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32 lines
1.4 KiB
Plaintext
32 lines
1.4 KiB
Plaintext
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsIInputStream.idl"
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[scriptable, builtinclass, uuid(8149be1f-44d3-4f14-8b65-a57a5fbbeb97)]
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interface nsICloneableInputStream : nsISupports
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{
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// Allow streams that implement the interface to determine if cloning
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// possible at runtime. For example, this allows wrappers to check if
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// their base stream supports cloning.
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[infallible] readonly attribute boolean cloneable;
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// Produce a copy of the current stream in the most efficient way possible.
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// In this case "copy" means that both the original and cloned streams
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// should produce the same bytes for all future reads. Bytes that have
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// already been consumed from the original stream are not copied to the
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// clone. Operations on the two streams should be completely independent
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// after the clone() occurs.
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nsIInputStream clone();
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};
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// This interface implements cloneWithRange() because for some streams
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// (IPCBlobInputStream only, so far) are more efficient to produce a sub
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// stream with range than doing clone + SlicedInputStream().
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[scriptable, builtinclass, uuid(ece853c3-aded-4cef-8f51-0d1493d60bd5)]
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interface nsICloneableInputStreamWithRange : nsICloneableInputStream
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{
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nsIInputStream cloneWithRange(in uint64_t start, in uint64_t length);
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};
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