dom/quota/FileStreams.h
author Sahil Chelaramani <Sahilc.2200@gmail.com>
Fri, 16 Aug 2013 09:18:13 -0400
changeset 142870 35afcb18f192a06f1ca5b672711af9723632c380
parent 126244 8d558e07caf4c6f9ef6660f2000f54754894e814
child 146523 8734ea74053b8cbcce4085cd1b6972e80b30b600
permissions -rw-r--r--
Bug 662669 - nsCharSeparatedTokenizer/nsWhiteSpaceSeparatedTokenizer should use RangedPtr. r=Waldo

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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 mozilla_dom_quota_filestreams_h__
#define mozilla_dom_quota_filestreams_h__

#include "QuotaCommon.h"

#include "nsFileStreams.h"

#include "QuotaObject.h"

BEGIN_QUOTA_NAMESPACE

template <class FileStreamBase>
class FileQuotaStream : public FileStreamBase
{
public:
  // nsFileStreamBase override
  NS_IMETHOD
  SetEOF() MOZ_OVERRIDE;

  NS_IMETHOD
  Close() MOZ_OVERRIDE;

protected:
  FileQuotaStream(const nsACString& aOrigin)
  : mOrigin(aOrigin)
  { }

  // nsFileStreamBase override
  virtual nsresult
  DoOpen() MOZ_OVERRIDE;

  nsCString mOrigin;
  nsRefPtr<QuotaObject> mQuotaObject;
};

template <class FileStreamBase>
class FileQuotaStreamWithWrite : public FileQuotaStream<FileStreamBase>
{
public:
  // nsFileStreamBase override
  NS_IMETHOD
  Write(const char* aBuf, uint32_t aCount, uint32_t* _retval) MOZ_OVERRIDE;

protected:
  FileQuotaStreamWithWrite(const nsACString& aOrigin)
  : FileQuotaStream<FileStreamBase>(aOrigin)
  { }
};

class FileInputStream : public FileQuotaStream<nsFileInputStream>
{
public:
  NS_DECL_ISUPPORTS_INHERITED

  static already_AddRefed<FileInputStream>
  Create(const nsACString& aOrigin, nsIFile* aFile, int32_t aIOFlags = -1,
         int32_t aPerm = -1, int32_t aBehaviorFlags = 0);

private:
  FileInputStream(const nsACString& aOrigin)
  : FileQuotaStream<nsFileInputStream>(aOrigin)
  { }

  virtual ~FileInputStream() {
    Close();
  }
};

class FileOutputStream : public FileQuotaStreamWithWrite<nsFileOutputStream>
{
public:
  NS_DECL_ISUPPORTS_INHERITED

  static already_AddRefed<FileOutputStream>
  Create(const nsACString& aOrigin, nsIFile* aFile, int32_t aIOFlags = -1,
         int32_t aPerm = -1, int32_t aBehaviorFlags = 0);

private:
  FileOutputStream(const nsACString& aOrigin)
  : FileQuotaStreamWithWrite<nsFileOutputStream>(aOrigin)
  { }

  virtual ~FileOutputStream() {
    Close();
  }
};

class FileStream : public FileQuotaStreamWithWrite<nsFileStream>
{
public:
  NS_DECL_ISUPPORTS_INHERITED

  static already_AddRefed<FileStream>
  Create(const nsACString& aOrigin, nsIFile* aFile, int32_t aIOFlags = -1,
         int32_t aPerm = -1, int32_t aBehaviorFlags = 0);

private:
  FileStream(const nsACString& aOrigin)
  : FileQuotaStreamWithWrite<nsFileStream>(aOrigin)
  { }

  virtual ~FileStream() {
    Close();
  }
};

END_QUOTA_NAMESPACE

#endif /* mozilla_dom_quota_filestreams_h__ */