Inheritance diagram for std::basic_istream< CharT, Traits >:
Public Types | |
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 |
typedef basic_streambuf< CharT, Traits > | streambuf_type |
typedef basic_ios< CharT, Traits > | __ios_type |
typedef basic_istream< CharT, Traits > | __istream_type |
typedef istreambuf_iterator< CharT, Traits > | __istreambuf_iter |
typedef num_get< CharT, __istreambuf_iter > | numget_type |
typedef ctype< CharT > | ctype_type |
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) |
enum | event |
typedef ostreambuf_iterator< CharT, Traits > | __ostreambuf_iter |
typedef num_put< CharT, __ostreambuf_iter > | numput_type |
Public Member Functions | |
basic_istream (streambuf_type *sb) | |
Base constructor. | |
virtual | ~basic_istream () |
Base destructor. | |
streamsize | gcount () const |
Character counting. | |
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. | |
void | M_setstate (iostate 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_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_ios & | copyfmt (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) |
__istream_type & | operator>> (__istream_type &(*__pf)(__istream_type &)) |
Interface for manipulators. | |
__istream_type & | operator>> (__ios_type &(*__pf)(__ios_type &)) |
Interface for manipulators. | |
__istream_type & | operator>> (ios_base &(*__pf)(ios_base &)) |
Interface for manipulators. | |
Arithmetic Extractors | |
All the operator>> functions (aka formatted 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 false. 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.
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) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (short &n) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (unsigned short &n) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (int &n) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (unsigned int &n) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (long &n) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (unsigned long &n) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (float &__f) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (double &__f) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (long double &__f) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (void *&__p) |
Basic arithmetic extractors. | |
__istream_type & | operator>> (streambuf_type *sb) |
Extracting into another streambuf. | |
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 () |
Simple extraction. | |
__istream_type & | get (char_type &c) |
Simple extraction. | |
__istream_type & | get (char_type *s, streamsize n, char_type __delim) |
Simple multiple-character extraction. | |
__istream_type & | get (char_type *s, streamsize n) |
Simple multiple-character extraction. | |
__istream_type & | get (streambuf_type &sb, char_type __delim) |
Extraction into another streambuf. | |
__istream_type & | get (streambuf_type &sb) |
Extraction into another streambuf. | |
__istream_type & | getline (char_type *s, streamsize n, char_type __delim) |
String extraction. | |
__istream_type & | getline (char_type *s, streamsize n) |
String extraction. | |
__istream_type & | ignore (streamsize n=1, int_type __delim=traits_type::eof()) |
Discarding characters. | |
int_type | peek () |
Looking ahead in the stream. | |
__istream_type & | read (char_type *s, streamsize n) |
Extraction without delimiters. | |
streamsize | readsome (char_type *s, streamsize n) |
Extraction until the buffer is exhausted, but no more. | |
__istream_type & | putback (char_type c) |
Unextracting a single character. | |
__istream_type & | unget () |
Unextracting the previous character. | |
int | sync () |
Synchronizing the stream buffer. | |
pos_type | tellg () |
Getting the current read position. | |
__istream_type & | seekg (pos_type) |
Changing the current read position. | |
__istream_type & | seekg (off_type, ios_base::seekdir) |
Changing the current read position. | |
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 |
designated. | |
static const fmtflags | left |
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 |
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 |
output. | |
static const fmtflags | showpoint |
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 |
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 |
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 |
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 |
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 | |
void | init (basic_streambuf< CharT, Traits > *sb) |
All setup is performed here. | |
bool | M_check_facet (const locale::facet *__f) const |
void | M_cache_locale (const locale &__loc) |
void | M_cache_facets (const locale &__loc) |
void | M_call_callbacks (event __ev) throw () |
void | M_dispose_callbacks (void) |
Words & | M_grow_words (int index) |
void | M_init () |
Protected Attributes | |
streamsize | M_gcount |
basic_ostream< CharT, Traits > * | M_tie |
char_type | M_fill |
bool | M_fill_init |
basic_streambuf< CharT, Traits > * | M_streambuf |
const ctype_type * | M_fctype |
const numput_type * | M_fnumput |
const numget_type * | M_fnumget |
Callback_list * | M_callbacks |
Words | M_word_zero |
Words | M_local_word [S_local_word_size] |
int | M_word_size |
Words * | M_word |
locale | M_ios_locale |
Static Protected Attributes | |
static const int | S_local_word_size |
Friends | |
class | sentry |
Classes | |
class | sentry |
Performs setup work for input streams. More... |
This is the base class for all input streams. It provides text formatting of all builtin types, and communicates with any class derived from basic_streambuf to do the actual input.
