libstdc++
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Public Types | |
typedef ctype< _CharT > | __ctype_type |
typedef ctype< _CharT > | __ctype_type |
typedef basic_filebuf < char_type, traits_type > | __filebuf_type |
typedef basic_ios< char_type, traits_type > | __ios_type |
typedef basic_iostream < char_type, traits_type > | __iostream_type |
typedef basic_istream< _CharT, _Traits > | __istream_type |
typedef num_get< _CharT, istreambuf_iterator< _CharT, _Traits > > | __num_get_type |
typedef num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > > | __num_put_type |
typedef basic_ostream< _CharT, _Traits > | __ostream_type |
typedef basic_streambuf < _CharT, _Traits > | __streambuf_type |
typedef basic_streambuf < _CharT, _Traits > | __streambuf_type |
typedef _CharT | char_type |
enum | event { erase_event, imbue_event, copyfmt_event } |
typedef void(* | event_callback )(event, ios_base &, int) |
typedef _Ios_Fmtflags | fmtflags |
typedef traits_type::int_type | int_type |
typedef int | io_state |
typedef _Ios_Iostate | iostate |
typedef traits_type::off_type | off_type |
typedef int | open_mode |
typedef _Ios_Openmode | openmode |
typedef traits_type::pos_type | pos_type |
typedef int | seek_dir |
typedef _Ios_Seekdir | seekdir |
typedef std::streamoff | streamoff |
typedef std::streampos | streampos |
typedef _Traits | traits_type |
typedef num_put< _CharT, ostreambuf_iterator< _CharT, _Traits > > | __num_put_type |
Public Member Functions | |
const locale & | _M_getloc () const |
void | _M_setstate (iostate __state) |
bool | bad () const |
basic_fstream () | |
basic_fstream (const char *__s, ios_base::openmode __mode=ios_base::in|ios_base::out) | |
basic_fstream (const std::string &__s, ios_base::openmode __mode=ios_base::in|ios_base::out) | |
void | clear (iostate __state=goodbit) |
void | close () |
basic_ios & | copyfmt (const basic_ios &__rhs) |
bool | eof () const |
iostate | exceptions () const |
void | exceptions (iostate __except) |
bool | fail () const |
char_type | fill () const |
char_type | fill (char_type __ch) |
fmtflags | flags () const |
fmtflags | flags (fmtflags __fmtfl) |
__ostream_type & | flush () |
streamsize | gcount () const |
template<> | |
basic_istream< char > & | getline (char_type *__s, streamsize __n, char_type __delim) |
template<> | |
basic_istream< wchar_t > & | getline (char_type *__s, streamsize __n, char_type __delim) |
locale | getloc () const |
bool | good () const |
template<> | |
basic_istream< char > & | ignore (streamsize __n) |
template<> | |
basic_istream< char > & | ignore (streamsize __n, int_type __delim) |
template<> | |
basic_istream< wchar_t > & | ignore (streamsize __n) |
template<> | |
basic_istream< wchar_t > & | ignore (streamsize __n, int_type __delim) |
locale | imbue (const locale &__loc) |
bool | is_open () |
bool | is_open () const |
long & | iword (int __ix) |
char | narrow (char_type __c, char __dfault) const |
void | open (const char *__s, ios_base::openmode __mode=ios_base::in|ios_base::out) |
void | open (const std::string &__s, ios_base::openmode __mode=ios_base::in|ios_base::out) |
streamsize | precision () const |
streamsize | precision (streamsize __prec) |
void *& | pword (int __ix) |
basic_streambuf< _CharT, _Traits > * | rdbuf (basic_streambuf< _CharT, _Traits > *__sb) |
__filebuf_type * | rdbuf () const |
iostate | rdstate () const |
void | register_callback (event_callback __fn, int __index) |
__ostream_type & | seekp (pos_type) |
__ostream_type & | seekp (off_type, ios_base::seekdir) |
fmtflags | setf (fmtflags __fmtfl) |
fmtflags | setf (fmtflags __fmtfl, fmtflags __mask) |
void | setstate (iostate __state) |
pos_type | tellp () |
basic_ostream< _CharT, _Traits > * | tie () const |
basic_ostream< _CharT, _Traits > * | tie (basic_ostream< _CharT, _Traits > *__tiestr) |
void | unsetf (fmtflags __mask) |
char_type | widen (char __c) const |
streamsize | width () const |
streamsize | width (streamsize __wide) |
~basic_fstream () | |
__istream_type & | operator>> (__istream_type &(*__pf)(__istream_type &)) |
__istream_type & | operator>> (__ios_type &(*__pf)(__ios_type &)) |
__istream_type & | operator>> (ios_base &(*__pf)(ios_base &)) |
Arithmetic Extractors | |
All the If the sentry status is good, the function tries to extract whatever data is appropriate for the type of the argument. If an exception is thrown during extraction, 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. | |
