string_compare.cc revision 868fa2fe829687343ffae624259930155e16dbd8 
1// Copyright (c) 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/i18n/string_compare.h"
6
7#include "base/logging.h"
8#include "base/strings/utf_string_conversions.h"
9
10namespace base {
11namespace i18n {
12
13// Compares the character data stored in two different string16 strings by
14// specified Collator instance.
15UCollationResult CompareString16WithCollator(const icu::Collator* collator,
16                                             const string16& lhs,
17                                             const string16& rhs) {
18  DCHECK(collator);
19  UErrorCode error = U_ZERO_ERROR;
20  UCollationResult result = collator->compare(
21      static_cast<const UChar*>(lhs.c_str()), static_cast<int>(lhs.length()),
22      static_cast<const UChar*>(rhs.c_str()), static_cast<int>(rhs.length()),
23      error);
24  DCHECK(U_SUCCESS(error));
25  return result;
26}
27
28}  // namespace i18n
29}  // namespace base
30