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- // Copyright Antony Polukhin, 2013-2019.
- // Distributed under the Boost Software License, Version 1.0.
- // (See the accompanying file LICENSE_1_0.txt
- // or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
- #include <boost/lexical_cast.hpp>
- #include <string>
- #include <cstdio>
- #ifdef BOOST_MSVC
- # pragma warning(disable: 4996) // `strerror` is not safe
- #endif
- //[lexical_cast_log_errno
- //`The following example uses numeric data in a string expression:
- void log_message(const std::string &);
- void log_errno(int yoko)
- {
- log_message("Error " + boost::lexical_cast<std::string>(yoko) + ": " + strerror(yoko));
- }
- //] [/lexical_cast_log_errno]
- //[lexical_cast_fixed_buffer
- //`The following example converts some number and puts it to file:
- void number_to_file(int number, FILE* file)
- {
- typedef boost::array<char, 50> buf_t; // You can use std::array if your compiler supports it
- buf_t buffer = boost::lexical_cast<buf_t>(number); // No dynamic memory allocation
- std::fputs(buffer.begin(), file);
- }
- //] [/lexical_cast_fixed_buffer]
- //[lexical_cast_substring_conversion
- //`The following example takes part of the string and converts it to `int`:
- int convert_strings_part(const std::string& s, std::size_t pos, std::size_t n)
- {
- return boost::lexical_cast<int>(s.data() + pos, n);
- }
- //] [/lexical_cast_substring_conversion]
- void log_message(const std::string &) {}
- int main()
- {
- return 0;
- }
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