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// Copyright (c) 2001-2010 Hartmut Kaiser
//
// 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)
///////////////////////////////////////////////////////////////////////////////
//
// A character classification example
//
// [ HK August 12, 2009 ] spirit2
//
///////////////////////////////////////////////////////////////////////////////
#include <boost/config/warning_disable.hpp>
#include <boost/spirit/include/qi.hpp>
#include <boost/spirit/include/karma.hpp>
#include <boost/spirit/include/phoenix_core.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>
#include <boost/fusion/include/std_pair.hpp>
#include <iostream>
#include <string>
#include <complex>
namespace client
{
///////////////////////////////////////////////////////////////////////////
// Our character classification generator
///////////////////////////////////////////////////////////////////////////
//[tutorial_karma_complex_number
template <typename OutputIterator>
bool classify_character(OutputIterator sink, char c)
{
using boost::spirit::ascii::char_;
using boost::spirit::ascii::digit;
using boost::spirit::ascii::xdigit;
using boost::spirit::ascii::alpha;
using boost::spirit::ascii::punct;
using boost::spirit::ascii::space;
using boost::spirit::ascii::cntrl;
using boost::spirit::karma::omit;
using boost::spirit::karma::generate;
if (!boost::spirit::char_encoding::ascii::isascii_(c))
return false;
return generate(sink,
// Begin grammar
(
"The character '" << char_ << "' is "
<< ( &digit << "a digit"
| &xdigit << "a xdigit"
| &alpha << "a alpha"
| &punct << "a punct"
| &space << "a space"
| &cntrl << "a cntrl"
| "of unknown type"
)
),
// End grammar
c, c
);
}
//]
}
///////////////////////////////////////////////////////////////////////////////
// Main program
///////////////////////////////////////////////////////////////////////////////
int main()
{
std::cout << "/////////////////////////////////////////////////////////\n\n";
std::cout << "\t\tA character classification micro generator for Spirit...\n\n";
std::cout << "/////////////////////////////////////////////////////////\n\n";
std::cout << "Give me a character to classify\n";
std::cout << "Type [q or Q] to quit\n\n";
std::string str;
while (getline(std::cin, str))
{
if (str.empty())
break;
std::string generated;
std::back_insert_iterator<std::string> sink(generated);
if (!client::classify_character(sink, str[0]))
{
std::cout << "-------------------------\n";
std::cout << "Generating failed\n";
std::cout << "-------------------------\n";
}
else
{
std::cout << generated << "\n";
}
}
std::cout << "Bye... :-) \n\n";
return 0;
}
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