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f44479bcd3
It is better to manage warnings on our side to know what warnings we need to fix or suppress, and the only thing that header does is disabling deprecation warnings on MSVC and ICC which we would prefer to not show to users.
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
// Copyright (c) 2001-2010 Hartmut Kaiser
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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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// The purpose of this example is to show how any character sequence can be
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// printed while being properly quoted.
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#include <boost/spirit/include/karma.hpp>
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namespace client
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{
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namespace karma = boost::spirit::karma;
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template <typename OutputIterator>
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struct escaped_string
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: karma::grammar<OutputIterator, std::string(char const*)>
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{
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escaped_string()
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: escaped_string::base_type(esc_str)
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{
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esc_char.add('\a', "\\a")('\b', "\\b")('\f', "\\f")('\n', "\\n")
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('\r', "\\r")('\t', "\\t")('\v', "\\v")('\\', "\\\\")
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('\'', "\\\'")('\"', "\\\"")
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;
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esc_str = karma::lit(karma::_r1)
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<< *(esc_char | karma::print | "\\x" << karma::hex)
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<< karma::lit(karma::_r1)
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;
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}
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karma::rule<OutputIterator, std::string(char const*)> esc_str;
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karma::symbols<char, char const*> esc_char;
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};
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}
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///////////////////////////////////////////////////////////////////////////////
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int main()
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{
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namespace karma = boost::spirit::karma;
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typedef std::back_insert_iterator<std::string> sink_type;
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std::string generated;
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sink_type sink(generated);
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std::string str("string to escape: \n\r\t\"'\x19");
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char const* quote = "'''";
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client::escaped_string<sink_type> g;
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if (!karma::generate(sink, g(quote), str))
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{
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std::cout << "-------------------------\n";
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std::cout << "Generating failed\n";
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std::cout << "-------------------------\n";
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}
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else
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{
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std::cout << "-------------------------\n";
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std::cout << "Generated: " << generated << "\n";
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std::cout << "-------------------------\n";
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}
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return 0;
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}
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