std::basic_ios< CharT, Traits > Class Template Reference

Virtual base class for all stream classes. More...

#include <basic_ios.h>

Inheritance diagram for std::basic_ios< CharT, Traits >:

Inheritance graph
[legend]
Collaboration diagram for std::basic_ios< CharT, Traits >:

Collaboration graph
[legend]

List of all members.

Public Types

enum  event
typedef IosFmtflags fmtflags
 This is a bitmask type.
typedef IosIostate iostate
 This is a bitmask type.
typedef IosOpenmode openmode
 This is a bitmask type.
typedef IosSeekdir seekdir
 This is an enumerated type.
typedef void(* event_callback )(event, ios_base &, int)
typedef CharT char_type
typedef Traits::int_type int_type
typedef Traits::pos_type pos_type
typedef Traits::off_type off_type
typedef Traits traits_type

Public Member Functions

iostate rdstate () const
 Returns the error state of the stream buffer.
void clear (iostate state=goodbit)
 [Re]sets the error state.
void setstate (iostate state)
 Sets additional flags in the error state.
bool good () const
 Fast error checking.
bool eof () const
 Fast error checking.
bool fail () const
 Fast error checking.
bool bad () const
 Fast error checking.
iostate exceptions () const
 Throwing exceptions on errors.
void exceptions (iostate __except)
 Throwing exceptions on errors.
 basic_ios (basic_streambuf< CharT, Traits > *sb)
 Constructor performs initialization.
virtual ~basic_ios ()
 Empty.
basic_ostream< CharT, Traits > * tie () const
 Fetches the current tied stream.
basic_ostream< CharT, Traits > * tie (basic_ostream< CharT, Traits > *__tiestr)
 Ties this stream to an output stream.
basic_streambuf< CharT, Traits > * rdbuf () const
 Accessing the underlying buffer.
basic_streambuf< CharT, Traits > * rdbuf (basic_streambuf< CharT, Traits > *sb)
 Changing the underlying buffer.
basic_ioscopyfmt (const basic_ios &__rhs)
char_type fill () const
 Retreives the "empty" character.
char_type fill (char_type ch)
 Sets a new "empty" character.
locale imbue (const locale &__loc)
 Moves to a new locale.
char narrow (char_type c, char __dfault) const
 Squeezes characters.
char_type widen (char c) const
 Widens characters.
void register_callback (event_callback __fn, int index)
fmtflags flags () const
 Access to format flags.
fmtflags flags (fmtflags __fmtfl)
 Setting new format flags all at once.
fmtflags setf (fmtflags __fmtfl)
 Setting new format flags.
fmtflags setf (fmtflags __fmtfl, fmtflags __mask)
 Setting new format flags.
void unsetf (fmtflags __mask)
 Clearing format flags.
streamsize precision () const
 Flags access.
streamsize precision (streamsize __prec)
 Changing flags.
streamsize width () const
 Flags access.
streamsize width (streamsize __wide)
 Changing flags.
locale getloc () const
 Locale access.
const locale & M_getloc () const
 Locale access.
long & iword (int __ix)
void *& pword (int __ix)
 operator void * () const
 The quick-and-easy status check.
bool operator! () const
 The quick-and-easy status check.

Static Public Member Functions

static bool sync_with_stdio (bool sync=true)
 Interaction with the standard C I/O objects.
static int xalloc () throw ()

