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An implementation of a Stream that reads and writes data in a DataBlock
inline MemoryStream ()
| MemoryStream |
Constructor of an empty stream
inline MemoryStream (const DataBlock& data)
| MemoryStream |
Constructor of aan initialized stream
Parameters:
data | Initial data to be copied in the memory stream |
inline const DataBlock& data ()
| data |
[const]
Get read-only access to the DataBlock held
Returns: Const reference to the DataBlock
bool terminate ()
| terminate |
[virtual]
Do-nothing termination handler
Returns: True to signal the stream was closed
Reimplemented from Stream.
bool valid ()
| valid |
[const virtual]
Do-nothing validity check
Returns: True to indicate the stream is valid
Reimplemented from Stream.
int writeData (const void* buffer, int len)
| writeData |
[virtual]
Write new data to the DataBlock at current position, advance pointer
Parameters:
buffer | Buffer of source data |
len | Length of data to be written |
Returns: Number of bytes written, negative on error
Reimplemented from Stream.
int readData (void* buffer, int len)
| readData |
[virtual]
Get data from internal DataBlock, advance pointer
Parameters:
buffer | Buffer for getting the data |
len | Length of the buffer |
Returns: Number of bytes read, negative on error, zero on end of data
Reimplemented from Stream.
int64_t length ()
| length |
[virtual]
Get the length of the stream
Returns: Length of the DataBlock in memory
Reimplemented from Stream.
int64_t seek (SeekPos pos, int64_t offset = 0)
| seek |
[virtual]
Set the read/write pointer
Parameters:
pos | The seek start as enumeration |
offset | The number of bytes to move the pointer from starting position |
Returns: The new position of the stream read/write pointer. Negative on failure
Reimplemented from Stream.
DataBlock m_data | m_data |
[protected]
int64_t m_offset | m_offset |
[protected]
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