1 | /* |
2 | * Copyright (c) Facebook, Inc. and its affiliates. |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. |
6 | * You may obtain a copy of the License at |
7 | * |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * |
10 | * Unless required by applicable law or agreed to in writing, software |
11 | * distributed under the License is distributed on an "AS IS" BASIS, |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
13 | * See the License for the specific language governing permissions and |
14 | * limitations under the License. |
15 | */ |
16 | |
17 | // Some utility routines relating to unicode. |
18 | |
19 | #pragma once |
20 | |
21 | #include <string> |
22 | |
23 | namespace folly { |
24 | |
25 | ////////////////////////////////////////////////////////////////////// |
26 | |
27 | /* |
28 | * Encode a single unicode code point into a UTF-8 byte sequence. |
29 | * |
30 | * Return value is undefined if `cp' is an invalid code point. |
31 | */ |
32 | std::string codePointToUtf8(char32_t cp); |
33 | |
34 | /* |
35 | * Decode a single unicode code point from UTF-8 byte sequence. |
36 | */ |
37 | char32_t utf8ToCodePoint( |
38 | const unsigned char*& p, |
39 | const unsigned char* const e, |
40 | bool skipOnError); |
41 | |
42 | ////////////////////////////////////////////////////////////////////// |
43 | |
44 | } // namespace folly |
45 | |