Static Public Attributes

static const fmtflags boolalpha
 Insert/extract bool in alphabetic rather than numeric format.
static const fmtflags dec
 Converts integer input or generates integer output in decimal base.
static const fmtflags fixed
 Generate floating-point output in fixed-point notation.
static const fmtflags hex
 Converts integer input or generates integer output in hexadecimal base.
static const fmtflags internal
 Adds fill characters at a designated internal point in certain generated output, or identical to right if no such point is designated.
static const fmtflags left
 Adds fill characters on the right (final positions) of certain generated output. (I.e., the thing you print is flush left.).
static const fmtflags oct
 Converts integer input or generates integer output in octal base.
static const fmtflags right
 Adds fill characters on the left (initial positions) of certain generated output. (I.e., the thing you print is flush right.).
static const fmtflags scientific
 Generates floating-point output in scientific notation.
static const fmtflags showbase
 Generates a prefix indicating the numeric base of generated integer output.
static const fmtflags showpoint
 Generates a decimal-point character unconditionally in generated floating-point output.
static const fmtflags showpos
 Generates a + sign in non-negative generated numeric output.
static const fmtflags skipws
 Skips leading white space before certain input operations.
static const fmtflags unitbuf
 Flushes output after each output operation.
static const fmtflags uppercase
 Replaces certain lowercase letters with their uppercase equivalents in generated output.
static const fmtflags adjustfield
 A mask of left|right|internal. Useful for the 2-arg form of setf.
static const fmtflags basefield
 A mask of dec|oct|hex. Useful for the 2-arg form of setf.
static const fmtflags floatfield
 A mask of scientific|fixed. Useful for the 2-arg form of setf.
static const iostate badbit
 Indicates a loss of integrity in an input or output sequence (such as an irrecoverable read error from a file).
static const iostate eofbit
 Indicates that an input operation reached the end of an input sequence.
static const iostate failbit
 Indicates that an input operation failed to read the expected characters, or that an output operation failed to generate the desired characters.
static const iostate goodbit
 Indicates all is well.
static const openmode app
 Seek to end before each write.
static const openmode ate
 Open and seek to end immediately after opening.
static const openmode binary
 Perform input and output in binary mode (as opposed to text mode). This is probably not what you think it is; see http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#3 and http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#7 for more.
static const openmode in
 Open for input. Default for ifstream and fstream.
static const openmode out
 Open for output. Default for ofstream and fstream.
static const openmode trunc
 Open for input. Default for ofstream.
static const seekdir beg
 Request a seek relative to the beginning of the stream.
static const seekdir cur
 Request a seek relative to the current position within the sequence.
static const seekdir end
 Request a seek relative to the current end of the sequence.

Protected Member Functions

 basic_ios ()
 Empty.
void init (basic_streambuf< CharT, Traits > *sb)
 All setup is performed here.


Detailed Description

template<typename CharT, typename Traits>
class std::basic_ios< CharT, Traits >

Virtual base class for all stream classes.

Most of the member functions called dispatched on stream objects (e.g., std::cout.foo(bar);) are consolidated in this class.

Definition at line 56 of file basic_ios.h.


Member Typedef Documentation

template<typename CharT, typename Traits>
typedef CharT std::basic_ios< CharT, Traits >::char_type

template<typename CharT, typename Traits>
typedef Traits::int_type std::basic_ios< CharT, Traits >::int_type

template<typename CharT, typename Traits>
typedef Traits::pos_type std::basic_ios< CharT, Traits >::pos_type

template<typename CharT, typename Traits>
typedef Traits::off_type std::basic_ios< CharT, Traits >::off_type

template<typename CharT, typename Traits>
typedef Traits std::basic_ios< CharT, Traits >::traits_type

typedef IosFmtflags std::ios_base::fmtflags [inherited]

This is a bitmask type.

"IosFmtflags" is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type fmtflags are:

  • boolalpha
  • dec
  • fixed
  • hex
  • internal
  • left
  • oct
  • right
  • scientific
  • showbase
  • showpoint
  • showpos
  • skipws
  • unitbuf
  • uppercase
  • adjustfield
  • basefield
  • floatfield

Definition at line 212 of file ios_base.h.

typedef IosIostate std::ios_base::iostate [inherited]

This is a bitmask type.

"IosIostate" is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type iostate are:

  • badbit
  • eofbit
  • failbit
  • goodbit

Definition at line 269 of file ios_base.h.

typedef IosOpenmode std::ios_base::openmode [inherited]

This is a bitmask type.

