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/Src/Dependencies/Boost/boost/iostreams/detail/char_traits.hpp

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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 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) boost::iostreams::detail::char_traits
32
33namespace boost { namespace iostreams { namespace detail {
34
35struct 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