Definition at line 58 of file istream.
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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_ios< CharT, Traits >. Reimplemented in std::strstream, std::basic_ifstream< CharT, Traits >, std::basic_fstream< CharT, Traits >, std::basic_istringstream< CharT, Traits, Alloc >, and std::basic_stringstream< CharT, Traits, Alloc >. |
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Definition at line 355 of file ios_base.h. |
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This is a bitmask type.
Definition at line 212 of file ios_base.h. |
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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_ios< CharT, Traits >. Reimplemented in std::strstream, std::basic_ifstream< CharT, Traits >, std::basic_fstream< CharT, Traits >, std::basic_istringstream< CharT, Traits, Alloc >, and std::basic_stringstream< CharT, Traits, Alloc >. |
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This is a bitmask type.
Definition at line 269 of file ios_base.h. |
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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_ios< CharT, Traits >. Reimplemented in std::strstream, std::basic_ifstream< CharT, Traits >, std::basic_fstream< CharT, Traits >, std::basic_istringstream< CharT, Traits, Alloc >, and std::basic_stringstream< CharT, Traits, Alloc >. |
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This is a bitmask type.
Definition at line 296 of file ios_base.h. |
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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_ios< CharT, Traits >. Reimplemented in std::strstream, std::basic_ifstream< CharT, Traits >, std::basic_fstream< CharT, Traits >, std::basic_istringstream< CharT, Traits, Alloc >, and std::basic_stringstream< CharT, Traits, Alloc >. |
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This is an enumerated type.
Definition at line 323 of file ios_base.h. |
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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_ios< CharT, Traits >. Reimplemented in std::basic_ifstream< CharT, Traits >, std::basic_fstream< CharT, Traits >, std::basic_istringstream< CharT, Traits, Alloc >, and std::basic_stringstream< CharT, Traits, Alloc >. |
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Definition at line 345 of file ios_base.h. |
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Base constructor. This ctor is almost never called by the user directly, rather from derived classes' initialization lists, which pass a pointer to their own stream buffer. |
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Base destructor. This does very little apart from providing a virtual base dtor. |
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Fast error checking.
Definition at line 199 of file basic_ios.h. |
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[Re]sets the error state.
Definition at line 39 of file basic_ios.tcc. References std::__throw_ios_failure(), std::ios_base::badbit, and std::basic_ios< CharT, Traits >::exceptions(). Referenced by std::basic_ios< char, Traits >::exceptions(), std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< char, Traits >::setstate(). |
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Definition at line 61 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.
Definition at line 178 of file basic_ios.h. |
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Throwing exceptions on errors.
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. |
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Throwing exceptions on errors.
Definition at line 210 of file basic_ios.h. Referenced by std::basic_ios< CharT, Traits >::clear(), and std::basic_ios< CharT, Traits >::copyfmt(). |
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Fast error checking.
Definition at line 189 of file basic_ios.h. Referenced by std::basic_ios< char, Traits >::operator void *(), and std::basic_ios< char, Traits >::operator!(). |
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Sets a new "empty" character.
Definition at line 362 of file basic_ios.h. |
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Retreives the "empty" character.
Definition at line 342 of file basic_ios.h. Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::basic_ios< char, Traits >::fill(), std::basic_ostream< CharT, Traits >::operator<<(), and std::operator>>(). |
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Setting new format flags all at once.
Definition at line 482 of file ios_base.h. |
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Character counting.
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Extraction into another streambuf.
get (sb,widen('')). |
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Extraction into another streambuf.
If no characters are stored, failbit is set in the stream's error state. Definition at line 554 of file istream.tcc. References std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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Simple multiple-character extraction.
get (s,n,widen('')). |
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Simple multiple-character extraction.
If 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 515 of file istream.tcc. References std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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Simple extraction.
Definition at line 483 of file istream.tcc. References std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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Simple extraction.
Definition at line 452 of file istream.tcc. References std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). Referenced by std::basic_istream< char >::get(). |
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String extraction.
getline (s,n,widen('')). |
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String extraction.
If 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 593 of file istream.tcc. References std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). Referenced by std::basic_istream< char >::get(), and std::basic_istream< char >::getline(). |
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Fast error checking.
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(). |
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Discarding characters.
