1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
# Swift System
Swift System provides idiomatic interfaces to system calls and low-level currency types. Our vision is for System to act as the single home for low-level system interfaces for all supported Swift platforms.
## Multi-platform not Cross-platform
System is a multi-platform library, not a cross-platform one. It provides a separate set of APIs and behaviors on every supported platform, closely reflecting the underlying OS interfaces. A single import will pull in the native platform interfaces specific for the targeted OS.
Our immediate goal is to simplify building cross-platform libraries and applications such as SwiftNIO and SwiftPM. System does not eliminate the need for `#if os()` conditionals to implement cross-platform abstractions, but it does make it safer and more expressive to fill out the platform-specific parts.
## Usage
```swift
import SystemPackage
let message: String = "Hello, world!" + "\n"
let path: FilePath = "/tmp/log"
let fd = try FileDescriptor.open(
path, .writeOnly, options: [.append, .create], permissions: .ownerReadWrite)
try fd.closeAfter {
_ = try fd.writeAll(message.utf8)
}
```
## Adding `SystemPackage` as a Dependency
To use the `SystemPackage` library in a SwiftPM project,
add the following line to the dependencies in your `Package.swift` file:
```swift
.package(url: "https://github.com/apple/swift-system", from: "1.3.0"),
```
Finally, include `"SystemPackage"` as a dependency for your executable target:
```swift
let package = Package(
// name, platforms, products, etc.
dependencies: [
.package(url: "https://github.com/apple/swift-system", from: "1.3.0"),
// other dependencies
],
targets: [
.target(name: "MyTarget", dependencies: [
.product(name: "SystemPackage", package: "swift-system"),
]),
// other targets
]
)
```
## Source Stability
The Swift System package is source stable. The version numbers follow [Semantic Versioning][semver] -- source breaking changes to public API can only land in a new major version.
[semver]: https://semver.org
## Contributing
Before contributing, please read [CONTRIBUTING.md](CONTRIBUTING.md).
## LICENSE
See [LICENSE](LICENSE.txt) for license information.
|
