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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
commit | 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch) | |
tree | e5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/boost/libs/spirit/example/karma/basic_facilities.cpp | |
parent | Initial commit. (diff) | |
download | ceph-upstream.tar.xz ceph-upstream.zip |
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/spirit/example/karma/basic_facilities.cpp')
-rw-r--r-- | src/boost/libs/spirit/example/karma/basic_facilities.cpp | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/boost/libs/spirit/example/karma/basic_facilities.cpp b/src/boost/libs/spirit/example/karma/basic_facilities.cpp new file mode 100644 index 00000000..63514032 --- /dev/null +++ b/src/boost/libs/spirit/example/karma/basic_facilities.cpp @@ -0,0 +1,229 @@ +// 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; +} + |