format method

String format(List<Violation> violations)

Formats violations into a grouped string representation.

Returns an empty string if there are no violations.

Implementation

String format(List<Violation> violations) {
  if (violations.isEmpty) {
    return '';
  }

  final grouped = <String, List<Violation>>{};
  for (final v in violations) {
    grouped.putIfAbsent(v.filePath, () => []).add(v);
  }

  final buffer = StringBuffer();
  final filePaths = grouped.keys.toList()..sort();

  for (final filePath in filePaths) {
    buffer.writeln(filePath);
    for (final v in grouped[filePath]!) {
      buffer.write('  \u2717 ${_ruleTypeLabel(v.ruleType)}');
      if (v.ruleName != null) {
        buffer.write(': "${v.ruleName}"');
      }
      buffer.writeln();
      final importLine = '    \u2022 ${v.lineNumber}: '
          "import '${v.importUri}';";
      buffer.writeln(importLine);
    }
    buffer.writeln();
  }

  final fileCount = grouped.length;
  final errorCount = violations.length;
  final summary = '\u2717 Verification failed: $errorCount errors '
      'in $fileCount files $_eagleEmoji';
  buffer.write(summary);

  return buffer.toString();
}