build method

Implementation

@override
Future<void> build(BuildStep buildStep) async {
  try {
    // Only process the trigger file
    final inputId = buildStep.inputId;
    if (!inputId.path.endsWith('iconfont.dart')) {
      return;
    }

    // Read pubspec.yaml to get iconfont configuration
    final pubspecContent = await File('pubspec.yaml').readAsString();
    final pubspec = loadYaml(pubspecContent) as Map;

    final iconfontConfig = pubspec['iconfont'] as Map?;
    if (iconfontConfig == null) {
      log.warning('No iconfont configuration found in pubspec.yaml');
      return;
    }

    final config =
        IconFontConfig.fromMap(Map<String, dynamic>.from(iconfontConfig));

    if (config.symbolUrl.isEmpty ||
        config.symbolUrl.contains('请参考README.md')) {
      log.warning('Please configure a valid symbol_url in pubspec.yaml');
      return;
    }

    log.info('Fetching icons from: ${config.symbolUrl}');

    // Fetch SVG content
    final svgContent =
        await IconFontFetcher.fetchSvgContent(config.symbolUrl);

    // Parse symbols
    final symbols = SvgParser.parseSymbols(svgContent);

    if (symbols.isEmpty) {
      log.warning('No icons found in the SVG content');
      return;
    }

    log.info('Found ${symbols.length} icons');

    // Generate code content
    final generatedCode = _generateIconFontCode(symbols, config);

    // Write to output using BuildStep
    final outputId = inputId.changeExtension('.g.dart');
    await buildStep.writeAsString(outputId, generatedCode);

    log.info('Successfully generated iconfont code to ${outputId.path}');
  } catch (e, stackTrace) {
    log.severe('Error generating iconfont: $e', e, stackTrace);
    rethrow;
  }
}