1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15#include "i18n_normalizer.h"
16
17namespace OHOS {
18namespace Global {
19namespace I18n {
20I18nNormalizer::I18nNormalizer(I18nNormalizerMode mode, I18nErrorCode &errorCode)
21{
22    UErrorCode status = U_ZERO_ERROR;
23    if (mode == I18nNormalizerMode::NFC) {
24        normalizer = icu::Normalizer2::getNFCInstance(status);
25    } else if (mode == I18nNormalizerMode::NFD) {
26        normalizer = icu::Normalizer2::getNFDInstance(status);
27    } else if (mode == I18nNormalizerMode::NFKC) {
28        normalizer = icu::Normalizer2::getNFKCInstance(status);
29    } else {
30        // mode == I18nNormalizerMode::NFKD
31        normalizer = icu::Normalizer2::getNFKDInstance(status);
32    }
33    if (U_FAILURE(status)) {
34        errorCode = I18nErrorCode::FAILED;
35    }
36}
37
38I18nNormalizer::~I18nNormalizer()
39{
40}
41
42std::string I18nNormalizer::Normalize(const char *text, int32_t length, I18nErrorCode &errorCode)
43{
44    UErrorCode status = U_ZERO_ERROR;
45    std::string result;
46    if (text == nullptr) {
47        return result;
48    }
49    icu::UnicodeString input(text, length);
50    icu::UnicodeString output = normalizer->normalize(input, status);
51    if (U_FAILURE(status)) {
52        errorCode = I18nErrorCode::FAILED;
53        return "";
54    }
55    output.toUTF8String(result);
56    return result;
57}
58} // namespace I18n
59} // namespace Global
60} // namespace OHOS