| /* |
| Copyright 2002, 2005 Daryle Walker |
| |
| Distributed under the Boost Software License, Version 1.0. |
| (http://www.boost.org/LICENSE_1_0.txt) |
| */ |
| #ifndef BOOST_IO_IOS_STATE_HPP |
| #define BOOST_IO_IOS_STATE_HPP |
| |
| #include <boost/config.hpp> |
| #include <boost/io_fwd.hpp> |
| #include <ios> |
| #ifndef BOOST_NO_STD_LOCALE |
| #include <locale> |
| #endif |
| #include <ostream> |
| #include <streambuf> |
| #include <string> |
| |
| namespace boost { |
| namespace io { |
| |
| class ios_flags_saver { |
| public: |
| typedef std::ios_base state_type; |
| typedef std::ios_base::fmtflags aspect_type; |
| |
| explicit ios_flags_saver(state_type& s) |
| : s_save_(s) |
| , a_save_(s.flags()) { } |
| |
| ios_flags_saver(state_type& s, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.flags(a)) { } |
| |
| ~ios_flags_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.flags(a_save_); |
| } |
| |
| private: |
| ios_flags_saver(const ios_flags_saver&); |
| ios_flags_saver& operator=(const ios_flags_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| }; |
| |
| class ios_precision_saver { |
| public: |
| typedef std::ios_base state_type; |
| typedef std::streamsize aspect_type; |
| |
| explicit ios_precision_saver(state_type& s) |
| : s_save_(s) |
| , a_save_(s.precision()) { } |
| |
| ios_precision_saver(state_type& s, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.precision(a)) { } |
| |
| ~ios_precision_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.precision(a_save_); |
| } |
| |
| private: |
| ios_precision_saver(const ios_precision_saver&); |
| ios_precision_saver& operator=(const ios_precision_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| }; |
| |
| class ios_width_saver { |
| public: |
| typedef std::ios_base state_type; |
| typedef std::streamsize aspect_type; |
| |
| explicit ios_width_saver(state_type& s) |
| : s_save_(s) |
| , a_save_(s.width()) { } |
| |
| ios_width_saver(state_type& s, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.width(a)) { } |
| |
| ~ios_width_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.width(a_save_); |
| } |
| |
| private: |
| ios_width_saver(const ios_width_saver&); |
| ios_width_saver& operator=(const ios_width_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| }; |
| |
| template<class Ch, class Tr> |
| class basic_ios_iostate_saver { |
| public: |
| typedef std::basic_ios<Ch, Tr> state_type; |
| typedef std::ios_base::iostate aspect_type; |
| |
| explicit basic_ios_iostate_saver(state_type& s) |
| : s_save_(s) |
| , a_save_(s.rdstate()) { } |
| |
| basic_ios_iostate_saver(state_type& s, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.rdstate()) { |
| s.clear(a); |
| } |
| |
| ~basic_ios_iostate_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.clear(a_save_); |
| } |
| |
| private: |
| basic_ios_iostate_saver(const basic_ios_iostate_saver&); |
| basic_ios_iostate_saver& operator=(const basic_ios_iostate_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| }; |
| |
| template<class Ch, class Tr> |
| class basic_ios_exception_saver { |
| public: |
| typedef std::basic_ios<Ch, Tr> state_type; |
| typedef std::ios_base::iostate aspect_type; |
| |
| explicit basic_ios_exception_saver(state_type& s) |
| : s_save_(s) |
| , a_save_(s.exceptions()) { } |
| |
| basic_ios_exception_saver(state_type& s, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.exceptions()) { |
| s.exceptions(a); |
| } |
| |
| ~basic_ios_exception_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.exceptions(a_save_); |
| } |
| |
| private: |
