/usr/share/idl/thunderbird/nsIInputStreamPump.idl is in thunderbird-dev 1:52.8.0-1~deb8u1.
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* 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/. */
#include "nsIRequest.idl"
interface nsIInputStream;
interface nsIStreamListener;
/**
* nsIInputStreamPump
*
* This interface provides a means to configure and use a input stream pump
* instance. The input stream pump will asynchronously read from an input
* stream, and push data to an nsIStreamListener instance. It utilizes the
* current thread's nsIEventTarget in order to make reading from the stream
* asynchronous. A different thread can be used if the pump also implements
* nsIThreadRetargetableRequest.
*
* If the given stream supports nsIAsyncInputStream, then the stream pump will
* call the stream's AsyncWait method to drive the stream listener. Otherwise,
* the stream will be read on a background thread utilizing the stream
* transport service. More details are provided below.
*/
[scriptable, uuid(400F5468-97E7-4d2b-9C65-A82AECC7AE82)]
interface nsIInputStreamPump : nsIRequest
{
/**
* Initialize the input stream pump.
*
* @param aStream
* contains the data to be read. if the input stream is non-blocking,
* then it will be QI'd to nsIAsyncInputStream. if the QI succeeds
* then the stream will be read directly. otherwise, it will be read
* on a background thread using the stream transport service.
* @param aStreamPos
* specifies the stream offset from which to start reading. the
* offset value is absolute. pass -1 to specify the current offset.
* NOTE: this parameter is ignored if the underlying stream does not
* implement nsISeekableStream.
* @param aStreamLen
* specifies how much data to read from the stream. pass -1 to read
* all data available in the stream.
* @param aSegmentSize
* if the stream transport service is used, then this parameter
* specifies the segment size for the stream transport's buffer.
* pass 0 to specify the default value.
* @param aSegmentCount
* if the stream transport service is used, then this parameter
* specifies the segment count for the stream transport's buffer.
* pass 0 to specify the default value.
* @param aCloseWhenDone
* if true, the input stream will be closed after it has been read.
*/
void init(in nsIInputStream aStream,
in long long aStreamPos,
in long long aStreamLen,
in unsigned long aSegmentSize,
in unsigned long aSegmentCount,
in boolean aCloseWhenDone);
/**
* asyncRead causes the input stream to be read in chunks and delivered
* asynchronously to the listener via OnDataAvailable.
*
* @param aListener
* receives notifications.
* @param aListenerContext
* passed to listener methods.
*/
void asyncRead(in nsIStreamListener aListener,
in nsISupports aListenerContext);
};
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