"IosOpenmode" is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type openmode are:

  • app
  • ate
  • binary
  • in
  • out
  • trunc

Definition at line 296 of file ios_base.h.

typedef IosSeekdir std::ios_base::seekdir [inherited]

This is an enumerated type.

"IosSeekdir" is implementation-defined. Defined values of type seekdir are:

  • beg
  • cur, equivalent to SEEKCUR in the C standard library.
  • end, equivalent to SEEKEND in the C standard library.

Definition at line 323 of file ios_base.h.

typedef void(* std::ios_base::event_callback)(event, ios_base &, int) [inherited]

Todo:
Doc me! See docs/doxygen/TODO and http://gcc.gnu.org/ml/libstdc++/2002-02/msg00003.html for more.


Member Enumeration Documentation

enum std::ios_base::event [inherited]

Todo:
Doc me! See docs/doxygen/TODO and http://gcc.gnu.org/ml/libstdc++/2002-02/msg00003.html for more.

Definition at line 345 of file ios_base.h.


Constructor & Destructor Documentation

template<typename CharT, typename Traits>
std::basic_ios< CharT, Traits >::basic_ios ( basic_streambuf< CharT, Traits > *  sb  )  [inline, explicit]

Constructor performs initialization.

The parameter is passed by derived streams.

Definition at line 258 of file basic_ios.h.

template<typename CharT, typename Traits>
virtual std::basic_ios< CharT, Traits >::~basic_ios (  )  [inline, virtual]

Empty.

The destructor does nothing. More specifically, it does not destroy the streambuf held by rdbuf().

Definition at line 269 of file basic_ios.h.

template<typename CharT, typename Traits>
std::basic_ios< CharT, Traits >::basic_ios (  )  [inline, protected]

Empty.

The default constructor does nothing and is not normally accessible to users.

Definition at line 430 of file basic_ios.h.


Member Function Documentation

template<typename CharT, typename Traits>
std::basic_ios< CharT, Traits >::operator void * (  )  const [inline]

The quick-and-easy status check.

This allows you to write constructs such as "if (!a_stream) ..." and "while (a_stream) ..."

Definition at line 109 of file basic_ios.h.

template<typename CharT, typename Traits>
bool std::basic_ios< CharT, Traits >::operator! (  )  const [inline]

The quick-and-easy status check.

This allows you to write constructs such as "if (!a_stream) ..." and "while (a_stream) ..."

Definition at line 113 of file basic_ios.h.

template<typename CharT, typename Traits>
iostate std::basic_ios< CharT, Traits >::rdstate (  )  const [inline]

Returns the error state of the stream buffer.

Returns:
A bit pattern (well, isn't everything?)
See std::ios_base::iostate for the possible bit values. Most users will call one of the interpreting wrappers, e.g., good().

Definition at line 125 of file basic_ios.h.

Referenced by std::basic_ios< char, Traits >::bad(), std::basic_ios< CharT, Traits >::clear(), std::basic_ios< char, Traits >::eof(), std::basic_ios< char, Traits >::fail(), std::basic_ios< char, Traits >::good(), and std::basic_ios< char, Traits >::setstate().

template<typename CharT, typename Traits>
void std::basic_ios< CharT, Traits >::clear ( iostate  state = goodbit  )  [inline]

[Re]sets the error state.

Parameters:
state The new state flag(s) to set.
See std::ios_base::iostate for the possible bit values. Most users will not need to pass an argument.

Definition at line 39 of file basic_ios.tcc.

References std::ios_base::badbit, std::basic_ios< CharT, Traits >::exceptions(), std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::rdstate().

Referenced by std::basic_ios< char, Traits >::exceptions(), std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< char, Traits >::setstate().

template<typename CharT, typename Traits>
void std::basic_ios< CharT, Traits >::setstate ( iostate  state  )  [inline]

template<typename CharT, typename Traits>
bool std::basic_ios< CharT, Traits >::good (  )  const [inline]

Fast error checking.

Returns:
True if no error flags are set.
A wrapper around rdstate.

Definition at line 168 of file basic_ios.h.

