Method append_buffer

Source/ThirdParty/pugixml/pugixml.cpp:5288–5323

	}

	PUGI__FN xml_parse_result xml_node::append_buffer(const void* contents, size_t size, unsigned int options, xml_encoding encoding)
	{
		// append_buffer is only valid for elements/documents
		if (!impl::allow_insert_child(type(), node_element)) return impl::make_parse_result(status_append_invalid_root);

		// get document node
		impl::xml_document_struct* doc = &impl::get_document(_root);

		// disable document_buffer_order optimization since in a document with multiple buffers comparing buffer pointers does not make sense
		doc->header |= impl::xml_memory_page_contents_shared_mask;
		
		// get extra buffer element (we'll store the document fragment buffer there so that we can deallocate it later)
		impl::xml_memory_page* page = 0;
		impl::xml_extra_buffer* extra = static_cast<impl::xml_extra_buffer*>(doc->allocate_memory(sizeof(impl::xml_extra_buffer), page));
		(void)page;

		if (!extra) return impl::make_parse_result(status_out_of_memory);

		// save name; name of the root has to be NULL before parsing - otherwise closing node mismatches will not be detected at the top level
		char_t* rootname = _root->name;
		_root->name = 0;

		// parse
		char_t* buffer = 0;
		xml_parse_result res = impl::load_buffer_impl(doc, _root, const_cast<void*>(contents), size, options, encoding, false, false, &buffer);

		// restore name
		_root->name = rootname;

		// add extra buffer to the list
		extra->buffer = buffer;
		extra->next = doc->extra_buffers;
		doc->extra_buffers = extra;

		return res;
	}

	PUGI__FN xml_node xml_node::find_child_by_attribute(const char_t* name_, const char_t* attr_name, const char_t* attr_value) const
	{