epoc32/include/stdapis/boost/io/ios_state.hpp
branchSymbian2
changeset 2 2fe1408b6811
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/epoc32/include/stdapis/boost/io/ios_state.hpp	Tue Mar 16 16:12:26 2010 +0000
     1.3 @@ -0,0 +1,417 @@
     1.4 +//  Boost io/ios_state.hpp header file  --------------------------------------//
     1.5 +
     1.6 +//  Copyright 2002, 2005 Daryle Walker.  Use, modification, and distribution
     1.7 +//  are subject to the Boost Software License, Version 1.0.  (See accompanying
     1.8 +//  file LICENSE_1_0.txt or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
     1.9 +
    1.10 +//  See <http://www.boost.org/libs/io/> for the library's home page.
    1.11 +
    1.12 +#ifndef BOOST_IO_IOS_STATE_HPP
    1.13 +#define BOOST_IO_IOS_STATE_HPP
    1.14 +
    1.15 +#include <boost/io_fwd.hpp>  // self include
    1.16 +#include <boost/detail/workaround.hpp>
    1.17 +
    1.18 +#include <ios>        // for std::ios_base, std::basic_ios, etc.
    1.19 +#ifndef BOOST_NO_STD_LOCALE
    1.20 +#include <locale>     // for std::locale
    1.21 +#endif
    1.22 +#include <ostream>    // for std::basic_ostream
    1.23 +#include <streambuf>  // for std::basic_streambuf
    1.24 +#include <string>     // for std::char_traits
    1.25 +
    1.26 +namespace boost
    1.27 +{
    1.28 +namespace io
    1.29 +{
    1.30 +
    1.31 +
    1.32 +//  Basic stream state saver class declarations  -----------------------------//
    1.33 +
    1.34 +class ios_flags_saver
    1.35 +{
    1.36 +public:
    1.37 +    typedef ::std::ios_base            state_type;
    1.38 +    typedef ::std::ios_base::fmtflags  aspect_type;
    1.39 +
    1.40 +    explicit  ios_flags_saver( state_type &s )
    1.41 +        : s_save_( s ), a_save_( s.flags() )
    1.42 +        {}
    1.43 +    ios_flags_saver( state_type &s, aspect_type const &a )
    1.44 +        : s_save_( s ), a_save_( s.flags(a) )
    1.45 +        {}
    1.46 +    ~ios_flags_saver()
    1.47 +        { this->restore(); }
    1.48 +
    1.49 +    void  restore()
    1.50 +        { s_save_.flags( a_save_ ); }
    1.51 +
    1.52 +private:
    1.53 +    state_type &       s_save_;
    1.54 +    aspect_type const  a_save_;
    1.55 +};
    1.56 +
    1.57 +class ios_precision_saver
    1.58 +{
    1.59 +public:
    1.60 +    typedef ::std::ios_base    state_type;
    1.61 +    typedef ::std::streamsize  aspect_type;
    1.62 +
    1.63 +    explicit  ios_precision_saver( state_type &s )
    1.64 +        : s_save_( s ), a_save_( s.precision() )
    1.65 +        {}
    1.66 +    ios_precision_saver( state_type &s, aspect_type const &a )
    1.67 +        : s_save_( s ), a_save_( s.precision(a) )
    1.68 +        {}
    1.69 +    ~ios_precision_saver()
    1.70 +        { this->restore(); }
    1.71 +
    1.72 +    void  restore()
    1.73 +        { s_save_.precision( a_save_ ); }
    1.74 +
    1.75 +private:
    1.76 +    state_type &       s_save_;
    1.77 +    aspect_type const  a_save_;
    1.78 +};
    1.79 +
    1.80 +class ios_width_saver
    1.81 +{
    1.82 +public:
    1.83 +    typedef ::std::ios_base    state_type;
    1.84 +    typedef ::std::streamsize  aspect_type;
    1.85 +
    1.86 +    explicit  ios_width_saver( state_type &s )
    1.87 +        : s_save_( s ), a_save_( s.width() )
    1.88 +        {}
    1.89 +    ios_width_saver( state_type &s, aspect_type const &a )
    1.90 +        : s_save_( s ), a_save_( s.width(a) )
    1.91 +        {}
    1.92 +    ~ios_width_saver()
    1.93 +        { this->restore(); }
    1.94 +
    1.95 +    void  restore()
    1.96 +        { s_save_.width( a_save_ ); }
    1.97 +
    1.98 +private:
    1.99 +    state_type &       s_save_;
   1.100 +    aspect_type const  a_save_;
   1.101 +};
   1.102 +
   1.103 +
