| // Copyright (C) 2019 Google LLC |
| // |
| // 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 "icing/testing/i18n-test-utils.h" |
| |
| #include <cstdint> |
| #include <string> |
| |
| #include "icing/util/logging.h" |
| #include "unicode/umachine.h" |
| #include "unicode/utf8.h" |
| |
| namespace icing { |
| namespace lib { |
| |
| std::string UcharToString(UChar32 uchar) { |
| std::string result; |
| uint8_t utf8_buffer[4]; // U8_APPEND writes 0 to 4 bytes |
| |
| int utf8_index = 0; |
| UBool has_error = FALSE; |
| |
| // utf8_index is advanced to the end of the contents if successful |
| U8_APPEND(utf8_buffer, utf8_index, sizeof(utf8_buffer), uchar, has_error); |
| |
| if (has_error) { |
| ICING_VLOG(1) << "Error converting UChar32 to UTF8"; |
| return ""; |
| } |
| result.append(reinterpret_cast<char*>(utf8_buffer), utf8_index); |
| return result; |
| } |
| |
| } // namespace lib |
| } // namespace icing |