1 : /* -*- Mode: C++; tab-width: 2; 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 Communicator client 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) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either of the GNU General Public License Version 2 or later (the "GPL"),
26 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
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36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #include "mozilla/Util.h"
39 :
40 : #include "nsCharsetAlias.h"
41 : #include "pratom.h"
42 :
43 : // for NS_IMPL_IDS only
44 : #include "nsIPlatformCharset.h"
45 :
46 : #include "nsReadableUtils.h"
47 : #include "nsUnicharUtils.h"
48 : #include "nsUConvPropertySearch.h"
49 :
50 : using namespace mozilla;
51 :
52 : //
53 : static const char* kAliases[][3] = {
54 : #include "charsetalias.properties.h"
55 : };
56 :
57 : //--------------------------------------------------------------
58 : // static
59 : nsresult
60 30514 : nsCharsetAlias::GetPreferred(const nsACString& aAlias,
61 : nsACString& oResult)
62 : {
63 30514 : if (aAlias.IsEmpty()) return NS_ERROR_NULL_POINTER;
64 :
65 58650 : nsCAutoString key(aAlias);
66 29325 : ToLowerCase(key);
67 :
68 : return nsUConvPropertySearch::SearchPropertyValue(kAliases,
69 29325 : ArrayLength(kAliases), key, oResult);
70 : }
71 :
72 : //--------------------------------------------------------------
73 : // static
74 : nsresult
75 591 : nsCharsetAlias::Equals(const nsACString& aCharset1,
76 : const nsACString& aCharset2, bool* oResult)
77 : {
78 591 : nsresult res = NS_OK;
79 :
80 591 : if(aCharset1.Equals(aCharset2, nsCaseInsensitiveCStringComparator())) {
81 412 : *oResult = true;
82 412 : return res;
83 : }
84 :
85 179 : if(aCharset1.IsEmpty() || aCharset2.IsEmpty()) {
86 0 : *oResult = false;
87 0 : return res;
88 : }
89 :
90 179 : *oResult = false;
91 358 : nsCAutoString name1;
92 179 : res = GetPreferred(aCharset1, name1);
93 179 : if (NS_FAILED(res))
94 0 : return res;
95 :
96 358 : nsCAutoString name2;
97 179 : res = GetPreferred(aCharset2, name2);
98 179 : if (NS_FAILED(res))
99 0 : return res;
100 :
101 179 : *oResult = name1.Equals(name2);
102 179 : return NS_OK;
103 : }
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