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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.
*/
#include <libxml++/libxml++.h>
#include <iostream>
#include <fstream>
#include <glibmm/convert.h>
#include <stdlib.h>
void print_node(const xmlpp::Node* node, unsigned int indentation = 0)
{
std::cout << std::endl; //Separate nodes by an empty line.
std::cout << "Node name = " << node->get_name() << std::endl;
//Recurse through child nodes:
for(const auto& child : node->get_children())
{
print_node(child, indentation + 2); //recursive
}
}
std::string read_from_disk(const std::string& filepath)
{
std::string result;
std::ifstream fStream(filepath.c_str());
if(fStream.is_open())
{
while(!(fStream.eof()))
{
auto chTemp = fStream.get();
if(!(fStream.eof()))
result += chTemp;
}
}
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";
try
{
xmlpp::DomParser parser;
parser.set_validate();
parser.set_substitute_entities(); //We just want the text to be resolved/unescaped automatically.
auto contents = read_from_disk(filepath);
std::string contents_ucs2;
try
{
contents_ucs2 = Glib::convert(contents, "UCS-2", "UTF-8");
}
catch(const Glib::Error& ex)
{
std::cerr << "Glib::convert failed: " << ex.what() << std::endl;
}
parser.parse_memory_raw((const unsigned char*)contents_ucs2.c_str(), contents_ucs2.size());
//Look at the first few bytes, to see whether it really looks like UCS2.
//Because UCS2 uses 2 bytes, we would expect every second byte to be zero for our simple example:
std::cout << "First 10 bytes of the UCS-2 data:" << std::endl;
for(std::string::size_type i = 0; (i < 10) && (i < contents_ucs2.size()); ++i)
{
std::cout << std::hex << (int)contents_ucs2[i] << ", ";
}
std::cout << std::endl;
if(parser)
{
//Walk the tree:
const auto pNode = parser.get_document()->get_root_node(); //deleted by DomParser.
print_node(pNode);
}
}
catch(const std::exception& ex)
{
std::cerr << "Exception caught: " << ex.what() << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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