Reverting 9090

utils/pub/repo_source.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#library('dartlang_source');
-
-#import('dart:io');
-#import('dart:uri');
-#import('io.dart');
-#import('package.dart');
-#import('source.dart');
-#import('utils.dart');
-
-/**
- * A package source that installs packages from a package repository that uses
- * the same API as pub.dartlang.org.
- */
-class RepoSource extends Source {
-  final String name = "repo";
-
-  final bool shouldCache = true;
-
-  // TODO(nweiz): update this comment once pub.dartlang.org is online
-  /**
-   * The URL of the default package repository.
-   *
-   * At time of writing, pub.dartlang.org is not yet online, but it should be
-   * soon.
-   */
-  static final String defaultUrl = "http://pub.dartlang.org";
-
-  RepoSource();
-
-  /**
-   * Downloads a package from a package repository and unpacks it.
-   */
-  Future<bool> install(PackageId id, String destPath) {
-    var parsedDescription = _parseDescription(id.description);
-    var name = parsedDescription.first;
-    var url = parsedDescription.last;
-
-    return ensureDir(destPath).chain((destDir) {
-      var fullUrl = "$url/packages/$name/versions/${id.version}.tar.gz";
-      return extractTarGz(httpGet(fullUrl), destDir);
-    });
-  }
-
-  /**
-   * The system cache directory for the repo source contains subdirectories for
-   * each separate repository URL that's used on the system. Each of these
-   * subdirectories then contains a subdirectory for each package installed from
-   * that repository.
-   */
-  String systemCacheDirectory(PackageId id, String parent) {
-    var parsed = _parseDescription(id.description);
-    var url = parsed.last.replaceAll(new RegExp(@"^https?://"), "");
-    var urlDir = replace(url, new RegExp(@'[<>:"\\/|?*%]'), (match) {
-      return '%${match[0].charCodeAt(0)}';
-    });
-    return join(parent, urlDir, "${parsed.first}-${id.version}");
-  }
-
-  String packageName(PackageId id) => _parseDescription(id.description).first;
-
-  /**
-   * Ensures that [description] is a valid repo description.
-   *
-   * There are two valid formats. A plain string refers to a package with the
-   * given name from the default repository, while a map with keys "name" and
-   * "url" refers to a package with the given name from the repo at the given
-   * URL.
-   */
-  void validateDescription(description) {
-    _parseDescription(description);
-  }
-
-  /**
-   * Parses the description blob for a package.
-   *
-   * If the package parses correctly, this returns a (name, url) pair. If not,
-   * this throws a descriptive FormatException.
-   */
-  Pair<String, String> _parseDescription(description) {
-    if (description is String) {
-      return new Pair<String, String>(description, defaultUrl);
-    }
-
-    if (description is! Map) {
-      throw new FormatException(
-          "The description must be a package name or map.");
-    }
-
-    if (!description.containsKey("name")) {
-      throw new FormatException(
-          "The description map must contain a 'name' key.");
-    }
-
-    var name = description["name"];
-    if (name is! String) {
-      throw new FormatException("The 'name' key must have a string value.");
-    }
-
-    var url = description.containsKey("url") ? description["url"] : defaultUrl;
-    return new Pair<String, String>(name, url);
-  }
-}