std::ostrstream
Defined in header
<strstream>
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class ostrstream : public std::ostream
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(deprecated) | |
The class ostrstream
implements output 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_ostream.
The typical implementation of ostrstream
holds only one non-derived data member: an object of type std::strstreambuf.
Contents |
[edit] Notes
After any call to str()
, a call to freeze(false)
is required to allow the destructor to deallocate the buffer as necessary.
ostrstream
has been deprecated since C++98, std::ostringstream and boost::iostreams::array_sink are the recommended replacements.
[edit] Member functions
constructs an strstream, optionally allocating the buffer (public member function) |
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[virtual]
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destructs a strstream, optionally deallocating the buffer (virtual public member function) |
obtains a pointer to the associated strstreambuf (public member function) |
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accesses the output buffer (public member function) |
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disables/enables automatic reallocation (public member function) |
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obtains the number of characters written (public member function) |
Inherited from std::basic_ostream
Member functions
Formatted input |
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inserts formatted data (public member function of std::basic_ostream )
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Unformatted input |
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inserts a character (public member function of std::basic_ostream )
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inserts blocks of characters (public member function of std::basic_ostream )
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Positioning |
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returns the output position indicator (public member function of std::basic_ostream )
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sets the output position indicator (public member function of std::basic_ostream )
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Miscellaneous |
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synchronizes with the underlying storage device (public member function of std::basic_ostream )
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Member classes
implements basic logic for preparation of the stream for output operations (public member class of std::basic_ostream )
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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 |
Member functions
State functions |
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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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(until C++11)(since C++11)
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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 |
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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 |
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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 |
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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 |
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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 |
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[static]
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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 |
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registers event callback function (public member function of std::ios_base )
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[static]
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sets whether C++ and C IO libraries are interoperable (public static member function of std::ios_base )
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Member classes |
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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 |
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Type | Explanation | ||||||||||||||||||||||||||||||||||||||
stream open mode type
The following constants are also defined:
(typedef) |
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formatting flags type
The following constants are also defined:
(typedef) |
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state of the stream type
The following constants are also defined:
(typedef) |
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seeking direction type
The following constants are also defined:
(typedef) |
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specifies event type (enum) |
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callback function type (typedef) |