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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)
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