+++ /dev/null
-// String based streams -*- C++ -*-
-
-// Copyright (C) 1997, 1998, 1999, 2002 Free Software Foundation, Inc.
-//
-// This file is part of the GNU ISO C++ Library. This library is free
-// software; you can redistribute it and/or modify it under the
-// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 2, or (at your option)
-// any later version.
-
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
-
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
-
-//
-// ISO C++ 14882: 27.7 String-based streams
-//
-
-/** @file sstream
- * This is a Standard C++ Library header. You should @c #include this header
- * in your programs, rather than any of the "st[dl]_*.h" implementation files.
- */
-
-#ifndef _CPP_SSTREAM
-#define _CPP_SSTREAM 1
-
-#pragma GCC system_header
-
-#include <istream>
-#include <ostream>
-
-namespace std
-{
- template<typename _CharT, typename _Traits, typename _Alloc>
- class basic_stringbuf : public basic_streambuf<_CharT, _Traits>
- {
- public:
- // Types:
- typedef _CharT char_type;
- typedef _Traits traits_type;
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
-// 251. basic_stringbuf missing allocator_type
- typedef _Alloc allocator_type;
-#endif
- typedef typename traits_type::int_type int_type;
- typedef typename traits_type::pos_type pos_type;
- typedef typename traits_type::off_type off_type;
-
- // Non-standard Types:
- typedef basic_streambuf<char_type, traits_type> __streambuf_type;
- typedef basic_string<char_type, _Traits, _Alloc> __string_type;
- typedef typename __string_type::size_type __size_type;
-
- protected:
- // Data Members:
- __string_type _M_string;
-
- public:
- // Constructors:
- explicit
- basic_stringbuf(ios_base::openmode __mode = ios_base::in | ios_base::out)
- : __streambuf_type(), _M_string()
- { _M_stringbuf_init(__mode); }
-
- explicit
- basic_stringbuf(const __string_type& __str,
- ios_base::openmode __mode = ios_base::in | ios_base::out)
- : __streambuf_type(), _M_string(__str.data(), __str.size())
- { _M_stringbuf_init(__mode); }
-
- // Get and set:
- __string_type
- str() const
- {
- if (_M_mode & ios_base::out)
- {
- // This is the deal: _M_string.size() is a value that
- // represents the size of the initial string that makes
- // _M_string, and may not be the correct size of the
- // current stringbuf internal buffer.
- __size_type __len = _M_string.size();
- if (_M_out_cur > _M_out_beg)
- __len = max(__size_type(_M_out_end - _M_out_beg), __len);
- return __string_type(_M_out_beg, _M_out_beg + __len);
- }
- else
- return _M_string;
- }
-
- void
- str(const __string_type& __s)
- {
- // Cannot use _M_string = __s, since v3 strings are COW.
- _M_string.assign(__s.data(), __s.size());
- _M_stringbuf_init(_M_mode);
- }
-
- protected:
- // Common initialization code for both ctors goes here.
- void
- _M_stringbuf_init(ios_base::openmode __mode)
- {
- // _M_buf_size is a convenient alias for "what the streambuf
- // thinks the allocated size of the string really is." This is
- // necessary as ostringstreams are implemented with the
- // streambufs having control of the allocation and
- // re-allocation of the internal string object, _M_string.
- _M_buf_size = _M_string.size();
-
- // NB: Start ostringstream buffers at 512 bytes. This is an
- // experimental value (pronounced "arbitrary" in some of the
- // hipper english-speaking countries), and can be changed to
- // suit particular needs.
- _M_buf_size_opt = 512;
- _M_mode = __mode;
- if (_M_mode & (ios_base::ate | ios_base::app))
- _M_really_sync(0, _M_buf_size);
- else
- _M_really_sync(0, 0);
- }
-
- // Overridden virtual functions:
- virtual int_type
- underflow()
- {
- if (_M_in_cur && _M_in_cur < _M_in_end)
- return traits_type::to_int_type(*gptr());
- else
- return traits_type::eof();
- }
-
- virtual int_type
- pbackfail(int_type __c = traits_type::eof());
-
- virtual int_type
- overflow(int_type __c = traits_type::eof());
-
- virtual __streambuf_type*
- setbuf(char_type* __s, streamsize __n)
- {
- if (__s && __n)
- {
- _M_string = __string_type(__s, __n);
- _M_really_sync(0, 0);
- }
- return this;
- }
-
- virtual pos_type
- seekoff(off_type __off, ios_base::seekdir __way,
- ios_base::openmode __mode = ios_base::in | ios_base::out);
-
- virtual pos_type
- seekpos(pos_type __sp,
- ios_base::openmode __mode = ios_base::in | ios_base::out);
-
- // Internal function for correctly updating the internal buffer
- // for a particular _M_string, due to initialization or
- // re-sizing of an existing _M_string.
- // Assumes: contents of _M_string and internal buffer match exactly.
