getModifiedDartFiles method

Future<List<String>> getModifiedDartFiles(String baseCommit, { List<String> targetPaths = const [], })

Finds Dart files modified between baseCommit and HEAD.

Implementation

Future<List<String>> getModifiedDartFiles(
  String baseCommit, {
  List<String> targetPaths = const [],
}) async {
  final repoRoot = await getRepoRoot();
  final args = ['diff', '--name-only', '--diff-filter=ACMR', baseCommit];

  final res = await _runGit(args);
  if (res.exitCode != 0) {
    throw ArgumentError(
      'Git diff failed against base commit "$baseCommit": '
      '${(res.stderr as String).trim()}',
    );
  }

  final output = (res.stdout as String).trim();
  if (output.isEmpty) {
    return [];
  }

  final baseDir = workingDirectory ?? Directory.current.path;
  final resolvedTargets = [
    for (final t in targetPaths) ...[
      p.normalize(p.join(baseDir, t)),
      p.normalize(p.join(repoRoot, t)),
    ],
  ];
  final allChanged = output.split('\n').map((l) => l.trim()).toList();
  final results = <String>[];

  for (final relPath in allChanged) {
    if (relPath.isEmpty ||
        p.extension(relPath) != '.dart' ||
        isExcludedPath(relPath)) {
      continue;
    }

    final absPath = p.normalize(p.join(repoRoot, relPath));
    if (resolvedTargets.isNotEmpty &&
        !resolvedTargets.any(
          (t) => p.isWithin(t, absPath) || p.equals(t, absPath),
        )) {
      continue;
    }

    results.add(relPath);
  }

  return results;
}