Инсталирайте Kanna чрез Carthage

// add the following line to your Podfile:
use_frameworks! 
pod 'Kanna', '~> 5.2.2'

// Then run:
$ pod install

Инсталирайте Kanna чрез CocoaPods

// If you prefer Carthage, add this line to your Cartfile:
github "tid-kijyun/Kanna" ~> 5.2.2

Можете също да я инсталирате ръчно; изтеглете последните файлове от последното издание директно от GitHub хранилището.

Как да парсираме HTML, използвайки UTF-8 кодиране, чрез Swift библиотека?

 import Kanna

// A sample HTML string representing a webpage
let htmlString = """

  
    
  
  
    
Добре дошли в Swift Parsing
    
Kanna прави парсирането на HTML лесно и елегантно.
    View on GitHub
  

"""

// Parse the HTML string using UTF-8 encoding
if let doc = try? HTML(html: htmlString, encoding: .utf8) {
    
    // Access the document title directly via a convenience property
    print(doc.title ?? "No title found")
    // Output: My Tech Blog
    
    // Access the full body text
    print(doc.body?.text ?? "No body")
}

Как да изберем множество HTML елементи и да извлечем текста от тях чрез Swift библиотека?

import Kanna

let htmlString = """


  

    

      Swift книга
      $39.99
    
    

      Xcode ръководство
      $24.99
    
    

      iOS Основи
      $49.99
    
  


"""

if let doc = try? HTML(html: htmlString, encoding: .utf8) {
    
    // Select all elements with class "product" inside a "ul"
    for product in doc.css("ul.product-list li.product") {
        
        // Extract text from nested span elements using child selectors
        let name = product.css("span.name").first?.text ?? "Unknown"
        let price = product.css("span.price").first?.text ?? "N/A"
        
        // Access HTML attributes using subscript notation
        let productId = product["data-id"] ?? "No ID"
        
        print("[\(productId)] \(name) — \(price)")
    }
}

Как да извършим XML парсиране в Swift приложения?

import Kanna

let xmlString = """


  
    
    
      
      Alex Johnson
      Mon, 26 Jun 2024 00:00:00 GMT
    
    
      
      Maria Garcia
      Tue, 15 Apr 2024 00:00:00 GMT
    
  

"""

if let doc = try? Kanna.XML(xml: xmlString, encoding: .utf8) {
    
    // Define a namespace mapping: prefix -> URI
    // The prefix you use here ("dc") can be anything; it maps to the namespace URI
    let namespaces = [
        "dc": "http://purl.org/dc/elements/1.1/"
    ]
    
    // Query elements in the "dc" namespace using the prefix
    for item in doc.xpath("//item", namespaces: namespaces) {
        let title = item.at_xpath("title")?.text ?? "No title"
        let creator = item.at_xpath("dc:creator", namespaces: namespaces)?.text ?? "Unknown"
        let pubDate = item.at_xpath("pubDate")?.text ?? "No date"
        
        print("Title: \(title)")
        print("Author: \(creator)")
        print("Published: \(pubDate)\n")
    }
}