Referenced by std::basic_ostream< CharT, Traits >::sentry::sentry(), and std::basic_istream< CharT, Traits >::sentry::sentry().

template<typename CharT, typename Traits>
bool std::basic_ios< CharT, Traits >::eof (  )  const [inline]

Fast error checking.

Returns:
True if the eofbit is set.
Note that other iostate flags may also be set.

Definition at line 178 of file basic_ios.h.

template<typename CharT, typename Traits>
bool std::basic_ios< CharT, Traits >::fail (  )  const [inline]

Fast error checking.

Returns:
True if either the badbit or the failbit is set.
Checking the badbit in fail() is historical practice. Note that other iostate flags may also be set.

Definition at line 189 of file basic_ios.h.

Referenced by std::basic_ios< char, Traits >::operator void *(), std::basic_ios< char, Traits >::operator!(), std::basic_istream< CharT, Traits >::seekg(), std::basic_ostream< CharT, Traits >::seekp(), std::basic_istream< CharT, Traits >::tellg(), and std::basic_ostream< CharT, Traits >::tellp().

template<typename CharT, typename Traits>
bool std::basic_ios< CharT, Traits >::bad (  )  const [inline]

Fast error checking.

Returns:
True if the badbit is set.
Note that other iostate flags may also be set.

Definition at line 199 of file basic_ios.h.

template<typename CharT, typename Traits>
iostate std::basic_ios< CharT, Traits >::exceptions (  )  const [inline]

Throwing exceptions on errors.

Returns:
The current exceptions mask.
This changes nothing in the stream. See the one-argument version of exceptions(iostate) for the meaning of the return value.

Definition at line 210 of file basic_ios.h.

Referenced by std::basic_ios< CharT, Traits >::clear(), and std::basic_ios< CharT, Traits >::copyfmt().

template<typename CharT, typename Traits>
void std::basic_ios< CharT, Traits >::exceptions ( iostate  __except  )  [inline]

Throwing exceptions on errors.

Parameters:
except The new exceptions mask.
By default, error flags are set silently. You can set an exceptions mask for each stream; if a bit in the mask becomes set in the error flags, then an exception of type std::ios_base::failure is thrown.

If the error flage is already set when the exceptions mask is added, the exception is immediately thrown. Try running the following under GCC 3.1 or later:

  #include <iostream>
  #include <fstream>
  #include <exception>
  
  int main()
  {
      std::set_terminate (__gnu_cxx::__verbose_terminate_handler);
  
      std::ifstream f ("/etc/motd");
  
      std::cerr << "Setting badbit\n";
      f.setstate (std::ios_base::badbit);
  
      std::cerr << "Setting exception mask\n";
      f.exceptions (std::ios_base::badbit);
  }

Definition at line 245 of file basic_ios.h.

template<typename CharT, typename Traits>
basic_ostream<CharT, Traits>* std::basic_ios< CharT, Traits >::tie (  )  const [inline]

Fetches the current tied stream.

Returns:
A pointer to the tied stream, or NULL if the stream is not tied.
A stream may be tied (or synchronized) to a second output stream. When this stream performs any I/O, the tied stream is first flushed. For example, std::cin is tied to std::cout.

Definition at line 282 of file basic_ios.h.

Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::basic_ostream< CharT, Traits >::sentry::sentry(), and std::basic_istream< CharT, Traits >::sentry::sentry().

template<typename CharT, typename Traits>
basic_ostream<CharT, Traits>* std::basic_ios< CharT, Traits >::tie ( basic_ostream< CharT, Traits > *  __tiestr  )  [inline]

Ties this stream to an output stream.

Parameters:
tiestr The output stream.
Returns:
The previously tied output stream, or NULL if the stream was not tied.
This sets up a new tie; see tie() for more.

