This class supports reading from named files, using the inherited functions from std::basic_ostream. To control the associated sequence, an instance of std::basic_filebuf is used, which this page refers to as sb
.
Definition at line 530 of file fstream.
If the sentry status is good, the function tries to generate whatever data is appropriate for the type of the argument.
If an exception is thrown during insertion, ios_base::badbit will be turned on in the stream's error state. If badbit is on in the stream's exceptions mask, the exception will be rethrown without completing its actions.
operator<<
functions (aka formatted output functions) have some common behavior. Each starts by constructing a temporary object of type std::basic_ostream::sentry. This can have several effects, concluding with the setting of a status flag; see the sentry documentation for more.If the sentry status is good, the function tries to generate whatever data is appropriate for the type of the argument.
If an exception is thrown during insertion, ios_base::badbit will be turned on in the stream's error state without causing an ios_base::failure to be thrown. The original exception will then be rethrown.
typedef ctype<_CharT> std::basic_ostream< _CharT, _Traits >::__ctype_type [inherited] |
These are non-standard types.
Reimplemented from std::basic_ios< _CharT, _Traits >.
typedef num_get<_CharT, istreambuf_iterator<_CharT, _Traits> > std::basic_ios< _CharT, _Traits >::__num_get_type [inherited] |
These are non-standard types.
Reimplemented in std::basic_istream< _CharT, _Traits >, std::basic_istream< char, _Traits >, and std::basic_istream< char >.
Definition at line 90 of file basic_ios.h.
typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > std::basic_ostream< _CharT, _Traits >::__num_put_type [inherited] |
These are non-standard types.
Reimplemented from std::basic_ios< _CharT, _Traits >.
typedef _CharT std::basic_ofstream< _CharT, _Traits >::char_type |
These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.
Reimplemented from std::basic_ostream< _CharT, _Traits >.
typedef void(* std::ios_base::event_callback)(event, ios_base &, int) [inherited] |
The type of an event callback function.
event | One of the members of the event enum. | |
ios_base | Reference to the ios_base object. | |
int | The integer provided when the callback was registered. |
typedef _Ios_Fmtflags std::ios_base::fmtflags [inherited] |
This is a bitmask type.
"_Ios_Fmtflags"
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:
Definition at line 255 of file ios_base.h.
typedef traits_type::int_type std::basic_ofstream< _CharT, _Traits >::int_type |
These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.
Reimplemented from std::basic_ostream< _CharT, _Traits >.
typedef _Ios_Iostate std::ios_base::iostate [inherited] |
This is a bitmask type.
"_Ios_Iostate"
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:
Definition at line 330 of file ios_base.h.
typedef traits_type::off_type std::basic_ofstream< _CharT, _Traits >::off_type |
These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.
Reimplemented from std::basic_ostream< _CharT, _Traits >.
typedef _Ios_Openmode std::ios_base::openmode [inherited] |
This is a bitmask type.
"_Ios_Openmode"
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:
Definition at line 361 of file ios_base.h.
typedef traits_type::pos_type std::basic_ofstream< _CharT, _Traits >::pos_type |
These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.
Reimplemented from std::basic_ostream< _CharT, _Traits >.
typedef _Ios_Seekdir std::ios_base::seekdir [inherited] |
This is an enumerated type.
"_Ios_Seekdir"
is implementation-defined. Defined values of type seekdir are:
SEEK_CUR
in the C standard library.SEEK_END
in the C standard library. Definition at line 393 of file ios_base.h.
typedef _Traits std::basic_ofstream< _CharT, _Traits >::traits_type |
These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.
Reimplemented from std::basic_ostream< _CharT, _Traits >.
enum std::ios_base::event [inherited] |
The set of events that may be passed to an event callback.
erase_event is used during ~ios() and copyfmt(). imbue_event is used during imbue(). copyfmt_event is used during copyfmt().
Definition at line 419 of file ios_base.h.
std::basic_ofstream< _CharT, _Traits >::basic_ofstream | ( | ) | [inline] |
std::basic_ofstream< _CharT, _Traits >::basic_ofstream | ( | const char * | __s, | |
ios_base::openmode | __mode = ios_base::out|ios_base::trunc | |||
) | [inline, explicit] |
Create an output file stream.
s | Null terminated string specifying the filename. | |
mode | Open file in specified mode (see std::ios_base). |
ios_base::out|ios_basetrunc
is automatically included in mode.Tip: When using std::string to hold the filename, you must use .c_str() before passing it to this constructor.
std::basic_ofstream< _CharT, _Traits >::~basic_ofstream | ( | ) | [inline] |
const locale& std::ios_base::_M_getloc | ( | ) | const [inline, inherited] |
Locale access.
