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kean
56 lines
1.6 KiB
Swift
56 lines
1.6 KiB
Swift
// The MIT License (MIT)
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//
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// Copyright (c) 2020–2022 Alexander Grebenyuk (github.com/kean).
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import Foundation
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#if os(iOS) || os(macOS)
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#if os(macOS)
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import AppKit
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#else
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import UIKit
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#endif
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final class HTMLPrettyPrint {
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private let string: String
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init(string: String) {
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self.string = string
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}
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func render() -> NSAttributedString {
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let text = NSMutableAttributedString(string: string)
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let ps = NSMutableParagraphStyle()
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ps.minimumLineHeight = FontSize.body + 5
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ps.maximumLineHeight = FontSize.body + 5
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text.addAttributes([
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.font: UXFont.monospacedSystemFont(ofSize: CGFloat(FontSize.body), weight: .regular),
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.foregroundColor: UXColor.label,
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.paragraphStyle: ps
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])
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func makeRange(from substring: Substring) -> NSRange {
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NSRange(substring.startIndex..<substring.endIndex, in: string)
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}
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let tagRegex = try! Regex("<[^>]*>")
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let attributesRegex = try! Regex(#"(\w*?)=(\"\w.*?\")"#)
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for match in tagRegex.matches(in: string) {
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let range = makeRange(from: match.fullMatch)
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text.addAttribute(.foregroundColor, value: Palette.pink, range: range)
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for match in attributesRegex.matches(in: string, range: range) {
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if match.groups.count == 2 {
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text.addAttribute(.foregroundColor, value: UXColor.systemOrange, range: makeRange(from: match.groups[0]))
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text.addAttribute(.foregroundColor, value: UXColor.systemRed, range: makeRange(from: match.groups[1]))
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}
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}
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}
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return text
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}
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}
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#endif
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