BloombergLP::bdlsb::MemOutStreamBuf

Synopsis

Declared in <bdlsb_memoutstreambuf.h>

class MemOutStreamBuf
    : public std::streambuf

Base Classes

Name	Description
`std::streambuf`

Member Functions

Name	Description
`MemOutStreamBuf` [constructor]	Create an empty stream buffer. Optionally specify a `basicAllocator` used to supply memory. If `basicAllocator` is 0, the currently installed default allocator is used.
`MemOutStreamBuf` [constructor]	Create an empty stream buffer with sufficient initial capacity to accommodate up to the specified `numElements` characters without subsequent reallocation. If `numElements == 0`, an implementation-defined initial capacity is used. Optionally specify a `basicAllocator` used to supply memory. If `basicAllocator` is 0, the currently installed default allocator is used.
`~MemOutStreamBuf` [destructor] [virtual]	Destroy this stream buffer.
`capacity`	Return the current capacity of the buffer managed by this stream buffer.
`data`	Return the address of the non-modifiable character buffer managed by this stream buffer.
`length`	Return the number of valid characters in this stream buffer.
`reserveCapacity`	Reserve sufficient internal capacity to store at least the specified `numCharacters` characters without reallocation. Note that if the storage size specified is less than the number of characters already in the buffer, this method has no effect.
`reset`	Destroy the contents of this stream buffer, return all allocated memory to the allocator, and reset the buffer to the default constructed state. Note that `length() == 0` holds following a call to this method.
`operator BloombergLP::bslmf::NestedTraitDeclaration<MemOutStreamBuf, UsesBslmaAllocator>`	Declare `MemOutStreamBuf` as using a `bslma` allocator.

Protected Member Functions

Name	Description
`overflow` [virtual]	Append the optionally specified `insertionChar` to this stream buffer's character buffer and return `insertionChar`. If `insertionChar` is not specified, `traits_type::eof()` is appended instead.
`seekoff` [virtual]	Set the position indicator to the relative specified `offset` from the base position indicated by the specified `way` and return the resulting absolute position on success or pos_type(-1) on failure. Optionally specify `which` area of the stream buffer. The seek operation will fail if `which` does not include the flag `bsl::ios_base::out` or if the resulting absolute position is less than zero or greater then `length()`.
`seekpos` [virtual]	Set the position indicator to the specified `position` and return the resulting absolute position on success or pos_type(-1) on failure. Optionally specify `which` area of the stream buffer. The `seekpos` operation will fail if `which` does not include the flag `bsl::ios_base::out` or if `position` is less then zero or greater than `length()`.
`xsputn` [virtual]	Write the specified `numChars` characters from the specified `source` to the stream buffer. Return the number of characters successfully written. The behavior is undefined unless '(source && 0 < numChars) \|\| 0 == numChars'.