Definition at line 702 of file ios_base.h.
Referenced by std::money_get< _CharT, _InIter >::do_get(), std::num_get< _CharT, _InIter >::do_get(), std::time_get< _CharT, _InIter >::do_get_date(), std::time_get< _CharT, _InIter >::do_get_monthname(), std::time_get< _CharT, _InIter >::do_get_time(), std::time_get< _CharT, _InIter >::do_get_weekday(), std::time_get< _CharT, _InIter >::do_get_year(), std::time_put< _CharT, _OutIter >::do_put(), std::num_put< _CharT, _OutIter >::do_put(), and std::time_put< _CharT, _OutIter >::put().
void std::basic_ostream< _CharT, _Traits >::_M_write | ( | const char_type * | __s, | |
streamsize | __n | |||
) | [inline, inherited] |
Simple insertion.
c | The character to insert. |
Definition at line 291 of file ostream.
Referenced by std::basic_ostream< _CharT, _Traits >::write().
bool std::basic_ios< _CharT, _Traits >::bad | ( | ) | const [inline, inherited] |
Fast error checking.
Definition at line 205 of file basic_ios.h.
void std::basic_ios< _CharT, _Traits >::clear | ( | iostate | __state = goodbit |
) | [inline, inherited] |
[Re]sets the error state.
state | The new state flag(s) to set. |
Definition at line 45 of file basic_ios.tcc.
Referenced by std::basic_ios< _CharT, _Traits >::rdbuf().
void std::basic_ofstream< _CharT, _Traits >::close | ( | ) | [inline] |
Close the file.
Calls std::basic_filebuf::close()
. If that function fails, failbit
is set in the stream's error state.
basic_ios< _CharT, _Traits > & std::basic_ios< _CharT, _Traits >::copyfmt | ( | const basic_ios< _CharT, _Traits > & | __rhs | ) | [inline, inherited] |
Copies fields of __rhs into this.
__rhs | The source values for the copies. |
Definition at line 67 of file basic_ios.tcc.
References std::ios_base::_M_callbacks, std::ios_base::_M_word, std::ios_base::_M_word_size, std::basic_ios< _CharT, _Traits >::exceptions(), std::basic_ios< _CharT, _Traits >::fill(), std::ios_base::flags(), std::ios_base::getloc(), std::ios_base::precision(), std::basic_ios< _CharT, _Traits >::tie(), and std::ios_base::width().
bool std::basic_ios< _CharT, _Traits >::eof | ( | ) | const [inline, inherited] |
Fast error checking.
Definition at line 184 of file basic_ios.h.
void std::basic_ios< _CharT, _Traits >::exceptions | ( | iostate | __except | ) | [inline, inherited] |
Throwing exceptions on errors.
except | The new exceptions mask. |
If the error flag 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 251 of file basic_ios.h.
iostate std::basic_ios< _CharT, _Traits >::exceptions | ( | ) | const [inline, inherited] |
Throwing exceptions on errors.
Definition at line 216 of file basic_ios.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt().
bool std::basic_ios< _CharT, _Traits >::fail | ( | ) | const [inline, inherited] |
Fast error checking.
Definition at line 195 of file basic_ios.h.
Referenced by std::basic_istream< _CharT, _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().
char_type std::basic_ios< _CharT, _Traits >::fill | ( | char_type | __ch | ) | [inline, inherited] |
Sets a new "empty" character.
ch | The new character. |
Definition at line 384 of file basic_ios.h.
char_type std::basic_ios< _CharT, _Traits >::fill | ( | ) | const [inline, inherited] |
Retrieves the "empty" character.
Definition at line 364 of file basic_ios.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt().
Setting new format flags all at once.
fmtfl | The new flags to set. |
Definition at line 558 of file ios_base.h.
fmtflags std::ios_base::flags | ( | ) | const [inline, inherited] |
Access to format flags.
Definition at line 547 of file ios_base.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::num_get< _CharT, _InIter >::do_get(), std::num_put< _CharT, _OutIter >::do_put(), std::operator<<(), and std::basic_ostream< _CharT, _Traits >::operator<<().
basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::flush | ( | ) | [inline, inherited] |
Synchronizing the stream buffer.
rdbuf()
is a null pointer, changes nothing.
