forked from KolibriOS/kolibrios
368 lines
11 KiB
C
368 lines
11 KiB
C
|
// String based streams -*- C++ -*-
|
||
|
|
|
||
|
|
// Copyright (C) 1997-1999 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
|
||
|
|
//
|
||
|
|
|
||
|
|
#ifndef _CPP_SSTREAM
|
||
|
|
#define _CPP_SSTREAM 1
|
||
|
|
|
||
|
|
#pragma GCC system_header
|
||
|
|
|
||
|
|
#include <bits/std_istream.h>
|
||
|
|
#include <bits/std_ostream.h>
|
||
|
|
|
||
|
|
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;
|
||
|
|
|
||
|
|
private:
|
||
|
|
// 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.c_str())
|
||
|
|
{ _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 value that
|
||
|
|
// represents the size of the intial 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)
|
||
|
|
{
|
||
|
|
_M_string = __s;
|
||
|
|
_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 1024 bytes. This is an
|
||
|
|
// experimental value (pronounced "arbitrary" in some of the
|
||
|
|
// hipper english-speaking countries), and can be changed to
|
||
|
|
// suite particular needs.
|
||
|
|
_M_buf_size_opt = 512;
|
||
|
|
_M_mode = __mode;
|
||
|
|
if (_M_mode & ios_base::ate)
|
||
|
|
_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
|
||
|
|
#ifdef _GLIBCPP_FULLY_COMPLIANT_HEADERS
|
||
|
|
# include <bits/sstream.tcc>
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif // _CPP_SSTREAM
|