#include <ios_base.h>
Inheritance diagram for std::ios_base:
Public Types | |
typedef _Ios_Fmtflags | fmtflags |
This is a bitmask type. | |
typedef _Ios_Iostate | iostate |
This is a bitmask type. | |
typedef _Ios_Openmode | openmode |
This is a bitmask type. | |
typedef _Ios_Seekdir | seekdir |
This is an enumerated type. | |
typedef void(* | event_callback )(event, ios_base &, int) |
enum | event |
Public Member Functions | |
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 | imbue (const locale &__loc) |
Setting a new locale. | |
locale | getloc () const |
Locale access. | |
long & | iword (int __ix) |
void *& | pword (int __ix) |
~ios_base () | |
Static Public Member Functions | |
bool | sync_with_stdio (bool __sync=true) |
Interaction with the standard C I/O objects. | |
int | xalloc () throw () |
Static Public Attributes | |
const fmtflags | boolalpha |
Insert/extract bool in alphabetic rather than numeric format. | |
const fmtflags | dec |
Converts integer input or generates integer output in decimal base. | |
const fmtflags | fixed |
Generate floating-point output in fixed-point notation. | |
const fmtflags | hex |
Converts integer input or generates integer output in hexadecimal base. | |
const fmtflags | internal |
Adds fill characters at a designated internal point in certain generated output, or identical to right if no such point is designated. | |
const fmtflags | left |
Adds fill characters on the right (final positions) of certain generated output. (I.e., the thing you print is flush left.). | |
const fmtflags | oct |
Converts integer input or generates integer output in octal base. | |
const fmtflags | right |
Adds fill characters on the left (initial positions) of certain generated output. (I.e., the thing you print is flush right.). | |
const fmtflags | scientific |
Generates floating-point output in scientific notation. | |
const fmtflags | showbase |
Generates a prefix indicating the numeric base of generated integer output. | |
const fmtflags | showpoint |
Generates a decimal-point character unconditionally in generated floating-point output. | |
const fmtflags | showpos |
Generates a + sign in non-negative generated numeric output. | |
const fmtflags | skipws |
Skips leading white space before certain input operations. | |
const fmtflags | unitbuf |
Flushes output after each output operation. | |
const fmtflags | uppercase |
Replaces certain lowercase letters with their uppercase equivalents in generated output. | |
const fmtflags | adjustfield |
A mask of left|right|internal. Useful for the 2-arg form of setf . | |
const fmtflags | basefield |
A mask of dec|oct|hex. Useful for the 2-arg form of setf . | |
const fmtflags | floatfield |
A mask of scientific|fixed. Useful for the 2-arg form of setf . | |
const iostate | badbit |
Indicates a loss of integrity in an input or output sequence (such as an irrecoverable read error from a file). | |
const iostate | eofbit |
Indicates that an input operation reached the end of an input sequence. | |
const iostate | failbit |
Indicates that an input operation failed to read the expected characters, or that an output operation failed to generate the desired characters. | |
const iostate | goodbit |
Indicates all is well. | |
const openmode | app |
Seek to end before each write. | |
const openmode | ate |
Open and seek to end immediately after opening. | |
const openmode | binary |
Perform input and output in binary mode (as opposed to text mode). This is probably not what you think it is; see http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#3 and http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#7 for more. | |
const openmode | in |
Open for input. Default for ifstream and fstream. | |
const openmode | out |
Open for output. Default for ofstream and fstream. | |
const openmode | trunc |
Open for input. Default for ofstream . | |
const seekdir | beg |
Request a seek relative to the beginning of the stream. | |
const seekdir | cur |
Request a seek relative to the current position within the sequence. | |
const seekdir | end |
Request a seek relative to the current end of the sequence. |
This class defines everything that can be defined about I/O that does not depend on the type of characters being input or output. Most people will only see ios_base
when they need to specify the full name of the various I/O flags (e.g., the openmodes).
Definition at line 160 of file ios_base.h.
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Definition at line 357 of file ios_base.h. |
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This is a bitmask type.
Definition at line 214 of file ios_base.h. |
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This is a bitmask type.
Definition at line 271 of file ios_base.h. |
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This is a bitmask type.
