mbed.org implementation of the abstract SmartREST library for the Cumulocity Platform SmartREST protocol.
Dependents: MbedSmartRestMain MbedSmartRestMain
Diff: MbedDataSource.cpp
- Revision:
- 0:099f76422485
- Child:
- 11:e1bee9a77652
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MbedDataSource.cpp Thu Jul 03 20:38:04 2014 +0200 @@ -0,0 +1,88 @@ +/* + * MbedDataSource.cpp + * + * Created on: Feb 1, 2013 + * * Authors: Vincent Wochnik <v.wochnik@gmail.com> + * + * Copyright (c) 2013 Cumulocity GmbH + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "MbedDataSource.h" +#include "stdio.h" + +MbedDataSource::MbedDataSource(TCPSocketConnection& sock) : _sock(sock) +{ + _offset = _len = 0; + _timeout = false; +} + +MbedDataSource::~MbedDataSource() +{ +} + +char MbedDataSource::read() +{ + while (_offset == _len) { + if (!receive()) + return 0; + } + + return _buf[_offset++]; +} + +uint8_t MbedDataSource::status() +{ + if (!_sock.is_connected()) + return DS_STATUS_CLOSED; + + if (_timeout) + return DS_STATUS_TIMEOUT; + + return DS_STATUS_OK; +} + +bool MbedDataSource::receive() +{ + int ret; + + if (status() != DS_STATUS_OK) + return false; + + _sock.set_blocking(true, 60000); + ret = _sock.receive(_buf, MBED_SOURCE_BUFFER_SIZE); + + if (ret < 0) { + _timeout = true; + return false; + } + + _len = (size_t)ret; + _offset = 0; + + return true; +} + +void MbedDataSource::reset() +{ + _len = _offset = 0; + _timeout = false; +}