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Sprout/sprout/detail/io/ios_state.hpp
bolero-MURAKAMI cb1077d247 add copyright
2013-08-08 18:54:33 +09:00

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/*=============================================================================
Copyright (c) 2011-2013 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_DETAIL_IO_IOS_STATE_HPP
#define SPROUT_DETAIL_IO_IOS_STATE_HPP
#include <string>
#include <ios>
#include <ostream>
#include <streambuf>
#include <locale>
#include <sprout/config.hpp>
#include <sprout/detail/io_fwd.hpp>
namespace sprout {
namespace detail {
namespace io {
class ios_flags_saver {
public:
typedef std::ios_base state_type;
typedef std::ios_base::fmtflags aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
private:
ios_flags_saver& operator=(ios_flags_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
explicit ios_flags_saver(state_type& s)
: s_save_(s)
, a_save_(s.flags())
{}
ios_flags_saver(state_type& s, aspect_type const& a)
: s_save_(s)
, a_save_(s.flags(a))
{}
~ios_flags_saver() {
this->restore();
}
void restore() {
s_save_.flags(a_save_);
}
};
class ios_precision_saver {
public:
typedef std::ios_base state_type;
typedef std::streamsize aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
private:
ios_precision_saver& operator=(ios_precision_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
explicit ios_precision_saver(state_type& s)
: s_save_(s)
, a_save_(s.precision())
{}
ios_precision_saver(state_type& s, aspect_type const& a)
: s_save_(s)
, a_save_(s.precision(a))
{}
~ios_precision_saver() {
this->restore();
}
void restore() {
s_save_.precision(a_save_);
}
};
class ios_width_saver {
public:
typedef std::ios_base state_type;
typedef std::streamsize aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
private:
ios_width_saver& operator=(ios_width_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
explicit ios_width_saver(state_type& s)
: s_save_(s)
, a_save_(s.width())
{}
ios_width_saver(state_type& s, aspect_type const& a)
: s_save_(s)
, a_save_(s.width(a))
{}
~ios_width_saver() {
this->restore();
}
void restore() {
s_save_.width(a_save_);
}
};
template<typename Elem, typename Traits>
class basic_ios_iostate_saver {
public:
typedef std::basic_ios<Elem, Traits> state_type;
typedef std::ios_base::iostate aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
private:
basic_ios_iostate_saver& operator=(basic_ios_iostate_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
explicit basic_ios_iostate_saver(state_type& s)
: s_save_(s)
, a_save_(s.rdstate())
{}
basic_ios_iostate_saver(state_type& s, aspect_type const& a)
: s_save_(s)
, a_save_(s.rdstate())
{
s.clear(a);
}
~basic_ios_iostate_saver() {
this->restore();
}
void restore() {
s_save_.clear(a_save_);
}
};
template<typename Elem, typename Traits>
class basic_ios_exception_saver {
public:
typedef std::basic_ios<Elem, Traits> state_type;
typedef std::ios_base::iostate aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
private:
basic_ios_exception_saver& operator=(basic_ios_exception_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
explicit basic_ios_exception_saver(state_type& s)
: s_save_(s)
, a_save_(s.exceptions())
{}
basic_ios_exception_saver(state_type& s, aspect_type const& a)
: s_save_(s)
, a_save_(s.exceptions())
{
s.exceptions(a);
}
~basic_ios_exception_saver() {
this->restore();
}
void restore() {
s_save_.exceptions(a_save_);
}
};
template<typename Elem, typename Traits>
class basic_ios_tie_saver {
public:
typedef std::basic_ios<Elem, Traits> state_type;
typedef std::basic_ostream<Elem, Traits>* aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
private:
basic_ios_tie_saver& operator=(basic_ios_tie_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
explicit basic_ios_tie_saver(state_type& s)
: s_save_(s)
, a_save_(s.tie())
{}
basic_ios_tie_saver(state_type& s, aspect_type const& a)
: s_save_(s)
, a_save_(s.tie(a))
{}
~basic_ios_tie_saver() {
this->restore();
}
void restore() {
s_save_.tie(a_save_);
}
};
template<typename Elem, typename Traits>
class basic_ios_rdbuf_saver {
public:
typedef std::basic_ios<Elem, Traits> state_type;
