#include <_strstream.h>

Inheritance diagram for strstreambuf:

Collaboration diagram for strstreambuf:

[legend]

Public Types
typedef char_traits< char >	_Traits

typedef basic_streambuf< char, char_traits< char > >	_Base

typedef void (	__alloc_fn) (size_t)

typedef void(*	__free_fn) (void *)

Public Types inherited from basic_streambuf< char, char_traits< char > >
typedef char	char_type

typedef _Traits::int_type	int_type

typedef _Traits::pos_type	pos_type

typedef _Traits::off_type	off_type

typedef char_traits< char >	traits_type

Public Member Functions
	strstreambuf (streamsize _Initial_capacity=0)

	strstreambuf (__alloc_fn, __free_fn)

	strstreambuf (char __get, streamsize __n, char __put=0)

	strstreambuf (signed char __get, streamsize __n, signed char __put=0)

	strstreambuf (unsigned char __get, streamsize __n, unsigned char __put=0)

	strstreambuf (const char *__get, streamsize __n)

	strstreambuf (const signed char *__get, streamsize __n)

	strstreambuf (const unsigned char *__get, streamsize __n)

virtual	~strstreambuf ()

void	freeze (bool=true)

char *	str ()

int	pcount () const

Public Member Functions inherited from basic_streambuf< char, char_traits< char > >
virtual	~basic_streambuf ()

char_type *	_M_eback () const

char_type *	_M_gptr () const

char_type *	_M_egptr () const

void	_M_gbump (int __n)

void	_M_setg (char_type __gbegin, char_type __gnext, char_type *__gend)

basic_streambuf< char, char_traits< char > > *	pubsetbuf (char_type *__s, streamsize __n)

pos_type	pubseekoff (off_type __offset, ios_base::seekdir __way, ios_base::openmode __mod=ios_base::in\|ios_base::out)

pos_type	pubseekpos (pos_type __sp, ios_base::openmode __mod=ios_base::in\|ios_base::out)

int	pubsync ()

int_type	sputc (char_type __c)

streamsize	sputn (const char_type *__s, streamsize __n)

streamsize	_M_sputnc (char_type __c, streamsize __n)

streamsize	in_avail ()

int_type	snextc ()

int_type	sbumpc ()

int_type	sgetc ()

streamsize	sgetn (char_type *__s, streamsize __n)

int_type	sputbackc (char_type __c)

int_type	sungetc ()

locale	pubimbue (const locale &)

locale	getloc () const

void	stossc ()

Protected Member Functions
virtual int_type	overflow (int_type __c=_Traits::eof())

virtual int_type	pbackfail (int_type __c=_Traits::eof())

virtual int_type	underflow ()

virtual _Base *	setbuf (char *__buf, streamsize __n)

virtual pos_type	seekoff (off_type __off, ios_base::seekdir __dir, ios_base::openmode __mode=ios_base::in\|ios_base::out)

virtual pos_type	seekpos (pos_type __pos, ios_base::openmode __mode=ios_base::in\|ios_base::out)

Protected Member Functions inherited from basic_streambuf< char, char_traits< char > >
	basic_streambuf ()

char_type *	eback () const

char_type *	gptr () const

char_type *	egptr () const

void	gbump (int __n)

void	setg (char_type __gbegin, char_type __gnext, char_type *__gend)

char_type *	pbase () const

char_type *	pptr () const

char_type *	epptr () const

void	pbump (int __n)

void	setp (char_type __pbegin, char_type __pend)

virtual basic_streambuf< char, char_traits< char > > *	setbuf (char_type *, streamsize)

virtual pos_type	seekoff (off_type, ios_base::seekdir, ios_base::openmode=ios_base::in\|ios_base::out)

virtual pos_type	seekpos (pos_type, ios_base::openmode=ios_base::in\|ios_base::out)

virtual int	sync ()

virtual streamsize	showmanyc ()

virtual streamsize	xsgetn (char_type *__s, streamsize __n)

virtual int_type	underflow ()

virtual int_type	uflow ()

virtual int_type	pbackfail (int_type=traits_type::eof())

virtual streamsize	xsputn (const char_type *__s, streamsize __n)

virtual streamsize	_M_xsputnc (char_type __c, streamsize __n)

virtual int_type	overflow (int_type=traits_type::eof())

virtual void	imbue (const locale &)

Private Member Functions
char *	_M_alloc (size_t)

void	_M_free (char *)

void	_M_setup (char __get, char __put, streamsize __n)

Private Attributes
__alloc_fn	_M_alloc_fun

__free_fn	_M_free_fun

bool	_M_dynamic: 1

bool	_M_frozen: 1

bool	_M_constant: 1

Detailed Description

Definition at line 46 of file _strstream.h.