Definition at line 642 of file istream.tcc. References std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::goodbit, std::max(), std::min(), std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). Referenced by std::basic_istream< char >::getline(). |
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Moves to a 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++/22_locale/howto.html Reimplemented from std::ios_base. Definition at line 139 of file basic_ios.tcc. References std::ios_base::imbue(). 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. 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_fstream< CharT, Traits >::basic_fstream(), std::basic_ifstream< CharT, Traits >::basic_ifstream(), std::basic_ios< char, Traits >::basic_ios(), std::basic_istream< char >::basic_istream(), std::basic_istringstream< CharT, Traits, Alloc >::basic_istringstream(), std::basic_ofstream< CharT, Traits >::basic_ofstream(), std::basic_ostream< char >::basic_ostream(), std::basic_ostringstream< CharT, Traits, Alloc >::basic_ostringstream(), std::basic_stringstream< CharT, Traits, Alloc >::basic_stringstream(), and std::ios_base::Init::S_ios_create(). |
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Definition at line 637 of file ios_base.h. |
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Locale access.
Definition at line 624 of file ios_base.h. |
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Squeezes characters.
char_type to a character of char , if possible.Returns the result of 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>>(). |
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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. |
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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. |
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Extracting into another streambuf.
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 428 of file istream.tcc. References std::ios_base::failbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 405 of file istream.tcc. References std::ios_base::badbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 382 of file istream.tcc. References std::ios_base::badbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 359 of file istream.tcc. References std::ios_base::badbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 336 of file istream.tcc. References std::ios_base::badbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 265 of file istream.tcc. References std::ios_base::badbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 242 of file istream.tcc. References std::ios_base::badbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 219 of file istream.tcc. References std::ios_base::badbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 187 of file istream.tcc. References std::ios_base::badbit, std::ios_base::failbit, std::ios_base::goodbit, std::max(), std::min(), and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 164 of file istream.tcc. References std::ios_base::badbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 132 of file istream.tcc. References std::ios_base::badbit, std::ios_base::failbit, std::ios_base::goodbit, std::max(), std::min(), and std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 109 of file istream.tcc. References std::ios_base::badbit, std::ios_base::goodbit, and std::basic_ios< CharT, Traits >::setstate(). |
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Interface for manipulators.
Manuipulators such as Definition at line 100 of file istream.tcc. |
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Interface for manipulators.
Manuipulators such as Definition at line 91 of file istream.tcc. |
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Interface for manipulators.
Manuipulators such as Definition at line 85 of file istream.tcc. |
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Looking ahead in the stream.
good() is false, returns traits::eof() . Otherwise reads but does not extract the next input character.
Definition at line 677 of file istream.tcc. References std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::goodbit, std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). Referenced by std::basic_istream< char >::getline(). |
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Changing flags.
Definition at line 550 of file ios_base.h. |
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Flags access.
Definition at line 542 of file ios_base.h. Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::num_put< CharT, OutIter >::M_convert_float(), std::operator<<(), and std::operator>>(). |
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Unextracting a single character.
rdbuf() is not null, calls rdbuf()->sputbackc(c) .
If
Definition at line 753 of file istream.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::basic_istream< char >::getline(), and std::operator>>(). |
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Definition at line 648 of file ios_base.h. |
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Changing the underlying 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 Definition at line 51 of file basic_ios.tcc. References std::basic_ios< CharT, Traits >::clear(). |
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Returns the error state of the stream buffer.
Definition at line 125 of file basic_ios.h. Referenced by std::basic_ios< char, Traits >::good(). |
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Extraction without delimiters.
good() , extracts characters and stores them into s until one of the following happens:
Definition at line 702 of file istream.tcc. References std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::failbit, std::ios_base::goodbit, std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). Referenced by std::basic_istream< char >::getline(). |
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Extraction until the buffer is exhausted, but no more.
rdbuf()->in_avail() , called A here:
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 726 of file istream.tcc. References std::ios_base::badbit, std::ios_base::eofbit, std::ios_base::goodbit, std::min(), std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). Referenced by std::basic_istream< char >::getline(). |
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Changing the current read position.
fail() is not true, calls rdbuf()->pubseekoff(off,dir) . If that function fails, sets failbit.
Definition at line 888 of file istream.tcc. References std::ios_base::failbit, std::ios_base::goodbit, and std::ios_base::in. |
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Changing the current read position.
fail() is not true, calls rdbuf()->pubseekpos(pos) . If that function fails, sets failbit.
Definition at line 861 of file istream.tcc. References std::ios_base::failbit, std::ios_base::goodbit, and std::ios_base::in. Referenced by std::basic_istream< char >::getline(). |
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Setting new format flags.
