1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 : *
3 : * ***** BEGIN LICENSE BLOCK *****
4 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 : *
6 : * The contents of this file are subject to the Mozilla Public License Version
7 : * 1.1 (the "License"); you may not use this file except in compliance with
8 : * the License. You may obtain a copy of the License at
9 : * http://www.mozilla.org/MPL/
10 : *
11 : * Software distributed under the License is distributed on an "AS IS" basis,
12 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 : * for the specific language governing rights and limitations under the
14 : * License.
15 : *
16 : * The Original Code is nsCacheMetaData.h, released
17 : * February 22, 2001.
18 : *
19 : * The Initial Developer of the Original Code is
20 : * Netscape Communications Corporation.
21 : * Portions created by the Initial Developer are Copyright (C) 2001
22 : * the Initial Developer. All Rights Reserved.
23 : *
24 : * Contributor(s):
25 : * Gordon Sheridan <gordon@netscape.com>
26 : *
27 : * Alternatively, the contents of this file may be used under the terms of
28 : * either the GNU General Public License Version 2 or later (the "GPL"), or
29 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
30 : * in which case the provisions of the GPL or the LGPL are applicable instead
31 : * of those above. If you wish to allow use of your version of this file only
32 : * under the terms of either the GPL or the LGPL, and not to allow others to
33 : * use your version of this file under the terms of the MPL, indicate your
34 : * decision by deleting the provisions above and replace them with the notice
35 : * and other provisions required by the GPL or the LGPL. If you do not delete
36 : * the provisions above, a recipient may use your version of this file under
37 : * the terms of any one of the MPL, the GPL or the LGPL.
38 : *
39 : * ***** END LICENSE BLOCK ***** */
40 :
41 : #ifndef _nsCacheMetaData_h_
42 : #define _nsCacheMetaData_h_
43 :
44 : #include "nspr.h"
45 : #include "nscore.h"
46 :
47 : class nsICacheMetaDataVisitor;
48 :
49 : class nsCacheMetaData {
50 : public:
51 1385 : nsCacheMetaData() : mBuffer(nsnull), mBufferSize(0), mMetaSize(0) { }
52 :
53 1385 : ~nsCacheMetaData() {
54 1385 : mBufferSize = mMetaSize = 0;
55 1385 : PR_FREEIF(mBuffer);
56 1385 : }
57 :
58 : const char * GetElement(const char * key);
59 :
60 : nsresult SetElement(const char * key, const char * value);
61 :
62 10025 : PRUint32 Size(void) { return mMetaSize; }
63 :
64 : nsresult FlattenMetaData(char * buffer, PRUint32 bufSize);
65 :
66 : nsresult UnflattenMetaData(const char * buffer, PRUint32 bufSize);
67 :
68 : nsresult VisitElements(nsICacheMetaDataVisitor * visitor);
69 :
70 : private:
71 : nsresult EnsureBuffer(PRUint32 size);
72 :
73 : char * mBuffer;
74 : PRUint32 mBufferSize;
75 : PRUint32 mMetaSize;
76 : };
77 :
78 : #endif // _nsCacheMetaData_h
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