39 lines
1.1 KiB
Swift
39 lines
1.1 KiB
Swift
import Ink
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struct MarkdownHeadlineProcessor: MarkdownProcessor {
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static let modifier: Modifier.Target = .headings
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let content: Content
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let results: PageGenerationResults
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let language: ContentLanguage
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init(content: Content, results: PageGenerationResults, language: ContentLanguage) {
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self.content = content
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self.results = results
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self.language = language
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}
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/**
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Modify headlines by extracting an id from the headline and adding it into the html element
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Format: ##<title>#<id>
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The id is created by lowercasing the string, removing all special characters, and replacing spaces with scores
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*/
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func process(html: String, markdown: Substring) -> String {
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let id = markdown
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.last(after: "#")
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.trimmed
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.filter { $0.isNumber || $0.isLetter || $0 == " " }
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.lowercased()
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.components(separatedBy: " ")
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.filter { $0 != "" }
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.joined(separator: "-")
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let parts = html.components(separatedBy: ">")
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return parts[0] + " id=\"\(id)\">" + parts.dropFirst().joined(separator: ">")
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}
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}
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