| basic_ios_exception_saver(const basic_ios_exception_saver&); |
| basic_ios_exception_saver& operator=(const basic_ios_exception_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| }; |
| |
| template<class Ch, class Tr> |
| class basic_ios_tie_saver { |
| public: |
| typedef std::basic_ios<Ch, Tr> state_type; |
| typedef std::basic_ostream<Ch, Tr>* aspect_type; |
| |
| explicit basic_ios_tie_saver(state_type& s) |
| : s_save_(s) |
| , a_save_(s.tie()) { } |
| |
| basic_ios_tie_saver(state_type& s, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.tie(a)) { } |
| |
| ~basic_ios_tie_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.tie(a_save_); |
| } |
| |
| private: |
| basic_ios_tie_saver(const basic_ios_tie_saver&); |
| basic_ios_tie_saver& operator=(const basic_ios_tie_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| }; |
| |
| template<class Ch, class Tr> |
| class basic_ios_rdbuf_saver { |
| public: |
| typedef std::basic_ios<Ch, Tr> state_type; |
| typedef std::basic_streambuf<Ch, Tr>* aspect_type; |
| |
| explicit basic_ios_rdbuf_saver(state_type& s) |
| : s_save_(s) |
| , a_save_(s.rdbuf()) { } |
| |
| basic_ios_rdbuf_saver(state_type& s, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.rdbuf(a)) { } |
| |
| ~basic_ios_rdbuf_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.rdbuf(a_save_); |
| } |
| |
| private: |
| basic_ios_rdbuf_saver(const basic_ios_rdbuf_saver&); |
| basic_ios_rdbuf_saver& operator=(const basic_ios_rdbuf_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| }; |
| |
| template<class Ch, class Tr> |
| class basic_ios_fill_saver { |
| public: |
| typedef std::basic_ios<Ch, Tr> state_type; |
| typedef typename state_type::char_type aspect_type; |
| |
| explicit basic_ios_fill_saver(state_type& s) |
| : s_save_(s) |
| , a_save_(s.fill()) { } |
| |
| basic_ios_fill_saver(state_type& s, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.fill(a)) { } |
| |
| ~basic_ios_fill_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.fill(a_save_); |
| } |
| |
| private: |
| basic_ios_fill_saver(const basic_ios_fill_saver&); |
| basic_ios_fill_saver& operator=(const basic_ios_fill_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| }; |
| |
| #ifndef BOOST_NO_STD_LOCALE |
| template<class Ch, class Tr> |
| class basic_ios_locale_saver { |
| public: |
| typedef std::basic_ios<Ch, Tr> state_type; |
| typedef std::locale aspect_type; |
| |
| explicit basic_ios_locale_saver(state_type& s) |
| : s_save_(s) |
| , a_save_(s.getloc()) { } |
| |
| basic_ios_locale_saver(state_type& s, const aspect_type& a) |
| : s_save_(s) |
| , a_save_(s.imbue(a)) { } |
| |
| ~basic_ios_locale_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.imbue(a_save_); |
| } |
| |
| private: |
| basic_ios_locale_saver(const basic_ios_locale_saver&); |
| basic_ios_locale_saver& operator=(const basic_ios_locale_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| }; |
| #endif |
| |
| class ios_iword_saver { |
| public: |
| typedef std::ios_base state_type; |
| typedef int index_type; |
| typedef long aspect_type; |
| |
| explicit ios_iword_saver(state_type& s, index_type i) |
| : s_save_(s) |
| , a_save_(s.iword(i)) |
| , i_save_(i) { } |
| |
| ios_iword_saver(state_type& s, index_type i, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.iword(i)) |
| , i_save_(i) { |
| s.iword(i) = a; |
| } |
| |
| ~ios_iword_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.iword(i_save_) = a_save_; |
| } |
| |
| private: |
| ios_iword_saver(const ios_iword_saver&); |
| ios_iword_saver& operator=(const ios_iword_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| index_type i_save_; |