Definition at line 294 of file basic_ios.h.

template<typename CharT, typename Traits>
basic_streambuf<CharT, Traits>* std::basic_ios< CharT, Traits >::rdbuf (  )  const [inline]

template<typename CharT, typename Traits>
basic_streambuf< CharT, Traits > * std::basic_ios< CharT, Traits >::rdbuf ( basic_streambuf< CharT, Traits > *  sb  )  [inline]

Changing the underlying buffer.

Parameters:
sb The new stream buffer.
Returns:
The previous stream buffer.
Associates a new buffer with the current stream, and clears the error state.

Due to historical accidents which the LWG refuses to correct, the I/O library suffers from a design error: this function is hidden in derived classes by overrides of the zero-argument rdbuf(), which is non-virtual for hysterical raisins. As a result, you must use explicit qualifications to access this function via any derived class.

Definition at line 51 of file basic_ios.tcc.

References std::basic_ios< CharT, Traits >::clear().

template<typename CharT, typename Traits>
basic_ios< CharT, Traits > & std::basic_ios< CharT, Traits >::copyfmt ( const basic_ios< CharT, Traits > &  __rhs  )  [inline]

template<typename CharT, typename Traits>
char_type std::basic_ios< CharT, Traits >::fill (  )  const [inline]

Retreives the "empty" character.

Returns:
The current fill character.
It defaults to a space (' ') in the current locale.

Definition at line 342 of file basic_ios.h.

Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::basic_ios< char, Traits >::fill(), and std::basic_ostream< CharT, Traits >::operator<<().

template<typename CharT, typename Traits>
char_type std::basic_ios< CharT, Traits >::fill ( char_type  ch  )  [inline]

Sets a new "empty" character.

Parameters:
ch The new character.
Returns:
The previous fill character.
The fill character is used to fill out space when P+ characters have been requested (e.g., via setw), Q characters are actually used, and Q<P. It defaults to a space (' ') in the current locale.

Definition at line 362 of file basic_ios.h.

template<typename CharT, typename Traits>
locale std::basic_ios< CharT, Traits >::imbue ( const locale &  __loc  )  [inline]

Moves to a new locale.

Parameters:
loc The new locale.
Returns:
The previous locale.
Calls ios_base::imbue(loc), and if a stream buffer is associated with this stream, calls that buffer's pubimbue(loc).

Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/22_locale/howto.html

Reimplemented from std::ios_base.

Definition at line 139 of file basic_ios.tcc.

References std::ios_base::getloc(), std::ios_base::imbue(), and std::basic_ios< CharT, Traits >::rdbuf().

template<typename CharT, typename Traits>
char std::basic_ios< CharT, Traits >::narrow ( char_type  c,
char  __dfault 
) const [inline]

Squeezes characters.

Parameters:
c The character to narrow.
dfault The character to narrow.
Returns:
The narrowed character.
Maps a character of char_type to a character of char, if possible.

Returns the result of

    std::use_facet< ctype<char_type> >(getloc()).narrow(c,dfault)

Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/22_locale/howto.html

Definition at line 118 of file basic_ios.tcc.

Referenced by std::operator>>().

template<typename CharT, typename Traits>
CharT std::basic_ios< CharT, Traits >::widen ( char  c  )  const [inline]

Widens characters.

Parameters:
c The character to widen.
Returns:
The widened character.
Maps a character of char to a character of char_type.

Returns the result of

    std::use_facet< ctype<char_type> >(getloc()).widen(c)

Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/22_locale/howto.html

Definition at line 128 of file basic_ios.tcc.

Referenced by std::endl(), std::basic_ios< char, Traits >::fill(), std::basic_istream< char >::get(), and std::basic_istream< char >::getline().

template<typename CharT, typename Traits>
void std::basic_ios< CharT, Traits >::init ( basic_streambuf< CharT, Traits > *  sb  )  [inline, protected]

All setup is performed here.

This is called from the public constructor. It is not virtual and cannot be redefined. The second argument, cache, is used to initialize the standard streams without allocating memory.

Definition at line 151 of file basic_ios.tcc.

References std::ios_base::badbit, and std::ios_base::goodbit.