Definition at line 298 of file ios_base.h. |
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This is an enumerated type.
Definition at line 325 of file ios_base.h. |
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Definition at line 347 of file ios_base.h. |
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Destroys local storage and [XXX does something with callbacks]. |
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Setting new format flags all at once.
Definition at line 484 of file ios_base.h. |
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Access to format flags.
Definition at line 474 of file ios_base.h. Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::basic_ostream< _CharT, _Traits >::operator<<(), std::basic_ostream< char >::operator<<(), std::basic_istream< _CharT, _Traits >::sentry::sentry(), and std::basic_ostream< _CharT, _Traits >::sentry::~sentry(). |
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Locale access.
imbue(loc) has previously been called, then this function returns loc . Otherwise, it returns a copy of std::locale() , the global C++ locale.
Definition at line 616 of file ios_base.h. Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::operator>>(), and std::ws(). |
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Setting a new locale.
Reimplemented in std::basic_ios< _CharT, _Traits >, and std::basic_ios< char, _Traits >. |
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Definition at line 629 of file ios_base.h. |
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Changing flags.
Definition at line 552 of file ios_base.h. |
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Flags access.
Definition at line 544 of file ios_base.h. Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(). |
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Definition at line 640 of file ios_base.h. |
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Setting new format flags.
& mask. An example mask is ios_base::adjustfield .
Definition at line 517 of file ios_base.h. |
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Setting new format flags.
Definition at line 500 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(). |
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Interaction with the standard C I/O objects.
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Clearing format flags.
Definition at line 532 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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Changing flags.
Definition at line 574 of file ios_base.h. |
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Flags access.
Definition at line 566 of file ios_base.h. Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::operator<<(), and std::operator>>(). |
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A mask of left|right|internal. Useful for the 2-arg form of
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Seek to end before each write.
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Open and seek to end immediately after opening.
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Indicates a loss of integrity in an input or output sequence (such as an irrecoverable read error from a file).
Definition at line 134 of file ios.cc. Referenced by std::basic_ios< char, _Traits >::bad(), std::basic_ios< _CharT, _Traits >::clear(), std::basic_ios< char, _Traits >::fail(), and std::basic_ios< _CharT, _Traits >::init(). |
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A mask of dec|oct|hex. Useful for the 2-arg form of
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Request a seek relative to the beginning of the stream.
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Perform input and output in binary mode (as opposed to text mode). This is probably not what you think it is; see http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#3 and http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#7 for more.
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Insert/extract
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Request a seek relative to the current position within the sequence.
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Converts integer input or generates integer output in decimal base.
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Request a seek relative to the current end of the sequence.
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Indicates that an input operation reached the end of an input sequence.
Definition at line 135 of file ios.cc. Referenced by std::basic_ios< char, _Traits >::eof(). |
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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 136 of file ios.cc. Referenced by std::basic_ios< char, _Traits >::fail(). |
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Generate floating-point output in fixed-point notation.
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A mask of scientific|fixed. Useful for the 2-arg form of
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Indicates all is well.
Definition at line 137 of file ios.cc. Referenced by std::basic_ios< _CharT, _Traits >::init(). |
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Converts integer input or generates integer output in hexadecimal base.
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Open for input. Default for
Definition at line 142 of file ios.cc. Referenced by std::basic_istringstream< _CharT, _Traits, _Alloc >::basic_istringstream(). |
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Adds fill characters at a designated internal point in certain generated output, or identical to
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Adds fill characters on the right (final positions) of certain generated output. (I.e., the thing you print is flush left.).
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Converts integer input or generates integer output in octal base.
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Open for output. Default for
Definition at line 143 of file ios.cc. Referenced by std::basic_ostringstream< _CharT, _Traits, _Alloc >::basic_ostringstream(). |
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Adds fill characters on the left (initial positions) of certain generated output. (I.e., the thing you print is flush right.).
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Generates floating-point output in scientific notation.
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Generates a prefix indicating the numeric base of generated integer output.
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Generates a decimal-point character unconditionally in generated floating-point output.
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Generates a + sign in non-negative generated numeric output.
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Skips leading white space before certain input operations.
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Open for input. Default for
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Flushes output after each output operation.
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Replaces certain lowercase letters with their uppercase equivalents in generated output.
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