__istream_type & | operator>> (bool &__n) |
__istream_type & | operator>> (short &__n) |
__istream_type & | operator>> (unsigned short &__n) |
__istream_type & | operator>> (int &__n) |
__istream_type & | operator>> (unsigned int &__n) |
__istream_type & | operator>> (long &__n) |
__istream_type & | operator>> (unsigned long &__n) |
__istream_type & | operator>> (long long &__n) |
__istream_type & | operator>> (unsigned long long &__n) |
__istream_type & | operator>> (float &__f) |
__istream_type & | operator>> (double &__f) |
__istream_type & | operator>> (long double &__f) |
__istream_type & | operator>> (void *&__p) |
__istream_type & | operator>> (__streambuf_type *__sb) |
Unformatted Input Functions | |
All the unformatted input functions have some common behavior. Each starts by constructing a temporary object of type std::basic_istream::sentry with the second argument (noskipws) set to true. This has 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 extract whatever data is appropriate for the type of the argument. The number of characters extracted is stored for later retrieval by gcount(). If an exception is thrown during extraction, 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. | |
int_type | get () |
__istream_type & | get (char_type &__c) |
__istream_type & | get (char_type *__s, streamsize __n, char_type __delim) |
__istream_type & | get (char_type *__s, streamsize __n) |
__istream_type & | get (__streambuf_type &__sb, char_type __delim) |
__istream_type & | get (__streambuf_type &__sb) |
__istream_type & | getline (char_type *__s, streamsize __n, char_type __delim) |
__istream_type & | getline (char_type *__s, streamsize __n) |
__istream_type & | ignore () |
__istream_type & | ignore (streamsize __n) |
__istream_type & | ignore (streamsize __n, int_type __delim) |
int_type | peek () |
__istream_type & | read (char_type *__s, streamsize __n) |
streamsize | readsome (char_type *__s, streamsize __n) |
__istream_type & | putback (char_type __c) |
__istream_type & | unget () |
int | sync () |
pos_type | tellg () |
__istream_type & | seekg (pos_type) |
__istream_type & | seekg (off_type, ios_base::seekdir) |
operator void * () const | |
bool | operator! () const |
__ostream_type & | operator<< (__ostream_type &(*__pf)(__ostream_type &)) |
__ostream_type & | operator<< (__ios_type &(*__pf)(__ios_type &)) |
__ostream_type & | operator<< (ios_base &(*__pf)(ios_base &)) |
Arithmetic Inserters | |
All the 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. | |
__ostream_type & | operator<< (long __n) |
__ostream_type & | operator<< (unsigned long __n) |
__ostream_type & | operator<< (bool __n) |
__ostream_type & | operator<< (short __n) |
__ostream_type & | operator<< (unsigned short __n) |
__ostream_type & | operator<< (int __n) |
__ostream_type & | operator<< (unsigned int __n) |
__ostream_type & | operator<< (long long __n) |
__ostream_type & | operator<< (unsigned long long __n) |
__ostream_type & | operator<< (double __f) |
__ostream_type & | operator<< (float __f) |
__ostream_type & | operator<< (long double __f) |
__ostream_type & | operator<< (const void *__p) |
__ostream_type & | operator<< (__streambuf_type *__sb) |
Unformatted Output Functions | |
All the unformatted output functions have some common behavior. Each starts by constructing a temporary object of type std::basic_ostream::sentry. This has 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. If badbit is on in the stream's exceptions mask, the exception will be rethrown without completing its actions. | |
__ostream_type & | put (char_type __c) |
void | _M_write (const char_type *__s, streamsize __n) |
__ostream_type & | write (const char_type *__s, streamsize __n) |
Static Public Member Functions | |
static bool | sync_with_stdio (bool __sync=true) |
static int | xalloc () throw () |
Static Public Attributes | |
static const fmtflags | adjustfield |
static const openmode | app |
static const openmode | ate |
static const iostate | badbit |
static const fmtflags | basefield |
static const seekdir | beg |
static const openmode | binary |
static const fmtflags | boolalpha |
static const seekdir | cur |
static const fmtflags | dec |
static const seekdir | end |
static const iostate | eofbit |
static const iostate | failbit |
