struct ImageCompareCommand: CommandProcessor { static let commandType: CommandType = .imageCompare let content: Content let results: PageGenerationResults let language: ContentLanguage init(content: Content, results: PageGenerationResults, language: ContentLanguage) { self.content = content self.results = results self.language = language } func process(_ arguments: [String], markdown: Substring) -> String { guard arguments.count == 2 else { invalid(markdown) return "" } let leftImageId = arguments[0] let rightImageId = arguments[1] guard let leftImage = content.image(leftImageId) else { results.missing(file: leftImageId, source: "Image compare") return "" } guard let rightImage = content.image(rightImageId) else { results.missing(file: rightImageId, source: "Image compare") return "" } let size = content.settings.pages.contentWidth let leftImageSet = leftImage.imageSet( width: size, height: size, language: language, extraAttributes: ImageCompare.extraAttributes) let rightImageSet = rightImage.imageSet( width: size, height: size, language: language, extraAttributes: ImageCompare.extraAttributes) results.require(imageSet: leftImageSet) results.require(imageSet: rightImageSet) results.require(icon: ImageCompare.requiredIcon) results.require(headers: .imageCompareJs, .imageCompareCss) return ImageCompare(left: leftImageSet, right: rightImageSet).content } }