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/*
This source file is part of the Swift.org open source project
Copyright (c) 2023 Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See https://swift.org/LICENSE.txt for license information
See https://swift.org/CONTRIBUTORS.txt for Swift project authors
*/
import Foundation
struct ANSIAnnotation {
enum Color: UInt8 {
case normal = 0
case red = 31
case green = 32
case yellow = 33
case `default` = 39
}
enum Trait: UInt8 {
case normal = 0
case bold = 1
case italic = 3
}
private var color: Color
private var trait: Trait
/// The textual representation of the annotation.
private var code: String {
"\u{001B}[\(trait.rawValue);\(color.rawValue)m"
}
init(color: Color, trait: Trait = .normal) {
self.color = color
self.trait = trait
}
func applied(to message: some StringProtocol) -> String {
guard !message.isEmpty else {
return ""
}
return "\(code)\(message)\(ANSIAnnotation.normal.code)"
}
static var normal: ANSIAnnotation {
self.init(color: .normal, trait: .normal)
}
/// Annotation used for highlighting source text.
static var sourceHighlight: ANSIAnnotation {
ANSIAnnotation(color: .green, trait: .bold)
}
/// Annotation used for highlighting source suggestion.
static var sourceSuggestionHighlight: ANSIAnnotation {
ANSIAnnotation(color: .default, trait: .bold)
}
}
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