typedef std::basic_streambuf<Elem, Traits>* aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
private:
basic_ios_rdbuf_saver& operator=(basic_ios_rdbuf_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
explicit basic_ios_rdbuf_saver(state_type& s)
: s_save_(s)
, a_save_(s.rdbuf())
{}
basic_ios_rdbuf_saver(state_type& s, aspect_type const& a)
: s_save_(s)
, a_save_(s.rdbuf(a))
{}
~basic_ios_rdbuf_saver() {
this->restore();
}
void restore() {
s_save_.rdbuf(a_save_);
}
};
template<typename Elem, typename Traits>
class basic_ios_fill_saver {
public:
typedef std::basic_ios<Elem, Traits> state_type;
typedef typename state_type::char_type aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
private:
basic_ios_fill_saver& operator=(basic_ios_fill_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
explicit basic_ios_fill_saver(state_type& s)
: s_save_(s)
, a_save_(s.fill())
{}
basic_ios_fill_saver(state_type& s, aspect_type const& a)
: s_save_(s)
, a_save_(s.fill(a))
{}
~basic_ios_fill_saver() {
this->restore();
}
void restore() {
s_save_.fill(a_save_);
}
};
template<typename Elem, typename Traits>
class basic_ios_locale_saver {
public:
typedef std::basic_ios<Elem, Traits> state_type;
typedef std::locale aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
private:
basic_ios_locale_saver& operator=(basic_ios_locale_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
explicit basic_ios_locale_saver(state_type& s)
: s_save_(s)
, a_save_(s.getloc())
{}
basic_ios_locale_saver(state_type& s, aspect_type const& a)
: s_save_(s)
, a_save_(s.imbue(a))
{}
~basic_ios_locale_saver() {
this->restore();
}
void restore() {
s_save_.imbue(a_save_);
}
};
class ios_iword_saver {
public:
typedef std::ios_base state_type;
typedef int index_type;
typedef long aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
index_type const i_save_;
private:
ios_iword_saver& operator=(ios_iword_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
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 const& 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_;
}
};
class ios_pword_saver {
public:
typedef std::ios_base state_type;
typedef int index_type;
typedef void* aspect_type;
private:
state_type& s_save_;
aspect_type const a_save_;
index_type const i_save_;
private:
ios_pword_saver& operator=(ios_pword_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
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 const& 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_;
}
};
class ios_base_all_saver {
public:
typedef std::ios_base state_type;
private:
state_type& s_save_;
state_type::fmtflags const a1_save_;
std::streamsize const a2_save_;
std::streamsize const a3_save_;
private:
ios_base_all_saver& operator=(ios_base_all_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
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_);
}
};
template<typename Elem, typename Traits>
class basic_ios_all_saver {
public:
typedef std::basic_ios<Elem, Traits> state_type;
private:
state_type& s_save_;
typename state_type::fmtflags const a1_save_;
std::streamsize const a2_save_;
std::streamsize const a3_save_;
typename state_type::iostate const a4_save_;
typename state_type::iostate const a5_save_;
std::basic_ostream<Elem, Traits>* const a6_save_;
std::basic_streambuf<Elem, Traits>* const a7_save_;
typename state_type::char_type const a8_save_;
std::locale const a9_save_;
private:
basic_ios_all_saver& operator=(basic_ios_all_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
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())
, a9_save_(s.getloc())
{}
~basic_ios_all_saver() {
this->restore();
}
void restore() {
s_save_.imbue(a9_save_);
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_);
}
};
class ios_all_word_saver {
public:
typedef std::ios_base state_type;
typedef int index_type;
private:
state_type& s_save_;
index_type const i_save_;
long const a1_save_;
void* const a2_save_;
private:
ios_all_word_saver& operator=(ios_all_word_saver const&) SPROUT_DELETED_FUNCTION_DECL
public:
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_;
}
};
} // namespace io
} // namespace detail
} // namespace sprout
#endif // #ifndef SPROUT_DETAIL_IO_IOS_STATE_HPP
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