Move mojo and mojom from mojo/public/dart to mojo/dart/packages

mojo/public/dart/mojom/lib/src/mojom_finder.dart

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-part of generate;
-
-class PackageInfo {
-  final String name;
-  final Directory packageDir;
-  final Directory importDir;
-  final List<File> mojomFiles;
-  PackageInfo(this.name, this.packageDir, this.importDir, this.mojomFiles);
-}
-
-/// This class finds .mojom files under [_mojomRootDir] that have a
-/// 'DartPackage' annotation. It locates the packages named in the annotations
-/// and generates a list of [PackageInfo] records.
-class MojomFinder {
-  static final Stopwatch _stopwatch = new Stopwatch();
-  static dev.Counter _mojomMs;
-
-  Directory _mojomRootDir;
-  Directory _dartRootDir;
-  List<String> _skip;
-  Map<String, String> _packageLocations;
-
-  MojomFinder(this._mojomRootDir, this._dartRootDir, this._skip) {
-    _packageLocations = new Map<String, String>();
-    if (_mojomMs == null) {
-      _mojomMs = new dev.Counter("mojom searching",
-          "Time(ms) searching for .mojom files with DartPackage annotations.");
-      dev.Metrics.register(_mojomMs);
-    }
-  }
-
-  /// Look for .mojom files in the tree that have a DartPackage annotation.
-  /// Return a list of PackageInfo records describing packages and the .mojom
-  /// files that they own.
-  Future<List<PackageInfo>> find() async {
-    _stopwatch.start();
-    var packageInfos = new Map<String, PackageInfo>();
-    var mojomRootList = _mojomRootDir.list(recursive: true, followLinks: false);
-    await for (var entry in mojomRootList) {
-      if (entry is! File) continue;
-      if (_shouldSkip(entry)) continue;
-      if (!isMojom(entry.path)) continue;
-
-      String package = await _extractDartPackageAttribute(entry);
-      if (package == null) continue;
-
-      log.info("MojomFinder: found package $package");
-      if (packageInfos.containsKey(package)) {
-        packageInfos[package].mojomFiles.add(entry);
-        continue;
-      }
-
-      Directory dartSourceDir = await _findDartSourceDir(package);
-      if (dartSourceDir == null) {
-        log.warning(".mojom had annotation '$package', but no package by that "
-            "name under $_dartRootDir could be found.");
-        continue;
-      }
-      log.info("MojomFinder: found $package at $dartSourceDir");
-
-      var packageInfo =
-          new PackageInfo(package, dartSourceDir, _mojomRootDir, [entry]);
-      packageInfos[package] = packageInfo;
-    }
-    _stopwatch.stop();
-    _mojomMs.value += _stopwatch.elapsedMilliseconds;
-    _stopwatch.reset();
-    return packageInfos.values.toList();
-  }
-
-  /// Extract a DartPackage attribute from a .mojom file.
-  Future<String> _extractDartPackageAttribute(File mojom) async {
-    String contents = await mojom.readAsString();
-    int dpIndex = contents.indexOf('DartPackage');
-    if (dpIndex == -1) return null;
-
-    // There must be a '[' before 'DartPackage', and there can't be a ']'
-    // in between.
-    int openSbIndex = contents.lastIndexOf('[', dpIndex);
-    if (openSbIndex == -1) return null;
-    int closeSbIndex = contents.lastIndexOf(']', dpIndex);
-    if (closeSbIndex > openSbIndex) return null;
-
-    int eqIndex = contents.indexOf('=', dpIndex);
-    if (eqIndex == -1) return null;
-    int openQuoteIndex = contents.indexOf('"', eqIndex);
-    if (openQuoteIndex == -1) return null;
-    int closeQuoteIndex = -1;
-    int searchIndex = openQuoteIndex + 1;
-    while (closeQuoteIndex == -1) {
-      closeQuoteIndex = contents.indexOf('"', searchIndex);
-      if (closeQuoteIndex == -1) break;
-      if (contents[closeQuoteIndex - 1] == '\\') {
-        searchIndex = closeQuoteIndex + 1;
-        closeQuoteIndex = -1;
-      }
-    }
-    if (closeQuoteIndex == -1) return null;
-    return contents.substring(openQuoteIndex + 1, closeQuoteIndex);
-  }
-
-  /// Finds where the Dart package named [package] lives. Looks immediately
-  /// under [_dartRootDir].
-  Future<Directory> _findDartSourceDir(String package) async {
-    var packagePath = path.join(_dartRootDir.path, package);
-    Directory packageDir = new Directory(packagePath);
-    log.info("Looking for dart package: $packagePath");
-    if (await packageDir.exists()) {
-      return packageDir;
-    } else {
-      log.info("$packagePath not found");
-    }
-  }
-
-  bool _shouldSkip(File f) => containsPrefix(f.path, _skip);
-}