static const fmtflags | fixed |
static const fmtflags | floatfield |
static const iostate | goodbit |
static const fmtflags | hex |
static const openmode | in |
static const fmtflags | internal |
static const fmtflags | left |
static const fmtflags | oct |
static const openmode | out |
static const fmtflags | right |
static const fmtflags | scientific |
static const fmtflags | showbase |
static const fmtflags | showpoint |
static const fmtflags | showpos |
static const fmtflags | skipws |
static const openmode | trunc |
static const fmtflags | unitbuf |
static const fmtflags | uppercase |
Protected Types | |
enum | { _S_local_word_size } |
Protected Member Functions | |
void | _M_cache_locale (const locale &__loc) |
void | _M_call_callbacks (event __ev) throw () |
void | _M_dispose_callbacks (void) |
template<typename _ValueT > | |
__istream_type & | _M_extract (_ValueT &__v) |
_Words & | _M_grow_words (int __index, bool __iword) |
void | _M_init () |
template<typename _ValueT > | |
__ostream_type & | _M_insert (_ValueT __v) |
void | init (basic_streambuf< _CharT, _Traits > *__sb) |
Protected Attributes | |
_Callback_list * | _M_callbacks |
const __ctype_type * | _M_ctype |
char_type | _M_fill |
bool | _M_fill_init |
streamsize | _M_gcount |
locale | _M_ios_locale |
_Words | _M_local_word [_S_local_word_size] |
const __num_get_type * | _M_num_get |
const __num_put_type * | _M_num_put |
basic_streambuf< _CharT, _Traits > * | _M_streambuf |
basic_ostream< _CharT, _Traits > * | _M_tie |
_Words * | _M_word |
int | _M_word_size |
_Words | _M_word_zero |
streamsize | _M_precision |
streamsize | _M_width |
fmtflags | _M_flags |
iostate | _M_exception |
iostate | _M_streambuf_state |
Controlling input and output for files.
This class supports reading from and writing to named files, using the inherited functions from std::basic_iostream. To control the associated sequence, an instance of std::basic_filebuf is used, which this page refers to as sb
.
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These are non-standard types.
Reimplemented from std::basic_ios< _CharT, _Traits >.
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inherited |
These are non-standard types.
Reimplemented from std::basic_ios< _CharT, _Traits >.
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inherited |
These are non-standard types.
Reimplemented from std::basic_ios< _CharT, _Traits >.
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inherited |
These are non-standard types.
Reimplemented from std::basic_ios< _CharT, _Traits >.
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These are non-standard types.
Reimplemented in std::basic_ostream< _CharT, _Traits >, std::basic_ostream< char, _Traits >, and std::basic_ostream< char >.
Definition at line 84 of file basic_ios.h.
typedef _CharT std::basic_fstream< _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_iostream< _CharT, _Traits >.
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. |
Event callbacks are user defined functions that get called during several ios_base and basic_ios functions, specifically imbue(), copyfmt(), and ~ios().
Definition at line 444 of file ios_base.h.
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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 263 of file ios_base.h.
typedef traits_type::int_type std::basic_fstream< _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_iostream< _CharT, _Traits >.
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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 338 of file ios_base.h.
typedef traits_type::off_type std::basic_fstream< _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_iostream< _CharT, _Traits >.
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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 369 of file ios_base.h.
typedef traits_type::pos_type std::basic_fstream< _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_iostream< _CharT, _Traits >.
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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 401 of file ios_base.h.
typedef _Traits std::basic_fstream< _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_iostream< _CharT, _Traits >.
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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 427 of file ios_base.h.
