mirror of
https://github.com/boostorg/parser.git
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102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
/**
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* Copyright (C) 2010, 2011, 2012 Object Modeling Designs
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* consultomd.com
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* Copyright (C) 2017 Zach Laine
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*
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* Distributed under the Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <yaml/parser/yaml.hpp>
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#include <iostream>
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#include <fstream>
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///////////////////////////////////////////////////////////////////////////////
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// Main program
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///////////////////////////////////////////////////////////////////////////////
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int main(int argc, char **argv)
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{
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char const* filename = NULL;
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if (argc > 1)
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{
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filename = argv[1];
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}
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else
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{
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std::cerr << "Error: No input file provided." << std::endl;
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return 1;
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}
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std::ifstream in(filename, std::ios_base::in);
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if (!in)
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{
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std::cerr << "Error: Could not open input file: "
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<< filename << std::endl;
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return 1;
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}
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// Ignore the BOM marking the beginning of a UTF-8 file in Windows
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char c = in.peek();
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if (c == '\xef')
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{
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char s[4];
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in >> s[0] >> s[1] >> s[2];
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s[3] = '\0';
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if (s != std::string("\xef\xbb\xbf"))
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{
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std::cerr << "Error: Unexpected characters from input file: "
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<< filename << std::endl;
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return 1;
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}
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}
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using omd::yaml::ast::value_t;
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using omd::yaml::parser::parse_yaml;
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using omd::yaml::ast::print_yaml;
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value_t result;
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if (parse_yaml(in, result, filename))
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{
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print_yaml(std::cout, result);
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std::cout << std::endl;
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{
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std::stringstream expanded_once;
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omd::yaml::ast::print_yaml<3, true>(expanded_once, result);
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value_t reparsed_once_result;
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if (!parse_yaml(expanded_once, reparsed_once_result, filename + std::string("_expanded_once_string"))) {
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std::cout << "error: reparse of expanded_once string failed!" << std::endl;
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} else {
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std::stringstream expanded_twice;
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omd::yaml::ast::print_yaml<3, true>(expanded_twice, result);
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value_t reparsed_twice_result;
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if (!parse_yaml(expanded_twice, reparsed_twice_result, filename + std::string("_expanded_twice_string"))) {
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std::cout << "error: reparse of expanded_twice string failed!" << std::endl;
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} else if (reparsed_twice_result != reparsed_once_result) {
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std::cout << "error: in parse -> print and expand -> parse -> print and expand -> parse, the final parse differs from middle parse!" << std::endl;
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}
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}
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}
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{
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std::stringstream unexpanded;
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omd::yaml::ast::print_yaml(unexpanded, result);
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value_t reparsed_result;
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if (!parse_yaml(unexpanded, reparsed_result, filename + std::string("_unexpanded_string"))) {
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std::cout << "error: reparse of unexpanded string failed!" << std::endl;
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} else if (reparsed_result != result) {
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std::cout << "error: result of parse -> print and don't expand -> parse differs from initial parse!" << std::endl;
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}
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}
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}
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else
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{
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std::cout << "error: parse of original file failed!" << std::endl;
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}
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return 0;
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}
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