Member Typedef Documentation

◆ __alloc_fn

typedef void *(* strstreambuf::__alloc_fn) (size_t)

Definition at line 50 of file _strstream.h.

◆ __free_fn

typedef void(* strstreambuf::__free_fn) (void *)

Definition at line 51 of file _strstream.h.

◆ _Base

typedef basic_streambuf<char, char_traits<char> > strstreambuf::_Base

Definition at line 49 of file _strstream.h.

◆ _Traits

typedef char_traits<char> strstreambuf::_Traits

Definition at line 48 of file _strstream.h.

Constructor & Destructor Documentation

◆ strstreambuf() [1/8]

_STLP_BEGIN_NAMESPACE strstreambuf::strstreambuf ( streamsize _Initial_capacity = 0 )

explicit

Definition at line 34 of file strstream.cpp.

   : _M_alloc_fun(0), _M_free_fun(0),
     _M_dynamic(true), _M_frozen(false), _M_constant(false) {
  size_t n = (sizeof(streamsize) > sizeof(size_t)) ? __STATIC_CAST(size_t, (min)(__STATIC_CAST(streamsize, (numeric_limits<size_t>::max)()),
                                                                                 (max)(initial_capacity, streamsize(16))))
                                                   : __STATIC_CAST(size_t, (max)(initial_capacity, streamsize(16)));
 
  char* buf = _M_alloc(n);
  if (buf) {
    setp(buf, buf + n);
    setg(buf, buf, buf);
  }
}

◆ strstreambuf() [2/8]

strstreambuf::strstreambuf	(	__alloc_fn	alloc_f,
		__free_fn	free_f
	)

Definition at line 48 of file strstream.cpp.

  : _M_alloc_fun(alloc_f), _M_free_fun(free_f),
    _M_dynamic(true), _M_frozen(false), _M_constant(false) {
  size_t n = 16;
 
  char* buf = _M_alloc(n);
  if (buf) {
    setp(buf, buf + n);
    setg(buf, buf, buf);
  }
}

◆ strstreambuf() [3/8]

strstreambuf::strstreambuf	(	char *	__get,
		streamsize	__n,
		char *	__put = `0`
	)

Definition at line 60 of file strstream.cpp.

  : _M_alloc_fun(0), _M_free_fun(0),
    _M_dynamic(false), _M_frozen(false), _M_constant(false) {
  _M_setup(get, put, n);
}

◆ strstreambuf() [4/8]

strstreambuf::strstreambuf	(	signed char *	__get,
		streamsize	__n,
		signed char *	__put = `0`
	)

Definition at line 66 of file strstream.cpp.

  : _M_alloc_fun(0), _M_free_fun(0),
    _M_dynamic(false), _M_frozen(false), _M_constant(false) {
  _M_setup(__REINTERPRET_CAST(char*,get), __REINTERPRET_CAST(char*,put), n);
}

◆ strstreambuf() [5/8]

strstreambuf::strstreambuf	(	unsigned char *	__get,
		streamsize	__n,
		unsigned char *	__put = `0`
	)

Definition at line 72 of file strstream.cpp.

  : _M_alloc_fun(0), _M_free_fun(0),
    _M_dynamic(false), _M_frozen(false), _M_constant(false) {
  _M_setup(__REINTERPRET_CAST(char*,get), __REINTERPRET_CAST(char*,put), n);
}

◆ strstreambuf() [6/8]

strstreambuf::strstreambuf	(	const char *	__get,
		streamsize	__n
	)

Definition at line 79 of file strstream.cpp.

  : _M_alloc_fun(0), _M_free_fun(0),
    _M_dynamic(false), _M_frozen(false), _M_constant(true) {
  _M_setup(__CONST_CAST(char*,get), 0, n);
}

◆ strstreambuf() [7/8]

strstreambuf::strstreambuf	(	const signed char *	__get,
		streamsize	__n
	)

Definition at line 85 of file strstream.cpp.

  : _M_alloc_fun(0), _M_free_fun(0),
    _M_dynamic(false), _M_frozen(false), _M_constant(true) {
  _M_setup(__REINTERPRET_CAST(char*, __CONST_CAST(signed char*,get)), 0, n);
}

◆ strstreambuf() [8/8]

strstreambuf::strstreambuf	(	const unsigned char *	__get,
		streamsize	__n
	)

Definition at line 91 of file strstream.cpp.

  : _M_alloc_fun(0), _M_free_fun(0),
    _M_dynamic(false), _M_frozen(false), _M_constant(true) {
  _M_setup(__REINTERPRET_CAST(char*, __CONST_CAST(unsigned char*,get)), 0, n);
}

◆ ~strstreambuf()

strstreambuf::~strstreambuf ( )

virtual

Definition at line 97 of file strstream.cpp.

