76 строки
2.9 KiB
Plaintext
76 строки
2.9 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
#include "nsIOutputStream.idl"
|
|
|
|
interface nsIBuffer;
|
|
|
|
%{C++
|
|
/**
|
|
* The signature for the reader function passed to WriteSegment. This
|
|
* specifies where the data should come from that gets written into the buffer.
|
|
* Implementers should return the following:
|
|
* @return NS_OK and readCount > 0 - if successfully read something
|
|
* @return NS_OK and readCount == 0 - if no more to read (EOF)
|
|
* @return NS_BASE_STREAM_WOULD_BLOCK - if there is currently no data (in
|
|
* a non-blocking mode)
|
|
* @return <other-error> - on failure
|
|
*/
|
|
typedef NS_CALLBACK(nsReadSegmentFun)(void* closure,
|
|
char* toRawSegment,
|
|
PRUint32 fromOffset,
|
|
PRUint32 count,
|
|
PRUint32 *readCount);
|
|
%}
|
|
|
|
native nsReadSegmentFun(nsReadSegmentFun);
|
|
|
|
[scriptable, uuid(d2aaae66-1ab0-11d3-8ccd-0060b0fc14a3)]
|
|
interface nsIBufferOutputStream : nsIOutputStream
|
|
{
|
|
/**
|
|
* Returns the buffer underlying this output stream.
|
|
*/
|
|
readonly attribute nsIBuffer Buffer;
|
|
|
|
[noscript] unsigned long WriteSegments(in nsReadSegmentFun reader,
|
|
in voidStar closure,
|
|
in unsigned long count);
|
|
|
|
/**
|
|
* Writes data into the stream from an input stream.
|
|
* Implementer's note: This method is defined by this interface in order
|
|
* to allow the output stream to efficiently copy the data from the input
|
|
* stream into its internal buffer (if any). If this method was provide
|
|
* as an external facility, a separate char* buffer would need to be used
|
|
* in order to call the output stream's other Write method.
|
|
* @param fromStream the stream from which the data is read
|
|
* @param count the maximun number of bytes to write
|
|
* @return aWriteCount out parameter to hold the number of
|
|
* bytes written. if an error occurs, the writecount
|
|
* is undefined
|
|
*/
|
|
unsigned long WriteFrom(in nsIInputStream inStr,
|
|
in unsigned long count);
|
|
|
|
/**
|
|
* Set this attribute to put the stream in non-blocking mode.
|
|
*/
|
|
attribute boolean NonBlocking;
|
|
};
|