FileStream.h

/*
  FileStream.h 
  Copyright (c) 2025 Phil Schatzmann. 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
*/
#pragma once
#include <fstream>
#include <iostream>
#include "Platform.h"
#include "api/Stream.h"
 
namespace arduino {
 
class FileStream : public Stream {
 public:
  FileStream(const char* outDevice = "/dev/stdout",
             const char* inDevice = "/dev/stdin") {
    open(outDevice, inDevice);
  }
 
  ~FileStream() {
    in.close();
    out.close();
  }
 
  void open(const char* outDevice, const char* inDevice) {
    if (outDevice != nullptr) out.open(outDevice, std::ios::out);
    if (inDevice != nullptr) in.open(inDevice, std::ios::in);
  }
 
  virtual void begin(int speed) {
    // nothing to be done
  }
 
  virtual void end() {
    // nothing to be done
  }
 
  virtual void print(const char* str) {
    out << str;
    out.flush();
  }
 
  virtual void println(const char* str = "") {
    out << str << "\n";
    out.flush();
  }
 
  virtual void print(int str) {
    out << str;
    out.flush();
  }
 
  virtual void println(int str) {
    out << str << "\n";
    out.flush();
  }
 
  virtual void flush() { out.flush(); }
 
  virtual void write(const char* str, int len) { out.write(str, len); }
 
  virtual void write(uint8_t* str, int len) {
    out.write((const char*)str, len);
  }
 
  virtual size_t write(int32_t value) {
    out.put(value);
    return 1;
  }
 
  virtual size_t write(uint8_t value) {
    out.put(value);
    return 1;
  }
 
  virtual int available() { return in.rdbuf()->in_avail(); };
 
  virtual int read() { return in.get(); }
 
  virtual int peek() { return in.peek(); }
 
 protected:
  std::fstream out;
  std::fstream in;
};
 
#if ARDUINO_EMULATOR_WINDOWS
// No physical COM port is assumed on Windows. Use SerialImpl and pass the
// selected device explicitly when hardware serial is required.
static FileStream Serial1(nullptr, nullptr);
#else
static FileStream Serial1("/dev/ttyACM0");
#endif
 
}  // namespace arduino