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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)
// The main purpose of this example is to show the uniform and easy way of
// output formatting for different container types.
//
// Since the 'stream' primitive used below uses the streaming operator defined
// for the container value_type, you must make sure to have a corresponding
// operator<<() available for this contained data type. OTOH this means, that
// the format descriptions used below will be usable for any contained type as
// long as this type has an associated streaming operator defined.
// use a larger value for the alignment field width (default is 10)
#define BOOST_KARMA_DEFAULT_FIELD_LENGTH 25
#include <boost/config/warning_disable.hpp>
#include <iostream>
#include <string>
#include <vector>
#include <list>
#include <map>
#include <algorithm>
#include <cstdlib>
#include <boost/array.hpp>
#include <boost/date_time/gregorian/gregorian.hpp>
#include <boost/fusion/include/std_pair.hpp>
#include <boost/range/iterator_range.hpp>
///////////////////////////////////////////////////////////////////////////////
// This streaming operator is needed to generate the output from the map below
// Yes, it's heresy, but this operator has to live in namespace std to be
// picked up by the compiler.
namespace std {
inline std::ostream&
operator<<(std::ostream& os, std::pair<int const, std::string> v)
{
os << v.first << ": " << v.second;
return os;
}
}
#include <boost/spirit/include/karma.hpp>
#include <boost/spirit/include/karma_format.hpp>
using namespace boost::spirit;
using namespace boost::spirit::ascii;
///////////////////////////////////////////////////////////////////////////////
// Output the given containers in list format
// Note: the format description does not depend on the type of the sequence
// nor does it depend on the type of the elements contained in the
// sequence
///////////////////////////////////////////////////////////////////////////////
template <typename Container>
void output_container(std::ostream& os, Container const& c)
{
// output the container as a space separated sequence
os <<
karma::format(
*stream, // format description
c // data
) << std::endl << std::endl;
// output the container as a space separated sequence
os <<
karma::format_delimited(
*stream, // format description
space, // delimiter
c // data
) << std::endl << std::endl;
os <<
karma::format_delimited(
'[' << *stream << ']', // format description
space, // delimiter
c // data
) << std::endl << std::endl;
// output the container as a comma separated list
os <<
karma::format(
stream % ", ", // format description
c // data
) << std::endl << std::endl;
os <<
karma::format(
'[' << (stream % ", ") << ']', // format description
c // data
) << std::endl << std::endl;
os <<
karma::format(
'[' << -(stream % ", ") << ']', // format description
c // data
) << std::endl << std::endl;
os <<
karma::format(
'[' << (+stream | "empty") << ']', // format description
c // data
) << std::endl << std::endl;
// output the container as a comma separated list of items enclosed in '()'
os <<
karma::format(
('(' << stream << ')') % ", ", // format description
c // data
) << std::endl << std::endl;
os <<
karma::format(
'[' << (
('(' << stream << ')') % ", "
) << ']', // format description
c // data
) << std::endl << std::endl;
// output the container as a HTML list
os <<
karma::format_delimited(
"<ol>" <<
*verbatim["<li>" << stream << "</li>"]
<< "</ol>", // format description
'\n', // delimiter
c // data
) << std::endl;
// output the container as right aligned column
os <<
karma::format_delimited(
*verbatim[
"|" << right_align[stream] << "|"
], // format description
'\n', // delimiter
c // data
) << std::endl;
os << std::endl;
}
int main()
{
///////////////////////////////////////////////////////////////////////////
// C-style array
int i[4] = { 3, 6, 9, 12 };
std::cout << "-------------------------------------------------------------"
<< std::endl;
std::cout << "int i[]" << std::endl;
output_container(std::cout, boost::make_iterator_range(i, i+4));
///////////////////////////////////////////////////////////////////////////
// vector
std::vector<int> v (5);
std::generate(v.begin(), v.end(), std::rand); // randomly fill the vector
std::cout << "-------------------------------------------------------------"
<< std::endl;
std::cout << "std::vector<int>" << std::endl;
output_container(std::cout, v);
///////////////////////////////////////////////////////////////////////////
// list
std::list<char> l;
l.push_back('A');
l.push_back('B');
l.push_back('C');
std::cout << "-------------------------------------------------------------"
<< std::endl;
std::cout << "std::list<char>" << std::endl;
output_container(std::cout, l);
///////////////////////////////////////////////////////////////////////////
// strings
std::string str("Hello world!");
std::cout << "-------------------------------------------------------------"
<< std::endl;
std::cout << "std::string" << std::endl;
output_container(std::cout, str);
///////////////////////////////////////////////////////////////////////////
// boost::array
boost::array<long, 5> arr;
std::generate(arr.begin(), arr.end(), std::rand); // randomly fill the array
std::cout << "-------------------------------------------------------------"
<< std::endl;
std::cout << "boost::array<long, 5>" << std::endl;
output_container(std::cout, arr);
///////////////////////////////////////////////////////////////////////////
// vector of boost::date objects
// Note: any registered facets get used!
using namespace boost::gregorian;
std::vector<date> dates;
dates.push_back(date(2005, Jun, 25));
dates.push_back(date(2006, Jan, 13));
dates.push_back(date(2007, May, 03));
date_facet* facet(new date_facet("%A %B %d, %Y"));
std::cout.imbue(std::locale(std::cout.getloc(), facet));
std::cout << "-------------------------------------------------------------"
<< std::endl;
std::cout << "std::vector<boost::date>" << std::endl;
output_container(std::cout, dates);
///////////////////////////////////////////////////////////////////////////
// map of int --> string mappings
std::map<int, std::string> mappings;
mappings.insert(std::make_pair(0, "zero"));
mappings.insert(std::make_pair(1, "one"));
mappings.insert(std::make_pair(2, "two"));
std::cout << "-------------------------------------------------------------"
<< std::endl;
std::cout << "std::map<int, std::string>" << std::endl;
output_container(std::cout, mappings);
return 0;
}
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