| }; |
| |
| class ios_pword_saver { |
| public: |
| typedef std::ios_base state_type; |
| typedef int index_type; |
| typedef void* aspect_type; |
| |
| explicit ios_pword_saver(state_type& s, index_type i) |
| : s_save_(s) |
| , a_save_(s.pword(i)) |
| , i_save_(i) { } |
| |
| ios_pword_saver(state_type& s, index_type i, aspect_type a) |
| : s_save_(s) |
| , a_save_(s.pword(i)) |
| , i_save_(i) { |
| s.pword(i) = a; |
| } |
| |
| ~ios_pword_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.pword(i_save_) = a_save_; |
| } |
| |
| private: |
| ios_pword_saver(const ios_pword_saver&); |
| ios_pword_saver operator=(const ios_pword_saver&); |
| |
| state_type& s_save_; |
| aspect_type a_save_; |
| index_type i_save_; |
| }; |
| |
| class ios_base_all_saver { |
| public: |
| typedef std::ios_base state_type; |
| |
| explicit ios_base_all_saver(state_type& s) |
| : s_save_(s) |
| , a1_save_(s.flags()) |
| , a2_save_(s.precision()) |
| , a3_save_(s.width()) { } |
| |
| ~ios_base_all_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.width(a3_save_); |
| s_save_.precision(a2_save_); |
| s_save_.flags(a1_save_); |
| } |
| |
| private: |
| ios_base_all_saver(const ios_base_all_saver&); |
| ios_base_all_saver& operator=(const ios_base_all_saver&); |
| |
| state_type& s_save_; |
| state_type::fmtflags a1_save_; |
| std::streamsize a2_save_; |
| std::streamsize a3_save_; |
| }; |
| |
| template<class Ch, class Tr> |
| class basic_ios_all_saver { |
| public: |
| typedef std::basic_ios<Ch, Tr> state_type; |
| |
| explicit basic_ios_all_saver(state_type& s) |
| : s_save_(s) |
| , a1_save_(s.flags()) |
| , a2_save_(s.precision()) |
| , a3_save_(s.width()) |
| , a4_save_(s.rdstate()) |
| , a5_save_(s.exceptions()) |
| , a6_save_(s.tie()) |
| , a7_save_(s.rdbuf()) |
| , a8_save_(s.fill()) |
| #ifndef BOOST_NO_STD_LOCALE |
| , a9_save_(s.getloc()) |
| #endif |
| { } |
| |
| ~basic_ios_all_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| #ifndef BOOST_NO_STD_LOCALE |
| s_save_.imbue(a9_save_); |
| #endif |
| s_save_.fill(a8_save_); |
| s_save_.rdbuf(a7_save_); |
| s_save_.tie(a6_save_); |
| s_save_.exceptions(a5_save_); |
| s_save_.clear(a4_save_); |
| s_save_.width(a3_save_); |
| s_save_.precision(a2_save_); |
| s_save_.flags(a1_save_); |
| } |
| |
| private: |
| basic_ios_all_saver(const basic_ios_all_saver&); |
| basic_ios_all_saver& operator=(const basic_ios_all_saver&); |
| |
| state_type& s_save_; |
| typename state_type::fmtflags a1_save_; |
| std::streamsize a2_save_; |
| std::streamsize a3_save_; |
| typename state_type::iostate a4_save_; |
| typename state_type::iostate a5_save_; |
| std::basic_ostream<Ch, Tr>* a6_save_; |
| std::basic_streambuf<Ch, Tr>* a7_save_; |
| typename state_type::char_type a8_save_; |
| #ifndef BOOST_NO_STD_LOCALE |
| std::locale a9_save_; |
| #endif |
| }; |
| |
| class ios_all_word_saver { |
| public: |
| typedef std::ios_base state_type; |
| typedef int index_type; |
| |
| ios_all_word_saver(state_type& s, index_type i) |
| : s_save_(s) |
| , i_save_(i) |
| , a1_save_(s.iword(i)) |
| , a2_save_(s.pword(i)) { } |
| |
| ~ios_all_word_saver() { |
| this->restore(); |
| } |
| |
| void restore() { |
| s_save_.pword(i_save_) = a2_save_; |
| s_save_.iword(i_save_) = a1_save_; |
| } |
| |
| private: |
| ios_all_word_saver(const ios_all_word_saver&); |
| ios_all_word_saver& operator=(const ios_all_word_saver&); |
| |
| state_type& s_save_; |
| index_type i_save_; |
| long a1_save_; |
| void* a2_save_; |
| }; |
| |
| } /* io */ |
| } /* boost */ |
| |
| #endif |