Referenced by std::basic_ios< char, Traits >::basic_ios(), std::basic_istream< char >::basic_istream(), std::basic_istringstream< CharT, Traits, Alloc >::basic_istringstream(), std::basic_ostream< char >::basic_ostream(), std::basic_ostringstream< CharT, Traits, Alloc >::basic_ostringstream(), and std::basic_stringstream< CharT, Traits, Alloc >::basic_stringstream().

void std::ios_base::register_callback ( event_callback  __fn,
int  index 
) [inherited]

Todo:
Doc me! See docs/doxygen/TODO and http://gcc.gnu.org/ml/libstdc++/2002-02/msg00003.html for more.

Definition at line 333 of file ios.cc.

fmtflags std::ios_base::flags (  )  const [inline, inherited]

Access to format flags.

Returns:
The format control flags for both input and output.

Definition at line 472 of file ios_base.h.

Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::basic_ostream< CharT, Traits >::operator<<(), std::basic_ostream< char >::operator<<(), and std::basic_istream< CharT, Traits >::sentry::sentry().

fmtflags std::ios_base::flags ( fmtflags  __fmtfl  )  [inline, inherited]

Setting new format flags all at once.

Parameters:
fmtfl The new flags to set.
Returns:
The previous format control flags.
This function overwrites all the format flags with fmtfl.

Definition at line 482 of file ios_base.h.

fmtflags std::ios_base::setf ( fmtflags  __fmtfl  )  [inline, inherited]

Setting new format flags.

Parameters:
fmtfl Additional flags to set.
Returns:
The previous format control flags.
This function sets additional flags in format control. Flags that were previously set remain set.

Definition at line 498 of file ios_base.h.

Referenced by std::boolalpha(), std::dec(), std::fixed(), std::hex(), std::internal(), std::left(), std::oct(), std::right(), std::scientific(), std::showbase(), std::showpoint(), std::showpos(), std::skipws(), std::unitbuf(), and std::uppercase().

fmtflags std::ios_base::setf ( fmtflags  __fmtfl,
fmtflags  __mask 
) [inline, inherited]

Setting new format flags.

Parameters:
fmtfl Additional flags to set.
mask The flags mask for fmtfl.
Returns:
The previous format control flags.
This function clears mask in the format flags, then sets fmtfl & mask. An example mask is ios_base::adjustfield.

Definition at line 515 of file ios_base.h.

void std::ios_base::unsetf ( fmtflags  __mask  )  [inline, inherited]

Clearing format flags.

Parameters:
mask The flags to unset.
This function clears mask in the format flags.

Definition at line 530 of file ios_base.h.

Referenced by std::noboolalpha(), std::noshowbase(), std::noshowpoint(), std::noshowpos(), std::noskipws(), std::nounitbuf(), and std::nouppercase().

streamsize std::ios_base::precision (  )  const [inline, inherited]

Flags access.

Returns:
The precision to generate on certain output operations.

Definition at line 542 of file ios_base.h.

Referenced by std::basic_ios< CharT, Traits >::copyfmt().

streamsize std::ios_base::precision ( streamsize  __prec  )  [inline, inherited]

Changing flags.

Parameters:
prec The new precision value.
Returns:
The previous value of precision().

Definition at line 550 of file ios_base.h.

streamsize std::ios_base::width (  )  const [inline, inherited]

Flags access.

Returns:
The minimum field width to generate on output operations.
"Minimum field width" refers to the number of characters.

Definition at line 564 of file ios_base.h.

Referenced by std::basic_ios< CharT, Traits >::copyfmt(), and std::operator>>().

streamsize std::ios_base::width ( streamsize  __wide  )  [inline, inherited]

Changing flags.

Parameters:
wide The new width value.
Returns:
The previous value of width().

Definition at line 572 of file ios_base.h.

bool std::ios_base::sync_with_stdio ( bool  sync = true  )  [static, inherited]

Interaction with the standard C I/O objects.

