Linter Demo

Errors: 0

Warnings: 8

File: /home/fstrocco/Dart/dart/benchmark/koverage/lib/src/resolver.dart

library coverage.resolver; import 'dart:async'; import 'dart:io'; import 'package:path/path.dart' as p; /// [Resolver] resolves imports with respect to a given environment. class Resolver { static const DART_PREFIX = 'dart:'; static const PACKAGE_PREFIX = 'package:'; static const FILE_PREFIX = 'file://'; final String packageRoot; final String sdkRoot; final List<String> failed = []; Resolver({this.packageRoot, this.sdkRoot}); /// Returns the absolute path wrt. to the given environment or null, if the /// import could not be resolved. String resolve(String uri) { if (uri.startsWith(DART_PREFIX)) { if (sdkRoot == null) { // No sdk-root given, do not resolve dart: URIs. return null; } var slashPos = uri.indexOf('/'); var filePath; if (slashPos != -1) { var path = uri.substring(DART_PREFIX.length, slashPos); // Drop patch files, since we don't have their source in the compiled // SDK. if (path.endsWith('-patch')) { failed.add(uri); return null; } // Canonicalize path. For instance: _collection-dev => _collection_dev. path = path.replaceAll('-', '_'); filePath = '$sdkRoot/${path}${uri.substring(slashPos, uri.length)}'; } else { // Resolve 'dart:something' to be something/something.dart in the SDK. var lib = uri.substring(DART_PREFIX.length, uri.length); filePath = '$sdkRoot/$lib/${lib}.dart'; } return resolveSymbolicLinks(filePath); } if (uri.startsWith(PACKAGE_PREFIX)) { if (packageRoot == null) { // No package-root given, do not resolve package: URIs. return null; } var path = uri.substring(PACKAGE_PREFIX.length, uri.length); return resolveSymbolicLinks(p.join(packageRoot, path)); } if (uri.startsWith(FILE_PREFIX)) { return resolveSymbolicLinks(p.fromUri(Uri.parse(uri))); } // We cannot deal with anything else. failed.add(uri); return null; } /// Returns a canonicalized path, or `null` if the path cannot be resolved. String resolveSymbolicLinks(String path) { var normalizedPath = p.normalize(path); var type = FileSystemEntity.typeSync(normalizedPath, followLinks: true); if (type == FileSystemEntityType.NOT_FOUND) return null; return new File(normalizedPath).resolveSymbolicLinksSync(); } } /// Loads the lines of imported resources. class Loader { final List<String> failed = []; /// Loads an imported resource and returns a [Future] with a [List] of lines. /// Returns [null] if the resource could not be loaded. Future<List<String>> load(String path) async { try { return new File(path).readAsLines(); } catch (_) { failed.add(path); return null; } } }