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May 13, 2022 06:18
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Strip HTML tags in Swift
could you update the code in swift 5 please, I have tried but its not working
Replace options with:
let options: [NSAttributedString.DocumentReadingOptionKey : Any] = [
.documentType: NSAttributedString.DocumentType.html,
.characterEncoding: String.Encoding.utf8.rawValue
]
could you update the code in swift 5 please, I have tried but its not working
Replace options with:
let options: [NSAttributedString.DocumentReadingOptionKey : Any] = [
.documentType: NSAttributedString.DocumentType.html,
.characterEncoding: String.Encoding.utf8.rawValue
]
Hi,
Thanks for this help. Is there any specific reason behind doing this with "DispatchQueue" ?
I tried to make the code reusable by putting it inside a class, but then it didn't work.
Below is the code :-
import UIKit
class StringUtilities{
var stringWithoutHTMLTags = "stringWithoutHTMLTags"
func removeHTMLTagsFromString(_ HTMLString: String) -> String {
let htmlStringData = HTMLString.data(using: String.Encoding.utf8)!
let options: [NSAttributedString.DocumentReadingOptionKey : Any] = [
.documentType: NSAttributedString.DocumentType.html,
.characterEncoding: String.Encoding.utf8.rawValue
]
DispatchQueue.global(qos: .userInitiated).async {
// perform in background thread
let attributedString = try! NSAttributedString(data: htmlStringData, options: options, documentAttributes: nil)
DispatchQueue.main.async {
// handle text in main thread
self.stringWithoutHTMLTags = attributedString.string
}
}
return self.stringWithoutHTMLTags
}
}
let htmlString = "LCD Soundsystem was the musical project of producer <a href='http://www.last.fm/music/James+Murphy' class='bbcode_artist'>James Murphy</a>, co-founder of <a href='http://www.last.fm/tag/dance-punk' class='bbcode_tag' rel='tag'>dance-punk</a> label <a href='http://www.last.fm/label/DFA' class='bbcode_label'>DFA</a> Records. Formed in 2001 in New York City, New York, United States, the music of LCD Soundsystem can also be described as a mix of <a href='http://www.last.fm/tag/alternative%20dance' class='bbcode_tag' rel='tag'>alternative dance</a> and <a href='http://www.last.fm/tag/post%20punk' class='bbcode_tag' rel='tag'>post punk</a>, along with elements of <a href='http://www.last.fm/tag/disco' class='bbcode_tag' rel='tag'>disco</a> and other styles. <br />"
let strObj = StringUtilities()
var newStr = strObj.removeHTMLTagsFromString(htmlString)
print("Output : \(newStr)")
The Expected output was complete string without html tags, but it printed the initial value assigned to the class property.
However when I tried below code, it worked!!!
import UIKit
class StringUtilities{
var stringWithoutHTMLTags = "stringWithoutHTMLTags"
func removeHTMLTagsFromString(_ HTMLString: String) -> String {
let htmlStringData = HTMLString.data(using: String.Encoding.utf8)!
let options: [NSAttributedString.DocumentReadingOptionKey : Any] = [
.documentType: NSAttributedString.DocumentType.html,
.characterEncoding: String.Encoding.utf8.rawValue
]
let attributedString = try! NSAttributedString(data: htmlStringData, options: options, documentAttributes: nil)
self.stringWithoutHTMLTags = attributedString.string
return self.stringWithoutHTMLTags
}
}
let htmlString = "LCD Soundsystem was the musical project of producer <a href='http://www.last.fm/music/James+Murphy' class='bbcode_artist'>James Murphy</a>, co-founder of <a href='http://www.last.fm/tag/dance-punk' class='bbcode_tag' rel='tag'>dance-punk</a> label <a href='http://www.last.fm/label/DFA' class='bbcode_label'>DFA</a> Records. Formed in 2001 in New York City, New York, United States, the music of LCD Soundsystem can also be described as a mix of <a href='http://www.last.fm/tag/alternative%20dance' class='bbcode_tag' rel='tag'>alternative dance</a> and <a href='http://www.last.fm/tag/post%20punk' class='bbcode_tag' rel='tag'>post punk</a>, along with elements of <a href='http://www.last.fm/tag/disco' class='bbcode_tag' rel='tag'>disco</a> and other styles. <br />"
let strObj = StringUtilities()
var newStr = strObj.removeHTMLTagsFromString(htmlString)
print("Output : \(newStr)")
extension String {
public func trimHTMLTags() -> String? {
guard let htmlStringData = self.data(using: String.Encoding.utf8) else {
return nil
}
let options: [NSAttributedString.DocumentReadingOptionKey : Any] = [
.documentType: NSAttributedString.DocumentType.html,
.characterEncoding: String.Encoding.utf8.rawValue
]
let attributedString = try? NSAttributedString(data: htmlStringData, options: options, documentAttributes: nil)
return attributedString?.string
}
}
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could you update the code in swift 5 please, I have tried but its not working