mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
141 lines
2.9 KiB
C++
141 lines
2.9 KiB
C++
/* -*- 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_indexeddb_filestream_h__
|
|
#define mozilla_dom_indexeddb_filestream_h__
|
|
|
|
#include "IndexedDatabase.h"
|
|
|
|
#include "nsIFileStreams.h"
|
|
#include "nsIInputStream.h"
|
|
#include "nsIOutputStream.h"
|
|
#include "nsISeekableStream.h"
|
|
#include "nsIStandardFileStream.h"
|
|
|
|
class nsIFile;
|
|
struct quota_FILE;
|
|
|
|
BEGIN_INDEXEDDB_NAMESPACE
|
|
|
|
class FileStream : public nsISeekableStream,
|
|
public nsIInputStream,
|
|
public nsIOutputStream,
|
|
public nsIStandardFileStream,
|
|
public nsIFileMetadata
|
|
{
|
|
public:
|
|
FileStream()
|
|
: mFlags(0),
|
|
mDeferredOpen(false),
|
|
mQuotaFile(nullptr)
|
|
{ }
|
|
|
|
virtual ~FileStream()
|
|
{
|
|
Close();
|
|
}
|
|
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSISEEKABLESTREAM
|
|
NS_DECL_NSISTANDARDFILESTREAM
|
|
NS_DECL_NSIFILEMETADATA
|
|
|
|
// nsIInputStream
|
|
NS_IMETHOD
|
|
Close();
|
|
|
|
NS_IMETHOD
|
|
Available(PRUint64* _retval);
|
|
|
|
NS_IMETHOD
|
|
Read(char* aBuf, PRUint32 aCount, PRUint32* _retval);
|
|
|
|
NS_IMETHOD
|
|
ReadSegments(nsWriteSegmentFun aWriter, void* aClosure, PRUint32 aCount,
|
|
PRUint32* _retval);
|
|
|
|
NS_IMETHOD
|
|
IsNonBlocking(bool* _retval);
|
|
|
|
// nsIOutputStream
|
|
|
|
// Close() already declared
|
|
|
|
NS_IMETHOD
|
|
Flush();
|
|
|
|
NS_IMETHOD
|
|
Write(const char* aBuf, PRUint32 aCount, PRUint32* _retval);
|
|
|
|
NS_IMETHOD
|
|
WriteFrom(nsIInputStream* aFromStream, PRUint32 aCount, PRUint32* _retval);
|
|
|
|
NS_IMETHOD
|
|
WriteSegments(nsReadSegmentFun aReader, void* aClosure, PRUint32 aCount,
|
|
PRUint32* _retval);
|
|
|
|
// IsNonBlocking() already declared
|
|
|
|
protected:
|
|
/**
|
|
* Cleans up data prepared in Init.
|
|
*/
|
|
void
|
|
CleanUpOpen()
|
|
{
|
|
mFilePath.Truncate();
|
|
mDeferredOpen = false;
|
|
}
|
|
|
|
/**
|
|
* Open the file. This is called either from Init
|
|
* or from DoPendingOpen (if FLAGS_DEFER_OPEN is used when initializing this
|
|
* stream). The default behavior of DoOpen is to open the file and save the
|
|
* file descriptor.
|
|
*/
|
|
virtual nsresult
|
|
DoOpen();
|
|
|
|
/**
|
|
* If there is a pending open, do it now. It's important for this to be
|
|
* inlined since we do it in almost every stream API call.
|
|
*/
|
|
nsresult
|
|
DoPendingOpen()
|
|
{
|
|
if (!mDeferredOpen) {
|
|
return NS_OK;
|
|
}
|
|
|
|
return DoOpen();
|
|
}
|
|
|
|
/**
|
|
* Data we need to do an open.
|
|
*/
|
|
nsString mFilePath;
|
|
nsString mMode;
|
|
|
|
/**
|
|
* Flags describing our behavior. See the IDL file for possible values.
|
|
*/
|
|
PRInt32 mFlags;
|
|
|
|
/**
|
|
* Whether we have a pending open (see FLAGS_DEFER_OPEN in the IDL file).
|
|
*/
|
|
bool mDeferredOpen;
|
|
|
|
/**
|
|
* File descriptor for opened file.
|
|
*/
|
|
quota_FILE* mQuotaFile;
|
|
};
|
|
|
|
END_INDEXEDDB_NAMESPACE
|
|
|
|
#endif // mozilla_dom_indexeddb_filestream_h__
|