Public Types | |
typedef char | 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< char, Traits > | streambuf_type |
typedef basic_ios< char, Traits > | __ios_type |
typedef basic_ostream< char, Traits > | __ostream_type |
typedef num_put< char, ostreambuf_iterator< char, Traits > > | num_put_type |
typedef ctype< char > | ctype_type |
typedef num_get< char, istreambuf_iterator< char, Traits > > | num_get_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) |
The type of an event callback function. | |
enum | event |
The set of events that may be passed to an event callback. More... | |
Public Member Functions | |
ostrstream () | |
ostrstream (char *, int, ios_base::openmode=ios_base::out) | |
virtual | ~ostrstream () |
strstreambuf * | rdbuf () const |
Accessing the underlying buffer. | |
void | freeze (bool=true) |
char * | str () |
int | pcount () const |
__ostream_type & | operator<< (__ostream_type &(*__pf)(__ostream_type &)) |
Interface for manipulators. | |
__ostream_type & | operator<< (long n) |
Basic arithmetic inserters. | |
__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<< (float __f) |
__ostream_type & | operator<< (streambuf_type *sb) |
Extracting from another streambuf. | |
__ostream_type & | put (char_type c) |
Simple insertion. | |
void | M_write (const char_type *s, streamsize n) |
__ostream_type & | write (const char_type *s, streamsize n) |
Character string insertion. | |
__ostream_type & | flush () |
Synchronizing the stream buffer. | |
pos_type | tellp () |
Getting the current write position. | |
__ostream_type & | seekp (pos_type) |
Changing the current write position. | |
__ostream_type & | seekp (off_type, ios_base::seekdir) |
Changing the current write position. | |
operator void * () const | |
The quick-and-easy status check. | |
bool | operator! () const |
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< char, Traits > * | tie () const |
Fetches the current tied stream. | |
basic_ostream< char, Traits > * | tie (basic_ostream< char, Traits > *__tiestr) |
Ties this stream to an output stream. | |
basic_streambuf< char, Traits > * | rdbuf (basic_streambuf< char, Traits > *sb) |
Changing the underlying buffer. | |
basic_ios & | copyfmt (const basic_ios &__rhs) |
Copies fields of __rhs into this. | |
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) |
Add the callback __fn with parameter 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) |
Access to integer array. | |
void *& | pword (int __ix) |
Access to void pointer array. | |
Static Public Member Functions | |
static bool | sync_with_stdio (bool sync=true) |
Interaction with the standard C I/O objects. | |
static int | xalloc () throw () |
Access to unique indices. | |
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< char, Traits > *sb) |
All setup is performed here. | |
void | M_call_callbacks (event __ev) throw () |
void | M_dispose_callbacks (void) |
Words & | M_grow_words (int index, bool __iword) |
void | M_init () |
Protected Attributes | |
basic_ostream< char, Traits > * | M_tie |
char_type | M_fill |
bool | M_fill_init |
basic_streambuf< char, Traits > * | M_streambuf |
const ctype_type * | M_ctype |
const num_put_type * | M_num_put |
const num_get_type * | M_num_get |
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 |
streamsize | M_precision |
streamsize | M_width |
fmtflags | M_flags |
iostate | M_exception |
iostate | M_streambuf_state |
Static Protected Attributes | |
static const int | S_local_word_size |
Private Attributes | |
strstreambuf | M_buf |
Friends | |
class | sentry |
Definition at line 141 of file strstream.
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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< char, Traits >. |
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The type of an event callback function.
Definition at line 437 of file ios_base.h. |
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This is a bitmask type.
Definition at line 253 of file ios_base.h. |
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This is a bitmask type.
Definition at line 328 of file ios_base.h. |
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This is a bitmask type.
Definition at line 359 of file ios_base.h. |
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This is an enumerated type.
Definition at line 392 of file ios_base.h. |
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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 420 of file ios_base.h. |
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Fast error checking.
Definition at line 197 of file basic_ios.h. References std::ios_base::badbit. |
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[Re]sets the error state.
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Copies fields of __rhs into this.
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Fast error checking.
Definition at line 176 of file basic_ios.h. References std::ios_base::eofbit. |
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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 243 of file basic_ios.h. References std::basic_ios< CharT, Traits >::clear(). |
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Throwing exceptions on errors.
Definition at line 208 of file basic_ios.h. |
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Fast error checking.
Definition at line 187 of file basic_ios.h. References std::ios_base::badbit, and std::ios_base::failbit. |
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Sets a new "empty" character.