Parameters:
sync Whether to synchronize or not.
Returns:
True if the standard streams were previously synchronized.
The synchronization referred to is only that between the standard C facilities (e.g., stdout) and the standard C++ objects (e.g., cout). User-declared streams are unaffected. See http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#8 for more.

Definition at line 364 of file ios.cc.

locale std::ios_base::getloc (  )  const [inline, inherited]

Locale access.

Returns:
A copy of the current locale.
If imbue(loc) has previously been called, then this function returns loc. Otherwise, it returns a copy of std::locale(), the global C++ locale.

Definition at line 614 of file ios_base.h.

Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::basic_ios< CharT, Traits >::imbue(), std::operator>>(), and std::ws().

const locale& std::ios_base::M_getloc (  )  const [inline, inherited]

Locale access.

Returns:
A reference to the current locale.
Like getloc above, but returns a reference instead of generating a copy.

Definition at line 624 of file ios_base.h.

int std::ios_base::xalloc (  )  throw () [static, inherited]

Todo:
Doc me! See docs/doxygen/TODO and http://gcc.gnu.org/ml/libstdc++/2002-02/msg00003.html for more.

Definition at line 241 of file ios.cc.

long& std::ios_base::iword ( int  __ix  )  [inline, inherited]

Todo:
Doc me! See docs/doxygen/TODO and http://gcc.gnu.org/ml/libstdc++/2002-02/msg00003.html for more.

Definition at line 637 of file ios_base.h.

void*& std::ios_base::pword ( int  __ix  )  [inline, inherited]

Todo:
Doc me! See docs/doxygen/TODO and http://gcc.gnu.org/ml/libstdc++/2002-02/msg00003.html for more.

Definition at line 648 of file ios_base.h.


Member Data Documentation

const ios_base::fmtflags std::ios_base::boolalpha [static, inherited]

Insert/extract bool in alphabetic rather than numeric format.

Definition at line 214 of file ios_base.h.

Referenced by std::boolalpha(), and std::noboolalpha().

const ios_base::fmtflags std::ios_base::dec [static, inherited]

Converts integer input or generates integer output in decimal base.

Definition at line 216 of file ios_base.h.

Referenced by std::dec().

const ios_base::fmtflags std::ios_base::fixed [static, inherited]

Generate floating-point output in fixed-point notation.

Definition at line 218 of file ios_base.h.

Referenced by std::fixed().

const ios_base::fmtflags std::ios_base::hex [static, inherited]

Converts integer input or generates integer output in hexadecimal base.

Definition at line 220 of file ios_base.h.

Referenced by std::hex(), std::basic_ostream< CharT, Traits >::operator<<(), and std::basic_ostream< char >::operator<<().

const ios_base::fmtflags std::ios_base::internal [static, inherited]

Adds fill characters at a designated internal point in certain generated output, or identical to right if no such point is designated.

Definition at line 224 of file ios_base.h.

Referenced by std::internal().

const ios_base::fmtflags std::ios_base::left [static, inherited]

Adds fill characters on the right (final positions) of certain generated output. (I.e., the thing you print is flush left.).

Definition at line 227 of file ios_base.h.

Referenced by std::left().

const ios_base::fmtflags std::ios_base::oct [static, inherited]

Converts integer input or generates integer output in octal base.

Definition at line 229 of file ios_base.h.

Referenced by std::oct(), std::basic_ostream< CharT, Traits >::operator<<(), and std::basic_ostream< char >::operator<<().

const ios_base::fmtflags std::ios_base::right [static, inherited]

Adds fill characters on the left (initial positions) of certain generated output. (I.e., the thing you print is flush right.).

Definition at line 232 of file ios_base.h.

Referenced by std::right().

const ios_base::fmtflags std::ios_base::scientific [static, inherited]

Generates floating-point output in scientific notation.

Definition at line 234 of file ios_base.h.

Referenced by std::scientific().

const ios_base::fmtflags std::ios_base::showbase [static, inherited]

Generates a prefix indicating the numeric base of generated integer output.

Definition at line 237 of file ios_base.h.

