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https://github.com/nvzqz/FileKit

Simple and expressive file management in Swift
https://github.com/nvzqz/FileKit

files paths swift

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Simple and expressive file management in Swift

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    Language: Swift

    

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    Installation

  • Usage

  • License

  • Documentation




FileKit is a Swift framework that allows for simple and expressive file management.



Development happens in the

[`develop`](https://github.com/nvzqz/FileKit/tree/develop) branch.



## Installation



### Compatibility



- OS X 10.9+ / iOS 8.0+ / watchOS 2.0 / tvOS 9.0



- Xcode 7.1+, Swift 2.1+



### Install Using CocoaPods

[CocoaPods](https://cocoapods.org/) is a centralized dependency manager for

Objective-C and Swift. Go [here](https://guides.cocoapods.org/using/index.html)

to learn more.



1. Add the project to your [Podfile](https://guides.cocoapods.org/using/the-podfile.html).



    ```ruby

    use_frameworks!



    pod 'FileKit', '~> 5.0.0'

    ```



2. Run `pod install` and open the `.xcworkspace` file to launch Xcode.



3. Import the FileKit framework.



    ```swift

    import FileKit

    ```



### Install Using Carthage

[Carthage](https://github.com/Carthage/Carthage) is a decentralized dependency

manager for Objective-C and Swift.



1. Add the project to your [Cartfile](https://github.com/Carthage/Carthage/blob/master/Documentation/Artifacts.md#cartfile).



    ```

    github "nvzqz/FileKit"

    ```



2. Run `carthage update` and follow [the additional steps](https://github.com/Carthage/Carthage#getting-started)

   in order to add FileKit to your project.



3. Import the FileKit framework.



    ```swift

    import FileKit

    ```



## Usage



### Paths



Paths are handled with the `Path` structure.



```swift

let home = Path("~")

let drive: Path = "/Volumes/Macintosh HD"

let file:  Path = "~/Desktop/file\(1)"

```



#### Operations



##### New Files



A blank file can be written by calling `createFile()` on an `Path`.



```swift

try Path(".gitignore").createFile()

```



##### New Directories



A directory can be created by calling `createDirectory()` on an `Path`.



```swift

try Path("~/Files").createDirectory()

try Path("~/Books").createDirectory(withIntermediateDirectories: false)

```



Intermediate directories are created by default.



##### New Symlinks



A symbolic link can be created by calling `createSymlinkToPath(_:)` on an `Path`.



```swift

try Path("path/to/MyApp.app").symlinkFile(to: "~/Applications")

print(Path("~/Applications/MyApp.app").exists)  // true

```



##### Finding Paths



You can find all paths with the ".txt" extension five folders deep into the

Desktop with:



```swift

let textFiles = Path.userDesktop.find(searchDepth: 5) { path in

    path.pathExtension == "txt"

}

```



A negative `searchDepth` will make it run until every path in `self` is checked

against.



You can even map a function to paths found and get the non-nil results:



```swift

let documents = Path.userDocuments.find(searchDepth: 1) { path in

    String(path)

}

```



##### Iterating Through Paths



Because `Path` conforms to `SequenceType`, it can be iterated through with a

`for` loop.



```swift

for download in Path.userDownloads {

    print("Downloaded file: \(download)")

}

```



##### Current Working Directory



The current working directory for the process can be changed with `Path.Current`.



To quickly change the current working directory to a path and back, there's the

`changeDirectory(_:)` method:



```swift

Path.userDesktop.changeDirectory {

    print(Path.current)  // "/Users/nvzqz/Desktop"

}

```



##### Common Ancestor



A common ancestor between two paths can be obtained:



```swift

print(Path.root.commonAncestor(.userHome))       // "/"

print("~/Desktop"  <^> "~/Downloads")            // "~"

print(.UserLibrary <^> .UserApplicationSupport)  // "/Users/nvzqz/Library"

```



##### `+` Operator



Appends two paths and returns the result



```swift

// ~/Documents/My Essay.docx

let essay = Path.userDocuments + "My Essay.docx"

```



It can also be used to concatenate a string and a path, making the string value

a `Path` beforehand.



```swift

let numberedFile: Path = "path/to/dir" + String(10)  // "path/to/dir/10"

```



##### `+=` Operator



Appends the right path to the left path. Also works with a `String`.



```swift

var photos = Path.userPictures + "My Photos"  // ~/Pictures/My Photos

photos += "../My Other Photos"                // ~/Pictures/My Photos/../My Other Photos

```



##### `%` Operator



Returns the standardized version of the path.



```swift

let path: Path = "~/Desktop"

path% == path.standardized  // true

```



##### `*` Operator



Returns the resolved version of the path.



```swift

let path: Path = "~/Documents"

path* == path.resolved  // true

```



##### `^` Operator



Returns the path's parent path.



```swift

let path: Path = "~/Movies"

path^ == "~"  // true

```



##### `->>` Operator



Moves the file at the left path to the right path.