   1.104 +//  Advanced stream state saver class template declarations  -----------------//
   1.105 +
   1.106 +template < typename Ch, class Tr >
   1.107 +class basic_ios_iostate_saver
   1.108 +{
   1.109 +public:
   1.110 +    typedef ::std::basic_ios<Ch, Tr>  state_type;
   1.111 +    typedef ::std::ios_base::iostate  aspect_type;
   1.112 +
   1.113 +    explicit  basic_ios_iostate_saver( state_type &s )
   1.114 +        : s_save_( s ), a_save_( s.rdstate() )
   1.115 +        {}
   1.116 +    basic_ios_iostate_saver( state_type &s, aspect_type const &a )
   1.117 +        : s_save_( s ), a_save_( s.rdstate() )
   1.118 +        { s.clear(a); }
   1.119 +    ~basic_ios_iostate_saver()
   1.120 +        { this->restore(); }
   1.121 +
   1.122 +    void  restore()
   1.123 +        { s_save_.clear( a_save_ ); }
   1.124 +
   1.125 +private:
   1.126 +    state_type &       s_save_;
   1.127 +    aspect_type const  a_save_;
   1.128 +};
   1.129 +
   1.130 +template < typename Ch, class Tr >
   1.131 +class basic_ios_exception_saver
   1.132 +{
   1.133 +public:
   1.134 +    typedef ::std::basic_ios<Ch, Tr>  state_type;
   1.135 +    typedef ::std::ios_base::iostate  aspect_type;
   1.136 +
   1.137 +    explicit  basic_ios_exception_saver( state_type &s )
   1.138 +        : s_save_( s ), a_save_( s.exceptions() )
   1.139 +        {}
   1.140 +#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x582))
   1.141 +    basic_ios_exception_saver( state_type &s, aspect_type a )
   1.142 +#else
   1.143 +    basic_ios_exception_saver( state_type &s, aspect_type const &a )
   1.144 +#endif
   1.145 +        : s_save_( s ), a_save_( s.exceptions() )
   1.146 +        { s.exceptions(a); }
   1.147 +    ~basic_ios_exception_saver()
   1.148 +        { this->restore(); }
   1.149 +
   1.150 +    void  restore()
   1.151 +        { s_save_.exceptions( a_save_ ); }
   1.152 +
   1.153 +private:
   1.154 +    state_type &       s_save_;
   1.155 +    aspect_type const  a_save_;
   1.156 +};
   1.157 +
   1.158 +template < typename Ch, class Tr >
   1.159 +class basic_ios_tie_saver
   1.160 +{
   1.161 +public:
   1.162 +    typedef ::std::basic_ios<Ch, Tr>        state_type;
   1.163 +    typedef ::std::basic_ostream<Ch, Tr> *  aspect_type;
   1.164 +
   1.165 +    explicit  basic_ios_tie_saver( state_type &s )
   1.166 +        : s_save_( s ), a_save_( s.tie() )
   1.167 +        {}
   1.168 +    basic_ios_tie_saver( state_type &s, aspect_type const &a )
   1.169 +        : s_save_( s ), a_save_( s.tie(a) )
   1.170 +        {}
   1.171 +    ~basic_ios_tie_saver()
   1.172 +        { this->restore(); }
   1.173 +
   1.174 +    void  restore()
   1.175 +        { s_save_.tie( a_save_ ); }
   1.176 +
   1.177 +private:
   1.178 +    state_type &       s_save_;
   1.179 +    aspect_type const  a_save_;
   1.180 +};
   1.181 +
   1.182 +template < typename Ch, class Tr >
   1.183 +class basic_ios_rdbuf_saver
   1.184 +{
   1.185 +public:
   1.186 +    typedef ::std::basic_ios<Ch, Tr>          state_type;
   1.187 +    typedef ::std::basic_streambuf<Ch, Tr> *  aspect_type;
   1.188 +
   1.189 +    explicit  basic_ios_rdbuf_saver( state_type &s )
   1.190 +        : s_save_( s ), a_save_( s.rdbuf() )
   1.191 +        {}
   1.192 +    basic_ios_rdbuf_saver( state_type &s, aspect_type const &a )
   1.193 +        : s_save_( s ), a_save_( s.rdbuf(a) )
   1.194 +        {}
   1.195 +    ~basic_ios_rdbuf_saver()
   1.196 +        { this->restore(); }
   1.197 +
   1.198 +    void  restore()
   1.199 +        { s_save_.rdbuf( a_save_ ); }
   1.200 +
   1.201 +private:
   1.202 +    state_type &       s_save_;
   1.203 +    aspect_type const  a_save_;
   1.204 +};
   1.205 +
   1.206 +template < typename Ch, class Tr >
   1.207 +class basic_ios_fill_saver
   1.208 +{
   1.209 +public:
