unfork DDC's copy of most SDK libraries

pkg/dev_compiler/tool/input_sdk/lib/io/link.dart

Index: pkg/dev_compiler/tool/input_sdk/lib/io/link.dart
diff --git a/pkg/dev_compiler/tool/input_sdk/lib/io/link.dart b/pkg/dev_compiler/tool/input_sdk/lib/io/link.dart
deleted file mode 100644
index 25be38c102566f66bb430728647ab8e8ff224485..0000000000000000000000000000000000000000
--- a/pkg/dev_compiler/tool/input_sdk/lib/io/link.dart
+++ /dev/null
@@ -1,305 +0,0 @@
-// Copyright (c) 2013, 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.
-
-part of dart.io;
-
-/**
- * [Link] objects are references to filesystem links.
- *
- */
-abstract class Link implements FileSystemEntity {
-  /**
-   * Creates a Link object.
-   */
-  factory Link(String path) => new _Link(path);
-
-  /**
-   * Creates a [Link] object.
-   *
-   * If [path] is a relative path, it will be interpreted relative to the
-   * current working directory (see [Directory.current]), when used.
-   *
-   * If [path] is an absolute path, it will be immune to changes to the
-   * current working directory.
-   */
-  factory Link.fromUri(Uri uri) => new Link(uri.toFilePath());
-
-  /**
-   * Creates a symbolic link. Returns a [:Future<Link>:] that completes with
-   * the link when it has been created. If the link exists,
-   * the future will complete with an error.
-   *
-   * If [recursive] is false, the default, the link is created
-   * only if all directories in its path exist.
-   * If [recursive] is true, all non-existing path
-   * components are created. The directories in the path of [target] are
-   * not affected, unless they are also in [path].
-   *
-   * On the Windows platform, this will only work with directories, and the
-   * target directory must exist. The link will be created as a Junction.
-   * Only absolute links will be created, and relative paths to the target
-   * will be converted to absolute paths by joining them with the path of the
-   * directory the link is contained in.
-   *
-   * On other platforms, the posix symlink() call is used to make a symbolic
-   * link containing the string [target].  If [target] is a relative path,
-   * it will be interpreted relative to the directory containing the link.
-   */
-  Future<Link> create(String target, {bool recursive: false});
-
-  /**
-   * Synchronously create the link. Calling [createSync] on an existing link
-   * will throw an exception.
-   *
-   * If [recursive] is false, the default, the link is created only if all
-   * directories in its path exist. If [recursive] is true, all
-   * non-existing path components are created. The directories in
-   * the path of [target] are not affected, unless they are also in [path].
-   *
-   * On the Windows platform, this will only work with directories, and the
-   * target directory must exist. The link will be created as a Junction.
-   * Only absolute links will be created, and relative paths to the target
-   * will be converted to absolute paths.
-   *
-   * On other platforms, the posix symlink() call is used to make a symbolic
-   * link containing the string [target].  If [target] is a relative path,
-   * it will be interpreted relative to the directory containing the link.
-   */
-  void createSync(String target, {bool recursive: false});
-
-  /**
-   * Synchronously updates the link. Calling [updateSync] on a non-existing link
-   * will throw an exception.
-   *
-   * On the Windows platform, this will only work with directories, and the
-   * target directory must exist.
-   */
-  void updateSync(String target);
-
-  /**
-   * Updates the link. Returns a [:Future<Link>:] that completes with the
-   * link when it has been updated.  Calling [update] on a non-existing link
-   * will complete its returned future with an exception.
-   *
-   * On the Windows platform, this will only work with directories, and the
-   * target directory must exist.
-   */
-  Future<Link> update(String target);
-
-  Future<String> resolveSymbolicLinks();
-
-  String resolveSymbolicLinksSync();
-
-  /**
-   * Renames this link. Returns a `Future<Link>` that completes
-   * with a [Link] instance for the renamed link.
-   *
-   * If [newPath] identifies an existing link, that link is
-   * replaced. If [newPath] identifies an existing file or directory,
-   * the operation fails and the future completes with an exception.
-   */
-  Future<Link> rename(String newPath);
-
-   /**
-   * Synchronously renames this link. Returns a [Link]
-   * instance for the renamed link.
-   *
-   * If [newPath] identifies an existing link, that link is
-   * replaced. If [newPath] identifies an existing file or directory
-   * the operation fails and an exception is thrown.
-   */
-  Link renameSync(String newPath);
-
-  /**
-   * Returns a [Link] instance whose path is the absolute path to [this].
-   *
-   * The absolute path is computed by prefixing
-   * a relative path with the current working directory, and returning
-   * an absolute path unchanged.
-   */
-  Link get absolute;
-
-  /**
-   * Gets the target of the link. Returns a future that completes with
-   * the path to the target.
-   *
-   * If the returned target is a relative path, it is relative to the
-   * directory containing the link.
-   *
-   * If the link does not exist, or is not a link, the future completes with
-   * a FileSystemException.
-   */
-  Future<String> target();
-
-  /**
-   * Synchronously gets the target of the link. Returns the path to the target.
-   *
-   * If the returned target is a relative path, it is relative to the
-   * directory containing the link.
-   *
-   * If the link does not exist, or is not a link, throws a FileSystemException.