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Create an input/output file stream.
s | Null terminated string specifying the filename. |
mode | Open file in specified mode (see std::ios_base). |
Tip: When using std::string to hold the filename, you must use .c_str() before passing it to this constructor.
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Create an input/output file stream.
s | Null terminated string specifying the filename. |
mode | Open file in specified mode (see std::ios_base). |
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Locale access.
Like getloc above, but returns a reference instead of generating a copy.
Definition at line 710 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().
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Fast error checking.
Note that other iostate flags may also be set.
Definition at line 201 of file basic_ios.h.
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[Re]sets the error state.
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 40 of file basic_ios.tcc.
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Close the file.
Calls std::basic_filebuf::close()
. If that function fails, failbit
is set in the stream's error state.
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Copies fields of __rhs into this.
__rhs | The source values for the copies. |
All fields of __rhs are copied into this object except that rdbuf() and rdstate() remain unchanged. All values in the pword and iword arrays are copied. Before copying, each callback is invoked with erase_event. After copying, each (new) callback is invoked with copyfmt_event. The final step is to copy exceptions().
Definition at line 62 of file basic_ios.tcc.
References 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().
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Fast error checking.
Note that other iostate flags may also be set.
Definition at line 180 of file basic_ios.h.
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Throwing exceptions on errors.
This changes nothing in the stream. See the one-argument version of exceptions(iostate) for the meaning of the return value.
Definition at line 212 of file basic_ios.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt().
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Throwing exceptions on errors.
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 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:
Definition at line 247 of file basic_ios.h.
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Fast error checking.
Checking the badbit in fail() is historical practice. Note that other iostate flags may also be set.
Definition at line 191 of file basic_ios.h.
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Retrieves the "empty" character.
It defaults to a space (' ') in the current locale.
Definition at line 360 of file basic_ios.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt().
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Sets a new "empty" character.
ch | The new 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 380 of file basic_ios.h.
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Access to format flags.
Definition at line 555 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(), and std::operator<<().
Setting new format flags all at once.
fmtfl | The new flags to set. |
This function overwrites all the format flags with fmtfl.
Definition at line 566 of file ios_base.h.
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Synchronizing the stream buffer.
If rdbuf()
is a null pointer, changes nothing.
Otherwise, calls rdbuf()->pubsync()
, and if that returns -1, sets badbit.
Definition at line 211 of file ostream.tcc.
Referenced by std::flush().
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Simple extraction.
Tries to extract a character. If none are available, sets failbit and returns traits::eof().
Definition at line 186 of file istream.tcc.
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Simple extraction.
c | The character in which to store data. |
Tries to extract a character and store it in c. If none are available, sets failbit and returns traits::eof().
Definition at line 222 of file istream.tcc.
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Simple multiple-character extraction.
s | Pointer to an array. |
n | Maximum number of characters to store in s. |
delim | A "stop" character. |
Characters are extracted and stored into s until one of the following happens:
n-1
characters are storedIf no characters are stored, failbit is set in the stream's error state.
In any case, a null character is stored into the next location in the array.
Definition at line 259 of file istream.tcc.
References std::basic_streambuf< _CharT, _Traits >::sgetc(), and std::basic_streambuf< _CharT, _Traits >::snextc().
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Extraction into another streambuf.
sb | A streambuf in which to store data. |
delim | A "stop" character. |
Characters are extracted and inserted into sb until one of the following happens:
If no characters are stored, failbit is set in the stream's error state.
Definition at line 306 of file istream.tcc.
References std::basic_streambuf< _CharT, _Traits >::sgetc(), std::basic_streambuf< _CharT, _Traits >::snextc(), and std::basic_streambuf< _CharT, _Traits >::sputc().
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String extraction.
s | A character array in which to store the data. |
n | Maximum number of characters to extract. |
delim | A "stop" character. |
Extracts and stores characters into s until one of the following happens. Note that these criteria are required to be tested in the order listed here, to allow an input line to exactly fill the s array without setting failbit.
delim
, in which case the character is extracted (and therefore counted in gcount()
) but not storedn-1
characters are stored, in which case failbit is set in the stream error stateIf no characters are extracted, failbit is set. (An empty line of input should therefore not cause failbit to be set.)
