The class strstream
implements input and 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_iostream.
The typical implementation of strstream
holds only one non-derived data member: an object of type std::strstreambuf.
After any call to str(), a call to freeze(false) is required to allow the destructor to deallocate the buffer as necessary.
Before any call to str() that uses the result as a C-string, the buffer must be null-terminated, typically with std::ends.
strstream
has been deprecated since C++98 and removed since C++26. std::stringstream, std::spanstream(since C++23), and boost::iostreams::array
are the recommended replacements.
strstream
object, optionally allocating the buffer
strstream
object, optionally deallocating the buffer
strstreambuf
std::basic_istream<CharT,Traits>
) [edit] Unformatted input extracts characters
std::basic_istream<CharT,Traits>
) [edit] reads the next character without extracting it
std::basic_istream<CharT,Traits>
) [edit] unextracts a character
std::basic_istream<CharT,Traits>
) [edit] puts a character into input stream
std::basic_istream<CharT,Traits>
) [edit] extracts characters until the given character is found
std::basic_istream<CharT,Traits>
) [edit] extracts and discards characters until the given character is found
std::basic_istream<CharT,Traits>
) [edit] extracts blocks of characters
std::basic_istream<CharT,Traits>
) [edit] extracts already available blocks of characters
std::basic_istream<CharT,Traits>
) [edit] returns number of characters extracted by last unformatted input operation
std::basic_istream<CharT,Traits>
) [edit] Positioning returns the input position indicator
std::basic_istream<CharT,Traits>
) [edit] sets the input position indicator
std::basic_istream<CharT,Traits>
) [edit] Miscellaneous synchronizes with the underlying storage device
std::basic_istream<CharT,Traits>
) [edit] Member classes implements basic logic for preparation of the stream for input operations
std::basic_istream<CharT,Traits>
) [edit] Inherited from std::basic_ostream Member functions Formatted output inserts formatted data
std::basic_ostream<CharT,Traits>
) [edit] Unformatted output inserts a character
std::basic_ostream<CharT,Traits>
) [edit] inserts blocks of characters
std::basic_ostream<CharT,Traits>
) [edit] Positioning returns the output position indicator
std::basic_ostream<CharT,Traits>
) [edit] sets the output position indicator
std::basic_ostream<CharT,Traits>
) [edit] Miscellaneous synchronizes with the underlying storage device
std::basic_ostream<CharT,Traits>
) [edit] Member classes implements basic logic for preparation of the stream for output operations
std::basic_ostream<CharT,Traits>
) [edit] Inherited from std::basic_ios Member types Member type Definition char_type
CharT
traits_type
Traits
int_type
Traits::int_type
pos_type
Traits::pos_type
off_type
Traits::off_type
Member functions State functions checks if no error has occurred i.e. I/O operations are available
std::basic_ios<CharT,Traits>
) [edit] checks if end-of-file has been reached
std::basic_ios<CharT,Traits>
) [edit] checks if an error has occurred
std::basic_ios<CharT,Traits>
) [edit] checks if a non-recoverable error has occurred
std::basic_ios<CharT,Traits>
) [edit] checks if an error has occurred (synonym of fail())
std::basic_ios<CharT,Traits>
) [edit] checks if no error has occurred (synonym of !
fail())
std::basic_ios<CharT,Traits>
) [edit] returns state flags
std::basic_ios<CharT,Traits>
) [edit] sets state flags
std::basic_ios<CharT,Traits>
) [edit] modifies state flags
std::basic_ios<CharT,Traits>
) [edit] Formatting copies formatting information
std::basic_ios<CharT,Traits>
) [edit] manages the fill character
std::basic_ios<CharT,Traits>
) [edit] Miscellaneous manages exception mask
std::basic_ios<CharT,Traits>
) [edit] sets the locale
std::basic_ios<CharT,Traits>
) [edit] manages associated stream buffer
std::basic_ios<CharT,Traits>
) [edit] manages tied stream
std::basic_ios<CharT,Traits>
) [edit] narrows characters
std::basic_ios<CharT,Traits>
) [edit] widens characters
std::basic_ios<CharT,Traits>
) [edit] Inherited from std::ios_base Member functions Formatting manages format flags
std::ios_base
) [edit] sets specific format flag
std::ios_base
) [edit] clears specific format flag
std::ios_base
) [edit] manages decimal precision of floating point operations
std::ios_base
) [edit] manages field width
std::ios_base
) [edit] Locales sets locale
std::ios_base
) [edit] returns current locale
std::ios_base
) [edit] Internal extensible array returns a program-wide unique integer that is safe to use as index to pword() and iword()
std::ios_base
) [edit] resizes the private storage if necessary and access to the long element at the given index
std::ios_base
) [edit] resizes the private storage if necessary and access to the void* element at the given index
std::ios_base
) [edit] Miscellaneous registers event callback function
std::ios_base
) [edit] sets whether C++ and C I/O libraries are interoperable
std::ios_base
) [edit] Member classes stream exception
std::ios_base
) [edit] initializes standard stream objects
std::ios_base
) [edit] Member types and constants Type Explanation stream open mode type
The following constants are also defined:
The following constants are also defined:
The following constants are also defined:
The following constants are also defined:
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