Referenced by std::noshowbase(), and std::showbase().

const ios_base::fmtflags std::ios_base::showpoint [static, inherited]

Generates a decimal-point character unconditionally in generated floating-point output.

Definition at line 240 of file ios_base.h.

Referenced by std::noshowpoint(), and std::showpoint().

const ios_base::fmtflags std::ios_base::showpos [static, inherited]

Generates a + sign in non-negative generated numeric output.

Definition at line 242 of file ios_base.h.

Referenced by std::noshowpos(), and std::showpos().

const ios_base::fmtflags std::ios_base::skipws [static, inherited]

Skips leading white space before certain input operations.

Definition at line 244 of file ios_base.h.

Referenced by std::noskipws(), std::basic_istream< CharT, Traits >::sentry::sentry(), and std::skipws().

const ios_base::fmtflags std::ios_base::unitbuf [static, inherited]

Flushes output after each output operation.

Definition at line 246 of file ios_base.h.

Referenced by std::nounitbuf(), std::unitbuf(), and std::basic_ostream< CharT, Traits >::sentry::~sentry().

const ios_base::fmtflags std::ios_base::uppercase [static, inherited]

Replaces certain lowercase letters with their uppercase equivalents in generated output.

Definition at line 249 of file ios_base.h.

Referenced by std::nouppercase(), and std::uppercase().

A mask of left|right|internal. Useful for the 2-arg form of setf.

Definition at line 251 of file ios_base.h.

Referenced by std::internal(), std::left(), and std::right().

const ios_base::fmtflags std::ios_base::basefield [static, inherited]

A mask of dec|oct|hex. Useful for the 2-arg form of setf.

Definition at line 253 of file ios_base.h.

Referenced by std::dec(), std::hex(), std::oct(), std::basic_ostream< CharT, Traits >::operator<<(), and std::basic_ostream< char >::operator<<().

const ios_base::fmtflags std::ios_base::floatfield [static, inherited]

A mask of scientific|fixed. Useful for the 2-arg form of setf.

Definition at line 255 of file ios_base.h.

Referenced by std::fixed(), and std::scientific().

const ios_base::iostate std::ios_base::badbit [static, inherited]

const ios_base::iostate std::ios_base::eofbit [static, inherited]

const ios_base::iostate std::ios_base::failbit [static, inherited]

const ios_base::iostate std::ios_base::goodbit [static, inherited]

const ios_base::openmode std::ios_base::app [static, inherited]

Seek to end before each write.

Definition at line 298 of file ios_base.h.

const ios_base::openmode std::ios_base::ate [static, inherited]

Open and seek to end immediately after opening.

Definition at line 300 of file ios_base.h.

Referenced by std::basic_filebuf< CharT, Traits >::open().

const ios_base::openmode std::ios_base::binary [static, inherited]

Perform input and output in binary mode (as opposed to text mode). This is probably not what you think it is; see http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#3 and http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#7 for more.

Definition at line 305 of file ios_base.h.

const ios_base::openmode std::ios_base::in [static, inherited]

const ios_base::openmode std::ios_base::out [static, inherited]

const ios_base::openmode std::ios_base::trunc [static, inherited]

Open for input. Default for ofstream.

Definition at line 311 of file ios_base.h.

const ios_base::seekdir std::ios_base::beg [static, inherited]

Request a seek relative to the beginning of the stream.

Definition at line 325 of file ios_base.h.

Referenced by std::basic_filebuf< CharT, Traits >::seekpos().

const ios_base::seekdir std::ios_base::cur [static, inherited]

const ios_base::seekdir std::ios_base::end [static, inherited]

Request a seek relative to the current end of the sequence.

Definition at line 329 of file ios_base.h.

Referenced by std::basic_filebuf< CharT, Traits >::open(), and std::basic_stringbuf< CharT, Traits, Alloc >::seekoff().


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

Generated on Thu May 8 08:58:45 2008 for libstdc++-v3 Source by  doxygen 1.5.5