Otherwise, calls rdbuf()->pubsync()
, and if that returns -1, sets badbit.
Definition at line 216 of file ostream.tcc.
References std::ios_base::badbit, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_ios< _CharT, _Traits >::setstate().
Referenced by std::flush().
locale std::ios_base::getloc | ( | ) | const [inline, inherited] |
Locale access.
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 691 of file ios_base.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::money_put< _CharT, _OutIter >::do_put(), std::basic_ios< _CharT, _Traits >::imbue(), std::operator>>(), and std::ws().
bool std::basic_ios< _CharT, _Traits >::good | ( | ) | const [inline, inherited] |
Fast error checking.
Definition at line 174 of file basic_ios.h.
locale std::basic_ios< _CharT, _Traits >::imbue | ( | const locale & | __loc | ) | [inline, inherited] |
Moves to a new locale.
loc | The new locale. |
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++/manual/localization.html
Reimplemented from std::ios_base.
Definition at line 118 of file basic_ios.tcc.
References std::ios_base::getloc(), std::ios_base::imbue(), and std::basic_ios< _CharT, _Traits >::rdbuf().
void std::basic_ios< _CharT, _Traits >::init | ( | basic_streambuf< _CharT, _Traits > * | __sb | ) | [inline, protected, inherited] |
All setup is performed here.
This is called from the public constructor. It is not virtual and cannot be redefined.
Definition at line 130 of file basic_ios.tcc.
References std::ios_base::_M_exception, std::ios_base::_M_streambuf_state, std::ios_base::badbit, and std::ios_base::goodbit.
bool std::basic_ofstream< _CharT, _Traits >::is_open | ( | ) | [inline] |
long& std::ios_base::iword | ( | int | __ix | ) | [inline, inherited] |
Access to integer array.
__ix | Index into the array. |
The implementation reserves several indices. You should use xalloc to obtain an index that is safe to use. Also note that since the array can grow dynamically, it is not safe to hold onto the reference.
Definition at line 737 of file ios_base.h.
char std::basic_ios< _CharT, _Traits >::narrow | ( | char_type | __c, | |
char | __dfault | |||
) | const [inline, inherited] |
Squeezes characters.
c | The character to narrow. | |
dfault | The character to narrow. |
char_type
to a character of char
, if possible.Returns the result of
Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html
Definition at line 424 of file basic_ios.h.
void std::basic_ofstream< _CharT, _Traits >::open | ( | const char * | __s, | |
ios_base::openmode | __mode = ios_base::out | ios_base::trunc | |||
) | [inline] |
Opens an external file.
s | The name of the file. | |
mode | The open mode flags. |
std::basic_filebuf::open
(s,mode|out|trunc). If that function fails, failbit
is set in the stream's error state.Tip: When using std::string to hold the filename, you must use .c_str() before passing it to this constructor.
std::basic_ios< _CharT, _Traits >::operator void * | ( | ) | const [inline, inherited] |
The quick-and-easy status check.
This allows you to write constructs such as "if (!a_stream) ..." and "while (a_stream) ..."
Definition at line 115 of file basic_ios.h.
bool std::basic_ios< _CharT, _Traits >::operator! | ( | ) | const [inline, inherited] |
The quick-and-easy status check.
This allows you to write constructs such as "if (!a_stream) ..." and "while (a_stream) ..."
Definition at line 119 of file basic_ios.h.
basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::operator<< | ( | __streambuf_type * | __sb | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
Definition at line 125 of file ostream.tcc.
References std::ios_base::badbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_ios< _CharT, _Traits >::setstate().
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | const void * | __p | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | long double | __f | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | float | __f | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | double | __f | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | unsigned long long | __n | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | long long | __n | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | unsigned int | __n | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::operator<< | ( | int | __n | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
Definition at line 111 of file ostream.tcc.
References std::ios_base::basefield, std::ios_base::flags(), std::ios_base::hex, and std::ios_base::oct.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | unsigned short | __n | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::operator<< | ( | short | __n | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
Definition at line 97 of file ostream.tcc.
References std::ios_base::basefield, std::ios_base::flags(), std::ios_base::hex, and std::ios_base::oct.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | bool | __n | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | unsigned long | __n | ) | [inline, inherited] |
Extracting from another streambuf.
sb | A pointer to a streambuf |
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into *this
until one of the following occurs:
If the function inserts no characters, failbit is set.
