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1 /* | |
2 * Copyright (C) 2008 Apple Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions | |
6 * are met: | |
7 * | |
8 * 1. Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright | |
11 * notice, this list of conditions and the following disclaimer in the | |
12 * documentation and/or other materials provided with the distribution. | |
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of | |
14 * its contributors may be used to endorse or promote products derived | |
15 * from this software without specific prior written permission. | |
16 * | |
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 */ | |
28 | |
29 #include "config.h" | |
30 #include "Collator.h" | |
31 | |
32 #if !USE(ICU_UNICODE) || UCONFIG_NO_COLLATION | |
33 | |
34 namespace WTF { | |
35 | |
36 Collator::Collator(const char*) | |
37 { | |
38 } | |
39 | |
40 Collator::~Collator() | |
41 { | |
42 } | |
43 | |
44 void Collator::setOrderLowerFirst(bool) | |
45 { | |
46 } | |
47 | |
48 PassOwnPtr<Collator> Collator::userDefault() | |
49 { | |
50 return adoptPtr(new Collator(0)); | |
51 } | |
52 | |
53 // A default implementation for platforms that lack Unicode-aware collation. | |
54 Collator::Result Collator::collate(const UChar* lhs, size_t lhsLength, const UCh
ar* rhs, size_t rhsLength) const | |
55 { | |
56 int lmin = lhsLength < rhsLength ? lhsLength : rhsLength; | |
57 int l = 0; | |
58 while (l < lmin && *lhs == *rhs) { | |
59 lhs++; | |
60 rhs++; | |
61 l++; | |
62 } | |
63 | |
64 if (l < lmin) | |
65 return (*lhs > *rhs) ? Greater : Less; | |
66 | |
67 if (lhsLength == rhsLength) | |
68 return Equal; | |
69 | |
70 return (lhsLength > rhsLength) ? Greater : Less; | |
71 } | |
72 | |
73 } | |
74 | |
75 #endif | |
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