In any case, a null character is stored in the next location in the array.
Definition at line 350 of file istream.tcc.
References std::basic_streambuf< _CharT, _Traits >::sbumpc(), std::basic_streambuf< _CharT, _Traits >::sgetc(), and std::basic_streambuf< _CharT, _Traits >::snextc().
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String extraction.
s | A character array in which to store the data. |
n | Maximum number of characters to extract. |
Returns getline
(s,n,widen('
')).
Definition at line 405 of file istream.
Referenced by std::basic_istream< char >::getline().
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Locale access.
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 699 of file ios_base.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::money_put< _CharT, _OutIter >::do_put(), std::operator>>(), and std::ws().
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Fast error checking.
A wrapper around rdstate.
Definition at line 170 of file basic_ios.h.
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Discarding characters.
n | Number of characters to discard. |
delim | A "stop" character. |
Extracts characters and throws them away until one of the following happens:
!=
std::numeric_limits<int>::max()
, n characters are extractedtraits::eof()
.NB: Provide three overloads, instead of the single function (with defaults) mandated by the Standard: this leads to a better performing implementation, while still conforming to the Standard.
Definition at line 410 of file istream.tcc.
References std::basic_streambuf< _CharT, _Traits >::sbumpc().
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Simple extraction.
Tries to extract a character. If none are available, sets failbit and returns traits::eof().
Definition at line 443 of file istream.tcc.
References std::basic_streambuf< _CharT, _Traits >::sgetc(), and std::basic_streambuf< _CharT, _Traits >::snextc().
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Simple extraction.
Tries to extract a character. If none are available, sets failbit and returns traits::eof().
Definition at line 505 of file istream.tcc.
References std::basic_streambuf< _CharT, _Traits >::sbumpc(), std::basic_streambuf< _CharT, _Traits >::sgetc(), and std::basic_streambuf< _CharT, _Traits >::snextc().
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Moves to a new locale.
loc | The new 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++/manual/localization.html
Reimplemented from std::ios_base.
Definition at line 113 of file basic_ios.tcc.
Referenced by std::operator<<().
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All setup is performed here.
This is called from the public constructor. It is not virtual and cannot be redefined.
Definition at line 125 of file basic_ios.tcc.
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inline |
Wrapper to test for an open file.
Definition at line 844 of file fstream.
References std::basic_filebuf< _CharT, _Traits >::is_open().
|
inlineinherited |
Access to integer array.
__ix | Index into the array. |
The iword function provides access to an array of integers that can be used for any purpose. The array grows as required to hold the supplied index. All integers in the array are initialized to 0.
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 745 of file ios_base.h.
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inlineinherited |
Squeezes characters.
c | The character to narrow. |
dfault | The character to narrow. |
Maps a character of 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 420 of file basic_ios.h.
|
inline |
Opens an external file.
s | The name of the file. |
mode | The open mode flags. |
Calls std::basic_filebuf::open(s,mode)
. 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.
|
inline |
|
inlineinherited |
The quick-and-easy status check.
This allows you to write constructs such as "if (!a_stream) ..." and "while (a_stream) ..."
Definition at line 111 of file basic_ios.h.
|
inlineinherited |
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.
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inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inherited |
Basic arithmetic inserters.
A | variable of builtin type. |
*this
if successfulThese functions use the stream's current locale (specifically, the num_get
facet) to perform numeric formatting.
Definition at line 92 of file ostream.tcc.
References std::hex(), and std::oct().
|
inlineinherited |
|
inherited |
Basic arithmetic inserters.
A | variable of builtin type. |
*this
if successfulThese functions use the stream's current locale (specifically, the num_get
facet) to perform numeric formatting.
Definition at line 106 of file ostream.tcc.
References std::hex(), and std::oct().
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inherited |
Extracting from another streambuf.
sb | A pointer to a streambuf |
This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.
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 120 of file ostream.tcc.
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inherited |
Basic arithmetic extractors.
A | variable of builtin type. |
*this
if successfulThese functions use the stream's current locale (specifically, the num_get
facet) to parse the input data.
Definition at line 114 of file istream.tcc.
|
inlineinherited |
|
inherited |
Basic arithmetic extractors.
