| 1 | import { renderSafeMarkdown } from "/js/safe-markdown.js"; |
| 2 | |
| 3 | const FOOTNOTE_DEF_RE = /^\[\^([^\]]+)\]:\s*(.*)$/; |
| 4 | |
| 5 | export function renderEditorPreviewMarkdown(markdown = "", fullMarkdown = markdown) { |
| 6 | return renderSafeMarkdown(prepareFootnotes(markdown, fullMarkdown), { |
| 7 | allowDataImages: true, |
| 8 | allowLatex: true, |
| 9 | openExternalLinksInNewTab: true, |
| 10 | }); |
| 11 | } |
| 12 | |
| 13 | export function buildMarkdownPages(markdown = "", fallbackTitle = "Markdown") { |
| 14 | const source = String(markdown || ""); |
| 15 | return [{ |
| 16 | index: 0, |
| 17 | title: fallbackTitle, |
| 18 | level: 0, |
| 19 | anchor: slugifyHeading(fallbackTitle), |
| 20 | start: 0, |
| 21 | end: source.length, |
| 22 | markdown: source, |
| 23 | }]; |
| 24 | } |
| 25 | |
| 26 | export function slugifyHeading(text = "", used = new Map()) { |
| 27 | const base = String(text || "") |
| 28 | .toLowerCase() |
| 29 | .replace(/<[^>]+>/g, "") |
| 30 | .replace(/[`*_~[\]()]/g, "") |
| 31 | .replace(/&[a-z0-9#]+;/gi, "") |
| 32 | .replace(/[^a-z0-9\s-]/g, "") |
| 33 | .trim() |
| 34 | .replace(/\s+/g, "-") |
| 35 | .replace(/-+/g, "-") || "section"; |
| 36 | const count = used.get(base) || 0; |
| 37 | used.set(base, count + 1); |
| 38 | return count ? `${base}-${count + 1}` : base; |
| 39 | } |
| 40 | |
| 41 | export function resolveDocumentRelativePath(documentPath = "", target = "") { |
| 42 | const value = String(target || "").trim(); |
| 43 | if (!value) return ""; |
| 44 | if (value.startsWith("/")) return normalizePath(value); |
| 45 | const base = parentPath(documentPath); |
| 46 | return normalizePath(`${base}/${value}`); |
| 47 | } |
| 48 | |
| 49 | export function splitHref(href = "") { |
| 50 | const value = String(href || "").trim(); |
| 51 | const hashIndex = value.indexOf("#"); |
| 52 | if (hashIndex < 0) return { path: value, fragment: "" }; |
| 53 | return { |
| 54 | path: value.slice(0, hashIndex), |
| 55 | fragment: decodeURIComponent(value.slice(hashIndex + 1) || ""), |
| 56 | }; |
| 57 | } |
| 58 | |
| 59 | export function isExternalHref(href = "") { |
| 60 | const value = String(href || "").trim(); |
| 61 | return /^[a-zA-Z][a-zA-Z\d+.-]*:/.test(value) || value.startsWith("//"); |
| 62 | } |
| 63 | |
| 64 | export function isMarkdownPath(path = "") { |
| 65 | return /\.md(?:own)?$/i.test(String(path || "").split(/[?#]/, 1)[0]); |
| 66 | } |
| 67 | |
| 68 | function prepareFootnotes(markdown = "", fullMarkdown = markdown) { |
| 69 | const definitions = []; |
| 70 | const body = []; |
| 71 | for (const line of String(fullMarkdown || "").split("\n")) { |
| 72 | const match = line.match(FOOTNOTE_DEF_RE); |
| 73 | if (match) { |
| 74 | definitions.push({ id: match[1], text: match[2] }); |
| 75 | } |
| 76 | } |
| 77 | for (const line of String(markdown || "").split("\n")) { |
| 78 | if (line.match(FOOTNOTE_DEF_RE)) { |
| 79 | continue; |
| 80 | } |
| 81 | body.push(line); |
| 82 | } |
| 83 | if (!definitions.length) return markdown; |
| 84 | |
| 85 | const counts = new Map(); |
| 86 | let prepared = body.join("\n").replace(/\[\^([^\]]+)\]/g, (_all, id) => { |
| 87 | const number = definitions.findIndex((item) => item.id === id) + 1; |
| 88 | if (number <= 0) return `[^${id}]`; |
| 89 | const count = (counts.get(id) || 0) + 1; |
| 90 | counts.set(id, count); |
| 91 | const safeId = footnoteId(id); |
| 92 | return `<sup class="editor-footnote-ref"><a id="fnref-${safeId}-${count}" href="#fn-${safeId}">${number}</a></sup>`; |
| 93 | }); |
| 94 | |
| 95 | prepared += "\n\n<section class=\"editor-footnotes\" aria-label=\"Footnotes\">\n<ol>\n"; |
| 96 | for (const definition of definitions) { |
| 97 | const safeId = footnoteId(definition.id); |
| 98 | prepared += `<li id="fn-${safeId}">${escapeHtml(definition.text)} <a class="editor-footnote-backref" href="#fnref-${safeId}-1">Back</a></li>\n`; |
| 99 | } |
| 100 | prepared += "</ol>\n</section>"; |
| 101 | return prepared; |
| 102 | } |
| 103 | |
| 104 | function footnoteId(id = "") { |
| 105 | return String(id || "") |
| 106 | .toLowerCase() |
| 107 | .replace(/[^a-z0-9_-]+/g, "-") |
| 108 | .replace(/^-+|-+$/g, "") || "note"; |
| 109 | } |
| 110 | |
| 111 | function parentPath(path = "") { |
| 112 | const normalized = String(path || "").split(/[?#]/, 1)[0].replace(/\/+$/, ""); |
| 113 | const index = normalized.lastIndexOf("/"); |
| 114 | if (index <= 0) return "/"; |
| 115 | return normalized.slice(0, index); |
| 116 | } |
| 117 | |
| 118 | function normalizePath(path = "") { |
| 119 | const absolute = String(path || "").startsWith("/"); |
| 120 | const parts = []; |
| 121 | for (const part of String(path || "").split("/")) { |
| 122 | if (!part || part === ".") continue; |
| 123 | if (part === "..") { |
| 124 | parts.pop(); |
| 125 | continue; |
| 126 | } |
| 127 | parts.push(part); |
| 128 | } |
| 129 | return `${absolute ? "/" : ""}${parts.join("/")}`; |
| 130 | } |
| 131 | |
| 132 | function escapeHtml(value = "") { |
| 133 | return String(value || "") |
| 134 | .replace(/&/g, "&") |
| 135 | .replace(/</g, "<") |
| 136 | .replace(/>/g, ">") |
| 137 | .replace(/"/g, """); |
| 138 | } |