* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "index_util.h"
#include "locale_config.h"
#include "locid.h"
#include "string"
#include "unistr.h"
#include "utypes.h"
#include "vector"
namespace OHOS {
namespace Global {
namespace I18n {
IndexUtil::IndexUtil(const std::string &localeTag)
{
UErrorCode status = U_ZERO_ERROR;
if (localeTag == "") {
icu::Locale locale(LocaleConfig::GetSystemLocale().c_str());
index = std::make_unique<icu::AlphabeticIndex>(locale, status);
} else {
icu::Locale locale(localeTag.c_str());
index = std::make_unique<icu::AlphabeticIndex>(locale, status);
}
if (U_SUCCESS(status)) {
createSuccess = true;
}
}
IndexUtil::~IndexUtil()
{
}
std::vector<std::string> IndexUtil::GetIndexList()
{
UErrorCode status = U_ZERO_ERROR;
std::vector<std::string> indexList;
if (!createSuccess) {
return indexList;
}
index->resetBucketIterator(status);
while (index->nextBucket(status)) {
if (U_SUCCESS(status)) {
icu::UnicodeString unicodeString = index->getBucketLabel();
std::string label;
unicodeString.toUTF8String(label);
indexList.push_back(label);
}
}
return indexList;
}
void IndexUtil::AddLocale(const std::string &localeTag)
{
UErrorCode status = U_ZERO_ERROR;
icu::Locale locale(localeTag.c_str());
if (createSuccess) {
index->addLabels(locale, status);
}
}
std::string IndexUtil::GetIndex(const std::string &String)
{
if (!createSuccess) {
return "";
}
UErrorCode status = U_ZERO_ERROR;
icu::UnicodeString unicodeString(String.c_str());
int32_t bucketNumber = index->getBucketIndex(unicodeString, status);
if (!U_SUCCESS(status)) {
return "";
}
index->resetBucketIterator(status);
for (int32_t i = 0; i <= bucketNumber; i++) {
index->nextBucket(status);
if (!U_SUCCESS(status)) {
return "";
}
}
icu::UnicodeString label = index->getBucketLabel();
std::string result;
label.toUTF8String(result);
return result;
}
}
}
}