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107 строки
4.6 KiB
Plaintext
107 строки
4.6 KiB
Plaintext
/* ***** 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.
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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) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@netscape.com>
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* Christian Biesinger <cbiesinger@web.de>
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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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#include "nsIRequest.idl"
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interface nsIInputStream;
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interface nsIStreamListener;
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/**
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* nsIInputStreamPump
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*
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* This interface provides a means to configure and use a input stream pump
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* instance. The input stream pump will asynchronously read from a input
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* stream, and push data to a nsIStreamListener instance. It utilizes the
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* current thread's nsIEventTarget in order to make reading from the stream
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* asynchronous.
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*
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* If the given stream supports nsIAsyncInputStream, then the stream pump will
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* call the stream's AsyncWait method to drive the stream listener. Otherwise,
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* the stream will be read on a background thread utilizing the stream
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* transport service. More details are provided below.
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*/
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[scriptable, uuid(400F5468-97E7-4d2b-9C65-A82AECC7AE82)]
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interface nsIInputStreamPump : nsIRequest
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{
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/**
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* Initialize the input stream pump.
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*
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* @param aStream
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* contains the data to be read. if the input stream is non-blocking,
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* then it will be QI'd to nsIAsyncInputStream. if the QI succeeds
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* then the stream will be read directly. otherwise, it will be read
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* on a background thread using the stream transport service.
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* @param aStreamPos
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* specifies the stream offset from which to start reading. the
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* offset value is absolute. pass -1 to specify the current offset.
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* NOTE: this parameter is ignored if the underlying stream does not
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* implement nsISeekableStream.
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* @param aStreamLen
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* specifies how much data to read from the stream. pass -1 to read
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* all data available in the stream.
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* @param aSegmentSize
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* if the stream transport service is used, then this parameter
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* specifies the segment size for the stream transport's buffer.
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* pass 0 to specify the default value.
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* @param aSegmentCount
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* if the stream transport service is used, then this parameter
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* specifies the segment count for the stream transport's buffer.
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* pass 0 to specify the default value.
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* @param aCloseWhenDone
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* if true, the input stream will be closed after it has been read.
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*/
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void init(in nsIInputStream aStream,
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in long long aStreamPos,
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in long long aStreamLen,
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in unsigned long aSegmentSize,
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in unsigned long aSegmentCount,
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in boolean aCloseWhenDone);
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/**
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* asyncRead causes the input stream to be read in chunks and delivered
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* asynchronously to the listener via OnDataAvailable.
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*
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* @param aListener
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* receives notifications.
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* @param aListenerContext
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* passed to listener methods.
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*/
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void asyncRead(in nsIStreamListener aListener,
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in nsISupports aListenerContext);
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};
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