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | long | __n | ) | [inline, inherited] |
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | ios_base &(*)(ios_base &) | __pf | ) | [inline, inherited] |
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | __ios_type &(*)(__ios_type &) | __pf | ) | [inline, inherited] |
__ostream_type& std::basic_ostream< _CharT, _Traits >::operator<< | ( | __ostream_type &(*)(__ostream_type &) | __pf | ) | [inline, inherited] |
streamsize std::ios_base::precision | ( | streamsize | __prec | ) | [inline, inherited] |
Changing flags.
prec | The new precision value. |
Definition at line 626 of file ios_base.h.
streamsize std::ios_base::precision | ( | ) | const [inline, inherited] |
Flags access.
Definition at line 617 of file ios_base.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt().
basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::put | ( | char_type | __c | ) | [inline, inherited] |
Simple insertion.
c | The character to insert. |
Definition at line 154 of file ostream.tcc.
References std::ios_base::badbit, std::ios_base::goodbit, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_ios< _CharT, _Traits >::setstate().
Referenced by std::endl(), and std::ends().
void*& std::ios_base::pword | ( | int | __ix | ) | [inline, inherited] |
Access to void pointer array.
__ix | Index into the array. |
The implementation reserves several indices. You should use xalloc to obtain an index that is safe to use. Also note that since the array can grow dynamically, it is not safe to hold onto the reference.
Definition at line 758 of file ios_base.h.
basic_streambuf< _CharT, _Traits > * std::basic_ios< _CharT, _Traits >::rdbuf | ( | basic_streambuf< _CharT, _Traits > * | __sb | ) | [inline, inherited] |
Changing the underlying buffer.
sb | The new stream buffer. |
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. For example:
std::fstream foo; // or some other derived type std::streambuf* p = .....; foo.ios::rdbuf(p); // ios == basic_ios<char>
Definition at line 57 of file basic_ios.tcc.
References std::basic_ios< _CharT, _Traits >::clear().
__filebuf_type* std::basic_ofstream< _CharT, _Traits >::rdbuf | ( | ) | const [inline] |
Accessing the underlying buffer.
Reimplemented from std::basic_ios< _CharT, _Traits >.
iostate std::basic_ios< _CharT, _Traits >::rdstate | ( | ) | const [inline, inherited] |
Returns the error state of the stream buffer.
Definition at line 131 of file basic_ios.h.
void std::ios_base::register_callback | ( | event_callback | __fn, | |
int | __index | |||
) | [inherited] |
Add the callback __fn with parameter __index.
__fn | The function to add. | |
__index | The integer to pass to the function when invoked. |
basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::seekp | ( | off_type | __off, | |
ios_base::seekdir | __dir | |||
) | [inline, inherited] |
Changing the current write position.
off | A file offset object. | |
dir | The direction in which to seek. |
fail()
is not true, calls rdbuf()->pubseekoff(off,dir)
. If that function fails, sets failbit.
Definition at line 295 of file ostream.tcc.
References std::ios_base::badbit, std::basic_ios< _CharT, _Traits >::fail(), std::ios_base::failbit, std::ios_base::goodbit, std::ios_base::out, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_ios< _CharT, _Traits >::setstate().
basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::seekp | ( | pos_type | __pos | ) | [inline, inherited] |
Changing the current write position.
pos | A file position object. |
fail()
is not true, calls rdbuf()->pubseekpos(pos)
. If that function fails, sets failbit.
Definition at line 263 of file ostream.tcc.
References std::ios_base::badbit, std::basic_ios< _CharT, _Traits >::fail(), std::ios_base::failbit, std::ios_base::goodbit, std::ios_base::out, std::basic_ios< _CharT, _Traits >::rdbuf(), and std::basic_ios< _CharT, _Traits >::setstate().
Setting new format flags.
fmtfl | Additional flags to set. | |
mask | The flags mask for fmtfl. |
&
mask. An example mask is ios_base::adjustfield
.
Definition at line 591 of file ios_base.h.
Setting new format flags.
fmtfl | Additional flags to set. |
Definition at line 574 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().
void std::basic_ios< _CharT, _Traits >::setstate | ( | iostate | __state | ) | [inline, inherited] |
Sets additional flags in the error state.
state | The additional state flag(s) to set. |
Definition at line 151 of file basic_ios.h.
