resolveNitroNativePath function

String resolveNitroNativePath(String pluginDir)

Resolves the absolute path to the installed nitro package's src/native directory by reading .dart_tool/package_config.json inside pluginDir.

Implementation

String resolveNitroNativePath(String pluginDir) {
  // Walk up from pluginDir looking for .dart_tool/package_config.json.
  // In Dart workspaces the config lives at the workspace root, not in each
  // member's own directory.
  var searchDir = Directory(pluginDir);
  while (true) {
    final configFile = File(p.join(searchDir.path, '.dart_tool', 'package_config.json'));
    if (configFile.existsSync()) {
      try {
        final packages = switch (jsonDecode(configFile.readAsStringSync())) {
          {'packages': final List<Object?> list} => list,
          _ => const <Object?>[],
        };
        for (final pkg in packages) {
          if (pkg case {'name': 'nitro', 'rootUri': final String rootUri}) {
            // rootUri is a file: URI in some SDKs and relative to .dart_tool
            // in others.
            final root = switch (Uri.parse(rootUri)) {
              final u when u.isScheme('file') => u.toFilePath(),
              _ => p.normalize(p.join(searchDir.path, '.dart_tool', rootUri)),
            };
            return p.join(root, 'src', 'native');
          }
        }
      } on FormatException catch (e) {
        throw StateError('Failed to parse ${configFile.path} while resolving the nitro native path: ${e.message}');
      } on FileSystemException catch (e) {
        throw StateError('Failed to read ${configFile.path} while resolving the nitro native path: ${e.message}');
      }
    }
    final parent = searchDir.parent;
    if (parent.path == searchDir.path) break;
    searchDir = parent;
  }
  return p.normalize(
    p.absolute(p.join(pluginDir, '..', 'packages', 'nitro', 'src', 'native')),
  );
}