A | variable of builtin type. |
*this
if successfulThese functions use the stream's current locale (specifically, the num_get
facet) to parse the input data.
Definition at line 134 of file istream.tcc.
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inlineinherited |
|
inherited |
Extracting into another streambuf.
sb | A pointer to a streambuf |
This function behaves like one of the basic arithmetic extractors, in that it also constructs a sentry object and has the same error handling behavior.
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from this stream and inserted into the sb streambuf until one of the following occurs:
If the function inserts no characters, failbit is set.
Definition at line 154 of file istream.tcc.
|
inherited |
Looking ahead in the stream.
If, after constructing the sentry object, good()
is false, returns traits::eof()
. Otherwise reads but does not extract the next input character.
Definition at line 570 of file istream.tcc.
|
inlineinherited |
Flags access.
Be careful if you try to give a definition of "precision" here; see DR 189.
Definition at line 625 of file ios_base.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), and std::operator<<().
|
inlineinherited |
Changing flags.
prec | The new precision value. |
Definition at line 634 of file ios_base.h.
|
inherited |
Simple insertion.
c | The character to insert. |
Tries to insert c.
Definition at line 149 of file ostream.tcc.
Referenced by std::endl(), and std::ends().
|
inherited |
Unextracting a single character.
c | The character to push back into the input stream. |
If rdbuf()
is not null, calls rdbuf()->sputbackc(c)
.
If rdbuf()
is null or if sputbackc()
fails, sets badbit in the error state.
gcount()
will return 0, as required by DR 60. Definition at line 661 of file istream.tcc.
References std::basic_streambuf< _CharT, _Traits >::sputbackc().
Referenced by std::operator>>().
|
inlineinherited |
Access to void pointer array.
__ix | Index into the array. |
The pword function provides access to an array of pointers that can be used for any purpose. The array grows as required to hold the supplied index. All pointers in the array are initialized to 0.
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 766 of file ios_base.h.
|
inherited |
Changing the underlying buffer.
sb | The new 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. For example:
Definition at line 52 of file basic_ios.tcc.
|
inline |
Accessing the underlying buffer.
This hides both signatures of std::basic_ios::rdbuf().
Reimplemented from std::basic_ios< _CharT, _Traits >.
|
inlineinherited |
Returns the error state of the stream buffer.
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 127 of file basic_ios.h.
|
inherited |
Extraction without delimiters.
s | A character array. |
n | Maximum number of characters to store. |
If the stream state is good()
, extracts characters and stores them into s until one of the following happens:
failbit|eofbit
.Definition at line 600 of file istream.tcc.
|
inherited |
Extraction until the buffer is exhausted, but no more.
s | A character array. |
n | Maximum number of characters to store. |
Extracts characters and stores them into s depending on the number of characters remaining in the streambuf's buffer, rdbuf()->in_avail()
, called A
here:
A
==
-1
, sets eofbit and extracts no charactersA
==
0
, extracts no charactersA
>
0
, extracts min(A,n)
The goal is to empty the current buffer, and to not request any more from the external input sequence controlled by the streambuf.
Definition at line 629 of file istream.tcc.
References std::min().
|
inherited |
Add the callback __fn with parameter __index.
__fn | The function to add. |
__index | The integer to pass to the function when invoked. |
Registers a function as an event callback with an integer parameter to be passed to the function when invoked. Multiple copies of the function are allowed. If there are multiple callbacks, they are invoked in the order they were registered.
|
inherited |
Changing the current read position.
pos | A file position object. |
If fail()
is not true, calls rdbuf()->pubseekpos(pos)
. If that function fails, sets failbit.
gcount()
. Definition at line 787 of file istream.tcc.
|
inherited |
Changing the current read position.
off | A file offset object. |
dir | The direction in which to seek. |
If fail()
is not true, calls rdbuf()->pubseekoff(off,dir)
. If that function fails, sets failbit.
gcount()
. Definition at line 820 of file istream.tcc.
|
inherited |
Changing the current write position.
pos | A file position object. |
If fail()
is not true, calls rdbuf()->pubseekpos(pos)
. If that function fails, sets failbit.
Definition at line 258 of file ostream.tcc.
|
inherited |
Changing the current write position.
off | A file offset object. |
dir | The direction in which to seek. |
If fail()
is not true, calls rdbuf()->pubseekoff(off,dir)
. If that function fails, sets failbit.
