base/i18n/string_compare.cc

   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
  10 namespace base {
  11 namespace i18n {
  12
  13 // Compares the character data stored in two different string16 strings by
  14 // specified Collator instance.
  15 UCollationResult 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