`Path` counterpart: **`moveFile(to:)`**



`File` counterpart: **`move(to:)`**



##### `->!` Operator



Forcibly moves the file at the left path to the right path by deleting anything

at the left path before moving the file.



##### `+>>` Operator



Copies the file at the left path to the right path.



`Path` counterpart: **`copyFile(to:)`**



`File` counterpart: **`copy(to:)`**



##### `+>!` Operator



Forcibly copies the file at the left path to the right path by deleting anything

at the left path before copying the file.



##### `=>>` Operator



Creates a symlink of the left path at the right path.



`Path` counterpart: **`symlinkFile(to:)`**



`File` counterpart: **`symlink(to:)`**



##### `=>!` Operator



Forcibly creates a symlink of the left path at the right path by deleting

anything at the left path before creating the symlink.



##### Subscripting



Subscripting an `Path` will return all of its components up to and including

the index.



```swift

let users = Path("/Users/me/Desktop")[1]  // /Users

```



##### `standardize()`



Standardizes the path.



The same as doing:

```swift

somePath = somePath.standardized

```



##### `resolve()`



Resolves the path's symlinks.



The same as doing:

```swift

somePath = somePath.resolved

```



### Files



A file can be made using `File` with a `DataType` for its data type.



```swift

let plistFile = File(path: Path.userDesktop + "sample.plist")

```



Files can be compared by size.



#### Operators



##### `|>` Operator



Writes the data on the left to the file on the right.



```swift

do {

    try "My name is Bob." |> TextFile(path: Path.userDesktop + "name.txt")

} catch {

    print("I can't write to a desktop file?!")

}

```



#### TextFile



The `TextFile` class allows for reading and writing strings to a file.



Although it is a subclass of `File`, `TextFile` offers some functionality

that `File` doesn't.



##### `|>>` Operator



Appends the string on the left to the `TextFile` on the right.



```swift

let readme = TextFile(path: "README.txt")

try "My Awesome Project" |> readme

try "This is an awesome project." |>> readme

```



#### NSDictionaryFile



A typealias to `File`.



#### NSArrayFile



A typealias to `File`



#### NSDataFile



A typealias to `File`



#### DataFile



The `DataFile` class allows for reading and writing `Data` to a file.



Although it is a subclass of `File`, `DataFile` offers some functionality

that `File` doesn't. You could specify `Data.ReadingOptions` and `Data.WritingOptions`



#### Encodable/Decodable



You can use any `Codable` object with `File`.



```swift

extension AnyCodableClass: JSONReadableWritable {} // if you want json encoding/decoding



let codableFile = File(path: path)

try codableFile.write(toEncode)

let decoded: AnyCodableClass = try codableFile.read()

```



Alternatively you can use utility methods



```swift

try FileKit.write(toEncode, to: path)

let decoded: AnyCodableClass = try FileKit.read(from: path)

```



### File Permissions



The `FilePermissions` struct allows for seeing the permissions of the current

process for a given file.



```swift

let swift: Path = "/usr/bin/swift"

print(swift.filePermissions)  // FilePermissions[read, execute]

```



### Data Types



All types that conform to `DataType` can be used to satisfy the generic type for

`File`.



#### Readable Protocol



A `Readable` type must implement the static method `read(from: Path)`.



All `Readable` types can be initialized with `init(contentsOfPath:)`.



#### Writable Protocol



A `Writable` type must implement `write(to: Path, atomically: Bool)`.



Writing done by `write(to: Path)` is done atomically by default.



##### WritableToFile



Types that have a `write(toFile:atomically:)` method that takes in a `String`

for the file path can conform to `Writable` by simply conforming to

`WritableToFile`.



##### WritableConvertible



If a type itself cannot be written to a file but can output a writable type,

then it can conform to `WritableConvertible` and become a `Writable` that way.



### FileKitError



The type for all errors thrown by FileKit operations is `FileKitError`.



Errors can be converted to `String` directly for any logging. If only the error

message is needed, `FileKitError` has a `message` property that states why the

error occurred.



```swift

// FileKitError(Could not copy file from "path/to/file" to "path/to/destination")

String(FileKitError.copyFileFail(from: "path/to/file", to: "path/to/destination"))

```



## License



FileKit and its assets are released under the [MIT License](LICENSE.md). Assets

can be found in the [`assets`](https://github.com/nvzqz/FileKit/tree/assets)

branch.