& mask. An example mask is ios_base::adjustfield .
Definition at line 515 of file ios_base.h. |
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Setting new format flags.
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::operator>>(), std::right(), std::scientific(), std::showbase(), std::showpoint(), std::showpos(), std::skipws(), std::unitbuf(), and std::uppercase(). |
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Synchronizing the stream buffer.
rdbuf() is a null pointer, returns -1.
Otherwise, calls Otherwise, returns 0.
Definition at line 811 of file istream.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::basic_istream< char >::getline(). |
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Interaction with the standard C I/O objects.
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Getting the current read position.
fail() is not false, returns pos_type (-1) to indicate failure. Otherwise returns rdbuf()->pubseekoff(0,cur,in) .
Definition at line 842 of file istream.tcc. References std::ios_base::badbit, std::ios_base::cur, and std::ios_base::in. Referenced by std::basic_istream< char >::getline(). |
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Ties this stream to an output stream.
Definition at line 294 of file basic_ios.h. |
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Fetches the current tied stream.
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(). |
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Unextracting the previous character.
rdbuf() is not null, calls rdbuf()->sungetc(c) .
If
Definition at line 782 of file istream.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::basic_istream< char >::getline(). |
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Clearing 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(). |
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Widens characters.
char to a character of char_type .Returns the result of 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::getline(), and std::operator<<(). |
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Changing flags.
Definition at line 572 of file ios_base.h. |
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Flags access.
Definition at line 564 of file ios_base.h. Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::money_put< CharT, OutIter >::do_put(), std::num_put< CharT, OutIter >::do_put(), std::num_put< CharT, OutIter >::M_convert_float(), std::num_put< CharT, OutIter >::M_convert_int(), std::num_put< CharT, OutIter >::M_insert(), and std::operator>>(). |
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A mask of left|right|internal. Useful for the 2-arg form of
Definition at line 251 of file ios_base.h. Referenced by std::internal(), std::left(), std::right(), and std::__pad< CharT, Traits >::S_pad(). |
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Seek to end before each write.
Definition at line 298 of file ios_base.h. Referenced by std::basic_stringbuf< CharT, Traits, Alloc >::M_stringbuf_init(). |
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Open and seek to end immediately after opening.
Definition at line 300 of file ios_base.h. Referenced by std::basic_stringbuf< CharT, Traits, Alloc >::M_stringbuf_init(), and std::basic_filebuf< CharT, Traits >::open(). |
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as an irrecoverable read error from a file).
Definition at line 272 of file ios_base.h. Referenced by std::basic_ios< char, Traits >::bad(), std::basic_ios< CharT, Traits >::clear(), std::basic_ios< char, Traits >::fail(), 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::ios_base::M_grow_words(), std::basic_ostream< CharT, Traits >::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 >::sync(), std::basic_istream< CharT, Traits >::tellg(), std::basic_ostream< CharT, Traits >::tellp(), std::basic_istream< CharT, Traits >::unget(), std::basic_ostream< CharT, Traits >::write(), and std::basic_ostream< CharT, Traits >::sentry::~sentry(). |
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A mask of dec|oct|hex. Useful for the 2-arg form of
Definition at line 253 of file ios_base.h. Referenced by std::dec(), std::num_get< CharT, InIter >::do_get(), std::num_put< CharT, OutIter >::do_put(), std::hex(), std::int_to_char(), std::num_get< CharT, InIter >::M_extract_int(), std::num_put< CharT, OutIter >::M_group_int(), std::num_put< CharT, OutIter >::M_widen_int(), std::oct(), std::basic_ostream< CharT, Traits >::operator<<(), std::basic_ostream< char >::operator<<(), and std::num_base::S_format_int(). |
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Request a seek relative to the beginning of the stream.
Definition at line 325 of file ios_base.h. Referenced by std::strstreambuf::seekoff(), std::strstreambuf::seekpos(), and std::basic_filebuf< CharT, Traits >::seekpos(). |
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http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#7 for more.
Definition at line 305 of file ios_base.h. |
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Insert/extract
Definition at line 214 of file ios_base.h. Referenced by std::boolalpha(), std::num_put< CharT, OutIter >::do_put(), std::num_get< CharT, InIter >::M_extract_int(), and std::noboolalpha(). |
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Request a seek relative to the current position within the sequence.
