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#include <bdlbb_blobstreambuf.h>
Public Member Functions | |
| OutBlobStreamBuf (bdlbb::Blob *blob) | |
| ~OutBlobStreamBuf () | |
| bdlbb::Blob * | data () |
| void | reset (bdlbb::Blob *blob=0) |
| int | currentBufferIndex () const |
| const bdlbb::Blob * | data () const |
| int | previousBuffersLength () const |
Protected Member Functions | |
| virtual int_type | overflow (int_type c=bsl::streambuf::traits_type::eof()) |
| virtual int_type | pbackfail (int_type c=bsl::streambuf::traits_type::eof()) |
| virtual pos_type | seekoff (off_type offset, bsl::ios_base::seekdir fixedPosition, bsl::ios_base::openmode which=bsl::ios_base::in|bsl::ios_base::out) |
| virtual pos_type | seekpos (pos_type position, bsl::ios_base::openmode which=bsl::ios_base::in|bsl::ios_base::out) |
| virtual bsl::streamsize | showmanyc () |
| virtual int | sync () |
| virtual int_type | underflow () |
| virtual bsl::streamsize | xsgetn (char_type *destination, bsl::streamsize numChars) |
| virtual bsl::streamsize | xsputn (const char_type *source, bsl::streamsize numChars) |
This class implements the output functionality of the basic_streambuf protocol, using a client-supplied bdlbb::Blob.
See Component bdlbb_blobstreambuf
| bdlbb::OutBlobStreamBuf::OutBlobStreamBuf | ( | bdlbb::Blob * | blob | ) | [explicit] |
Create a OutBlobStreamBuf using the specified blob, and set the location at which the next write operation will occur to blob->length(). The behavior is undefined unless blob remains valid and externally unmodified for the lifetime of this streambuf.
| bdlbb::OutBlobStreamBuf::~OutBlobStreamBuf | ( | ) |
Destroy this stream buffer.
| virtual int_type bdlbb::OutBlobStreamBuf::overflow | ( | int_type | c = bsl::streambuf::traits_type::eof() |
) | [protected, virtual] |
Append the optionally specified character c to this streambuf, and return c. By default, traits_type::eof() is appended.
| virtual int_type bdlbb::OutBlobStreamBuf::pbackfail | ( | int_type | c = bsl::streambuf::traits_type::eof() |
) | [protected, virtual] |
Return traits_type::eof() unconditionally.
| virtual pos_type bdlbb::OutBlobStreamBuf::seekoff | ( | off_type | offset, | |
| bsl::ios_base::seekdir | fixedPosition, | |||
| bsl::ios_base::openmode | which = bsl::ios_base::in|bsl::ios_base::out | |||
| ) | [protected, virtual] |
Set the location from which the next I/O operation indicated by the optionally specified which mode will occur to the specified offset position from the location indicated by the specified fixedPosition. Return the new offset on success, and off_type(-1) otherwise. offset may be negative. Note that this method will fail if bsl::ios_base::in is set.
| virtual pos_type bdlbb::OutBlobStreamBuf::seekpos | ( | pos_type | position, | |
| bsl::ios_base::openmode | which = bsl::ios_base::in|bsl::ios_base::out | |||
| ) | [protected, virtual] |
Set the location from which the next I/O operation indicated by the optionally specified which mode will occur to the specified position. Return position on success, and off_type(-1) otherwise. Note that this method will fail if bsl::ios_base::in is set.
| virtual bsl::streamsize bdlbb::OutBlobStreamBuf::showmanyc | ( | ) | [protected, virtual] |
Return 0 unconditionally.
| virtual int bdlbb::OutBlobStreamBuf::sync | ( | ) | [protected, virtual] |
Synchronize the put position in the blob of this stream buffer. Return 0 unconditionally.
| virtual int_type bdlbb::OutBlobStreamBuf::underflow | ( | ) | [protected, virtual] |
Return traits_type::eof() unconditionally.
| virtual bsl::streamsize bdlbb::OutBlobStreamBuf::xsgetn | ( | char_type * | destination, | |
| bsl::streamsize | numChars | |||
| ) | [protected, virtual] |
Return 0 unconditionally.
| virtual bsl::streamsize bdlbb::OutBlobStreamBuf::xsputn | ( | const char_type * | source, | |
| bsl::streamsize | numChars | |||
| ) | [protected, virtual] |
Copy the specified numChars from the specified source to the blob held by this streambuf, starting at the current put area location. The behavior is undefined unless 0 <= numChars.
| bdlbb::Blob* bdlbb::OutBlobStreamBuf::data | ( | ) |
Return the address of the blob held by this stream buffer.
| void bdlbb::OutBlobStreamBuf::reset | ( | bdlbb::Blob * | blob = 0 |
) |
Reset the put position of this buffer to the first location, available for writing in the underlying bdlbb::Blob. Optionally specify a blob used to change current underlying bdlbb::Blob value for. The behavior is undefined unless blob remains valid and externally unmodified for the lifetime of this streambuf.
| int bdlbb::OutBlobStreamBuf::currentBufferIndex | ( | ) | const |
Return the index of the current buffer. The behavior is undefined unless the "streamed" blob has at least one buffer.
| const bdlbb::Blob* bdlbb::OutBlobStreamBuf::data | ( | ) | const |
Return the address of the blob held by this stream buffer.
| int bdlbb::OutBlobStreamBuf::previousBuffersLength | ( | ) | const |
Return the number of bytes contained in the buffers located before the current one. The behavior is undefined unless the "streamed" blob has at least one buffer.
1.7.1