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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_AUTOFILL_CORE_COMMON_AUTOFILL_L10N_UTIL_H_
#define COMPONENTS_AUTOFILL_CORE_COMMON_AUTOFILL_L10N_UTIL_H_
#include <memory>
#include <string_view>
#include "third_party/icu/source/common/unicode/locid.h"
#include "third_party/icu/source/i18n/unicode/coll.h"
namespace autofill::l10n {
// Obtains the ICU Collator for this locale. If unsuccessful, attempts to return
// the ICU collator for the English locale. If unsuccessful, returns null.
std::unique_ptr<icu::Collator> GetCollatorForLocale(const icu::Locale& locale);
// Assists with locale-aware case insensitive string comparisons.
// The `collator_` member is initialized in the constructor, which triggers the
// loading of locale-specific rules. While these rules are cached, loading them
// for the first time can be slow. Avoid adding this class as member variable to
// other classes for this reason. See e.g. crbug.com/1410875.
class CaseInsensitiveCompare {
public:
CaseInsensitiveCompare();
// Used for testing.
explicit CaseInsensitiveCompare(const icu::Locale& locale);
CaseInsensitiveCompare(const CaseInsensitiveCompare&) = delete;
CaseInsensitiveCompare& operator=(const CaseInsensitiveCompare&) = delete;
~CaseInsensitiveCompare();
bool StringsEqual(std::u16string_view lhs, std::u16string_view rhs) const;
private:
std::unique_ptr<icu::Collator> collator_;
};
} // namespace autofill::l10n
#endif // COMPONENTS_AUTOFILL_CORE_COMMON_AUTOFILL_L10N_UTIL_H_
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