parser/test/parse_yaml_test.cpp

/**
 *   Copyright (C) 2010, 2011, 2012 Object Modeling Designs
 *   consultomd.com
 *   Copyright (C) 2017 Zach Laine
 *
 *   Distributed under the Boost Software License, Version 1.0. (See accompanying
 *   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 */

#include "../yaml/parser/yaml.hpp"

#include <iostream>
#include <fstream>

#include <boost/spirit/include/classic_position_iterator.hpp>


///////////////////////////////////////////////////////////////////////////////
//  Main program
///////////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv)
{
    char const* filename = NULL;
    if (argc > 1)
    {
        filename = argv[1];
    }
    else
    {
        std::cerr << "Error: No input file provided." << std::endl;
        return 1;
    }

    std::ifstream in(filename, std::ios_base::in);

    if (!in)
    {
        std::cerr << "Error: Could not open input file: "
            << filename << std::endl;
        return 1;
    }

    // Ignore the BOM marking the beginning of a UTF-8 file in Windows
    char c = in.peek();
    if (c == '\xef')
    {
        char s[4];
        in >> s[0] >> s[1] >> s[2];
        s[3] = '\0';
        if (s != std::string("\xef\xbb\xbf"))
        {
            std::cerr << "Error: Unexpected characters from input file: "
                << filename << std::endl;
            return 1;
        }
    }

    using omd::yaml::ast::value_t;
    namespace qi = boost::spirit::qi;

    value_t result;
    if (omd::yaml::parser::parse_yaml(in, result, filename))
    {
        std::cout << "success: \n";

        // print the result (2-spaces indent with all aliases expanded)
        omd::yaml::ast::print_yaml<2, true>(std::cout, result);
        std::cout << std::endl;
    }
    else
    {
        std::cout << "parse error" << std::endl;
    }

    return 0;
}