Referenced by std::basic_ostream< _CharT, _Traits >::flush(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::getline(), std::getline(), std::basic_istream< _CharT, _Traits >::ignore(), std::basic_ostream< _CharT, _Traits >::operator<<(), std::basic_istream< _CharT, _Traits >::operator>>(), std::operator>>(), std::basic_istream< _CharT, _Traits >::peek(), std::basic_ostream< _CharT, _Traits >::put(), std::basic_istream< _CharT, _Traits >::putback(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, _Traits >::readsome(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_ostream< _CharT, _Traits >::seekp(), std::basic_istream< _CharT, _Traits >::sync(), std::basic_istream< _CharT, _Traits >::unget(), and std::ws().
static bool std::ios_base::sync_with_stdio | ( | bool | __sync = true |
) | [static, inherited] |
Interaction with the standard C I/O objects.
sync | Whether to synchronize or not. |
basic_ostream< _CharT, _Traits >::pos_type std::basic_ostream< _CharT, _Traits >::tellp | ( | ) | [inline, inherited] |
Getting the current write position.
fail()
is not false, returns pos_type
(-1) to indicate failure. Otherwise returns rdbuf()->pubseekoff(0,cur,out)
.
Definition at line 242 of file ostream.tcc.
References std::ios_base::badbit, std::ios_base::cur, std::basic_ios< _CharT, _Traits >::fail(), std::ios_base::out, and std::basic_ios< _CharT, _Traits >::rdbuf().
basic_ostream<_CharT, _Traits>* std::basic_ios< _CharT, _Traits >::tie | ( | basic_ostream< _CharT, _Traits > * | __tiestr | ) | [inline, inherited] |
Ties this stream to an output stream.
tiestr | The output stream. |
Definition at line 301 of file basic_ios.h.
basic_ostream<_CharT, _Traits>* std::basic_ios< _CharT, _Traits >::tie | ( | ) | const [inline, inherited] |
Fetches the current tied stream.
std::cin
is tied to std::cout
.
Definition at line 289 of file basic_ios.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt().
void std::ios_base::unsetf | ( | fmtflags | __mask | ) | [inline, inherited] |
Clearing format flags.
mask | The flags to unset. |
Definition at line 606 of file ios_base.h.
Referenced by std::noboolalpha(), std::noshowbase(), std::noshowpoint(), std::noshowpos(), std::noskipws(), std::nounitbuf(), and std::nouppercase().
char_type std::basic_ios< _CharT, _Traits >::widen | ( | char | __c | ) | const [inline, inherited] |
Widens characters.
c | The character to widen. |
char
to a character of char_type
.Returns the result of
Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html
Definition at line 443 of file basic_ios.h.
Referenced by std::endl(), std::getline(), and std::operator>>().
streamsize std::ios_base::width | ( | streamsize | __wide | ) | [inline, inherited] |
Changing flags.
wide | The new width value. |
Definition at line 649 of file ios_base.h.
streamsize std::ios_base::width | ( | ) | const [inline, inherited] |
Flags access.
Definition at line 640 of file ios_base.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::num_put< _CharT, _OutIter >::do_put(), and std::operator>>().
basic_ostream< _CharT, _Traits > & std::basic_ostream< _CharT, _Traits >::write | ( | const char_type * | __s, | |
streamsize | __n | |||
) | [inline, inherited] |
Character string insertion.
s | The array to insert. | |
n | Maximum number of characters to insert. |
Definition at line 188 of file ostream.tcc.
References std::basic_ostream< _CharT, _Traits >::_M_write(), and std::ios_base::badbit.
static int std::ios_base::xalloc | ( | ) | throw () [static, inherited] |
Access to unique indices.
The implementation maintains a static variable that is incremented and returned on each invocation. xalloc is guaranteed to return an index that is safe to use in the iword and pword arrays.
iostate std::ios_base::_M_exception [protected, inherited] |
ios_base data members (doc me)
Definition at line 459 of file ios_base.h.
Referenced by std::basic_ios< _CharT, _Traits >::init().
fmtflags std::ios_base::_M_flags [protected, inherited] |
ios_base data members (doc me)
Definition at line 458 of file ios_base.h.
streamsize std::ios_base::_M_precision [protected, inherited] |
ios_base data members (doc me)
Definition at line 456 of file ios_base.h.
iostate std::ios_base::_M_streambuf_state [protected, inherited] |
ios_base data members (doc me)
Definition at line 460 of file ios_base.h.
