refac: sources and citations

src/lib/utils/marked/citation-extension.ts

@@ -0,0 +1,55 @@
+export function citationExtension() {
+	return {
+		name: 'citation',
+		level: 'inline' as const,
+
+		start(src: string) {
+			// Trigger on any [number]
+			return src.search(/\[(\d[\d,\s]*)\]/);
+		},
+
+		tokenizer(src: string) {
+			// Avoid matching footnotes
+			if (/^\[\^/.test(src)) return;
+
+			// Match ONE OR MORE adjacent [1] or [1,2] blocks
+			// Example matched: "[1][2,3][4]"
+			const rule = /^(\[(?:\d[\d,\s]*)\])+/;
+			const match = rule.exec(src);
+			if (!match) return;
+
+			const raw = match[0];
+
+			// Extract ALL bracket groups inside the big match
+			const groupRegex = /\[([\d,\s]+)\]/g;
+			const ids: number[] = [];
+			let m: RegExpExecArray | null;
+
+			while ((m = groupRegex.exec(raw))) {
+				const parsed = m[1]
+					.split(',')
+					.map((n) => parseInt(n.trim(), 10))
+					.filter((n) => !isNaN(n));
+
+				ids.push(...parsed);
+			}
+
+			return {
+				type: 'citation',
+				raw,
+				ids // merged list
+			};
+		},
+
+		renderer(token: any) {
+			// e.g. "1,2,3"
+			return token.ids.join(',');
+		}
+	};
+}
+
+export default function () {
+	return {
+		extensions: [citationExtension()]
+	};
+}

src/lib/utils/marked/footnote-extension.ts

@@ -0,0 +1,38 @@
+// footnote-extension.ts
+// Simple extension for marked to support footnote references like [^1], [^note]
+
+function escapeHtml(s: string) {
+	return s.replace(
+		/[&<>"']/g,
+		(c) => ({ '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;' })[c]!
+	);
+}
+
+export function footnoteExtension() {
+	return {
+		name: 'footnote',
+		level: 'inline' as const,
+		start(src: string) {
+			return src.search(/\[\^\s*[a-zA-Z0-9_-]+\s*\]/);
+		},
+		tokenizer(src: string) {
+			const rule = /^\[\^\s*([a-zA-Z0-9_-]+)\s*\]/;
+			const match = rule.exec(src);
+			if (match) {
+				const escapedText = escapeHtml(match[1]);
+				return {
+					type: 'footnote',
+					raw: match[0],
+					text: match[1],
+					escapedText: escapedText
+				};
+			}
+		}
+	};
+}
+
+export default function () {
+	return {
+		extensions: [footnoteExtension()]
+	};
+}