mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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185 lines
5.6 KiB
C++
185 lines
5.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsFileStreams_h__
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#define nsFileStreams_h__
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#include "nsIFileStreams.h"
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#include "nsIFile.h"
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#include "nsIInputStream.h"
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#include "nsIOutputStream.h"
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#include "nsISafeOutputStream.h"
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#include "nsISeekableStream.h"
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#include "nsILineInputStream.h"
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#include "nsCOMPtr.h"
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#include "prlog.h"
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#include "prio.h"
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template<class CharType> class nsLineBuffer;
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////////////////////////////////////////////////////////////////////////////////
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class nsFileStream : public nsISeekableStream
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSISEEKABLESTREAM
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nsFileStream();
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virtual ~nsFileStream();
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nsresult Close();
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nsresult InitWithFileDescriptor(PRFileDesc* fd, nsISupports* parent);
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protected:
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PRFileDesc* mFD;
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nsCOMPtr<nsISupports> mParent; // strong reference to parent nsFileIO,
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// which ensures mFD remains valid.
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PRBool mCloseFD;
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};
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////////////////////////////////////////////////////////////////////////////////
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class nsFileInputStream : public nsFileStream,
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public nsIFileInputStream,
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public nsILineInputStream
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{
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_NSIINPUTSTREAM
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NS_DECL_NSIFILEINPUTSTREAM
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NS_DECL_NSILINEINPUTSTREAM
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// Overrided from nsFileStream
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NS_IMETHOD Seek(PRInt32 aWhence, PRInt64 aOffset);
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nsFileInputStream() : nsFileStream()
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{
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mLineBuffer = nsnull;
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mBehaviorFlags = 0;
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}
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virtual ~nsFileInputStream()
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{
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Close();
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}
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static NS_METHOD
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Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
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protected:
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nsLineBuffer<char> *mLineBuffer;
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/**
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* The file being opened. Only stored when DELETE_ON_CLOSE or
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* REOPEN_ON_REWIND are true.
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*/
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nsCOMPtr<nsIFile> mFile;
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/**
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* The IO flags passed to Init() for the file open.
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* Only set for REOPEN_ON_REWIND.
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*/
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PRInt32 mIOFlags;
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/**
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* The permissions passed to Init() for the file open.
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* Only set for REOPEN_ON_REWIND.
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*/
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PRInt32 mPerm;
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/**
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* Flags describing our behavior. See the IDL file for possible values.
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*/
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PRInt32 mBehaviorFlags;
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protected:
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/**
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* Internal, called to open a file. Parameters are the same as their
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* Init() analogues.
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*/
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nsresult Open(nsIFile* file, PRInt32 ioFlags, PRInt32 perm);
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/**
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* Reopen the file (for OPEN_ON_READ only!)
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*/
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nsresult Reopen() { return Open(mFile, mIOFlags, mPerm); }
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};
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////////////////////////////////////////////////////////////////////////////////
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class nsFileOutputStream : public nsFileStream,
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public nsIFileOutputStream
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{
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_NSIOUTPUTSTREAM
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NS_DECL_NSIFILEOUTPUTSTREAM
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nsFileOutputStream() : nsFileStream() {}
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virtual ~nsFileOutputStream() { nsFileOutputStream::Close(); }
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static NS_METHOD
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Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
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};
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////////////////////////////////////////////////////////////////////////////////
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class nsSafeFileOutputStream : public nsFileOutputStream,
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public nsISafeOutputStream
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{
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_NSISAFEOUTPUTSTREAM
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nsSafeFileOutputStream() :
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mTargetFileExists(PR_TRUE),
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mWriteResult(NS_OK) {}
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virtual ~nsSafeFileOutputStream() { nsSafeFileOutputStream::Close(); }
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NS_IMETHODIMP Close();
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NS_IMETHODIMP Write(const char *buf, PRUint32 count, PRUint32 *result);
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NS_IMETHODIMP Init(nsIFile* file, PRInt32 ioFlags, PRInt32 perm, PRInt32 behaviorFlags);
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protected:
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nsCOMPtr<nsIFile> mTargetFile;
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nsCOMPtr<nsIFile> mTempFile;
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PRBool mTargetFileExists;
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nsresult mWriteResult; // Internally set in Write()
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};
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////////////////////////////////////////////////////////////////////////////////
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#endif // nsFileStreams_h__
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