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import Foundation
import SwiftUI
enum Endianness {
case big
case little
}
extension String {
func convertToAttributedStringWithLinks() -> AttributedString {
let attributedString: NSMutableAttributedString = NSMutableAttributedString(string: self)
let matches = self.ranges(of: RegularExpressions.relaxedLink)
for match in matches {
let matchString = String(self[match])
if matchString.isEmailAddress() {
attributedString.addAttribute(.link, value: "mailto:\(matchString)", range: NSRange(match, in: self))
}
else {
attributedString.addAttribute(.link, value: matchString, range: NSRange(match, in: self))
}
// attributedString.addAttribute(.underlineStyle, value: 1, range: NSRange(match, in: self))
}
return AttributedString(attributedString)
}
func isEmailAddress() -> Bool {
self.wholeMatch(of: RegularExpressions.emailAddress) != nil
}
func isWebURL() -> Bool {
guard let url = URL(string: self) else {
return false
}
switch url.scheme?.lowercased() {
case "http", "https":
return true
default:
return false
}
}
func isImageURL() -> Bool {
guard let url = URL(string: self) else {
return false
}
switch url.pathExtension.lowercased() {
case "jpg", "jpeg", "png", "gif":
return true
default:
return false
}
}
func convertingLinksToMarkdown() -> String {
var cp = String(self)
cp.replace(RegularExpressions.relaxedLink) { match -> String in
let linkText = self[match.range]
var injectedScheme = "https://"
if let _ = try? RegularExpressions.supportedLinkScheme.prefixMatch(in: linkText) {
injectedScheme = ""
}
return "[\(linkText)](\(injectedScheme)\(linkText))"
}
return cp
}
}
extension Binding where Value: OptionSet, Value == Value.Element {
func bindedValue(_ options: Value) -> Bool {
return wrappedValue.contains(options)
}
func bind(_ options: Value) -> Binding<Bool> {
return .init { () -> Bool in
self.wrappedValue.contains(options)
} set: { newValue in
if newValue {
self.wrappedValue.insert(options)
} else {
self.wrappedValue.remove(options)
}
}
}
}
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