Definition at line 290 of file ostream.tcc.
Setting new format flags.
fmtfl | Additional flags to set. |
This function sets additional flags in format control. Flags that were previously set remain set.
Definition at line 582 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().
Setting new format flags.
fmtfl | Additional flags to set. |
mask | The flags mask for fmtfl. |
This function clears mask in the format flags, then sets fmtfl &
mask. An example mask is ios_base::adjustfield
.
Definition at line 599 of file ios_base.h.
|
inlineinherited |
Sets additional flags in the error state.
state | The additional state flag(s) to set. |
See std::ios_base::iostate for the possible bit values.
Definition at line 147 of file basic_ios.h.
Referenced by std::getline(), std::operator<<(), std::operator>>(), and std::ws().
|
inherited |
Synchronizing the stream buffer.
If rdbuf()
is a null pointer, returns -1.
Otherwise, calls rdbuf()->pubsync()
, and if that returns -1, sets badbit and returns -1.
Otherwise, returns 0.
gcount()
. Definition at line 727 of file istream.tcc.
References std::basic_streambuf< _CharT, _Traits >::pubsync().
|
staticinherited |
Interaction with the standard C I/O objects.
sync | Whether to synchronize or not. |
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++/manual/bk01pt11ch28s02.html
|
inherited |
Getting the current read position.
If fail()
is not false, returns pos_type
(-1) to indicate failure. Otherwise returns rdbuf()->pubseekoff(0,cur,in)
.
gcount()
. Definition at line 763 of file istream.tcc.
|
inherited |
Getting the current write position.
If fail()
is not false, returns pos_type
(-1) to indicate failure. Otherwise returns rdbuf()->pubseekoff(0,cur,out)
.
Definition at line 237 of file ostream.tcc.
|
inlineinherited |
Fetches the current tied stream.
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 285 of file basic_ios.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt().
|
inlineinherited |
Ties this stream to an output stream.
tiestr | The output stream. |
This sets up a new tie; see tie() for more.
Definition at line 297 of file basic_ios.h.
|
inherited |
Unextracting the previous character.
If rdbuf()
is not null, calls rdbuf()->sungetc(c)
.
If rdbuf()
is null or if sungetc()
fails, sets badbit in the error state.
gcount()
will return 0, as required by DR 60. Definition at line 694 of file istream.tcc.
References std::basic_streambuf< _CharT, _Traits >::sungetc().
|
inlineinherited |
Clearing format flags.
mask | The flags to unset. |
This function clears mask in the format flags.
Definition at line 614 of file ios_base.h.
Referenced by std::noboolalpha(), std::noshowbase(), std::noshowpoint(), std::noshowpos(), std::noskipws(), std::nounitbuf(), and std::nouppercase().
|
inlineinherited |
Widens characters.
c | The character to widen. |
Maps a character of 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 439 of file basic_ios.h.
Referenced by std::endl(), std::getline(), and std::operator>>().
|
inlineinherited |
Flags access.
"Minimum field width" refers to the number of characters.
Definition at line 648 of file ios_base.h.
Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::num_put< _CharT, _OutIter >::do_put(), and std::operator>>().
|
inlineinherited |
Changing flags.
wide | The new width value. |
Definition at line 657 of file ios_base.h.
|
inherited |
Character string insertion.
s | The array to insert. |
n | Maximum number of characters to insert. |
Characters are copied from s and inserted into the stream until one of the following happens:
Definition at line 183 of file ostream.tcc.
|
staticinherited |
Access to unique indices.
This function returns a unique integer every time it is called. It can be used for any purpose, but is primarily intended to be a unique index for the iword and pword functions. The expectation is that an application calls xalloc in order to obtain an index in the iword and pword arrays that can be used without fear of conflict.
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.
|
protectedinherited |
ios_base data members (doc me)
Definition at line 467 of file ios_base.h.
|
protectedinherited |
ios_base data members (doc me)
Definition at line 466 of file ios_base.h.
|
protectedinherited |
|
protectedinherited |
ios_base data members (doc me)
Definition at line 464 of file ios_base.h.
|
protectedinherited |
ios_base data members (doc me)
Definition at line 468 of file ios_base.h.
|
protectedinherited |
ios_base data members (doc me)
Definition at line 465 of file ios_base.h.
|
staticinherited |
A mask of left|right|internal. Useful for the 2-arg form of setf
.
