1 //
2 // Copyright (C) 2021 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 //! This module implements safe wrappers for GetProperty and SetProperty from libbase.
18 
19 pub use ffi::{GetProperty, SetProperty};
20 
21 /// Safe wrappers for the GetProperty and SetProperty methods from libbase.
22 #[cxx::bridge]
23 mod ffi {
24     unsafe extern "C++" {
25         include!("properties.hpp");
26 
27         /// Returns the current value of the system property `key`,
28         /// or `default_value` if the property is empty or doesn't exist.
GetProperty(key: &str, default_value: &str) -> String29         fn GetProperty(key: &str, default_value: &str) -> String;
30 
31         /// Sets the system property `key` to `value`.
SetProperty(key: &str, value: &str)32         fn SetProperty(key: &str, value: &str);
33     }
34 }
35