mame/3rdparty/pugixml/docs/samples/xpath_query.cpp
2016-06-25 19:54:44 +02:00

36 lines
1.2 KiB
C++

#include "pugixml.hpp"
#include <iostream>
#include <string>
int main()
{
pugi::xml_document doc;
if (!doc.load_file("xgconsole.xml")) return -1;
// tag::code[]
// Select nodes via compiled query
pugi::xpath_query query_remote_tools("/Profile/Tools/Tool[@AllowRemote='true']");
pugi::xpath_node_set tools = query_remote_tools.evaluate_node_set(doc);
std::cout << "Remote tool: ";
tools[2].node().print(std::cout);
// Evaluate numbers via compiled query
pugi::xpath_query query_timeouts("sum(//Tool/@Timeout)");
std::cout << query_timeouts.evaluate_number(doc) << std::endl;
// Evaluate strings via compiled query for different context nodes
pugi::xpath_query query_name_valid("string-length(substring-before(@Filename, '_')) > 0 and @OutputFileMasks");
pugi::xpath_query query_name("concat(substring-before(@Filename, '_'), ' produces ', @OutputFileMasks)");
for (pugi::xml_node tool = doc.first_element_by_path("Profile/Tools/Tool"); tool; tool = tool.next_sibling())
{
std::string s = query_name.evaluate_string(tool);
if (query_name_valid.evaluate_boolean(tool)) std::cout << s << std::endl;
}
// end::code[]
}
// vim:et