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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.
#include "components/autofill/core/common/autofill_l10n_util.h"
#include <utility>
#include "base/i18n/string_compare.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
namespace autofill::l10n {
std::unique_ptr<icu::Collator> GetCollatorForLocale(const icu::Locale& locale) {
UErrorCode error_code = U_ZERO_ERROR;
std::unique_ptr<icu::Collator> collator(
icu::Collator::createInstance(locale, error_code));
if (!collator || !U_SUCCESS(error_code)) {
// On some systems, the default locale is invalid to the eyes of the ICU
// library. This could be due to a device-specific issue (has been seen in
// the wild on Android and iOS devices). In the failure case, |collator|
// will be null. See http://crbug.com/558625.
icu::UnicodeString name;
std::string locale_name;
locale.getDisplayName(name).toUTF8String(locale_name);
LOG(ERROR) << "Failed to initialize the ICU Collator with locale "
<< locale_name;
// Attempt to load the English locale.
collator.reset(
icu::Collator::createInstance(icu::Locale::getEnglish(), error_code));
if (!collator || !U_SUCCESS(error_code)) {
LOG(ERROR) << "Failed to initialize the ICU Collator with the English "
<< "locale.";
}
}
return collator;
}
CaseInsensitiveCompare::CaseInsensitiveCompare()
: CaseInsensitiveCompare(icu::Locale::getDefault()) {}
CaseInsensitiveCompare::CaseInsensitiveCompare(const icu::Locale& locale)
: collator_(GetCollatorForLocale(locale)) {
if (collator_)
collator_->setStrength(icu::Collator::PRIMARY);
}
CaseInsensitiveCompare::~CaseInsensitiveCompare() = default;
bool CaseInsensitiveCompare::StringsEqual(std::u16string_view lhs,
std::u16string_view rhs) const {
if (collator_) {
return base::i18n::CompareString16WithCollator(*collator_, lhs, rhs) ==
UCOL_EQUAL;
}
return lhs == rhs;
}
} // namespace autofill::l10n
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