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TOC: extract h1/h2/h3, indent sub-levels in charte/licence sidebar

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Pontoporeia
2026-07-10 14:16:05 +02:00
parent 485324368f
commit c513ad2545
5 changed files with 16 additions and 7 deletions
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app/src/MarkdownHelper.php
+6 -5
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@@ -6,12 +6,12 @@
class MarkdownHelper
{
/**
* Extract h1 headings from raw markdown content as TOC items.
* Extract h1–h3 headings from raw markdown content as TOC items.
*
* Each heading gets an anchor id matching CommonMark's default slugification
* (lowercase, spaces → hyphens, punctuation stripped).
*
* @return array<int, array{label: string, href: string}>
* @return array<int, array{label: string, href: string, level: int}>
*/
public static function extractToc(string $content): array
{
@@ -22,10 +22,11 @@ class MarkdownHelper
$normalizer = new \League\CommonMark\Normalizer\SlugNormalizer();
foreach ($lines as $line) {
if (preg_match('/^#\s+(.+)$/', $line, $m)) {
$label = trim($m[1]);
if (preg_match('/^(#{1,3})\s+(.+)$/', $line, $m)) {
$level = strlen($m[1]);
$label = trim($m[2]);
$id = $normalizer->normalize($label);
$items[] = ['label' => $label, 'href' => '#' . $id];
$items[] = ['label' => $label, 'href' => '#' . $id, 'level' => $level];
}
}
return $items;