Definition at line 318 of file ios_base.h.
|
staticinherited |
Seek to end before each write.
Definition at line 372 of file ios_base.h.
|
staticinherited |
Open and seek to end immediately after opening.
Definition at line 375 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::open().
|
staticinherited |
Indicates a loss of integrity in an input or output sequence (such as an irrecoverable read error from a file).
Definition at line 342 of file ios_base.h.
|
staticinherited |
A mask of dec|oct|hex. Useful for the 2-arg form of setf
.
Definition at line 321 of file ios_base.h.
|
staticinherited |
Request a seek relative to the beginning of the stream.
Definition at line 404 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::seekpos().
|
staticinherited |
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 380 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::showmanyc().
|
staticinherited |
Insert/extract bool
in alphabetic rather than numeric format.
Definition at line 266 of file ios_base.h.
|
staticinherited |
Request a seek relative to the current position within the sequence.
Definition at line 407 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), std::basic_filebuf< _CharT, _Traits >::pbackfail(), and std::basic_filebuf< _CharT, _Traits >::seekoff().
|
staticinherited |
Converts integer input or generates integer output in decimal base.
Definition at line 269 of file ios_base.h.
|
staticinherited |
Request a seek relative to the current end of the sequence.
Definition at line 410 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::open().
|
staticinherited |
Indicates that an input operation reached the end of an input sequence.
Definition at line 345 of file ios_base.h.
|
staticinherited |
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 350 of file ios_base.h.
|
staticinherited |
Generate floating-point output in fixed-point notation.
Definition at line 272 of file ios_base.h.
|
staticinherited |
A mask of scientific|fixed. Useful for the 2-arg form of setf
.
Definition at line 324 of file ios_base.h.
|
staticinherited |
Indicates all is well.
Definition at line 353 of file ios_base.h.
|
staticinherited |
Converts integer input or generates integer output in hexadecimal base.
Definition at line 275 of file ios_base.h.
|
staticinherited |
Open for input. Default for ifstream
and fstream.
Definition at line 383 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::pbackfail(), std::basic_filebuf< _CharT, _Traits >::showmanyc(), std::basic_filebuf< _CharT, _Traits >::underflow(), and std::basic_filebuf< _CharT, _Traits >::xsgetn().
|
staticinherited |
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 280 of file ios_base.h.
|
staticinherited |
Adds fill characters on the right (final positions) of certain generated output. (I.e., the thing you print is flush left.)
Definition at line 284 of file ios_base.h.
|
staticinherited |
Converts integer input or generates integer output in octal base.
Definition at line 287 of file ios_base.h.
|
staticinherited |
Open for output. Default for ofstream
and fstream.
Definition at line 386 of file ios_base.h.
Referenced by std::basic_filebuf< _CharT, _Traits >::overflow(), and std::basic_filebuf< _CharT, _Traits >::xsputn().
|
staticinherited |
Adds fill characters on the left (initial positions) of certain generated output. (I.e., the thing you print is flush right.)
Definition at line 291 of file ios_base.h.
|
staticinherited |
Generates floating-point output in scientific notation.
Definition at line 294 of file ios_base.h.
|
staticinherited |
Generates a prefix indicating the numeric base of generated integer output.
Definition at line 298 of file ios_base.h.
|
staticinherited |
Generates a decimal-point character unconditionally in generated floating-point output.
Definition at line 302 of file ios_base.h.
|
staticinherited |
Generates a + sign in non-negative generated numeric output.
Definition at line 305 of file ios_base.h.
|
staticinherited |
Skips leading white space before certain input operations.
Definition at line 308 of file ios_base.h.
|
staticinherited |
Open for input. Default for ofstream
.
Definition at line 389 of file ios_base.h.
|
staticinherited |
Flushes output after each output operation.
Definition at line 311 of file ios_base.h.
|
staticinherited |
Replaces certain lowercase letters with their uppercase equivalents in generated output.
Definition at line 315 of file ios_base.h.