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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
commit483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch)
treee5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/boost/libs/spirit/example/karma/basic_facilities.cpp
parentInitial commit. (diff)
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Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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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/range.hpp>
+#include <boost/array.hpp>
+#include <boost/date_time/gregorian/gregorian.hpp>
+#include <boost/fusion/include/std_pair.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;
+}
+