Definition at line 327 of file ios_base.h. Referenced by std::basic_filebuf< CharT, Traits >::M_really_overflow(), std::basic_filebuf< CharT, Traits >::M_underflow_common(), std::basic_filebuf< CharT, Traits >::pbackfail(), std::strstreambuf::seekoff(), std::basic_stringbuf< CharT, Traits, Alloc >::seekoff(), std::basic_filebuf< CharT, Traits >::seekoff(), std::basic_filebuf< CharT, enc_char_traits< CharT > >::sync(), std::basic_istream< CharT, Traits >::tellg(), and std::basic_ostream< CharT, Traits >::tellp(). |
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Converts integer input or generates integer output in decimal base.
Definition at line 216 of file ios_base.h. Referenced by std::dec(), and std::ios_base::M_init(). |
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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(), std::strstreambuf::seekoff(), and std::basic_stringbuf< CharT, Traits, Alloc >::seekoff(). |
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Indicates that an input operation reached the end of an input sequence.
Definition at line 274 of file ios_base.h. Referenced by 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_ios< char, Traits >::eof(), std::basic_istream< CharT, Traits >::get(), std::basic_istream< CharT, Traits >::getline(), std::basic_istream< CharT, Traits >::ignore(), std::num_get< CharT, InIter >::M_extract_float(), std::num_get< CharT, InIter >::M_extract_int(), std::operator>>(), std::basic_istream< CharT, Traits >::peek(), std::basic_istream< CharT, Traits >::read(), std::basic_istream< CharT, Traits >::readsome(), and std::basic_istream< CharT, Traits >::sentry::sentry(). |
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desired characters.
Definition at line 278 of file ios_base.h. Referenced by std::basic_fstream< CharT, Traits >::close(), std::basic_ofstream< CharT, Traits >::close(), std::basic_ifstream< CharT, Traits >::close(), std::num_get< CharT, InIter >::do_get(), std::basic_ios< char, Traits >::fail(), std::basic_istream< CharT, Traits >::get(), std::basic_istream< CharT, Traits >::getline(), std::num_get< CharT, InIter >::M_extract_float(), std::num_get< CharT, InIter >::M_extract_int(), std::basic_fstream< CharT, Traits >::open(), std::basic_ofstream< CharT, Traits >::open(), std::basic_ifstream< CharT, Traits >::open(), std::basic_ostream< CharT, Traits >::operator<<(), std::basic_istream< CharT, Traits >::operator>>(), std::operator>>(), std::basic_istream< CharT, Traits >::read(), std::basic_istream< CharT, Traits >::seekg(), std::basic_ostream< CharT, Traits >::seekp(), and std::basic_ostream< CharT, Traits >::sentry::sentry(). |
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Generate floating-point output in fixed-point notation.
Definition at line 218 of file ios_base.h. Referenced by std::fixed(), std::num_put< CharT, OutIter >::M_convert_float(), and std::num_base::S_format_float(). |
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A mask of scientific|fixed. Useful for the 2-arg form of
Definition at line 255 of file ios_base.h. Referenced by std::fixed(), std::num_base::S_format_float(), and std::scientific(). |
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Indicates all is well.
Definition at line 280 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::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 >::sentry::sentry(), std::basic_istream< CharT, Traits >::sync(), std::basic_istream< CharT, Traits >::unget(), and std::basic_ostream< CharT, Traits >::write(). |
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Converts integer input or generates integer output in hexadecimal base.
Definition at line 220 of file ios_base.h. Referenced by std::num_get< CharT, InIter >::do_get(), std::num_put< CharT, OutIter >::do_put(), std::hex(), std::int_to_char(), std::num_get< CharT, InIter >::M_extract_int(), std::num_put< CharT, OutIter >::M_group_int(), std::num_put< CharT, OutIter >::M_widen_int(), std::basic_ostream< CharT, Traits >::operator<<(), std::basic_ostream< char >::operator<<(), and std::num_base::S_format_int(). |
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Open for input. Default for
Definition at line 307 of file ios_base.h. Referenced by std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_is_indeterminate(), std::basic_stringbuf< CharT, Traits, Alloc >::M_really_sync(), std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_set_determinate(), std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_set_indeterminate(), std::basic_filebuf< CharT, Traits >::M_underflow_common(), std::basic_ifstream< CharT, Traits >::open(), std::basic_filebuf< CharT, Traits >::pbackfail(), std::ios_base::Init::S_ios_create(), std::basic_istream< CharT, Traits >::seekg(), std::strstreambuf::seekoff(), std::basic_stringbuf< CharT, Traits, Alloc >::seekoff(), std::basic_filebuf< CharT, Traits >::seekoff(), std::basic_stringbuf< CharT, Traits, Alloc >::seekpos(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::setg(), std::basic_filebuf< CharT, Traits >::showmanyc(), and std::basic_istream< CharT, Traits >::tellg(). |
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designated.
