/usr/share/idl/firefox/nsISafeOutputStream.idl is in firefox-dev 11.0+build1-0ubuntu4.
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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Michiel van Leeuwen (mvl@exedo.nl).
* Portions created by the Initial Developer are Copyright (C) 2004
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Daniel Witte (dwitte@stanford.edu)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* ***** END LICENSE BLOCK ***** */
#include "nsISupports.idl"
/**
* This interface provides a mechanism to control an output stream
* that takes care not to overwrite an existing target until it is known
* that all writes to the destination succeeded.
*
* An object that supports this interface is intended to also support
* nsIOutputStream.
*
* For example, a file output stream that supports this interface writes to
* a temporary file, and moves it over the original file when |finish| is
* called only if the stream can be successfully closed and all writes
* succeeded. If |finish| is called but something went wrong during
* writing, it will delete the temporary file and not touch the original.
* If the stream is closed by calling |close| directly, or the stream
* goes away, the original file will not be overwritten, and the temporary
* file will be deleted.
*
* Currently, this interface is implemented only for file output streams.
*/
[scriptable, uuid(5f914307-5c34-4e1f-8e32-ec749d25b27a)]
interface nsISafeOutputStream : nsISupports
{
/**
* Call this method to close the stream and cause the original target
* to be overwritten. Note: if any call to |write| failed to write out
* all of the data given to it, then calling this method will |close| the
* stream and return failure. Further, if closing the stream fails, this
* method will return failure. The original target will be overwritten only
* if all calls to |write| succeeded and the stream was successfully closed.
*/
void finish();
};
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