Useful Sting Extensions

UsefulStringExtensions.swift

//Useful String Extension
//By Mudasir Syed
extension String {
	
	
    // Extension for string length of String
	var length: Int {
		return self.count
	}


	// Extension for Subscripting till Specific index 
	subscript (i: Int) -> String {
		return self[i ..< i + 1]
	}

    // Extension for HTML to Attribute String
	var htmlToAttributedString: NSAttributedString? {
		guard let data = data(using: .utf8) else { return NSAttributedString() }
		do {
			return try NSAttributedString(data: data, options: [NSAttributedString.DocumentReadingOptionKey.documentType:  NSAttributedString.DocumentType.html], documentAttributes: nil)
		} catch {
			return NSAttributedString()
		}
	}
	//OR
	
	var htmlToAttributedString : NSAttributedString? {
		do {
			return try NSAttributedString(data: Data(utf8),
										  options: [.documentType: NSAttributedString.DocumentType.html,
													.characterEncoding: String.Encoding.utf8.rawValue],
										  documentAttributes: nil)
		} catch {
			print("error: ", error)
			return nil
		}
	}
	
	
	// Extension for HTML to String
	var htmlToString: String {
		return htmlToAttributedString?.string ?? ""
	}
	//OR
	var htmlToString: String {
		return html2AttributedString?.string ?? ""
	}

	// Extension for compare string.
	func isEqualToString(find: String) -> Bool {
		return String(format: self) == find
	}

    // Extension for Base64 encoding a string
	func base64Encoded() -> String? {
		if let data = self.data(using: .utf8) {
			return data.base64EncodedString()
		}
		return nil
	}

	// Extension for Base64 decoding a string
	func base64Decoded() -> String? {
		if let data = Data(base64Encoded: self) {
			return String(data: data, encoding: .utf8)
		}
		return nil
	}

    // Extension for Replace Arabic Digit To English Digit
	var replacedArabicDigitsWithEnglish: String {
		var str = self
		let map = ["٠": "0",
				   "١": "1",
				   "٢": "2",
				   "٣": "3",
				   "٤": "4",
				   "٥": "5",
				   "٦": "6",
				   "٧": "7",
				   "٨": "8",
				   "٩": "9"]
		map.forEach { str = str.replacingOccurrences(of: $0, with: $1) }
		return str
	}
	
	// Extension for Replace - Dash For Empty String
	func setDashForEmpry() -> String{
		if self == "" {
			return "-"
		}
		return self
	}

    // Extension for String Width
	func widthOfString(usingFont font: UIFont) -> CGFloat {
		   let fontAttributes = [NSAttributedString.Key.font: font]
		   let size = self.size(withAttributes: fontAttributes)
		   return size.width
	}

}