如何在 Swift 中将 .txt 文件拆分为多维数组或字典？

Question

我需要以这种格式解析的 txt 文件的正文：

Name: LittleX
Package: com.ioscreatix.littlex
Description: iPhone X features for Non-X devices on iOS 11, and iPad Dock and PiP for All iOS 11 Devices on iOS 11

Name: InteliX
Package: com.ioscreatix.intelix
Description: Grouped Notifications for iOS 11

我希望我的数组将每个包分别放在一个数组中，该数组按它们的名称值列出，并带有一个用于描述和包的字典。我将如何做到这一点？

这是我目前的代码：

var unfilteredPackagesArray = [String]()
    var secondFilteredPackagesArray = [String]()
    var finalFilteredPackagesArray = [String]()

if let startWordsURL = Bundle.main.url(forResource: "Packages", withExtension: "") {
            if let startWords = try? String(contentsOf: startWordsURL) {
                unfilteredPackagesArray = startWords.components(separatedBy: "\n\n")

                print(unfilteredPackagesArray)
                secondFilteredPackagesArray = startWords.components(separatedBy: "\n")


                finalFilteredPackagesArray = startWords.components(separatedBy: ":")

                print(secondFilteredPackagesArray)

最好的方法是什么？创建 Package 对象并创建一个数组？

Answer 1

是的，继续！

是的，我认为你应该创建一个Package 结构，然后生成一个array of Package(s)。

这是代码。

1。定义包结构?

struct Package {
    let name: String
    let package: String
    let description: String
}

2。加载文件?

guard
    let url = Bundle.main.url(forResource: "Packages", withExtension: "txt"),
    let content = try? String(contentsOf: url)
else { fatalError() }

3。提取线条?

let lines = content
    .components(separatedBy: CharacterSet.newlines)
    .filter { !$0.isEmpty }
    .compactMap { $0.components(separatedBy: ": ").last }

4。提取 3 个数组?

let nameLines = lines.enumerated().filter { $0.offset % 3 == 0 }.map { $0.element }
let packageLines = lines.enumerated().filter { $0.offset % 3 == 1 }.map { $0.element }
let descriptionLines = lines.enumerated().filter { $0.offset % 3 == 2 }.map { $0.element }

5。生成一个包数组???

let packages = zip(nameLines, zip(packageLines, descriptionLines))
    .map { (name: $0, package: $1.0, description: $1.1) }
    .map (Package.init)

6。测试?

print(packages)

[
    Package(name: "LittleX",
            package: "com.ioscreatix.littlex",
            description: "iPhone X features for Non-X devices on iOS 11, and iPad Dock and PiP for All iOS 11 Devices on iOS 11"
    ),
    Package(name: "InteliX",
            package: "com.ioscreatix.intelix",
            description: "Grouped Notifications for iOS 11"
    )
]