Create binstubs for executables when activating a package.

sdk/lib/_internal/pub/lib/src/utils.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.
 
 /// Generic utility functions. Stuff that should possibly be in core.
 library pub.utils;
 
 import 'dart:async';
 import "dart:convert";
 import 'dart:io';
@@ skipping 149 matching lines @@
   final result = new StringBuffer();
   result.write(source);
 
   while (result.length < length) {
     result.write(' ');
   }
 
   return result.toString();
 }
 
+/// Returns a labelled sentence fragment starting with [name] listing the
+/// elements [iter].
+///
+/// If [iter] does not have one item, name will be pluralized by adding "s" or
+/// using [plural], if given.
+String namedSequence(String name, Iterable iter, [String plural]) {
+  if (iter.length == 1) return "$name ${iter.first}";

[nweiz, 2014/09/15 22:57:18]

Nit: I like [iter.single] here.

[Bob Nystrom, 2014/09/17 21:34:35]

Done.

+
+  var sequence = iter.take(iter.length - 1).join(", ") + " and ${iter.last}";

[nweiz, 2014/09/15 22:57:18]

Use [toSentence] here.

[Bob Nystrom, 2014/09/17 21:34:35]

Done.

+  if (plural == null) plural = "${name}s";
+  return "$plural $sequence";
+}
+
 /// Returns a sentence fragment listing the elements of [iter].
 ///
 /// This converts each element of [iter] to a string and separates them with
 /// commas and/or "and" where appropriate.
 String toSentence(Iterable iter) {
   if (iter.length == 1) return iter.first.toString();
   return iter.take(iter.length - 1).join(", ") + " and ${iter.last}";
 }
 
 /// Returns [name] if [number] is 1, or the plural of [name] otherwise.
@@ skipping 697 matching lines @@
   } else {
     throw new ApplicationException(message);
   }
 }
 
 /// Throw a [DataException] with [message] to indicate that the command has
 /// failed because of invalid input data.
 ///
 /// This will report the error and cause pub to exit with [exit_codes.DATA].
 void dataError(String message) => throw new DataException(message);