// String based streams -*- C++ -*-
-// Copyright (C) 1997, 1998, 1999, 2002, 2003, 2004
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// 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,
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
// As a special exception, you may use this file as part of a free software
//
/** @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.
+ * This is a Standard C++ Library header.
*/
#ifndef _GLIBCXX_SSTREAM
#include <istream>
#include <ostream>
-namespace std
-{
+_GLIBCXX_BEGIN_NAMESPACE(std)
+
// [27.7.1] template class basic_stringbuf
/**
* @brief The actual work of input and output (for std::string).
typedef typename traits_type::pos_type pos_type;
typedef typename traits_type::off_type off_type;
- //@{
- /**
- * @if maint
- * @doctodo
- * @endif
- */
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:
/**
ios_base::openmode _M_mode;
// Data Members:
- /**
- * @if maint
- * @doctodo
- * @endif
- */
__string_type _M_string;
public:
__string_type
str() const
{
+ __string_type __ret;
if (this->pptr())
{
// The current egptr() may not be the actual string end.
if (this->pptr() > this->egptr())
- return __string_type(this->pbase(), this->pptr());
+ __ret = __string_type(this->pbase(), this->pptr());
else
- return __string_type(this->pbase(), this->egptr());
+ __ret = __string_type(this->pbase(), this->egptr());
}
else
- return _M_string;
+ __ret = _M_string;
+ return __ret;
}
/**
{
// Cannot use _M_string = __s, since v3 strings are COW.
_M_string.assign(__s.data(), __s.size());
- _M_stringbuf_init(this->_M_mode);
+ _M_stringbuf_init(_M_mode);
}
protected:
// Common initialization code goes here.
- /**
- * @if maint
- * @doctodo
- * @endif
- */
void
_M_stringbuf_init(ios_base::openmode __mode)
{
- this->_M_mode = __mode;
-
+ _M_mode = __mode;
__size_type __len = 0;
- if (this->_M_mode & (ios_base::ate | ios_base::app))
+ if (_M_mode & (ios_base::ate | ios_base::app))
__len = _M_string.size();
_M_sync(const_cast<char_type*>(_M_string.data()), 0, __len);
}
- // [documentation is inherited]
+ virtual streamsize
+ showmanyc()
+ {
+ streamsize __ret = -1;
+ if (_M_mode & ios_base::in)
+ {
+ _M_update_egptr();
+ __ret = this->egptr() - this->gptr();
+ }
+ return __ret;
+ }
+
virtual int_type
underflow();
- // [documentation is inherited]
virtual int_type
pbackfail(int_type __c = traits_type::eof());
- // [documentation is inherited]
virtual int_type
overflow(int_type __c = traits_type::eof());
// things will quickly blow up.
// Step 1: Destroy the current internal array.
- _M_string.assign(__s, __n);
+ _M_string.clear();
// Step 2: Use the external array.
- _M_sync(__s, 0, 0);
+ _M_sync(__s, __n, 0);
}
return this;
}
- // [documentation is inherited]
virtual pos_type
seekoff(off_type __off, ios_base::seekdir __way,
ios_base::openmode __mode = ios_base::in | ios_base::out);
- // [documentation is inherited]
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
- /**
- * @if maint
- * @doctodo
- * @endif
- */
+ // for a particular _M_string, due to initialization or re-sizing
+ // of an existing _M_string.
void
- _M_sync(char_type* __base, __size_type __i, __size_type __o)
- {
- const bool __testin = this->_M_mode & ios_base::in;
- const bool __testout = this->_M_mode & ios_base::out;
- char_type* __end = __base + _M_string.size();
-
- if (__testin)
- this->setg(__base, __base + __i, __end);
- if (__testout)
- {
- // If __base comes from setbuf we cannot trust capacity()
- // to match the size of the buffer area: in general, after
- // Step 1 above, _M_string.capacity() >= __n.
- if (__base == _M_string.data())
- this->setp(__base, __base + _M_string.capacity());
- else
- this->setp(__base, __end);
- this->pbump(__o);
- // egptr() always tracks the string end. When !__testin,
- // for the correct functioning of the streambuf inlines
- // the other get area pointers are identical.
- if (!__testin)
- this->setg(__end, __end, __end);
- }
- }
+ _M_sync(char_type* __base, __size_type __i, __size_type __o);
// Internal function for correctly updating egptr() to the actual
// string end.
void
_M_update_egptr()
{
- const bool __testin = this->_M_mode & ios_base::in;
-
+ const bool __testin = _M_mode & ios_base::in;
if (this->pptr() && this->pptr() > this->egptr())
if (__testin)
this->setg(this->eback(), this->gptr(), this->pptr());
typedef basic_istream<char_type, traits_type> __istream_type;
private:
- /**
- * @if maint
- * @doctodo
- * @endif
- */
__stringbuf_type _M_stringbuf;
public:
typedef basic_ostream<char_type, traits_type> __ostream_type;
private:
- /**
- * @if maint
- * @doctodo
- * @endif
- */
__stringbuf_type _M_stringbuf;
public:
typedef basic_iostream<char_type, traits_type> __iostream_type;
private:
- /**
- * @if maint
- * @doctodo
- * @endif
- */
__stringbuf_type _M_stringbuf;
public:
str(const __string_type& __s)
{ _M_stringbuf.str(__s); }
};
-} // namespace std
+
+_GLIBCXX_END_NAMESPACE
#ifndef _GLIBCXX_EXPORT_TEMPLATE
# include <bits/sstream.tcc>
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