run method

@override Future<ProcessData> run(ProcessData data)

Implementation

@override
Future<ProcessData> run(ProcessData data) async {
  final replacements = <Replacement>[];

  final matches = _mermaidBlockRegex.allMatches(data.content);

  if (matches.isEmpty) return data;

  for (final Match match in matches) {
    final mermaidSyntax = match.group(1);

    if (mermaidSyntax == null) continue;

    // Process the mermaid syntax to generate an image file
    final asset = await generateAndSaveMermaidImage(mermaidSyntax);

    if (asset == null) continue;

    final markdown = '![Mermaid Diagram](${asset.relativePath})';

    // Collect replacement information
    replacements.add((
      start: match.start,
      end: match.end,
      markdown: markdown,
    ));
  }

  var content = data.content;

  // Apply replacements in reverse order
  for (var replacement in replacements.reversed) {
    final (:start, :end, :markdown) = replacement;

    content = content.replaceRange(start, end, markdown);
  }

  return (
    content: content,
    options: data.options,
    config: data.config,
  );
}