                            {
  if (_M_dynamic && !_M_frozen)
    _M_free(eback());
}

Member Function Documentation

◆ _M_alloc()

char * strstreambuf::_M_alloc ( size_t n )

private

Definition at line 261 of file strstream.cpp.

                                     {
  if (_M_alloc_fun)
    return __STATIC_CAST(char*,_M_alloc_fun(n));
  else
    return new char[n];
}

Referenced by overflow(), and strstreambuf().

◆ _M_free()

void strstreambuf::_M_free ( char * p )

private

Definition at line 268 of file strstream.cpp.

                                  {
  if (p) {
    if (_M_free_fun)
      _M_free_fun(p);
    else
      delete[] p;
  }
}

Referenced by overflow(), and ~strstreambuf().

◆ _M_setup()

void strstreambuf::_M_setup	(	char *	__get,
		char *	__put,
		streamsize	__n
	)

private

Definition at line 277 of file strstream.cpp.

                                                              {
  if (get) {
    size_t N = n > 0 ? size_t(n) : n == 0 ? strlen(get) : size_t(INT_MAX);
 
    if (put) {
      setg(get, get, get + N);
      setp(put, put + N);
    }
    else {
      setg(get, get, get + N);
    }
  }
}

Referenced by strstreambuf().

◆ freeze()

void strstreambuf::freeze ( bool frozenflag = true )

Definition at line 102 of file strstream.cpp.

                                         {
  if (_M_dynamic)
    _M_frozen = frozenflag;
}

Referenced by ostrstream::freeze(), strstream::freeze(), and str().

◆ overflow()

strstreambuf::int_type strstreambuf::overflow ( int_type __c = _Traits::eof() )

protectedvirtual

Definition at line 116 of file strstream.cpp.

                                                      {
  if (c == traits_type::eof())
    return traits_type::not_eof(c);
 
  // Try to expand the buffer.
  if (pptr() == epptr() && _M_dynamic && !_M_frozen && !_M_constant) {
    ptrdiff_t old_size = epptr() - pbase();
    ptrdiff_t new_size = (max)(2 * old_size, ptrdiff_t(1));
 
    char* buf = _M_alloc(new_size);
    if (buf) {
      memcpy(buf, pbase(), old_size);
 
      char* old_buffer = pbase();
      bool reposition_get = false;
      ptrdiff_t old_get_offset;
      if (gptr() != 0) {
        reposition_get = true;
        old_get_offset = gptr() - eback();
      }
 
      setp(buf, buf + new_size);
      pbump((int)old_size);
 
      if (reposition_get)
        setg(buf, buf + old_get_offset, buf + (max)(old_get_offset, old_size));
 
      _M_free(old_buffer);
    }
  }
 
  if (pptr() != epptr()) {
    *pptr() = traits_type::to_char_type(c);
    pbump(1);
    return c;
  }
  else
    return traits_type::eof();
}

◆ pbackfail()

strstreambuf::int_type strstreambuf::pbackfail ( int_type __c = _Traits::eof() )

protectedvirtual

Definition at line 156 of file strstream.cpp.

                                                       {
  if (gptr() != eback()) {
    if (c == traits_type::eof()) {
      gbump(-1);
      return traits_type::not_eof(c);
    }
    else if (c == gptr()[-1]) {
      gbump(-1);
      return c;
    }
    else if (!_M_constant) {
      gbump(-1);
      *gptr() = traits_type::to_char_type(c);
      return c;
    }
  }
 
  return traits_type::eof();
}

◆ pcount()

int strstreambuf::pcount ( ) const

Definition at line 112 of file strstream.cpp.

                               {
  return int(pptr() ? pptr() - pbase() : 0);
}

Referenced by ostrstream::pcount(), and strstream::pcount().

◆ seekoff()

strstreambuf::pos_type strstreambuf::seekoff	(	off_type	__off,
		ios_base::seekdir	__dir,
		ios_base::openmode	__mode = `ios_base::in \| ios_base::out`
	)

protectedvirtual

Definition at line 192 of file strstream.cpp.

