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(GLI-3964) Able to bold and italicize the same word when editing a no…
…te. (#3)
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| 4.0 |
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@@ -13,11 +13,11 @@ Pod::Spec.new do |s| | |
| s.license = "MIT" | ||
| s.authors = { "Tobias Sundstrand" => "[email protected]", "Antoine Cœur" => "" } | ||
| s.social_media_url = "https://twitter.com/laptobbe" | ||
| s.ios.deployment_target = "6.0" | ||
| s.tvos.deployment_target = "9.0" | ||
| s.osx.deployment_target = "10.7" | ||
| s.ios.deployment_target = "8.0" | ||
| s.tvos.deployment_target = "10.0" | ||
| s.osx.deployment_target = "10.9" | ||
| s.source = { :git => "https://github.com/laptobbe/TSMarkdownParser.git", :tag => s.version.to_s } | ||
| s.source_files = "TSMarkdownParser/**/*.{h,m}" | ||
| s.source_files = "TSMarkdownParser/**/*.{h,m,swift}" | ||
| s.requires_arc = true | ||
| s.ios.framework = 'UIKit' | ||
| s.tvos.framework = 'UIKit' | ||
|
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| // | ||
| // NSAttributedString+Markdown.swift | ||
| // TSMarkdownParserLib | ||
| // | ||
| // Created by Stephan Heilner on 10/30/17. | ||
| // Copyright © 2017 Computertalk Sweden. All rights reserved. | ||
| // | ||
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| #if !os(OSX) | ||
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| import UIKit | ||
| import Foundation | ||
|
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| public extension NSAttributedString { | ||
|
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| public func markdownString() -> String { | ||
| let bulletCharacter = Character("\u{2022}") | ||
| let nonBreakingSpaceCharacter = Character("\u{00A0}") | ||
|
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| var markdownString = "" | ||
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| enum FormattingChange { | ||
| case enable | ||
| case disable | ||
| case keep | ||
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| static func getFormattingChange(_ before: Bool, after: Bool) -> FormattingChange { | ||
| if !before && after { return .enable } | ||
| if before && !after { return .disable } | ||
| return .keep | ||
| } | ||
| } | ||
|
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| var stringHasBoldEnabled = false | ||
| var stringHasItalicEnabled = false | ||
| var closingString = "" | ||
| var characterOnBulletedListLine = false | ||
| var openedNumberedListStarter = false | ||
| var characterOnNumberedListLine = false | ||
| var numberedListIsFirstLine = false | ||
| var previousCharacter: Character? | ||
|
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| enumerateAttributes(in: NSRange(location: 0, length: length), options: []) { attributes, range, shouldStop in | ||
| if let traits = (attributes[NSAttributedStringKey.font] as? UIFont)?.fontDescriptor.symbolicTraits { | ||
| let boldChange = FormattingChange.getFormattingChange(stringHasBoldEnabled, after: traits.contains(.traitBold)) | ||
| let italicChange = FormattingChange.getFormattingChange(stringHasItalicEnabled, after: traits.contains(.traitItalic)) | ||
| var formatString = "" | ||
| switch boldChange { | ||
| case .enable: | ||
| formatString += "**" | ||
| closingString = "**\(closingString)" | ||
| case .disable: | ||
| if stringHasItalicEnabled && italicChange == .keep { | ||
| formatString += "_**_" | ||
| closingString = "_" | ||
| } else { | ||
| formatString += "**" | ||
| closingString = "" | ||
| } | ||
| case .keep: | ||
| break | ||
| } | ||
|
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| switch italicChange { | ||
| case .enable: | ||
| formatString += "_" | ||
| closingString = "_\(closingString)" | ||
| case .disable: | ||
| if stringHasBoldEnabled && boldChange == .keep { | ||
| formatString = "**_**\(formatString)" | ||
| closingString = "**" | ||
| } else { | ||
| formatString = "_\(formatString)" | ||
| closingString = "" | ||
| } | ||
| case .keep: | ||
| break | ||
| } | ||
|
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| markdownString += formatString | ||
|
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| stringHasBoldEnabled = traits.contains(.traitBold) | ||
| stringHasItalicEnabled = traits.contains(.traitItalic) | ||
| } | ||
|
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| let preprocessedString = (self.string as NSString).substring(with: range) | ||
| let processedString = preprocessedString.characters.reduce("") { resultString, character in | ||
| var stringToAppend = "" | ||
|
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| switch character { | ||
| case "\\", "`", "*", "_", "{", "}", "[", "]", "(", ")", "#", "+", "-", "!": | ||
| stringToAppend = "\\\(character)" | ||
| case "\n", "\u{2028}": | ||
| stringToAppend = "\(closingString)\(character)" | ||
| if !characterOnBulletedListLine && !characterOnNumberedListLine { | ||
| stringToAppend += String(closingString.characters.reversed()) | ||
| } | ||
|
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| characterOnBulletedListLine = false | ||
| characterOnNumberedListLine = false | ||
| case "1", "2", "3", "4", "5", "6", "7", "8", "9", "0": | ||
| if previousCharacter == "\n" || previousCharacter == nil || previousCharacter == nonBreakingSpaceCharacter { | ||
| openedNumberedListStarter = true | ||
| } | ||
|
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| numberedListIsFirstLine = previousCharacter == nil ? true : numberedListIsFirstLine | ||
| stringToAppend = "\(character)" | ||
| case bulletCharacter: | ||
| characterOnBulletedListLine = true | ||
| stringToAppend = "+ \(previousCharacter != nil ? String(closingString.characters.reversed()) : markdownString)" | ||
| markdownString = previousCharacter == nil ? "" : markdownString | ||
| case ".": | ||
| if openedNumberedListStarter { | ||
| openedNumberedListStarter = false | ||
| characterOnNumberedListLine = true | ||
|
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| stringToAppend = "\(character) \(!numberedListIsFirstLine ? String(closingString.characters.reversed()) : markdownString)" | ||
|
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| if numberedListIsFirstLine { | ||
| markdownString = "" | ||
| numberedListIsFirstLine = false | ||
| } | ||
| break | ||
| } | ||
| stringToAppend = "\\\(character)" | ||
| case nonBreakingSpaceCharacter: | ||
| if characterOnBulletedListLine || characterOnNumberedListLine { | ||
| break | ||
| } | ||
| stringToAppend = " " | ||
| default: | ||
| if (previousCharacter == "\n" || previousCharacter == "\u{2028}") && characterOnBulletedListLine { | ||
| characterOnBulletedListLine = false | ||
| stringToAppend = "\(String(closingString.characters.reversed()))\(character)" | ||
| } else { | ||
| stringToAppend = "\(character)" | ||
| } | ||
| } | ||
|
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| previousCharacter = character | ||
| return "\(resultString)\(stringToAppend)" | ||
| } | ||
| markdownString += processedString | ||
| } | ||
| markdownString += closingString | ||
| markdownString = markdownString.replacingOccurrences(of: "**__**", with: "").replacingOccurrences(of: "****", with: "") | ||
| .replacingOccurrences(of: "__", with: "") | ||
| // Help the user because they probably didn't intend to have empty bullets and it will make markdown have a + if we leave them | ||
| markdownString = markdownString.replacingOccurrences(of: "+ \n", with: "") | ||
| if markdownString.hasSuffix("+ ") { | ||
| markdownString = (markdownString as NSString).substring(to: markdownString.characters.count - 2) | ||
| } | ||
|
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| return markdownString | ||
| } | ||
|
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| } | ||
|
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||
| #endif |
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