/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsImportScanFile_h__
#define nsImportScanFile_h__

#include "mozilla/Attributes.h"
#include "nsCOMPtr.h"
#include "nsIInputStream.h"

class nsImportScanFile {
 public:
  nsImportScanFile();
  virtual ~nsImportScanFile();

  void InitScan(nsIInputStream* pInputStream, uint8_t* pBuf, uint32_t sz);

  void CleanUpScan(void);

  virtual bool Scan(bool* pDone);

 protected:
  void ShiftBuffer(void);
  bool FillBufferFromFile(void);
  virtual bool ScanBuffer(bool* pDone);

 protected:
  nsCOMPtr<nsIInputStream> m_pInputStream;
  uint8_t* m_pBuf;
  uint32_t m_bufSz;
  uint32_t m_bytesInBuf;
  uint32_t m_pos;
  bool m_eof;
  bool m_allocated;
};

class nsImportScanFileLines : public nsImportScanFile {
 public:
  nsImportScanFileLines() { m_needEol = false; }

  void ResetLineScan(void) { m_needEol = false; }

  virtual bool ProcessLine(uint8_t* /* pLine */, uint32_t /* len */,
                           bool* /* pDone */) {
    return true;
  }

 protected:
  virtual bool ScanBuffer(bool* pDone) override;

  bool m_needEol;
};

#endif /* nsImportScanFile_h__ */