netwerk/streamconv/public/nsIStreamConverterService.idl@6474c204b198 (annotated)
netwerk/streamconv/public/nsIStreamConverterService.idl
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "nsISupports.idl" |
| michael@0 | 7 | |
| michael@0 | 8 | interface nsIInputStream; |
| michael@0 | 9 | interface nsIStreamListener; |
| michael@0 | 10 | |
| michael@0 | 11 | %{C++ |
| michael@0 | 12 | #define NS_ISTREAMCONVERTER_KEY "@mozilla.org/streamconv;1" |
| michael@0 | 13 | %} |
| michael@0 | 14 | |
| michael@0 | 15 | /** |
| michael@0 | 16 | * The nsIStreamConverterService is a higher level stream converter factory |
| michael@0 | 17 | * responsible for locating and creating stream converters |
| michael@0 | 18 | * (nsIStreamConverter). |
| michael@0 | 19 | * |
| michael@0 | 20 | * This service retrieves an interface that can convert data from a particular |
| michael@0 | 21 | * MIME type, to a particular MIME type. It is responsible for any intermediary |
| michael@0 | 22 | * conversion required in order to get from X to Z, assuming direct conversion |
| michael@0 | 23 | * is not possible. |
| michael@0 | 24 | * |
| michael@0 | 25 | * @author Jud Valeski |
| michael@0 | 26 | * @see nsIStreamConverter |
| michael@0 | 27 | */ |
| michael@0 | 28 | [scriptable, uuid(f2b1ab53-f0bd-4adb-9365-e59b1701a258)] |
| michael@0 | 29 | interface nsIStreamConverterService : nsISupports { |
| michael@0 | 30 | /** |
| michael@0 | 31 | * Tests whether conversion between the two specified types is possible. |
| michael@0 | 32 | * This is cheaper than calling convert()/asyncConvertData(); it is not |
| michael@0 | 33 | * necessary to call this function before calling one of those, though. |
| michael@0 | 34 | */ |
| michael@0 | 35 | boolean canConvert(in string aFromType, in string aToType); |
| michael@0 | 36 | |
| michael@0 | 37 | /** |
| michael@0 | 38 | * <b>SYNCHRONOUS VERSION</b> |
| michael@0 | 39 | * Converts a stream of one type, to a stream of another type. |
| michael@0 | 40 | * |
| michael@0 | 41 | * Use this method when you have a stream you want to convert. |
| michael@0 | 42 | * |
| michael@0 | 43 | * @param aFromStream The stream representing the original/raw data. |
| michael@0 | 44 | * @param aFromType The MIME type of aFromStream. |
| michael@0 | 45 | * @param aToType The MIME type of the returned stream. |
| michael@0 | 46 | * @param aContext Either an opaque context, or a converter specific |
| michael@0 | 47 | * context (implementation specific). |
| michael@0 | 48 | * @return The converted stream. NOTE: The returned stream |
| michael@0 | 49 | * may not already be converted. An efficient stream |
| michael@0 | 50 | * converter implementation will convert data on |
| michael@0 | 51 | * demand rather than buffering the converted data |
| michael@0 | 52 | * until it is used. |
| michael@0 | 53 | */ |
| michael@0 | 54 | nsIInputStream convert(in nsIInputStream aFromStream, |
| michael@0 | 55 | in string aFromType, |
| michael@0 | 56 | in string aToType, |
| michael@0 | 57 | in nsISupports aContext); |
| michael@0 | 58 | |
| michael@0 | 59 | /** |
| michael@0 | 60 | * <b>ASYNCHRONOUS VERSION</b> |
| michael@0 | 61 | * Retrieves a nsIStreamListener that receives the original/raw data via its |
| michael@0 | 62 | * nsIStreamListener::OnDataAvailable() callback, then converts and pushes |
| michael@0 | 63 | * the data to aListener. |
| michael@0 | 64 | * |
| michael@0 | 65 | * Use this method when you want to proxy (and convert) nsIStreamListener |
| michael@0 | 66 | * callbacks asynchronously. |
| michael@0 | 67 | * |
| michael@0 | 68 | * @param aFromType The MIME type of the original/raw data. |
| michael@0 | 69 | * @param aToType The MIME type of the converted data. |
| michael@0 | 70 | * @param aListener The listener that receives the converted data. |
| michael@0 | 71 | * @param aCtxt Either an opaque context, or a converter specific |
| michael@0 | 72 | * context (implementation specific). |
| michael@0 | 73 | * @return A nsIStreamListener that receives data via its |
| michael@0 | 74 | * OnDataAvailable() method. |
| michael@0 | 75 | */ |
| michael@0 | 76 | nsIStreamListener asyncConvertData(in string aFromType, |
| michael@0 | 77 | in string aToType, |
| michael@0 | 78 | in nsIStreamListener aListener, |
| michael@0 | 79 | in nsISupports aContext); |
| michael@0 | 80 | }; |
