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1 | // ---------------------------------------------------------------------------- |
2 | // workarounds for gcc < 3.0. | |
3 | // ---------------------------------------------------------------------------- | |
4 | ||
5 | // Copyright Samuel Krempp 2003. Use, modification, and distribution are | |
6 | // subject to the Boost Software License, Version 1.0. (See accompanying | |
7 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
8 | ||
9 | // See http://www.boost.org/libs/format for library home page | |
10 | ||
11 | ||
12 | // ---------------------------------------------------------------------------- | |
13 | ||
14 | // There's a lot to do, the stdlib shipped with gcc prior to 3.x | |
15 | // was terribly non-conforming. | |
16 | // . defines macros switches | |
17 | // . supplies template classes basic_foo<char,Tr> where gcc only supplies foo. | |
18 | // i.e : | |
19 | // - basic_ios<char, Tr> from ios | |
20 | // - basic_ostream<char, Tr> from ostream | |
21 | // - basic_srteambuf<char, Tr> from streambuf | |
22 | // these can be used transparently. (it obviously does not work for wchar_t) | |
23 | // . specialise CompatAlloc and CompatTraits to wrap gcc-2.95's | |
24 | // string_char_traits and std::alloc | |
25 | ||
26 | #if BOOST_WORKAROUND(__GNUC__, < 3) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION) | |
27 | // only for gcc-2.95's native stdlib | |
28 | ||
29 | #ifndef BOOST_FORMAT_WORKAROUNDS_GCC295_H | |
30 | #define BOOST_FORMAT_WORKAROUNDS_GCC295_H | |
31 | ||
32 | // SGI STL doesnt have <ostream> and others, so we need iostream. | |
33 | #include <iostream> | |
34 | #define BOOST_FORMAT_OSTREAM_DEFINED | |
35 | ||
36 | #include <streambuf.h> | |
37 | #define BOOST_FORMAT_STREAMBUF_DEFINED | |
38 | ||
39 | #define BOOST_NO_TEMPLATE_STD_STREAM | |
40 | ||
41 | #ifndef BOOST_IO_STD | |
42 | # define BOOST_IO_STD std:: | |
43 | #endif | |
44 | ||
45 | ||
46 | ||
47 | // *** | |
48 | // gcc's simple classes turned into standard-like template classes : | |
49 | ||
50 | namespace std { | |
51 | ||
52 | ||
53 | // gcc has string_char_traits, it's incomplete. | |
54 | // we declare a std::char_traits, and specialize CompatTraits<..> on it | |
55 | // to do what is required | |
56 | template<class Ch> | |
57 | class char_traits; // no definition here, we will just use it as a tag. | |
58 | ||
59 | template <class Ch, class Tr> | |
60 | class basic_streambuf; | |
61 | ||
62 | template <class Tr> | |
63 | class basic_streambuf<char, Tr> : public streambuf { | |
64 | }; | |
65 | ||
66 | template <class Ch, class Tr=::std::char_traits<Ch> > | |
67 | class basic_ios; | |
68 | ||
69 | template <class Tr> | |
70 | class basic_ios<char, Tr> : public ostream { | |
71 | public: | |
72 | basic_ios(streambuf * p) : ostream(p) {}; | |
73 | char fill() const { return ios::fill(); } // gcc returns wchar.. | |
74 | char fill(char c) { return ios::fill(c); } // gcc takes wchar.. | |
75 | char widen(char c) { return c; } | |
76 | char narrow(char c, char def) { return c; } | |
77 | basic_ios& copyfmt(const ios& right) { | |
78 | fill(right.fill()); | |
79 | flags(right.flags() ); | |
80 | exceptions(right.exceptions()); | |
81 | width(right.width()); | |
82 | precision(right.precision()); | |
83 | return *this; | |
84 | } | |
85 | }; | |
86 | ||
87 | ||
88 | typedef ios ios_base; | |
89 | ||
90 | template <class Ch, class Tr> | |
91 | class basic_ostream; | |
92 | ||
93 | template <class Tr> | |
94 | class basic_ostream<char, Tr> : public basic_ios<char, Tr> | |
95 | { | |
96 | public: | |
97 | basic_ostream(streambuf * p) : basic_ios<char,Tr> (p) {} | |
98 | }; | |
99 | ||
100 | } // namespace std | |
101 | ||
102 | ||
103 | namespace boost { | |
104 | namespace io { | |
105 | ||
106 | ||
107 | // ** CompatTraits gcc2.95 specialisations ---------------------------- | |
108 | template<class Ch> | |
109 | class CompatTraits< ::std::string_char_traits<Ch> > | |
110 | : public ::std::string_char_traits<Ch> | |
111 | { | |
112 | public: | |
113 | typedef CompatTraits compatible_type; | |
114 | ||
115 | typedef Ch char_type; | |
116 | typedef int int_type; | |
117 | typedef ::std::streampos pos_type; | |
118 | typedef ::std::streamoff off_type; | |
119 | ||
120 | static char_type | |
121 | to_char_type(const int_type& meta) { | |
122 | return static_cast<char_type>(meta); } | |
123 | static int_type | |
124 | to_int_type(const char_type& ch) { | |
125 | return static_cast<int_type>(static_cast<unsigned char>(ch) );} | |
126 | static bool | |
127 | eq_int_type(const int_type& left, const int_type& right) { | |
128 | return left == right; } | |
129 | static int_type | |
130 | eof() { | |
131 | return static_cast<int_type>(EOF); | |
132 | } | |
133 | static int_type | |
134 | not_eof(const int_type& meta) { | |
135 | return (meta == eof()) ? 0 : meta; | |
136 | } | |
137 | }; | |
138 | ||
139 | template<class Ch> | |
140 | class CompatTraits< ::std::char_traits<Ch> > { | |
141 | public: | |
142 | typedef CompatTraits< ::std::string_char_traits<Ch> > compatible_type; | |
143 | }; | |
144 | ||
145 | // ** CompatAlloc gcc-2.95 specialisations --------------------------- | |
146 | template<> | |
147 | class CompatAlloc< ::std::alloc> | |
148 | { | |
149 | public: | |
150 | typedef ::std::allocator<char> compatible_type; | |
151 | }; | |
152 | ||
153 | } // N.S. io | |
154 | } // N.S. boost | |
155 | ||
156 | ||
157 | ||
158 | ||
159 | ||
160 | #endif // include guard | |
161 | ||
162 | #endif // if workaround |