-   */
-  String targetSync();
-}
-
-
-class _Link extends FileSystemEntity implements Link {
-  final String path;
-
-  _Link(this.path) {
-    if (path is! String) {
-      throw new ArgumentError('${Error.safeToString(path)} '
-                              'is not a String');
-    }
-  }
-
-  String toString() => "Link: '$path'";
-
-  Future<bool> exists() => FileSystemEntity.isLink(path);
-
-  bool existsSync() => FileSystemEntity.isLinkSync(path);
-
-  Link get absolute => new Link(_absolutePath);
-
-  Future<FileStat> stat() => FileStat.stat(path);
-
-  FileStat statSync() => FileStat.statSync(path);
-
-  Future<Link> create(String target, {bool recursive: false}) {
-    if (Platform.isWindows) {
-      target = _makeWindowsLinkTarget(target);
-    }
-    var result = recursive ? parent.create(recursive: true)
-                           : new Future.value(null);
-    return result
-      .then((_) => _IOService._dispatch(_FILE_CREATE_LINK, [path, target]))
-      .then((response) {
-        if (_isErrorResponse(response)) {
-          throw _exceptionFromResponse(
-              response, "Cannot create link to target '$target'", path);
-        }
-        return this;
-      });
-  }
-
-  void createSync(String target, {bool recursive: false}) {
-    if (recursive) {
-      parent.createSync(recursive: true);
-    }
-    if (Platform.isWindows) {
-      target = _makeWindowsLinkTarget(target);
-    }
-    var result = _File._createLink(path, target);
-    throwIfError(result, "Cannot create link", path);
-  }
-
-  // Put target into the form "\??\C:\my\target\dir".
-  String _makeWindowsLinkTarget(String target) {
-    Uri base = new Uri.file('${Directory.current.path}\\');
-    Uri link = new Uri.file(path);
-    Uri destination = new Uri.file(target);
-    String result = base.resolveUri(link).resolveUri(destination).toFilePath();
-    if (result.length > 3 && result[1] == ':' && result[2] == '\\') {
-      return '\\??\\$result';
-    } else {
-      throw new FileSystemException(
-          'Target $result of Link.create on Windows cannot be converted' +
-          ' to start with a drive letter.  Unexpected error.');
-    }
-  }
-
-  void updateSync(String target) {
-    // TODO(12414): Replace with atomic update, where supported by platform.
-    // Atomically changing a link can be done by creating the new link, with
-    // a different name, and using the rename() posix call to move it to
-    // the old name atomically.
-    deleteSync();
-    createSync(target);
-  }
-
-  Future<Link> update(String target) {
-    // TODO(12414): Replace with atomic update, where supported by platform.
-    // Atomically changing a link can be done by creating the new link, with
-    // a different name, and using the rename() posix call to move it to
-    // the old name atomically.
-    return delete().then((_) => create(target));
-  }
-
-  Future<Link> _delete({bool recursive: false}) {
-    if (recursive) {
-      return new Directory(path).delete(recursive: true).then((_) => this);
-    }
-    return _IOService._dispatch(_FILE_DELETE_LINK, [path]).then((response) {
-      if (_isErrorResponse(response)) {
-        throw _exceptionFromResponse(response, "Cannot delete link", path);
-      }
-      return this;
-    });
-  }
-
-  void _deleteSync({bool recursive: false}) {
-    if (recursive) {
-      return new Directory(path).deleteSync(recursive: true);
-    }
-    var result = _File._deleteLinkNative(path);
-    throwIfError(result, "Cannot delete link", path);
-  }
-
-  Future<Link> rename(String newPath) {
-    return _IOService._dispatch(_FILE_RENAME_LINK, [path, newPath])
-        .then((response) {
-          if (_isErrorResponse(response)) {
-            throw _exceptionFromResponse(
-                response, "Cannot rename link to '$newPath'", path);
-          }
-          return new Link(newPath);
-        });
-  }
-
-  Link renameSync(String newPath) {
-    var result = _File._renameLink(path, newPath);
-    throwIfError(result, "Cannot rename link '$path' to '$newPath'");
-    return new Link(newPath);
-  }
-
-  Future<String> target() {
-    return _IOService._dispatch(_FILE_LINK_TARGET, [path]).then((response) {
-      if (_isErrorResponse(response)) {
-        throw _exceptionFromResponse(
-            response, "Cannot get target of link", path);
-      }
-      return response;
-    });
-  }
-
-  String targetSync() {
-    var result = _File._linkTarget(path);
-    throwIfError(result, "Cannot read link", path);
-    return result;
-  }
-
-  static throwIfError(Object result, String msg, [String path = ""]) {
-    if (result is OSError) {
-      throw new FileSystemException(msg, path, result);
-    }
-  }
-
-  bool _isErrorResponse(response) {
-    return response is List && response[0] != _SUCCESS_RESPONSE;
-  }
-
-  _exceptionFromResponse(response, String message, String path) {
-    assert(_isErrorResponse(response));
-    switch (response[_ERROR_RESPONSE_ERROR_TYPE]) {
-      case _ILLEGAL_ARGUMENT_RESPONSE:
-        return new ArgumentError();
-      case _OSERROR_RESPONSE:
-        var err = new OSError(response[_OSERROR_RESPONSE_MESSAGE],
-                              response[_OSERROR_RESPONSE_ERROR_CODE]);
-        return new FileSystemException(message, path, err);
-      default:
-        return new Exception("Unknown error");
-    }
-  }
-}