Chris@16: /*
Chris@101:  *          Copyright Andrey Semashev 2007 - 2015.
Chris@16:  * Distributed under the Boost Software License, Version 1.0.
Chris@16:  *    (See accompanying file LICENSE_1_0.txt or copy at
Chris@16:  *          http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  */
Chris@16: /*!
Chris@16:  * \file   snprintf.hpp
Chris@16:  * \author Andrey Semashev
Chris@16:  * \date   20.02.2009
Chris@16:  *
Chris@16:  * \brief  This header is the Boost.Log library implementation, see the library documentation
Chris@16:  *         at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_LOG_DETAIL_SNPRINTF_HPP_INCLUDED_
Chris@16: #define BOOST_LOG_DETAIL_SNPRINTF_HPP_INCLUDED_
Chris@16: 
Chris@16: #include <stdio.h>
Chris@16: #include <cstddef>
Chris@16: #include <cstdarg>
Chris@16: #include <boost/log/detail/config.hpp>
Chris@16: #ifdef BOOST_LOG_USE_WCHAR_T
Chris@16: #include <wchar.h>
Chris@16: #endif // BOOST_LOG_USE_WCHAR_T
Chris@16: #include <boost/log/detail/header.hpp>
Chris@16: 
Chris@16: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16: BOOST_LOG_OPEN_NAMESPACE
Chris@16: 
Chris@16: namespace aux {
Chris@16: 
Chris@16: #if !defined(_MSC_VER)
Chris@16: 
Chris@16: // Standard-conforming compilers already have the correct snprintfs
Chris@16: using ::snprintf;
Chris@16: using ::vsnprintf;
Chris@16: 
Chris@16: #   ifdef BOOST_LOG_USE_WCHAR_T
Chris@16: using ::swprintf;
Chris@16: using ::vswprintf;
Chris@16: #   endif // BOOST_LOG_USE_WCHAR_T
Chris@16: 
Chris@16: #else // !defined(_MSC_VER)
Chris@16: 
Chris@101: // MSVC snprintfs are not conforming but they are good enough for our cases
Chris@16: inline int vsnprintf(char* buf, std::size_t size, const char* format, std::va_list args)
Chris@16: {
Chris@101:     int n = _vsnprintf(buf, size, format, args);
Chris@101:     if (static_cast< unsigned int >(n) >= size)
Chris@101:     {
Chris@101:         n = static_cast< int >(size);
Chris@101:         buf[size - 1] = '\0';
Chris@101:     }
Chris@16:     return n;
Chris@16: }
Chris@16: 
Chris@101: #   ifdef BOOST_LOG_USE_WCHAR_T
Chris@16: inline int vswprintf(wchar_t* buf, std::size_t size, const wchar_t* format, std::va_list args)
Chris@16: {
Chris@101:     int n = _vsnwprintf(buf, size, format, args);
Chris@101:     if (static_cast< unsigned int >(n) >= size)
Chris@101:     {
Chris@101:         n = static_cast< int >(size);
Chris@101:         buf[size - 1] = L'\0';
Chris@101:     }
Chris@16:     return n;
Chris@16: }
Chris@101: #   endif // BOOST_LOG_USE_WCHAR_T
Chris@16: 
Chris@16: inline int snprintf(char* buf, std::size_t size, const char* format, ...)
Chris@16: {
Chris@16:     std::va_list args;
Chris@16:     va_start(args, format);
Chris@101:     int n = vsnprintf(buf, size, format, args);
Chris@16:     va_end(args);
Chris@16:     return n;
Chris@16: }
Chris@16: 
Chris@16: #   ifdef BOOST_LOG_USE_WCHAR_T
Chris@16: inline int swprintf(wchar_t* buf, std::size_t size, const wchar_t* format, ...)
Chris@16: {
Chris@16:     std::va_list args;
Chris@16:     va_start(args, format);
Chris@101:     int n = vswprintf(buf, size, format, args);
Chris@16:     va_end(args);
Chris@16:     return n;
Chris@16: }
Chris@16: #   endif // BOOST_LOG_USE_WCHAR_T
Chris@16: 
Chris@16: #endif // !defined(_MSC_VER)
Chris@16: 
Chris@16: } // namespace aux
Chris@16: 
Chris@16: BOOST_LOG_CLOSE_NAMESPACE // namespace log
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/log/detail/footer.hpp>
Chris@16: 
Chris@16: #endif // BOOST_LOG_DETAIL_SNPRINTF_HPP_INCLUDED_