   1.210 +    typedef ::std::basic_ios<Ch, Tr>        state_type;
   1.211 +    typedef typename state_type::char_type  aspect_type;
   1.212 +
   1.213 +    explicit  basic_ios_fill_saver( state_type &s )
   1.214 +        : s_save_( s ), a_save_( s.fill() )
   1.215 +        {}
   1.216 +    basic_ios_fill_saver( state_type &s, aspect_type const &a )
   1.217 +        : s_save_( s ), a_save_( s.fill(a) )
   1.218 +        {}
   1.219 +    ~basic_ios_fill_saver()
   1.220 +        { this->restore(); }
   1.221 +
   1.222 +    void  restore()
   1.223 +        { s_save_.fill( a_save_ ); }
   1.224 +
   1.225 +private:
   1.226 +    state_type &       s_save_;
   1.227 +    aspect_type const  a_save_;
   1.228 +};
   1.229 +
   1.230 +#ifndef BOOST_NO_STD_LOCALE
   1.231 +template < typename Ch, class Tr >
   1.232 +class basic_ios_locale_saver
   1.233 +{
   1.234 +public:
   1.235 +    typedef ::std::basic_ios<Ch, Tr> state_type;
   1.236 +    typedef ::std::locale aspect_type;
   1.237 +
   1.238 +    explicit basic_ios_locale_saver( state_type &s )
   1.239 +        : s_save_( s ), a_save_( s.getloc() )
   1.240 +        {}
   1.241 +    basic_ios_locale_saver( state_type &s, aspect_type const &a )
   1.242 +        : s_save_( s ), a_save_( s.imbue(a) )
   1.243 +        {}
   1.244 +    ~basic_ios_locale_saver()
   1.245 +        { this->restore(); }
   1.246 +
   1.247 +    void  restore()
   1.248 +        { s_save_.imbue( a_save_ ); }
   1.249 +
   1.250 +private:
   1.251 +    state_type &       s_save_;
   1.252 +    aspect_type const  a_save_;
   1.253 +};
   1.254 +#endif
   1.255 +
   1.256 +
   1.257 +//  User-defined stream state saver class declarations  ----------------------//
   1.258 +
   1.259 +class ios_iword_saver
   1.260 +{
   1.261 +public:
   1.262 +    typedef ::std::ios_base  state_type;
   1.263 +    typedef int              index_type;
   1.264 +    typedef long             aspect_type;
   1.265 +
   1.266 +    explicit ios_iword_saver( state_type &s, index_type i )
   1.267 +        : s_save_( s ), a_save_( s.iword(i) ), i_save_( i )
   1.268 +        {}
   1.269 +    ios_iword_saver( state_type &s, index_type i, aspect_type const &a )
   1.270 +        : s_save_( s ), a_save_( s.iword(i) ), i_save_( i )
   1.271 +        { s.iword(i) = a; }
   1.272 +    ~ios_iword_saver()
   1.273 +        { this->restore(); }
   1.274 +
   1.275 +    void  restore()
   1.276 +        { s_save_.iword( i_save_ ) = a_save_; }
   1.277 +
   1.278 +private:
   1.279 +    state_type &       s_save_;
   1.280 +    aspect_type const  a_save_;
   1.281 +    index_type const   i_save_;
   1.282 +};
   1.283 +
   1.284 +class ios_pword_saver
   1.285 +{
   1.286 +public:
   1.287 +    typedef ::std::ios_base  state_type;
   1.288 +    typedef int              index_type;
   1.289 +    typedef void *           aspect_type;
   1.290 +
   1.291 +    explicit  ios_pword_saver( state_type &s, index_type i )
   1.292 +        : s_save_( s ), a_save_( s.pword(i) ), i_save_( i )
   1.293 +        {}
   1.294 +    ios_pword_saver( state_type &s, index_type i, aspect_type const &a )
   1.295 +        : s_save_( s ), a_save_( s.pword(i) ), i_save_( i )
   1.296 +        { s.pword(i) = a; }
   1.297 +    ~ios_pword_saver()
   1.298 +        { this->restore(); }
   1.299 +
   1.300 +    void  restore()
   1.301 +        { s_save_.pword( i_save_ ) = a_save_; }
   1.302 +
   1.303 +private:
   1.304 +    state_type &       s_save_;
   1.305 +    aspect_type const  a_save_;
   1.306 +    index_type const   i_save_;
   1.307 +};
   1.308 +
   1.309 +
   1.310 +//  Combined stream state saver class (template) declarations  ---------------//
   1.311 +
   1.312 +class ios_base_all_saver
   1.313 +{
   1.314 +public:
   1.315 +    typedef ::std::ios_base  state_type;
   1.316 +