- // __i == _M_in_cur - _M_in_beg
- // __o == _M_out_cur - _M_out_beg
- virtual int
- _M_really_sync(__size_type __i, __size_type __o)
- {
- char_type* __base = const_cast<char_type*>(_M_string.data());
- bool __testin = _M_mode & ios_base::in;
- bool __testout = _M_mode & ios_base::out;
- __size_type __len = _M_string.size();
-
- _M_buf = __base;
- if (__testin)
- this->setg(__base, __base + __i, __base + __len);
- if (__testout)
- {
- this->setp(__base, __base + __len);
- _M_out_cur += __o;
- }
- return 0;
- }
- };
-
-
- // 27.7.2 Template class basic_istringstream
- template<typename _CharT, typename _Traits, typename _Alloc>
- class basic_istringstream : public basic_istream<_CharT, _Traits>
- {
- public:
- // Types:
- typedef _CharT char_type;
- typedef _Traits traits_type;
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
-// 251. basic_stringbuf missing allocator_type
- typedef _Alloc allocator_type;
-#endif
- typedef typename traits_type::int_type int_type;
- typedef typename traits_type::pos_type pos_type;
- typedef typename traits_type::off_type off_type;
-
- // Non-standard types:
- typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
- typedef basic_stringbuf<_CharT, _Traits, _Alloc> __stringbuf_type;
- typedef basic_istream<char_type, traits_type> __istream_type;
-
- private:
- __stringbuf_type _M_stringbuf;
-
- public:
- // Constructors:
- explicit
- basic_istringstream(ios_base::openmode __mode = ios_base::in)
- : __istream_type(NULL), _M_stringbuf(__mode | ios_base::in)
- { this->init(&_M_stringbuf); }
-
- explicit
- basic_istringstream(const __string_type& __str,
- ios_base::openmode __mode = ios_base::in)
- : __istream_type(NULL), _M_stringbuf(__str, __mode | ios_base::in)
- { this->init(&_M_stringbuf); }
-
- ~basic_istringstream()
- { }
-
- // Members:
- __stringbuf_type*
- rdbuf() const
- { return const_cast<__stringbuf_type*>(&_M_stringbuf); }
-
- __string_type
- str() const
- { return _M_stringbuf.str(); }
-
- void
- str(const __string_type& __s)
- { _M_stringbuf.str(__s); }
- };
-
-
- // 27.7.3 Template class basic_ostringstream
- template <typename _CharT, typename _Traits, typename _Alloc>
- class basic_ostringstream : public basic_ostream<_CharT, _Traits>
- {
- public:
- // Types:
- typedef _CharT char_type;
- typedef _Traits traits_type;
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
-// 251. basic_stringbuf missing allocator_type
- typedef _Alloc allocator_type;
-#endif
- typedef typename traits_type::int_type int_type;
- typedef typename traits_type::pos_type pos_type;
- typedef typename traits_type::off_type off_type;
-
- // Non-standard types:
- typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
- typedef basic_stringbuf<_CharT, _Traits, _Alloc> __stringbuf_type;
- typedef basic_ostream<char_type, traits_type> __ostream_type;
-
- private:
- __stringbuf_type _M_stringbuf;
-
- public:
- // Constructors/destructor:
- explicit
- basic_ostringstream(ios_base::openmode __mode = ios_base::out)
- : __ostream_type(NULL), _M_stringbuf(__mode | ios_base::out)
- { this->init(&_M_stringbuf); }
-
- explicit
- basic_ostringstream(const __string_type& __str,
- ios_base::openmode __mode = ios_base::out)
- : __ostream_type(NULL), _M_stringbuf(__str, __mode | ios_base::out)
- { this->init(&_M_stringbuf); }
-
- ~basic_ostringstream()
- { }
-
- // Members:
- __stringbuf_type*
- rdbuf() const
- { return const_cast<__stringbuf_type*>(&_M_stringbuf); }
-
- __string_type
- str() const
- { return _M_stringbuf.str(); }
-
- void
- str(const __string_type& __s)
- { _M_stringbuf.str(__s); }
- };
-
-
- // 27.7.4 Template class basic_stringstream
- template <typename _CharT, typename _Traits, typename _Alloc>
- class basic_stringstream : public basic_iostream<_CharT, _Traits>
- {
- public:
- // Types:
- typedef _CharT char_type;
- typedef _Traits traits_type;
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
-// 251. basic_stringbuf missing allocator_type
- typedef _Alloc allocator_type;
-#endif
- typedef typename traits_type::int_type int_type;
- typedef typename traits_type::pos_type pos_type;
- typedef typename traits_type::off_type off_type;
-
- // Non-standard Types:
- typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
- typedef basic_stringbuf<_CharT, _Traits, _Alloc> __stringbuf_type;
- typedef basic_iostream<char_type, traits_type> __iostream_type;
-
- private:
- __stringbuf_type _M_stringbuf;
-
- public:
- // Constructors/destructors
- explicit
- basic_stringstream(ios_base::openmode __m = ios_base::out | ios_base::in)
- : __iostream_type(NULL), _M_stringbuf(__m)
- { this->init(&_M_stringbuf); }
-
- explicit
- basic_stringstream(const __string_type& __str,
- ios_base::openmode __m = ios_base::out | ios_base::in)
- : __iostream_type(NULL), _M_stringbuf(__str, __m)
- { this->init(&_M_stringbuf); }
-
- ~basic_stringstream()
- { }
-
- // Members:
- __stringbuf_type*
- rdbuf() const
- { return const_cast<__stringbuf_type*>(&_M_stringbuf); }
-
- __string_type
- str() const
- { return _M_stringbuf.str(); }
-
- void
- str(const __string_type& __s)
- { _M_stringbuf.str(__s); }
- };
-} // namespace std
-
-#ifdef _GLIBCPP_NO_TEMPLATE_EXPORT
-# define export
-#endif
-#ifdef _GLIBCPP_FULLY_COMPLIANT_HEADERS
-# include <bits/sstream.tcc>
-#endif
-
-#endif
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