Referenced by std::basic_ios< _CharT, _Traits >::init().
streamsize std::ios_base::_M_width [protected, inherited] |
ios_base data members (doc me)
Definition at line 457 of file ios_base.h.
const fmtflags std::ios_base::adjustfield [static, inherited] |
A mask of left|right|internal. Useful for the 2-arg form of setf
.
Definition at line 310 of file ios_base.h.
const openmode std::ios_base::app [static, inherited] |
const openmode std::ios_base::ate [static, inherited] |
Open and seek to end immediately after opening.
Definition at line 367 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::open().
const iostate std::ios_base::badbit [static, inherited] |
Indicates a loss of integrity in an input or output sequence (such as an irrecoverable read error from a file).
Definition at line 334 of file ios_base.h.
Referenced by std::basic_ostream< _CharT, _Traits >::flush(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::getline(), std::basic_istream< _CharT, _Traits >::ignore(), std::basic_ios< _CharT, _Traits >::init(), std::operator<<(), std::basic_ostream< _CharT, _Traits >::operator<<(), std::operator>>(), std::basic_istream< _CharT, _Traits >::peek(), std::basic_ostream< _CharT, _Traits >::put(), std::basic_istream< _CharT, _Traits >::putback(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, _Traits >::readsome(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_ostream< _CharT, _Traits >::seekp(), std::basic_istream< _CharT, _Traits >::sync(), std::basic_istream< _CharT, _Traits >::tellg(), std::basic_ostream< _CharT, _Traits >::tellp(), std::basic_istream< _CharT, _Traits >::unget(), and std::basic_ostream< _CharT, _Traits >::write().
const fmtflags std::ios_base::basefield [static, inherited] |
A mask of dec|oct|hex. Useful for the 2-arg form of setf
.
Definition at line 313 of file ios_base.h.
Referenced by std::num_get< _CharT, _InIter >::do_get(), and std::basic_ostream< _CharT, _Traits >::operator<<().
const seekdir std::ios_base::beg [static, inherited] |
Request a seek relative to the beginning of the stream.
Definition at line 396 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::seekpos().
const 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++/manual/bk01pt11ch27s02.html.
Definition at line 372 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::showmanyc().
const fmtflags std::ios_base::boolalpha [static, inherited] |
Insert/extract bool
in alphabetic rather than numeric format.
Definition at line 258 of file ios_base.h.
Referenced by std::num_get< _CharT, _InIter >::do_get(), and std::num_put< _CharT, _OutIter >::do_put().
const seekdir std::ios_base::cur [static, inherited] |
Request a seek relative to the current position within the sequence.
Definition at line 399 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), std::basic_filebuf< _CharT, _Traits >::pbackfail(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_filebuf< _CharT, _Traits >::seekoff(), std::basic_istream< _CharT, _Traits >::tellg(), and std::basic_ostream< _CharT, _Traits >::tellp().
const fmtflags std::ios_base::dec [static, inherited] |
Converts integer input or generates integer output in decimal base.
Definition at line 261 of file ios_base.h.
const seekdir std::ios_base::end [static, inherited] |
Request a seek relative to the current end of the sequence.
Definition at line 402 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::open(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff().
const iostate std::ios_base::eofbit [static, inherited] |
Indicates that an input operation reached the end of an input sequence.
Definition at line 337 of file ios_base.h.
Referenced by std::num_get< _CharT, _InIter >::do_get(), std::time_get< _CharT, _InIter >::do_get_date(), std::time_get< _CharT, _InIter >::do_get_monthname(), std::time_get< _CharT, _InIter >::do_get_time(), std::time_get< _CharT, _InIter >::do_get_weekday(), std::time_get< _CharT, _InIter >::do_get_year(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::getline(), std::basic_istream< _CharT, _Traits >::ignore(), std::operator>>(), std::basic_istream< _CharT, _Traits >::operator>>(), std::basic_istream< _CharT, _Traits >::peek(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, _Traits >::readsome(), and std::ws().
const iostate std::ios_base::failbit [static, inherited] |
Indicates that an input operation failed to read the expected characters, or that an output operation failed to generate the desired characters.
Definition at line 342 of file ios_base.h.