Definition at line 376 of file basic_ios.h. References std::basic_ios< CharT, Traits >::fill(). |
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Retreives the "empty" character.
Definition at line 356 of file basic_ios.h. References std::basic_ios< CharT, Traits >::widen(). |
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Setting new format flags all at once.
Definition at line 560 of file ios_base.h. |
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Access to format flags.
Definition at line 550 of file ios_base.h. Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::num_get< CharT, InIter >::do_get(), std::num_put< CharT, OutIter >::do_put(), std::money_get< CharT, InIter >::M_extract(), std::num_get< CharT, InIter >::M_extract_int(), std::num_put< CharT, OutIter >::M_group_int(), std::money_put< CharT, OutIter >::M_insert(), std::num_put< CharT, OutIter >::M_insert_float(), std::num_put< CharT, OutIter >::M_insert_int(), std::basic_ostream< CharT, Traits >::operator<<(), std::basic_ostream< char >::operator<<(), std::num_base::S_format_float(), std::__pad< CharT, Traits >::S_pad(), and std::basic_istream< CharT, Traits >::sentry::sentry(). |
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Synchronizing the stream buffer.
rdbuf() is a null pointer, changes nothing.
Otherwise, calls |
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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 692 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.
Definition at line 166 of file basic_ios.h. References std::basic_ios< CharT, Traits >::rdstate(). |
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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. |
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All setup is performed here. This is called from the public constructor. It is not virtual and cannot be redefined. |
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Access to integer array.
The implementation reserves several indices. You should use xalloc to obtain an index that is safe to use. Also note that since the array can grow dynamically, it is not safe to hold onto the reference. Definition at line 736 of file ios_base.h. |
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Locale access.
Definition at line 702 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 |
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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 107 of file basic_ios.h. References std::basic_ios< CharT, Traits >::fail(). |
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Extracting from another streambuf.
If sb is NULL, the stream will set failbit in its error state.
Characters are extracted from sb and inserted into
If the function inserts no characters, failbit is set. |
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Basic arithmetic inserters.
num_get facet) to perform numeric formatting. |
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Interface for manipulators.
Manuipulators such as |
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Changing flags.
Definition at line 628 of file ios_base.h. |
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Flags access.
Definition at line 620 of file ios_base.h. Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::num_put< CharT, OutIter >::M_insert_float(), and std::operator>>(). |
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Simple insertion.
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Access to void pointer array.
The implementation reserves several indices. You should use xalloc to obtain an index that is safe to use. Also note that since the array can grow dynamically, it is not safe to hold onto the reference. Definition at line 757 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
std::fstream foo; // or some other derived type std::streambuf* p = .....; foo.ios::rdbuf(p); // ios == basic_ios<char> |
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Accessing the underlying buffer.
Reimplemented from std::basic_ios< char, Traits >. Definition at line 375 of file strstream.cc. |
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Returns the error state of the stream buffer.
Definition at line 123 of file basic_ios.h. |
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Add the callback __fn with parameter index.
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Changing the current write position.
fail() is not true, calls rdbuf()->pubseekoff(off,dir) . If that function fails, sets failbit. |
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Changing the current write position.
fail() is not true, calls rdbuf()->pubseekpos(pos) . If that function fails, sets failbit. |
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Setting new format flags.
& mask. An example mask is ios_base::adjustfield .
Definition at line 593 of file ios_base.h. |
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Setting new format flags.
Definition at line 576 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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Sets additional flags in the error state.
Definition at line 143 of file basic_ios.h. References std::basic_ios< CharT, Traits >::clear(). |
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Interaction with the standard C I/O objects.
Definition at line 148 of file ios_init.cc. References __gnu_internal::buf_cerr, __gnu_internal::buf_cerr_sync, __gnu_internal::buf_cin, __gnu_internal::buf_cin_sync, __gnu_internal::buf_cout, __gnu_internal::buf_cout_sync, std::cerr, std::cin, std::clog, std::cout, std::ios_base::in, and std::ios_base::out. |
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Getting the current write position.
fail() is not false, returns pos_type (-1) to indicate failure. Otherwise returns rdbuf()->pubseekoff(0,cur,out) . |
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Ties this stream to an output stream.
Definition at line 293 of file basic_ios.h. |
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Fetches the current tied stream.
std::cin is tied to std::cout .
Definition at line 281 of file basic_ios.h. |
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Clearing format flags.
Definition at line 608 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 |
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Changing flags.
Definition at line 650 of file ios_base.h. |
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Flags access.
