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/*
Copyright (c) 2013 Arduino LLC. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef PROCESS_H_
#define PROCESS_H_
#include <Bridge.h>
class Process : public Stream {
public:
// Constructor with a user provided BridgeClass instance
Process(BridgeClass &_b = Bridge) :
bridge(_b), started(false), buffered(0), readPos(0) { }
~Process();
void begin(const String &command);
void addParameter(const String ¶m);
unsigned int run();
void runAsynchronously();
boolean running();
unsigned int exitValue();
void close();
operator bool () { return started; }
// Stream methods
// (read from process stdout)
int available();
int read();
int peek();
// (write to process stdin)
size_t write(uint8_t);
void flush();
// TODO: add optimized function for block write
private:
BridgeClass &bridge;
unsigned int handle;
String *cmdline;
boolean started;
private:
void doBuffer();
uint8_t buffered;
uint8_t readPos;
static const int BUFFER_SIZE = 64;
uint8_t buffer[BUFFER_SIZE];
};
#endif
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