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  1. // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
  2. // (C) Copyright 2003-2007 Jonathan Turkanis
  3. // Distributed under the Boost Software License, Version 1.0. (See accompanying
  4. // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
  5.  
  6. // Provides std::char_traits for libraries without templated streams. Should not
  7. // be confused with <boost/iostreams/char_traits.hpp>, which defines the
  8. // template mars_boost::iostreams::char_traits.
  9.  
  10. // See http://www.boost.org/libs/iostreams for documentation.
  11.  
  12. #ifndef BOOST_IOSTREAMS_DETAIL_CHAR_TRAITS_HPP_INCLUDED
  13. #define BOOST_IOSTREAMS_DETAIL_CHAR_TRAITS_HPP_INCLUDED
  14.  
  15. #if defined(_MSC_VER) && (_MSC_VER >= 1020)
  16. # pragma once
  17. #endif
  18.  
  19. #include <iosfwd>
  20. #include <boost/iostreams/detail/config/wide_streams.hpp>
  21. #ifdef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES
  22. # include <boost/config.hpp> // Make sure size_t is in std.
  23. # include <cstddef>
  24. # include <cstring>
  25. # include <cstdio>
  26. #endif
  27.  
  28. #ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //--------------------------------//
  29. # define BOOST_IOSTREAMS_CHAR_TRAITS(ch) std::char_traits< ch >
  30. #else
  31. # define BOOST_IOSTREAMS_CHAR_TRAITS(ch) mars_boost::iostreams::detail::char_traits
  32.  
  33. namespace mars_boost {} namespace boost = mars_boost; namespace mars_boost { namespace iostreams { namespace detail {
  34.  
  35. struct char_traits  {
  36.     typedef char            char_type;
  37.     typedef int             int_type;
  38.     typedef std::streampos  pos_type;
  39.     typedef std::streamoff  off_type;
  40.  
  41.     // Note: this may not be not conforming, since it treats chars as unsigned,
  42.     // but is only used to test for equality.
  43.     static int compare(const char* lhs, const char* rhs, std::size_t n)
  44.     { return std::strncmp(lhs, rhs, n); }
  45.     static char* copy(char *dest, const char *src, std::size_t n)
  46.     { return static_cast<char*>(std::memcpy(dest, src, n)); }
  47.     static char* move(char *dest, const char *src, std::size_t n)
  48.     { return static_cast<char*>(std::memmove(dest, src, n)); }
  49.     static const char* find(const char* s, std::size_t n, const char& c)
  50.     { return (const char*) (const void*) std::memchr(s, c, n); }
  51.     static char to_char_type(const int& c) { return c; }
  52.     static int to_int_type(const char& c) { return c; }
  53.     static bool eq_int_type(const int& lhs, const int& rhs)
  54.     { return lhs == rhs; }
  55.     static int eof() { return EOF; }
  56.     static int not_eof(const int& c) { return c != EOF ? c : '\n'; }
  57. };
  58.  
  59. } } } // End namespaces detail, iostreams, boost.
  60.  
  61. #endif // #ifdef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //-----------------------//
  62.  
  63. #endif // #ifndef BOOST_IOSTREAMS_DETAIL_CHAR_TRAITS_HPP_INCLUDED
  64.  
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