Definition at line 642 of file ios_base.h. Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::num_put< CharT, OutIter >::do_put(), std::money_put< CharT, OutIter >::M_insert(), std::num_put< CharT, OutIter >::M_insert_float(), std::num_put< CharT, OutIter >::M_insert_int(), and std::operator>>(). |
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Character string insertion.
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Access to unique indices.
The implementation maintains a static variable that is incremented and returned on each invocation. xalloc is guaranteed to return an index that is safe to use in the iword and pword arrays. |
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A mask of left|right|internal. Useful for the 2-arg form of
Definition at line 308 of file ios_base.h. Referenced by std::internal(), std::left(), std::money_put< CharT, OutIter >::M_insert(), std::right(), and std::__pad< CharT, Traits >::S_pad(). |
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Seek to end before each write.
Definition at line 362 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 365 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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A mask of dec|oct|hex. Useful for the 2-arg form of
Definition at line 311 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::oct(), std::basic_ostream< CharT, Traits >::operator<<(), and std::basic_ostream< char >::operator<<(). |
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Request a seek relative to the beginning of the stream.
Definition at line 395 of file ios_base.h. Referenced by std::strstreambuf::seekoff(), __gnu_cxx::stdio_sync_filebuf< CharT, Traits >::seekoff(), std::strstreambuf::seekpos(), __gnu_cxx::stdio_sync_filebuf< CharT, Traits >::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 371 of file ios_base.h. |
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Insert/extract
Definition at line 256 of file ios_base.h. Referenced by std::boolalpha(), std::num_get< CharT, InIter >::do_get(), std::num_put< CharT, OutIter >::do_put(), and std::noboolalpha(). |
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Request a seek relative to the current position within the sequence.
Definition at line 398 of file ios_base.h. Referenced by std::basic_filebuf< CharT, Traits >::imbue(), std::basic_filebuf< CharT, Traits >::pbackfail(), std::strstreambuf::seekoff(), __gnu_cxx::stdio_sync_filebuf< CharT, Traits >::seekoff(), std::basic_stringbuf< CharT, Traits, Alloc >::seekoff(), std::basic_filebuf< CharT, Traits >::seekoff(), std::basic_istream< CharT, Traits >::tellg(), and std::basic_ostream< CharT, Traits >::tellp(). |
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Converts integer input or generates integer output in decimal base.
Definition at line 259 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 401 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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Generate floating-point output in fixed-point notation.
Definition at line 262 of file ios_base.h. Referenced by std::fixed(), std::num_put< CharT, OutIter >::M_insert_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 314 of file ios_base.h. Referenced by std::fixed(), std::num_base::S_format_float(), and std::scientific(). |
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Converts integer input or generates integer output in hexadecimal base.
Definition at line 265 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::basic_ostream< CharT, Traits >::operator<<(), and std::basic_ostream< char >::operator<<(). |
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designated.
Definition at line 270 of file ios_base.h. Referenced by std::num_put< CharT, OutIter >::do_put(), std::internal(), std::money_put< CharT, OutIter >::M_insert(), 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 274 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 277 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::oct(), std::basic_ostream< CharT, Traits >::operator<<(), and std::basic_ostream< char >::operator<<(). |
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generated output. (I.e., the thing you print is flush right.)
Definition at line 281 of file ios_base.h. Referenced by std::right(). |
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Generates floating-point output in scientific notation.
Definition at line 284 of file ios_base.h. Referenced by std::num_base::S_format_float(), and std::scientific(). |
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output.
Definition at line 288 of file ios_base.h. Referenced by std::num_put< CharT, OutIter >::do_put(), std::int_to_char(), std::money_get< CharT, InIter >::M_extract(), std::num_put< CharT, OutIter >::M_group_int(), std::money_put< CharT, OutIter >::M_insert(), std::noshowbase(), and std::showbase(). |
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floating-point output.
Definition at line 292 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 295 of file ios_base.h. Referenced by std::int_to_char(), std::noshowpos(), std::num_base::S_format_float(), and std::showpos(). |
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Skips leading white space before certain input operations.
Definition at line 298 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 380 of file ios_base.h. |
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Flushes output after each output operation.
Definition at line 301 of file ios_base.h. Referenced by std::ios_base::Init::Init(), std::nounitbuf(), std::unitbuf(), and std::basic_ostream< CharT, Traits >::sentry::~sentry(). |
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in generated output.
Definition at line 305 of file ios_base.h. Referenced by std::num_put< CharT, OutIter >::do_put(), std::int_to_char(), std::nouppercase(), std::num_base::S_format_float(), and std::uppercase(). |