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
34namespace WTF {
35
36Collator::Collator(const char*)
37{
38}
39
40Collator::~Collator()
41{
42}
43
44void Collator::setOrderLowerFirst(bool)
45{
46}
47
48PassOwnPtr<Collator> Collator::userDefault()
49{
50    return new Collator(0);
51}
52
53// A default implementation for platforms that lack Unicode-aware collation.
54Collator::Result Collator::collate(const UChar* lhs, size_t lhsLength, const UChar* 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
76