projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /* |
| 2 | * Copyright Andrey Semashev 2007 - 2015. | |
| 3 | * Distributed under the Boost Software License, Version 1.0. | |
| 4 | * (See accompanying file LICENSE_1_0.txt or copy at | |
| 5 | * http://www.boost.org/LICENSE_1_0.txt) | |
| 6 | */ | |
| 7 | /*! | |
| 8 | * \file snprintf.hpp | |
| 9 | * \author Andrey Semashev | |
| 10 | * \date 20.02.2009 | |
| 11 | * | |
| 12 | * \brief This header is the Boost.Log library implementation, see the library documentation | |
| 13 | * at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html. | |
| 14 | */ | |
| 15 | ||
| 16 | #ifndef BOOST_LOG_DETAIL_SNPRINTF_HPP_INCLUDED_ | |
| 17 | #define BOOST_LOG_DETAIL_SNPRINTF_HPP_INCLUDED_ | |
| 18 | ||
| 19 | #include <stdio.h> | |
| 20 | #include <cstddef> | |
| 21 | #include <cstdarg> | |
| 22 | #include <boost/log/detail/config.hpp> | |
| 23 | #ifdef BOOST_LOG_USE_WCHAR_T | |
| 24 | #include <wchar.h> | |
| 25 | #endif // BOOST_LOG_USE_WCHAR_T | |
| 26 | #include <boost/log/detail/header.hpp> | |
| 27 | ||
| 28 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
| 29 | #pragma once | |
| 30 | #endif | |
| 31 | ||
| 32 | namespace boost { | |
| 33 | ||
| 34 | BOOST_LOG_OPEN_NAMESPACE | |
| 35 | ||
| 36 | namespace aux { | |
| 37 | ||
| 38 | #if defined(_MSC_VER) || (defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)) | |
| 39 | ||
| 40 | // MSVC snprintfs are not conforming but they are good enough for our cases. | |
| 41 | // MinGW32, at least the older versions up until gcc 4.7, also provide the non-conforming interface. | |
| 42 | inline int vsnprintf(char* buf, std::size_t size, const char* format, std::va_list args) | |
| 43 | { | |
| 44 | int n = _vsnprintf(buf, size, format, args); | |
| 45 | if (static_cast< unsigned int >(n) >= size) | |
| 46 | { | |
| 47 | n = static_cast< int >(size); | |
| 48 | buf[size - 1] = '\0'; | |
| 49 | } | |
| 50 | return n; | |
| 51 | } | |
| 52 | ||
| 53 | # ifdef BOOST_LOG_USE_WCHAR_T | |
| 54 | inline int vswprintf(wchar_t* buf, std::size_t size, const wchar_t* format, std::va_list args) | |
| 55 | { | |
| 56 | int n = _vsnwprintf(buf, size, format, args); | |
| 57 | if (static_cast< unsigned int >(n) >= size) | |
| 58 | { | |
| 59 | n = static_cast< int >(size); | |
| 60 | buf[size - 1] = L'\0'; | |
| 61 | } | |
| 62 | return n; | |
| 63 | } | |
| 64 | # endif // BOOST_LOG_USE_WCHAR_T | |
| 65 | ||
| 66 | inline int snprintf(char* buf, std::size_t size, const char* format, ...) | |
| 67 | { | |
| 68 | std::va_list args; | |
| 69 | va_start(args, format); | |
| 70 | int n = vsnprintf(buf, size, format, args); | |
| 71 | va_end(args); | |
| 72 | return n; | |
| 73 | } | |
| 74 | ||
| 75 | # ifdef BOOST_LOG_USE_WCHAR_T | |
| 76 | inline int swprintf(wchar_t* buf, std::size_t size, const wchar_t* format, ...) | |
| 77 | { | |
| 78 | std::va_list args; | |
| 79 | va_start(args, format); | |
| 80 | int n = vswprintf(buf, size, format, args); | |
| 81 | va_end(args); | |
| 82 | return n; | |
| 83 | } | |
| 84 | # endif // BOOST_LOG_USE_WCHAR_T | |
| 85 | ||
| 86 | #else | |
| 87 | ||
| 88 | // Standard-conforming compilers already have the correct snprintfs | |
| 89 | using ::snprintf; | |
| 90 | using ::vsnprintf; | |
| 91 | ||
| 92 | # ifdef BOOST_LOG_USE_WCHAR_T | |
| 93 | using ::swprintf; | |
| 94 | using ::vswprintf; | |
| 95 | # endif // BOOST_LOG_USE_WCHAR_T | |
| 96 | ||
| 97 | #endif | |
| 98 | ||
| 99 | } // namespace aux | |
| 100 | ||
| 101 | BOOST_LOG_CLOSE_NAMESPACE // namespace log | |
| 102 | ||
| 103 | } // namespace boost | |
| 104 | ||
| 105 | #include <boost/log/detail/footer.hpp> | |
| 106 | ||
| 107 | #endif // BOOST_LOG_DETAIL_SNPRINTF_HPP_INCLUDED_ |