   1.317 +    explicit  ios_base_all_saver( state_type &s )
   1.318 +        : s_save_( s ), a1_save_( s.flags() ), a2_save_( s.precision() )
   1.319 +        , a3_save_( s.width() )
   1.320 +        {}
   1.321 +
   1.322 +    ~ios_base_all_saver()
   1.323 +        { this->restore(); }
   1.324 +
   1.325 +    void  restore()
   1.326 +    {
   1.327 +        s_save_.width( a3_save_ );
   1.328 +        s_save_.precision( a2_save_ );
   1.329 +        s_save_.flags( a1_save_ );
   1.330 +    }
   1.331 +
   1.332 +private:
   1.333 +    state_type &                s_save_;
   1.334 +    state_type::fmtflags const  a1_save_;
   1.335 +    ::std::streamsize const     a2_save_;
   1.336 +    ::std::streamsize const     a3_save_;
   1.337 +};
   1.338 +
   1.339 +template < typename Ch, class Tr >
   1.340 +class basic_ios_all_saver
   1.341 +{
   1.342 +public:
   1.343 +    typedef ::std::basic_ios<Ch, Tr>  state_type;
   1.344 +
   1.345 +    explicit  basic_ios_all_saver( state_type &s )
   1.346 +        : s_save_( s ), a1_save_( s.flags() ), a2_save_( s.precision() )
   1.347 +        , a3_save_( s.width() ), a4_save_( s.rdstate() )
   1.348 +        , a5_save_( s.exceptions() ), a6_save_( s.tie() )
   1.349 +        , a7_save_( s.rdbuf() ), a8_save_( s.fill() )
   1.350 +        #ifndef BOOST_NO_STD_LOCALE
   1.351 +        , a9_save_( s.getloc() )
   1.352 +        #endif
   1.353 +        {}
   1.354 +
   1.355 +    ~basic_ios_all_saver()
   1.356 +        { this->restore(); }
   1.357 +
   1.358 +    void  restore()
   1.359 +    {
   1.360 +        #ifndef BOOST_NO_STD_LOCALE
   1.361 +        s_save_.imbue( a9_save_ );
   1.362 +        #endif
   1.363 +        s_save_.fill( a8_save_ );
   1.364 +        s_save_.rdbuf( a7_save_ );
   1.365 +        s_save_.tie( a6_save_ );
   1.366 +        s_save_.exceptions( a5_save_ );
   1.367 +        s_save_.clear( a4_save_ );
   1.368 +        s_save_.width( a3_save_ );
   1.369 +        s_save_.precision( a2_save_ );
   1.370 +        s_save_.flags( a1_save_ );
   1.371 +    }
   1.372 +
   1.373 +private:
   1.374 +    state_type &                            s_save_;
   1.375 +    typename state_type::fmtflags const     a1_save_;
   1.376 +    ::std::streamsize const                 a2_save_;
   1.377 +    ::std::streamsize const                 a3_save_;
   1.378 +    typename state_type::iostate const      a4_save_;
   1.379 +    typename state_type::iostate const      a5_save_;
   1.380 +    ::std::basic_ostream<Ch, Tr> * const    a6_save_;
   1.381 +    ::std::basic_streambuf<Ch, Tr> * const  a7_save_;
   1.382 +    typename state_type::char_type const    a8_save_;
   1.383 +    #ifndef BOOST_NO_STD_LOCALE
   1.384 +    ::std::locale const                     a9_save_;
   1.385 +    #endif
   1.386 +};
   1.387 +
   1.388 +class ios_all_word_saver
   1.389 +{
   1.390 +public:
   1.391 +    typedef ::std::ios_base  state_type;
   1.392 +    typedef int              index_type;
   1.393 +
   1.394 +    ios_all_word_saver( state_type &s, index_type i )
   1.395 +        : s_save_( s ), i_save_( i ), a1_save_( s.iword(i) )
   1.396 +        , a2_save_( s.pword(i) )
   1.397 +        {}
   1.398 +
   1.399 +    ~ios_all_word_saver()
   1.400 +        { this->restore(); }
   1.401 +
   1.402 +    void  restore()
   1.403 +    {
   1.404 +        s_save_.pword( i_save_ ) = a2_save_;
   1.405 +        s_save_.iword( i_save_ ) = a1_save_;
   1.406 +    }
   1.407 +
   1.408 +private:
   1.409 +    state_type &      s_save_;
   1.410 +    index_type const  i_save_;
   1.411 +    long const        a1_save_;
   1.412 +    void * const      a2_save_;
   1.413 +};
   1.414 +
   1.415 +
   1.416 +}  // namespace io
   1.417 +}  // namespace boost
   1.418 +
   1.419 +
   1.420 +#endif  // BOOST_IO_IOS_STATE_HPP