/> but instead I want them to be saved as <empty_tag><empty_tag/>. I it possible to change this with rapidxml?
The flow is something like:
//read the xml content
rapidxml::xml_document<> dom;
std::ifstream i_xmlfile('path');
std::vector<char> xml_content = std::vector<char>(std::istreambuf_iterator<
char>(i_xmlfile), std::istreambuf_iterator<char>());
xml_content.push_back('\0');
dom.parse<0 | rapidxml::parse_no_data_nodes> (&xml_content[0]);
... process nodes here ...
//save the xml content
std::ofstream o_xmlfile;
o_xmlfile.open('path');
o_xmlfile << dom;
After a more thoughtful search in the library code I conclude that it is not possible to change this format only if you edit the library.
So, in order to make it work, I changed some lines in file rapidxml_print.hpp for method print_element_node() (lines 283 in rapidxml version 1.13):
// Print childless node tag ending
*out = Ch('/'), ++out;
*out = Ch('>'), ++out;
changed with:
*out = Ch('>'), ++out;
// Print node end
*out = Ch('<'), ++out;
*out = Ch('/'), ++out;
out = copy_chars(node->name(), node->name() + node->name_size(), out);
*out = Ch('>'), ++out;