                                                                  {
  bool do_get = false;
  bool do_put = false;
 
  if ((mode & (ios_base::in | ios_base::out)) ==
          (ios_base::in | ios_base::out) &&
      (dir == ios_base::beg || dir == ios_base::end))
    do_get = do_put = true;
  else if (mode & ios_base::in)
    do_get = true;
  else if (mode & ios_base::out)
    do_put = true;
 
  // !gptr() is here because, according to D.7.1 paragraph 4, the seekable
  // area is undefined if there is no get area.
  if ((!do_get && !do_put) || (do_put && !pptr()) || !gptr())
    return pos_type(off_type(-1));
 
  char* seeklow  = eback();
  char* seekhigh = epptr() ? epptr() : egptr();
 
  off_type newoff;
  switch(dir) {
  case ios_base::beg:
    newoff = 0;
    break;
  case ios_base::end:
    newoff = seekhigh - seeklow;
    break;
  case ios_base::cur:
    newoff = do_put ? pptr() - seeklow : gptr() - seeklow;
    break;
  default:
    return pos_type(off_type(-1));
  }
 
  off += newoff;
  if (off < 0 || off > seekhigh - seeklow)
    return pos_type(off_type(-1));
 
  if (do_put) {
    if (seeklow + __STATIC_CAST(ptrdiff_t, off) < pbase()) {
      setp(seeklow, epptr());
      pbump((int)off);
    }
    else {
      setp(pbase(), epptr());
      pbump((int)(off - (pbase() - seeklow)));
    }
  }
  if (do_get) {
    if (off <= egptr() - seeklow)
      setg(seeklow, seeklow + __STATIC_CAST(ptrdiff_t, off), egptr());
    else if (off <= pptr() - seeklow)
      setg(seeklow, seeklow + __STATIC_CAST(ptrdiff_t, off), pptr());
    else
      setg(seeklow, seeklow + __STATIC_CAST(ptrdiff_t, off), epptr());
  }
 
  return pos_type(newoff);
}

Referenced by seekpos().

◆ seekpos()

strstreambuf::pos_type strstreambuf::seekpos	(	pos_type	__pos,
		ios_base::openmode	__mode = `ios_base::in \| ios_base::out`
	)

protectedvirtual

Definition at line 256 of file strstream.cpp.

                                                         {
  return seekoff(pos - pos_type(off_type(0)), ios_base::beg, mode);
}

◆ setbuf()

basic_streambuf< char, char_traits< char > > * strstreambuf::setbuf	(	char *	__buf,
		streamsize	__n
	)

protectedvirtual

Definition at line 187 of file strstream.cpp.

                                      {
  return this;
}

◆ str()

char * strstreambuf::str ( )

Definition at line 107 of file strstream.cpp.

                        {
  freeze(true);
  return eback();
}

Referenced by istrstream::str(), ostrstream::str(), and strstream::str().

◆ underflow()

strstreambuf::int_type strstreambuf::underflow ( )

protectedvirtual

Reimplemented from basic_streambuf< char, char_traits< char > >.

Definition at line 176 of file strstream.cpp.

                                             {
  if (gptr() == egptr() && pptr() && pptr() > egptr())
    setg(eback(), gptr(), pptr());
 
  if (gptr() != egptr())
    return (unsigned char) *gptr();
  else
    return _Traits::eof();
}

Member Data Documentation

◆ _M_alloc_fun

__alloc_fn strstreambuf::_M_alloc_fun

private

Definition at line 92 of file _strstream.h.

Referenced by _M_alloc().

◆ _M_constant

bool strstreambuf::_M_constant

private

Definition at line 96 of file _strstream.h.

Referenced by overflow(), and pbackfail().

◆ _M_dynamic

bool strstreambuf::_M_dynamic

private

Definition at line 94 of file _strstream.h.

Referenced by freeze(), overflow(), and ~strstreambuf().

◆ _M_free_fun

__free_fn strstreambuf::_M_free_fun

private

Definition at line 93 of file _strstream.h.

Referenced by _M_free().

◆ _M_frozen

bool strstreambuf::_M_frozen

private

Definition at line 95 of file _strstream.h.

Referenced by freeze(), overflow(), and ~strstreambuf().

The documentation for this class was generated from the following files:

sdk/include/c++/stlport/stl/_strstream.h
sdk/lib/3rdparty/stlport/src/strstream.cpp

Public Types

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ __alloc_fn

◆ __free_fn

◆ _Base

◆ _Traits

Constructor & Destructor Documentation

◆ strstreambuf() [1/8]

◆ strstreambuf() [2/8]

◆ strstreambuf() [3/8]

◆ strstreambuf() [4/8]

◆ strstreambuf() [5/8]

◆ strstreambuf() [6/8]

◆ strstreambuf() [7/8]

◆ strstreambuf() [8/8]

◆ ~strstreambuf()

Member Function Documentation

◆ _M_alloc()

◆ _M_free()

◆ _M_setup()

◆ freeze()

◆ overflow()

◆ pbackfail()

◆ pcount()

◆ seekoff()

◆ seekpos()

◆ setbuf()

◆ str()

◆ underflow()

Member Data Documentation

◆ _M_alloc_fun

◆ _M_constant

◆ _M_dynamic

◆ _M_free_fun

◆ _M_frozen