ReadWriteStream

class ReadWriteStream : public IDataSourceStream

Base class for read/write stream.

Subclassed by CircularBuffer, EndlessMemoryStream, FileStream, GdbFileStream, HardwareSerial, HostFileStream, LimitedMemoryStream, MemoryDataStream, OtaUpgrade::BasicStream

Public Functions

size_t write(uint8_t charToWrite)

From Stream class: We don’t write using this stream.

Parameters

• charToWrite:

virtual size_t write(const uint8_t *buffer, size_t size) = 0

Write chars to stream.

Note

Although this is defined in the Print class, ReadWriteStream uses this as the core output method so descendants are required to implement it

Parameters

• buffer: Pointer to buffer to write to the stream

• size: Quantity of chars to write

Return Value

• size_t: Quantity of chars written to stream

virtual size_t copyFrom(IDataSourceStream *source, size_t size = SIZE_MAX)

Copy data from a source stream.

Parameters

• source: Stream to read data from

• size: Quantity of chars to write, determines size of intermediate buffer to use

Return Value

• size_t: Quantity of chars actually written, may be less than requested