Imported Upstream version 1.57.0upstream/1.57.0

1 files changed, 106 insertions, 0 deletions

diff --git a/boost/log/detail/snprintf.hpp b/boost/log/detail/snprintf.hpp
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+/*
+ *          Copyright Andrey Semashev 2007 - 2014.
+ * 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)
+ */
+/*!
+ * \file   snprintf.hpp
+ * \author Andrey Semashev
+ * \date   20.02.2009
+ *
+ * \brief  This header is the Boost.Log library implementation, see the library documentation
+ *         at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
+ */
+
+#ifndef BOOST_LOG_DETAIL_SNPRINTF_HPP_INCLUDED_
+#define BOOST_LOG_DETAIL_SNPRINTF_HPP_INCLUDED_
+
+#include <stdio.h>
+#include <cstddef>
+#include <cstdarg>
+#include <boost/log/detail/config.hpp>
+#ifdef BOOST_LOG_USE_WCHAR_T
+#include <wchar.h>
+#endif // BOOST_LOG_USE_WCHAR_T
+#include <boost/log/detail/header.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+
+BOOST_LOG_OPEN_NAMESPACE
+
+namespace aux {
+
+#if !defined(_MSC_VER)
+
+// Standard-conforming compilers already have the correct snprintfs
+using ::snprintf;
+using ::vsnprintf;
+
+#   ifdef BOOST_LOG_USE_WCHAR_T
+using ::swprintf;
+using ::vswprintf;
+#   endif // BOOST_LOG_USE_WCHAR_T
+
+#else // !defined(_MSC_VER)
+
+// MSVC snprintfs are not conforming but they are good enough for our cases
+inline int vsnprintf(char* buf, std::size_t size, const char* format, std::va_list args)
+{
+    int n = _vsnprintf(buf, size, format, args);
+    if (static_cast< unsigned int >(n) >= size)
+    {
+        n = static_cast< int >(size);
+        buf[size - 1] = '\0';
+    }
+    return n;
+}
+
+#   ifdef BOOST_LOG_USE_WCHAR_T
+inline int vswprintf(wchar_t* buf, std::size_t size, const wchar_t* format, std::va_list args)
+{
+    int n = _vsnwprintf(buf, size, format, args);
+    if (static_cast< unsigned int >(n) >= size)
+    {
+        n = static_cast< int >(size);
+        buf[size - 1] = L'\0';
+    }
+    return n;
+}
+#   endif // BOOST_LOG_USE_WCHAR_T
+
+inline int snprintf(char* buf, std::size_t size, const char* format, ...)
+{
+    std::va_list args;
+    va_start(args, format);
+    int n = vsnprintf(buf, size, format, args);
+    va_end(args);
+    return n;
+}
+
+#   ifdef BOOST_LOG_USE_WCHAR_T
+inline int swprintf(wchar_t* buf, std::size_t size, const wchar_t* format, ...)
+{
+    std::va_list args;
+    va_start(args, format);
+    int n = vswprintf(buf, size, format, args);
+    va_end(args);
+    return n;
+}
+#   endif // BOOST_LOG_USE_WCHAR_T
+
+#endif // !defined(_MSC_VER)
+
+} // namespace aux
+
+BOOST_LOG_CLOSE_NAMESPACE // namespace log
+
+} // namespace boost
+
+#include <boost/log/detail/footer.hpp>
+
+#endif // BOOST_LOG_DETAIL_SNPRINTF_HPP_INCLUDED_