std::istrstream
From cppreference.com
| Defined in header <strstream>
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| class istrstream : public std::istream |
(deprecated) | |
The class istrstream implements input operations on array-backed streams. It essentially wraps a raw array I/O device implementation (std::strstreambuf) into the higher-level interface of std::basic_istream.
The typical implementation of istrstream holds only one non-derived data member: an object of type std::strstreambuf.
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[edit] Notes
istrstream has been deprecated since C++98, std::istringstream and boost::iostreams::array_source are the recommended replacements.
[edit] Member functions
| constructs an strstream, optionally allocating the buffer (public member function) | |
| [virtual] |
destructs a strstream, optionally deallocating the buffer (virtual public member function) |
| obtains a pointer to the associated strstreambuf (public member function) | |
| accesses the output buffer (public member function) |
Inherited from std::basic_istream
Member functions
Formatted input | |
| extracts formatted data (public member function of std::basic_istream)
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Unformatted input | |
| extracts characters (public member function of std::basic_istream)
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| reads the next character without extracting it (public member function of std::basic_istream)
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| unextracts a character (public member function of std::basic_istream)
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| puts character into input stream (public member function of std::basic_istream)
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| extracts characters until the given character is found (public member function of std::basic_istream)
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| extracts and discards characters until the given character is found (public member function of std::basic_istream)
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| extracts blocks of characters (public member function of std::basic_istream)
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| extracts already available blocks of characters (public member function of std::basic_istream)
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| returns number of characters extracted by last unformatted input operation (public member function of std::basic_istream)
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Positioning | |
| returns the input position indicator (public member function of std::basic_istream)
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| sets the input position indicator (public member function of std::basic_istream)
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Miscellaneous | |
| synchronizes with the underlying storage device (public member function of std::basic_istream)
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Member classes
| implements basic logic for preparation of the stream for input operations (public member class of std::basic_istream)
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Inherited from std::basic_ios
Member types
| Member type | Definition |
char_type
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CharT |
traits_type
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Traits |
int_type
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Traits::int_type |
pos_type
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Traits::pos_type |
off_type
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Traits::off_type |
State functions | |
| checks if no error has occurred i.e. I/O operations are available (public member function of std::basic_ios)
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| checks if end-of-file has been reached (public member function of std::basic_ios)
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| checks if a recoverable error has occurred (public member function of std::basic_ios)
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| checks if a non-recoverable error has occurred (public member function of std::basic_ios)
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| checks if an error has occurred (synonym of fail()) (public member function of std::basic_ios)
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checks if no error has occurred (synonym of !fail()) (public member function of std::basic_ios)
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| returns state flags (public member function of std::basic_ios)
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| sets state flags (public member function of std::basic_ios)
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| clears error and eof flags (public member function of std::basic_ios)
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Formatting | |
| copies formatting information (public member function of std::basic_ios)
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| manages the fill character (public member function of std::basic_ios)
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Miscellaneous | |
| manages exception mask (public member function of std::basic_ios)
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| sets the locale (public member function of std::basic_ios)
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| manages associated stream buffer (public member function of std::basic_ios)
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| manages tied stream (public member function of std::basic_ios)
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| narrows characters (public member function of std::basic_ios)
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| widens characters (public member function of std::basic_ios)
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Inherited from std::ios_base
Member functions
Formatting | |
| manages format flags (public member function of std::ios_base)
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| sets specific format flag (public member function of std::ios_base)
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| clears specific format flag (public member function of std::ios_base)
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| manages decimal precision of floating point operations (public member function of std::ios_base)
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| manages field width (public member function of std::ios_base)
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Locales | |
| sets locale (public member function of std::ios_base)
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| returns current locale (public member function of std::ios_base)
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Internal extensible array | |
| [static] |
returns a program-wide unique integer that is safe to use as index to pword() and iword() (public static member function of std::ios_base)
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| resizes the private storage if necessary and access to the long element at the given index (public member function of std::ios_base)
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| resizes the private storage if necessary and access to the void* element at the given index (public member function of std::ios_base)
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Miscellaneous | |
| registers event callback function (public member function of std::ios_base)
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| [static] |
sets whether C++ and C IO libraries are interoperable (public static member function of std::ios_base)
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Member classes | |
| stream exception (public member class of std::ios_base)
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| initializes standard stream objects (public member class of std::ios_base)
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Member types and constants | |||||||||||||||||||||||||||||||||||||||
| Type | Explanation | ||||||||||||||||||||||||||||||||||||||
| stream open mode type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||
| formatting flags type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||
| state of the stream type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||
| seeking direction type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||
| specifies event type (enum) | |||||||||||||||||||||||||||||||||||||||
| callback function type (typedef) | |||||||||||||||||||||||||||||||||||||||