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 | // See http://www.boost.org/libs/iostreams for documentation. |
7 | |
8 | #ifndef BOOST_IOSTREAMS_CHAR_TRAITS_HPP_INCLUDED |
9 | #define BOOST_IOSTREAMS_CHAR_TRAITS_HPP_INCLUDED |
10 | |
11 | #if defined(_MSC_VER) && (_MSC_VER >= 1020) |
12 | # pragma once |
13 | #endif |
14 | |
15 | #include <boost/config.hpp> |
16 | #include <cstddef> |
17 | #include <cstdio> // EOF. |
18 | #include <string> // std::char_traits. |
19 | #include <boost/iostreams/detail/char_traits.hpp> |
20 | #include <boost/iostreams/detail/config/wide_streams.hpp> |
21 | #ifndef BOOST_IOSTREAMS_NO_WIDE_STREAMS |
22 | # include <cwchar> |
23 | #endif |
24 | |
25 | #ifdef BOOST_NO_STDC_NAMESPACE |
26 | namespace std { using ::wint_t; } |
27 | #endif |
28 | |
29 | namespace boost { namespace iostreams { |
30 | |
31 | // Dinkumware that comes with QNX Momentics 6.3.0, 4.0.2, incorrectly defines |
32 | // the EOF and WEOF macros to not std:: qualify the wint_t type (and so does |
33 | // Sun C++ 5.8 + STLport 4). Fix by placing the def in this scope. |
34 | // NOTE: Use BOOST_WORKAROUND? |
35 | #if (defined(__QNX__) && defined(BOOST_DINKUMWARE_STDLIB)) \ |
36 | || defined(__SUNPRO_CC) |
37 | using ::std::wint_t; |
38 | #endif |
39 | |
40 | const int WOULD_BLOCK = (int) (EOF - 1); |
41 | |
42 | #ifndef BOOST_IOSTREAMS_NO_WIDE_STREAMS |
43 | const std::wint_t WWOULD_BLOCK = (std::wint_t) (WEOF - 1); |
44 | #endif |
45 | |
46 | template<typename Ch> |
47 | struct char_traits; |
48 | |
49 | template<> |
50 | struct char_traits<char> : BOOST_IOSTREAMS_CHAR_TRAITS(char) { |
51 | static char newline() { return '\n'; } |
52 | static int good() { return '\n'; } |
53 | static int would_block() { return WOULD_BLOCK; } |
54 | static bool is_good(int c) { return c != EOF && c != WOULD_BLOCK; } |
55 | static bool is_eof(int c) { return c == EOF; } |
56 | static bool would_block(int c) { return c == WOULD_BLOCK; } |
57 | }; |
58 | |
59 | #ifndef BOOST_IOSTREAMS_NO_WIDE_STREAMS |
60 | template<> |
61 | struct char_traits<wchar_t> : std::char_traits<wchar_t> { |
62 | static wchar_t newline() { return L'\n'; } |
63 | static std::wint_t good() { return L'\n'; } |
64 | static std::wint_t would_block() { return WWOULD_BLOCK; } |
65 | static bool is_good(std::wint_t c) { return c != WEOF && c != WWOULD_BLOCK; } |
66 | static bool is_eof(std::wint_t c) { return c == WEOF; } |
67 | static bool would_block(std::wint_t c) { return c == WWOULD_BLOCK; } |
68 | }; |
69 | #endif |
70 | |
71 | } } // End namespaces iostreams, boost. |
72 | |
73 | #endif // #ifndef BOOST_IOSTREAMS_CHAR_TRAITS_HPP_INCLUDED |
74 | |