1 /*
2  * Copyright (C) 2023 The Android Open Source Project
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 #ifndef ANDROID_SERVERS_CAMERA_STRINGUTILS_H
18 #define ANDROID_SERVERS_CAMERA_STRINGUTILS_H
19 
20 #include <memory>
21 #include <optional>
22 #include <string>
23 
24 #include <fmt/printf.h>
25 #include <utils/String8.h>
26 #include <utils/String16.h>
27 
28 namespace android {
toString8(const std::string & str)29     inline String8 toString8(const std::string &str) {
30         return String8(str.c_str());
31     }
32 
toString8(const String16 & str)33     inline String8 toString8(const String16 &str) {
34         return String8(str);
35     }
36 
toString8(const char * str)37     inline String8 toString8(const char *str) {
38         return String8(str);
39     }
40 
toString16(const std::string & str)41     inline String16 toString16(const std::string &str) {
42         return String16(str.c_str());
43     }
44 
toString16(const String8 & str)45     inline String16 toString16(const String8 &str) {
46         return String16(str);
47     }
48 
toString16(const char * str)49     inline String16 toString16(const char *str) {
50         return String16(str);
51     }
52 
toString16(std::optional<std::string> str)53     inline std::optional<String16> toString16(std::optional<std::string> str) {
54         if (str.has_value()) {
55             return std::optional<String16>(toString16(str.value()));
56         }
57 
58         return std::nullopt;
59     }
60 
toStdString(const String8 & str)61     inline std::string toStdString(const String8 &str) {
62         return std::string(str.c_str());
63     }
64 
toStdString(const String16 & str)65     inline std::string toStdString(const String16 &str) {
66         String8 str8(str);
67         return std::string(str8.c_str());
68     }
69 
70     /**
71      * Convert a non-null-terminated UTF16 string to a UTF8 string (i.e. in jni functions)
72      * len is the number of characters.
73      */
toStdString(const char16_t * str,size_t len)74     inline std::string toStdString(const char16_t *str, size_t len) {
75         String16 str16(str, len);
76         String8 str8(str16);
77         return std::string(str8.c_str());
78     }
79 } // namespace android
80 
81 #endif // ANDROID_SERVERS_CAMERA_STRINGUTILS_H
82