Referenced by std::num_get< _CharT, _InIter >::do_get(), std::time_get< _CharT, _InIter >::do_get_monthname(), std::time_get< _CharT, _InIter >::do_get_weekday(), std::time_get< _CharT, _InIter >::do_get_year(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::getline(), std::basic_ostream< _CharT, _Traits >::operator<<(), std::operator>>(), std::basic_istream< _CharT, _Traits >::operator>>(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, _Traits >::seekg(), and std::basic_ostream< _CharT, _Traits >::seekp().
const fmtflags std::ios_base::fixed [static, inherited] |
const fmtflags std::ios_base::floatfield [static, inherited] |
A mask of scientific|fixed. Useful for the 2-arg form of setf
.
Definition at line 316 of file ios_base.h.
const iostate std::ios_base::goodbit [static, inherited] |
Indicates all is well.
Definition at line 345 of file ios_base.h.
Referenced by std::time_get< _CharT, _InIter >::do_get_monthname(), std::time_get< _CharT, _InIter >::do_get_weekday(), std::basic_ostream< _CharT, _Traits >::flush(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::getline(), std::basic_istream< _CharT, _Traits >::ignore(), std::basic_ios< _CharT, _Traits >::init(), std::basic_ostream< _CharT, _Traits >::operator<<(), std::operator>>(), std::basic_istream< _CharT, _Traits >::operator>>(), std::basic_istream< _CharT, _Traits >::peek(), std::basic_ostream< _CharT, _Traits >::put(), std::basic_istream< _CharT, _Traits >::putback(), std::basic_istream< _CharT, _Traits >::read(), std::basic_istream< _CharT, _Traits >::readsome(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_ostream< _CharT, _Traits >::seekp(), std::basic_istream< _CharT, _Traits >::sync(), and std::basic_istream< _CharT, _Traits >::unget().
const fmtflags std::ios_base::hex [static, inherited] |
Converts integer input or generates integer output in hexadecimal base.
Definition at line 267 of file ios_base.h.
Referenced by std::num_get< _CharT, _InIter >::do_get(), std::num_put< _CharT, _OutIter >::do_put(), and std::basic_ostream< _CharT, _Traits >::operator<<().
const openmode std::ios_base::in [static, inherited] |
Open for input. Default for ifstream
and fstream.
Definition at line 375 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::pbackfail(), std::basic_istream< _CharT, _Traits >::seekg(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_filebuf< _CharT, _Traits >::showmanyc(), std::basic_istream< _CharT, _Traits >::tellg(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::underflow(), std::basic_filebuf< _CharT, _Traits >::underflow(), and std::basic_filebuf< _CharT, _Traits >::xsgetn().
const 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 272 of file ios_base.h.
Referenced by std::num_put< _CharT, _OutIter >::do_put().
const 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 276 of file ios_base.h.
const fmtflags std::ios_base::oct [static, inherited] |
Converts integer input or generates integer output in octal base.
Definition at line 279 of file ios_base.h.
Referenced by std::basic_ostream< _CharT, _Traits >::operator<<().
const openmode std::ios_base::out [static, inherited] |
Open for output. Default for ofstream
and fstream.
Definition at line 378 of file ios_base.h.
Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_filebuf< _CharT, _Traits >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_ostream< _CharT, _Traits >::seekp(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_ostream< _CharT, _Traits >::tellp(), and std::basic_filebuf< _CharT, _Traits >::xsputn().
const 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 283 of file ios_base.h.
const fmtflags std::ios_base::scientific [static, inherited] |
const fmtflags std::ios_base::showbase [static, inherited] |
Generates a prefix indicating the numeric base of generated integer output.
Definition at line 290 of file ios_base.h.
const fmtflags std::ios_base::showpoint [static, inherited] |
Generates a decimal-point character unconditionally in generated floating-point output.
Definition at line 294 of file ios_base.h.
const fmtflags std::ios_base::showpos [static, inherited] |
Generates a + sign in non-negative generated numeric output.
Definition at line 297 of file ios_base.h.
const fmtflags std::ios_base::skipws [static, inherited] |
Skips leading white space before certain input operations.
Definition at line 300 of file ios_base.h.
const openmode std::ios_base::trunc [static, inherited] |
const fmtflags std::ios_base::unitbuf [static, inherited] |
const fmtflags std::ios_base::uppercase [static, inherited] |
Replaces certain lowercase letters with their uppercase equivalents in generated output.
Definition at line 307 of file ios_base.h.
Referenced by std::num_put< _CharT, _OutIter >::do_put().