1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 2002
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Boris Zbarsky <bzbarsky@mit.edu> (original author)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
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30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #ifndef nsUnicharStreamLoader_h__
40 : #define nsUnicharStreamLoader_h__
41 :
42 : #include "nsIChannel.h"
43 : #include "nsIUnicharStreamLoader.h"
44 : #include "nsIUnicodeDecoder.h"
45 : #include "nsCOMPtr.h"
46 : #include "nsString.h"
47 :
48 : class nsIInputStream;
49 :
50 : class nsUnicharStreamLoader : public nsIUnicharStreamLoader
51 : {
52 : public:
53 : NS_DECL_ISUPPORTS
54 : NS_DECL_NSIUNICHARSTREAMLOADER
55 : NS_DECL_NSIREQUESTOBSERVER
56 : NS_DECL_NSISTREAMLISTENER
57 :
58 2 : nsUnicharStreamLoader() {}
59 8 : virtual ~nsUnicharStreamLoader() {}
60 :
61 : static nsresult Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
62 :
63 : protected:
64 : nsresult DetermineCharset();
65 :
66 : /**
67 : * callback method used for ReadSegments
68 : */
69 : static NS_METHOD WriteSegmentFun(nsIInputStream *, void *, const char *,
70 : PRUint32, PRUint32, PRUint32 *);
71 :
72 : nsCOMPtr<nsIUnicharStreamLoaderObserver> mObserver;
73 : nsCOMPtr<nsIUnicodeDecoder> mDecoder;
74 : nsCOMPtr<nsISupports> mContext;
75 : nsCOMPtr<nsIChannel> mChannel;
76 : nsCString mCharset;
77 :
78 : // This holds the first up-to-512 bytes of the raw stream.
79 : // It will be passed to the OnDetermineCharset callback.
80 : nsCString mRawData;
81 :
82 : // This holds the complete contents of the stream so far, after
83 : // decoding to UTF-16. It will be passed to the OnStreamComplete
84 : // callback.
85 : nsString mBuffer;
86 : };
87 :
88 : #endif // nsUnicharStreamLoader_h__
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