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#include "pugixml.hpp"
#include <string.h>
#include <iostream>
//[code_include
bool load_preprocess(pugi::xml_document& doc, const char* path);
bool preprocess(pugi::xml_node node)
{
for (pugi::xml_node child = node.first_child(); child; )
{
if (child.type() == pugi::node_pi && strcmp(child.name(), "include") == 0)
{
pugi::xml_node include = child;
// load new preprocessed document (note: ideally this should handle relative paths)
const char* path = include.value();
pugi::xml_document doc;
if (!load_preprocess(doc, path)) return false;
// insert the comment marker above include directive
node.insert_child_before(pugi::node_comment, include).set_value(path);
// copy the document above the include directive (this retains the original order!)
for (pugi::xml_node ic = doc.first_child(); ic; ic = ic.next_sibling())
{
node.insert_copy_before(ic, include);
}
// remove the include node and move to the next child
child = child.next_sibling();
node.remove_child(include);
}
else
{
if (!preprocess(child)) return false;
child = child.next_sibling();
}
}
return true;
}
bool load_preprocess(pugi::xml_document& doc, const char* path)
{
pugi::xml_parse_result result = doc.load_file(path, pugi::parse_default | pugi::parse_pi); // for <?include?>
return result ? preprocess(doc) : false;
}
//]
int main()
{
pugi::xml_document doc;
if (!load_preprocess(doc, "character.xml")) return -1;
doc.print(std::cout);
}
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