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// -*- C++ -*-
/* main.cc
*
* Copyright (C) 2002 The libxml++ development team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <libxml++/libxml++.h>
#include <stdlib.h>
#include <iostream>
Glib::ustring result_type_to_ustring(xmlpp::XPathResultType result_type)
{
switch (result_type)
{
case xmlpp::XPATH_RESULT_NODESET: return "nodeset";
case xmlpp::XPATH_RESULT_BOOLEAN: return "boolean";
case xmlpp::XPATH_RESULT_NUMBER: return "number";
case xmlpp::XPATH_RESULT_STRING: return "string";
case xmlpp::XPATH_RESULT_UNDEFINED:
default:
return "undefined";
}
}
bool xpath_test(const xmlpp::Node* node, const Glib::ustring& xpath)
{
bool result = true;
std::cout << std::endl; //Separate tests by an empty line.
std::cout << "searching with xpath '" << xpath << "' in root node: " << std::endl;
try
{
auto set = node->find(xpath);
std::cout << set.size() << " nodes have been found:" << std::endl;
//Print the structural paths and the values:
for(const auto& child : set)
{
std::cout << " " << child->get_path();
auto attribute = dynamic_cast<xmlpp::Attribute*>(child);
if (attribute)
std::cout << ", value=\"" << attribute->get_value() << "\"";
auto content_node = dynamic_cast<xmlpp::ContentNode*>(child);
if (content_node)
std::cout << ", content=\"" << content_node->get_content() << "\"";
auto entity_reference = dynamic_cast<xmlpp::EntityReference*>(child);
if (entity_reference)
std::cout << ", text=\"" << entity_reference->get_original_text() << "\"";
auto element = dynamic_cast<xmlpp::Element*>(child);
if (element)
{
auto text_node = element->get_child_text();
if (text_node)
std::cout << ", child_text=\"" << text_node->get_content() << "\"";
}
std::cout << std::endl;
}
}
catch (const xmlpp::exception& ex)
{
std::cerr << "Exception caught from find: " << ex.what() << std::endl;
result = false;
}
try
{
xmlpp::XPathResultType result_type;
std::cout << "Boolean=" << (node->eval_to_boolean(xpath) ? "true" : "false")
<< ", Number=" << node->eval_to_number(xpath, &result_type)
<< ", String=\"" << node->eval_to_string(xpath) << "\"";
std::cout << ", Result_type=" << result_type_to_ustring(result_type) << std::endl;
}
catch (const xmlpp::exception& ex)
{
std::cerr << "Exception caught from eval: " << ex.what() << std::endl;
result = false;
}
return result;
}
int main(int argc, char* argv[])
{
// Set the global C++ locale to the user-configured locale,
// so we can use std::cout with UTF-8, via Glib::ustring, without exceptions.
std::locale::global(std::locale(""));
std::string filepath;
if (argc > 1)
filepath = argv[1]; //Allow the user to specify a different XML file to parse.
else
filepath = "example.xml";
bool result = true;
try
{
xmlpp::DomParser parser(filepath);
if(parser)
{
const auto root = parser.get_document()->get_root_node(); //deleted by DomParser.
if(root)
{
// Find all sections, no matter where:
result &= xpath_test(root, "//section");
// Find the title node (if there is one):
result &= xpath_test(root, "title");
// Find all literal text, in any paragraph:
result &= xpath_test(root, "//para/literal");
// Evaluate some XPath expressions with result types other than nodeset:
// These tests shall fail.
std::cerr << "Expecting 3 exceptions" << std::endl;
result &= !xpath_test(root, "boolean(//para/literal)");
result &= !xpath_test(root, "number(//para/literal)+2");
result &= !xpath_test(root, "concat(string(title),\" !\")");
// Don't find anything:
result &= xpath_test(root, "/wont_find");
std::cout << std::endl;
// And finally test whether intra-document links are well-formed.
// To be well-formed, the 'linkend' attribute must refer to
// an element in terms of its 'id'.
//
// Find out whether there are linkend attributes that don't have
// corresponding 'id's
std::cout << "searching for unresolved internal references "
<< "(see docbook manual):" << std::endl;
result &= xpath_test(root, "//@id");
result &= xpath_test(root, "//xref/@linkend");
}
}
}
catch(const std::exception& ex)
{
std::cerr << "Exception caught: " << ex.what() << std::endl;
result = false;
}
return result ? EXIT_SUCCESS : EXIT_FAILURE;
}
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