Inheritance diagram for std::basic_istringstream< CharT, Traits, Alloc >:
Public Types | |
typedef CharT | char_type |
typedef Traits | traits_type |
typedef traits_type::int_type | int_type |
typedef traits_type::pos_type | pos_type |
typedef traits_type::off_type | off_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 | |
basic_istringstream (ios_base::openmode __mode=ios_base::in) | |
Default constructor starts with an empty string buffer. | |
basic_istringstream (const string_type &str, ios_base::openmode __mode=ios_base::in) | |
Starts with an existing string buffer. | |
~basic_istringstream () | |
The destructor does nothing. | |
stringbuf_type * | rdbuf () const |
Accessing the underlying buffer. | |
string_type | str () const |
Copying out the string buffer. | |
void | str (const string_type &s) |
Setting a new buffer. | |
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. | |
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 (basic_streambuf< CharT, 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. | |
__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. | |
operator void * () const | |
The quick-and-easy status check. | |
bool | operator! () const |
The quick-and-easy status check. | |
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 |
Adds fill characters at a designated internal point in certain generated output, or identical to right if no such point is designated. | |
static const fmtflags | left |
Adds fill characters on the right (final positions) of certain 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 |
Adds fill characters on the left (initial positions) of certain 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 |
Generates a prefix indicating the numeric base of generated integer output. | |
static const fmtflags | showpoint |
Generates a decimal-point character unconditionally in generated 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 |
Replaces certain lowercase letters with their uppercase equivalents 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 |
Indicates a loss of integrity in an input or output sequence (such 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 |
Indicates that an input operation failed to read the expected characters, or that an output operation failed to generate the 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 |
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. | |
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. |
This class supports reading from objects of type std::basic_string, using the inherited functions from std::basic_istream. To control the associated sequence, an instance of std::basic_stringbuf is used, which this page refers to as sb
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Definition at line 299 of file sstream.
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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_istream< CharT, 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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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_istream< CharT, Traits >. |
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This is a bitmask type.
Definition at line 328 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_istream< CharT, Traits >. |
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This is a bitmask type.
Definition at line 359 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_istream< CharT, Traits >. |
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This is an enumerated type.
Definition at line 392 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_istream< 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 420 of file ios_base.h. |
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Default constructor starts with an empty string buffer.
ios_base::in is automatically included in mode.
Initializes |
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Starts with an existing string buffer.
ios_base::in is automatically included in mode.
Initializes |
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The destructor does nothing. The buffer is deallocated by the stringbuf object, not the formatting stream. |
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Fast error checking.
Definition at line 197 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::basic_ios< CharT, Traits >::rdstate(). 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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Copies fields of __rhs into this.
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::basic_streambuf< CharT, Traits >::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 176 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 243 of file basic_ios.h. |
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Throwing exceptions on errors.
Definition at line 208 of file basic_ios.h. Referenced by std::basic_ios< CharT, Traits >::copyfmt(). |
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Fast error checking.
Definition at line 187 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 376 of file basic_ios.h. |
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Retreives the "empty" character.
Definition at line 356 of file basic_ios.h. Referenced by std::basic_ios< CharT, Traits >::copyfmt(), std::basic_ios< char, Traits >::fill(), std::operator<<(), and std::basic_ostream< CharT, Traits >::operator<<(). |
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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::basic_ostream< CharT, Traits >::operator<<(), std::basic_ostream< char >::operator<<(), and std::operator<<(). |
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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 542 of file istream.tcc. References 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 503 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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Simple extraction.
Definition at line 471 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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Simple extraction.
Definition at line 440 of file istream.tcc. References 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 581 of file istream.tcc. References std::copy(), std::find(), 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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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. |
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Fast error checking.
Definition at line 166 of file basic_ios.h. |
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Discarding characters.
Definition at line 647 of file istream.tcc. References std::max(), std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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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 127 of file basic_ios.tcc. References std::basic_ios< CharT, Traits >::rdbuf(). 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 139 of file basic_ios.tcc. Referenced by std::basic_ios< char, Traits >::basic_ios(), std::basic_iostream< char >::basic_iostream(), std::basic_istream< char >::basic_istream(), and std::basic_ostream< char >::basic_ostream(). |
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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 std::use_facet<ctype<char_type> >(getloc()).narrow(c,dfault) Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/22_locale/howto.html Definition at line 116 of file basic_ios.tcc. |
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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. |
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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 111 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 416 of file istream.tcc. References std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 394 of file istream.tcc. References std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 372 of file istream.tcc. References std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 350 of file istream.tcc. References std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 328 of file istream.tcc. References std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 260 of file istream.tcc. References std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 238 of file istream.tcc. References std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 216 of file istream.tcc. References std::basic_ios< CharT, Traits >::setstate(). |
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Basic arithmetic extractors.
num_get facet) to parse the input data.
Definition at line 185 of file istream.tcc. References 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 163 of file istream.tcc. References 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::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 110 of file istream.tcc. References std::basic_ios< CharT, Traits >::setstate(). |
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Interface for manipulators.
Manuipulators such as Definition at line 101 of file istream.tcc. |
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Interface for manipulators.
Manuipulators such as Definition at line 92 of file istream.tcc. |
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Interface for manipulators.
Manuipulators such as Definition at line 86 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 683 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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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(), and std::operator<<(). |
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Unextracting a single character.
rdbuf() is not null, calls rdbuf()->sputbackc(c) .
If
Definition at line 759 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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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> Definition at line 51 of file basic_ios.tcc. References std::basic_ios< CharT, Traits >::clear(). |
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Accessing the underlying buffer.
Reimplemented from std::basic_ios< CharT, Traits >. |
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Returns the error state of the stream buffer.
Definition at line 123 of file basic_ios.h. Referenced by std::basic_ios< CharT, Traits >::clear(), and 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 708 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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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 732 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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Add the callback __fn with parameter index.
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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 892 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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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 864 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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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::right(), std::scientific(), std::showbase(), std::showpoint(), std::showpos(), std::skipws(), std::unitbuf(), and std::uppercase(). |
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Setting a new buffer.
rdbuf()->str(s) .
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Copying out the string buffer.
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Synchronizing the stream buffer.
rdbuf() is a null pointer, returns -1.
Otherwise, calls Otherwise, returns 0.
Definition at line 815 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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Interaction with the standard C I/O objects.
Definition at line 148 of file ios_init.cc. References std::cerr, std::cin, std::clog, std::cout, and std::basic_ios< CharT, Traits >::rdbuf(). |
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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 846 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(). |
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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. Referenced by std::basic_ios< CharT, Traits >::copyfmt(). |
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Unextracting the previous character.
rdbuf() is not null, calls rdbuf()->sungetc(c) .
If
Definition at line 787 of file istream.tcc. References std::basic_ios< CharT, Traits >::rdbuf(), and std::basic_ios< CharT, Traits >::setstate(). |
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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 std::use_facet<ctype<char_type> >(getloc()).widen(c) Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/22_locale/howto.html Definition at line 121 of file basic_ios.tcc. Referenced by std::basic_ios< char, Traits >::fill(), and std::operator<<(). |
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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(), and std::operator<<(). |
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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
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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).
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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.
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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.
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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.
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Converts integer input or generates integer output in hexadecimal base.
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Open for input. Default for
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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
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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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