Definition at line 224 of file ios_base.h. Referenced by std::num_get< CharT, InIter >::do_get(), std::num_put< CharT, OutIter >::do_put(), std::internal(), and std::__pad< CharT, Traits >::S_pad(). |
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generated output. (I.e., the thing you print is flush left.)
Definition at line 227 of file ios_base.h. Referenced by std::left(), and std::__pad< CharT, Traits >::S_pad(). |
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Converts integer input or generates integer output in octal base.
Definition at line 229 of file ios_base.h. Referenced by std::int_to_char(), std::num_get< CharT, InIter >::M_extract_int(), std::num_put< CharT, OutIter >::M_group_int(), std::num_put< CharT, OutIter >::M_widen_int(), std::oct(), std::basic_ostream< CharT, Traits >::operator<<(), std::basic_ostream< char >::operator<<(), and std::num_base::S_format_int(). |
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Open for output. Default for
Definition at line 309 of file ios_base.h. Referenced by std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_is_indeterminate(), std::basic_stringbuf< CharT, Traits, Alloc >::M_really_sync(), std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_set_determinate(), std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_set_indeterminate(), std::basic_filebuf< CharT, Traits >::M_underflow_common(), std::basic_ofstream< CharT, Traits >::open(), std::basic_stringbuf< CharT, Traits, Alloc >::overflow(), std::basic_filebuf< CharT, Traits >::overflow(), std::basic_filebuf< CharT, Traits >::pbackfail(), std::ios_base::Init::S_ios_create(), std::strstreambuf::seekoff(), std::basic_stringbuf< CharT, Traits, Alloc >::seekoff(), std::basic_filebuf< CharT, Traits >::seekoff(), std::basic_ostream< CharT, Traits >::seekp(), std::basic_stringbuf< CharT, Traits, Alloc >::seekpos(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::setp(), std::basic_stringbuf< CharT, Traits, Alloc >::str(), std::basic_ostream< CharT, Traits >::tellp(), and std::basic_streambuf< CharT, enc_char_traits< CharT > >::uflow(). |
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generated output. (I.e., the thing you print is flush right.)
Definition at line 232 of file ios_base.h. Referenced by std::right(). |
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Generates floating-point output in scientific notation.
Definition at line 234 of file ios_base.h. Referenced by std::num_base::S_format_float(), and std::scientific(). |
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output.
Definition at line 237 of file ios_base.h. Referenced by std::money_get< CharT, InIter >::do_get(), std::num_get< CharT, InIter >::do_get(), std::num_put< CharT, OutIter >::do_put(), std::int_to_char(), std::num_put< CharT, OutIter >::M_group_int(), std::num_put< CharT, OutIter >::M_widen_int(), std::noshowbase(), std::num_base::S_format_int(), and std::showbase(). |
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floating-point output.
Definition at line 240 of file ios_base.h. Referenced by std::noshowpoint(), std::num_base::S_format_float(), and std::showpoint(). |
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Generates a + sign in non-negative generated numeric output.
Definition at line 242 of file ios_base.h. Referenced by std::num_get< CharT, InIter >::do_get(), std::num_put< CharT, OutIter >::do_put(), std::int_to_char(), std::noshowpos(), std::num_base::S_format_float(), std::num_base::S_format_int(), and std::showpos(). |
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Skips leading white space before certain input operations.
Definition at line 244 of file ios_base.h. Referenced by std::ios_base::M_init(), std::noskipws(), std::basic_istream< CharT, Traits >::sentry::sentry(), and std::skipws(). |
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Open for input. Default for
Definition at line 311 of file ios_base.h. |
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Flushes output after each output operation.
Definition at line 246 of file ios_base.h. Referenced by std::nounitbuf(), std::ios_base::Init::S_ios_create(), std::unitbuf(), and std::basic_ostream< CharT, Traits >::sentry::~sentry(). |
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in generated output.
Definition at line 249 of file ios_base.h. Referenced by std::num_get< CharT, InIter >::do_get(), std::num_put< CharT, OutIter >::do_put(), std::int_to_char(), std::nouppercase(), std::num_base::S_format_float(), std::num_base::S_format_int(), and std::uppercase(). |