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Diffstat (limited to 'boost/format/detail/workarounds_gcc-2_95.hpp')
| -rw-r--r-- | boost/format/detail/workarounds_gcc-2_95.hpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/boost/format/detail/workarounds_gcc-2_95.hpp b/boost/format/detail/workarounds_gcc-2_95.hpp new file mode 100644 index 0000000000..8c49d42d02 --- /dev/null +++ b/boost/format/detail/workarounds_gcc-2_95.hpp @@ -0,0 +1,162 @@ +// ---------------------------------------------------------------------------- +// workarounds for gcc < 3.0. +// ---------------------------------------------------------------------------- + +// Copyright Samuel Krempp 2003. Use, modification, and distribution are +// subject to 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) + +// See http://www.boost.org/libs/format for library home page + + +// ---------------------------------------------------------------------------- + +// There's a lot to do, the stdlib shipped with gcc prior to 3.x +// was terribly non-conforming. +// . defines macros switches +// . supplies template classes basic_foo<char,Tr> where gcc only supplies foo. +// i.e : +// - basic_ios<char, Tr> from ios +// - basic_ostream<char, Tr> from ostream +// - basic_srteambuf<char, Tr> from streambuf +// these can be used transparently. (it obviously does not work for wchar_t) +// . specialise CompatAlloc and CompatTraits to wrap gcc-2.95's +// string_char_traits and std::alloc + +#if BOOST_WORKAROUND(__GNUC__, < 3) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION) + // only for gcc-2.95's native stdlib + +#ifndef BOOST_FORMAT_WORKAROUNDS_GCC295_H +#define BOOST_FORMAT_WORKAROUNDS_GCC295_H + +// SGI STL doesnt have <ostream> and others, so we need iostream. +#include <iostream> +#define BOOST_FORMAT_OSTREAM_DEFINED + +#include <streambuf.h> +#define BOOST_FORMAT_STREAMBUF_DEFINED + +#define BOOST_NO_TEMPLATE_STD_STREAM + +#ifndef BOOST_IO_STD +# define BOOST_IO_STD std:: +#endif + + + +// *** +// gcc's simple classes turned into standard-like template classes : + +namespace std { + + + // gcc has string_char_traits, it's incomplete. + // we declare a std::char_traits, and specialize CompatTraits<..> on it + // to do what is required + template<class Ch> + class char_traits; // no definition here, we will just use it as a tag. + + template <class Ch, class Tr> + class basic_streambuf; + + template <class Tr> + class basic_streambuf<char, Tr> : public streambuf { + }; + + template <class Ch, class Tr=::std::char_traits<Ch> > + class basic_ios; + + template <class Tr> + class basic_ios<char, Tr> : public ostream { + public: + basic_ios(streambuf * p) : ostream(p) {}; + char fill() const { return ios::fill(); } // gcc returns wchar.. + char fill(char c) { return ios::fill(c); } // gcc takes wchar.. + char widen(char c) { return c; } + char narrow(char c, char def) { return c; } + basic_ios& copyfmt(const ios& right) { + fill(right.fill()); + flags(right.flags() ); + exceptions(right.exceptions()); + width(right.width()); + precision(right.precision()); + return *this; + } + }; + + + typedef ios ios_base; + + template <class Ch, class Tr> + class basic_ostream; + + template <class Tr> + class basic_ostream<char, Tr> : public basic_ios<char, Tr> + { + public: + basic_ostream(streambuf * p) : basic_ios<char,Tr> (p) {} + }; + +} // namespace std + + +namespace boost { + namespace io { + + + // ** CompatTraits gcc2.95 specialisations ---------------------------- + template<class Ch> + class CompatTraits< ::std::string_char_traits<Ch> > + : public ::std::string_char_traits<Ch> + { + public: + typedef CompatTraits compatible_type; + + typedef Ch char_type; + typedef int int_type; + typedef ::std::streampos pos_type; + typedef ::std::streamoff off_type; + + static char_type + to_char_type(const int_type& meta) { + return static_cast<char_type>(meta); } + static int_type + to_int_type(const char_type& ch) { + return static_cast<int_type>(static_cast<unsigned char>(ch) );} + static bool + eq_int_type(const int_type& left, const int_type& right) { + return left == right; } + static int_type + eof() { + return static_cast<int_type>(EOF); + } + static int_type + not_eof(const int_type& meta) { + return (meta == eof()) ? 0 : meta; + } + }; + + template<class Ch> + class CompatTraits< ::std::char_traits<Ch> > { + public: + typedef CompatTraits< ::std::string_char_traits<Ch> > compatible_type; + }; + + // ** CompatAlloc gcc-2.95 specialisations --------------------------- + template<> + class CompatAlloc< ::std::alloc> + { + public: + typedef ::std::allocator<char> compatible_type; + }; + + } // N.S. io +} // N.S. boost + + + + + +#endif // include guard + +#endif // if workaround |