160 lines
3.9 KiB
C++
160 lines
3.9 KiB
C++
/*
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*
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* Copyright (c) 1998-2005
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* John Maddock
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*
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* Use, modification and distribution are subject to the
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* Boost Software License, Version 1.0. (See accompanying file
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* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*
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*/
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/*
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* LOCATION: see http://www.boost.org for most recent version.
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* FILE regex_workarounds.cpp
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* VERSION see <boost/version.hpp>
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* DESCRIPTION: Declares Misc workarounds.
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*/
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#ifndef BOOST_REGEX_WORKAROUND_HPP
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#define BOOST_REGEX_WORKAROUND_HPP
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#include <boost/regex/config.hpp>
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#include <algorithm>
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#include <stdexcept>
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#include <cstring>
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#ifndef BOOST_REGEX_STANDALONE
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#include <boost/detail/workaround.hpp>
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#include <boost/throw_exception.hpp>
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#endif
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#ifdef BOOST_REGEX_NO_BOOL
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# define BOOST_REGEX_MAKE_BOOL(x) static_cast<bool>((x) ? true : false)
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#else
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# define BOOST_REGEX_MAKE_BOOL(x) static_cast<bool>(x)
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#endif
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/*****************************************************************************
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*
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* helper functions pointer_construct/pointer_destroy:
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*
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****************************************************************************/
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#ifdef __cplusplus
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namespace boost{ namespace BOOST_REGEX_DETAIL_NS{
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#ifdef BOOST_REGEX_MSVC
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#pragma warning (push)
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#pragma warning (disable : 4100)
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#endif
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template <class T>
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inline void pointer_destroy(T* p)
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{ p->~T(); (void)p; }
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#ifdef BOOST_REGEX_MSVC
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#pragma warning (pop)
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#endif
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template <class T>
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inline void pointer_construct(T* p, const T& t)
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{ new (p) T(t); }
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}} // namespaces
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#endif
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/*****************************************************************************
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*
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* helper function copy:
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*
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****************************************************************************/
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#if defined(BOOST_WORKAROUND)
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#if BOOST_WORKAROUND(BOOST_REGEX_MSVC, >= 1400) && defined(__STDC_WANT_SECURE_LIB__) && __STDC_WANT_SECURE_LIB__
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#define BOOST_REGEX_HAS_STRCPY_S
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#endif
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#endif
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#ifdef __cplusplus
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namespace boost{ namespace BOOST_REGEX_DETAIL_NS{
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#if defined(BOOST_REGEX_MSVC) && (BOOST_REGEX_MSVC < 1910)
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//
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// MSVC 10 will either emit warnings or else refuse to compile
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// code that makes perfectly legitimate use of std::copy, when
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// the OutputIterator type is a user-defined class (apparently all user
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// defined iterators are "unsafe"). What's more Microsoft have removed their
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// non-standard "unchecked" versions, even though they are still in the MS
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// documentation!! Work around this as best we can:
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//
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template<class InputIterator, class OutputIterator>
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inline OutputIterator copy(
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InputIterator first,
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InputIterator last,
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OutputIterator dest
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)
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{
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while (first != last)
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*dest++ = *first++;
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return dest;
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}
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#else
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using std::copy;
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#endif
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#if defined(BOOST_REGEX_HAS_STRCPY_S)
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// use safe versions of strcpy etc:
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using ::strcpy_s;
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using ::strcat_s;
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#else
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inline std::size_t strcpy_s(
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char *strDestination,
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std::size_t sizeInBytes,
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const char *strSource
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)
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{
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std::size_t lenSourceWithNull = std::strlen(strSource) + 1;
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if (lenSourceWithNull > sizeInBytes)
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return 1;
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std::memcpy(strDestination, strSource, lenSourceWithNull);
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return 0;
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}
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inline std::size_t strcat_s(
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char *strDestination,
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std::size_t sizeInBytes,
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const char *strSource
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)
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{
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std::size_t lenSourceWithNull = std::strlen(strSource) + 1;
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std::size_t lenDestination = std::strlen(strDestination);
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if (lenSourceWithNull + lenDestination > sizeInBytes)
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return 1;
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std::memcpy(strDestination + lenDestination, strSource, lenSourceWithNull);
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return 0;
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}
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#endif
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inline void overflow_error_if_not_zero(std::size_t i)
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{
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if(i)
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{
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std::overflow_error e("String buffer too small");
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#ifndef BOOST_REGEX_STANDALONE
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boost::throw_exception(e);
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#else
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throw e;
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#endif
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}
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}
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}} // namespaces
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#endif // __cplusplus
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#endif // include guard
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