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91 lines
3.4 KiB
C++
91 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsIPipe2_h___
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#define nsIPipe2_h___
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#include "nsIBufferInputStream.h"
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#include "nsIBufferOutputStream.h"
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#define NS_IPIPEOBSERVER_IID \
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{ /* 3c87cec0-4e28-11d3-9369-00104ba0fd40 */ \
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0x3c87cec0, \
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0x4e28, \
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0x11d3, \
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{0x93, 0x69, 0x00, 0x10, 0x4b, 0xa0, 0xfd, 0x40} \
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}
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class nsIPipeObserver : public nsISupports {
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_IPIPEOBSERVER_IID);
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NS_IMETHOD OnFull() = 0;
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NS_IMETHOD OnWrite(PRUint32 amount) = 0;
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NS_IMETHOD OnEmpty() = 0;
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};
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#if 0
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/**
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* The signature for the reader function passed to WriteSegment. This
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* specifies where the data should come from that gets written into the buffer.
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* Implementers should return the following:
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* @return NS_OK and readCount - if successfully read something
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* @return NS_BASE_STREAM_EOF - if no more to read
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* @return NS_BASE_STREAM_WOULD_BLOCK - if there is currently no data (in
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* a non-blocking mode)
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* @return <other-error> - on failure
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*/
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typedef NS_CALLBACK(nsReadSegmentFun)(void* closure,
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char* toRawSegment,
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PRUint32 fromOffset,
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PRUint32 count,
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PRUint32 *readCount);
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/**
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* The signature of the writer function passed to ReadSegments. This
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* specifies where the data should go that gets read from the buffer.
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* Implementers should return the following:
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* @return NS_OK and writeCount - if successfully wrote something
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* @return NS_BASE_STREAM_CLOSED - if no more can be written
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* @return NS_BASE_STREAM_WOULD_BLOCK - if there is currently space to write (in
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* a non-blocking mode)
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* @return <other-error> - on failure
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*/
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typedef NS_CALLBACK(nsWriteSegmentFun)(void* closure,
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const char* fromRawSegment,
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PRUint32 toOffset,
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PRUint32 count,
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PRUint32 *writeCount);
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#endif
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#define NS_PIPE_DEFAULT_SEGMENT_SIZE 4096
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#define NS_PIPE_DEFAULT_BUFFER_SIZE (1024*1024)
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extern NS_COM nsresult
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NS_NewPipe(nsIBufferInputStream* *inStrResult,
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nsIBufferOutputStream* *outStrResult,
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nsIPipeObserver* observer = nsnull,
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PRUint32 segmentSize = NS_PIPE_DEFAULT_SEGMENT_SIZE,
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PRUint32 maxSize = NS_PIPE_DEFAULT_BUFFER_SIZE);
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////////////////////////////////////////////////////////////////////////////////
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#endif // nsIPipe2_h___
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