filestream.h

/*
  This file is part of the Fairytale project

  Copyright (C) 2018 Márcio Pais

  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 3 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 program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef FILESTREAM_H
#define FILESTREAM_H

#include "stream.h"

class FileStream : public Stream {
protected:
  FILE *file;
  char *name;

public:
  FileStream();
  ~FileStream();
  bool open(const char *filename);
  bool create(const char *filename);
  bool getTempFile();
  void close();
  inline int getChar() {
    assert(file != nullptr);
    return fgetc(file);
  }
  inline void putChar(const uint8_t c) {
    assert(file != nullptr);
    if (fputc(c, file) == EOF)
      throw ExhaustedStorageException();
  }
  size_t blockRead(void *ptr, const size_t count);
  void blockWrite(void *ptr, const size_t count);
  void setPos(const off_t newpos);
  void setEnd();
  off_t curPos();
  inline bool eof() {
    assert(file != nullptr);
    return feof(file) != 0;
  }
  inline bool dormant() {
    return (file == nullptr) && (name != nullptr);
  }
  bool wakeUp();
  void goToSleep();
  int64_t getSize();
};

#endif