Migration of testing scripts in tools/ to libv2

tools/release/version.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.
 
 /**
  * This file contains functionality for getting dart version numbers using
  * our standard version construction method. Systems that does not include this
  * file should emulate the structure for revision numbers that we have here.
  *
  * The version number of a dart build is constructed as follows:
  *   1. The major, minor, build and patch numbers are extracted from the VERSION
  *      file in the root directory. We call these MAJOR, MINOR, BUILD and PATCH.
  *   2. The svn revision number for the current checkout is extracted from the
  *      source control system that is used in the current checkout. We call this
  *      REVISION.
  *   3. If this is _not_ a official build, i.e., this is not build by our
  *      buildbot infrastructure, we extract the user-name of the logged in
  *      person from the operating system. We call this USERNAME.
  *   4. The version number is constructed as follows:
  *      MAJOR.MINOR.BUILD.PATCH_rREVISION_USERNAME
  */
 
 library version;
+
+import "dart:async";
 import "dart:io";
 
 /**
  * Generates version information for builds.
  */
 class Version {
   String _versionFileName;
   String USERNAME;
   int REVISION;
   int MAJOR;
   int MINOR;
   int BUILD;
   int PATCH;
 
   Version(Path versionFile) {
     _versionFileName = versionFile.toNativePath();
   }
 
   /**
    * Get the version number for this specific build using the version info
    * from the VERSION file in the root directory and the revision info
    * from the source control system of the current checkout.
    */
   Future<String> getVersion() {
     File f = new File(_versionFileName);
     Completer c = new Completer();
+
+    var wasCompletedWithError = false;
+    completeError(String msg) {
+      if (!wasCompletedWithError) {
+        c.completeError(msg);
+        wasCompletedWithError = true;
+      }
+    }
     f.exists().then((existed) {
       if (!existed) {
-        c.completeError("No VERSION file");
+        completeError("No VERSION file");
         return;
       }
       StringInputStream input = new StringInputStream(f.openInputStream());
       input.onLine = () {
         var line = input.readLine().trim();
         if (line == null) {
-          c.completeError(
+          completeError(
               "VERSION input file seems to be in the wrong format");
           return;
         }
         var values = line.split(" ");
         if (values.length != 2) {
-          c.completeError(
+          completeError(
               "VERSION input file seems to be in the wrong format");
           return;
         }
         var number = 0;
         try {
           number = int.parse(values[1]);
         } catch (e) {
-          c.completeError("Can't parse version numbers, not an int");
+          completeError("Can't parse version numbers, not an int");
           return;
         }
         switch (values[0]) {
           case "MAJOR":
             MAJOR = number;
             break;
           case "MINOR":
             MINOR = number;
             break;
           case "BUILD":
             BUILD = number;
             break;
           case "PATCH":
             PATCH = number;
             break;
           default:
-            c.completeError("Wrong format in VERSION file, line does not "
+            completeError("Wrong format in VERSION file, line does not "
                             "contain one of {MAJOR, MINOR, BUILD, PATCH}");
             return;
         }
       };
       input.onClosed = () {
         // Only complete if we did not already complete with a failure.
-        if (!c.future.isComplete) {
+        if (!wasCompletedWithError) {
           getRevision().then((revision) {
             REVISION = revision;
             USERNAME = getUserName();
             var userNameString = "";
             if (USERNAME != '') userNameString = "_$USERNAME";
             var revisionString = "";
             if (revision != 0) revisionString = "_r$revision";
             c.complete(
                 "$MAJOR.$MINOR.$BUILD.$PATCH$revisionString$userNameString");
             return;
@@ skipping 37 matching lines @@
     command = "$command${getExecutableSuffix()}";
     var arguments = isSvn ? ["info"] : ["svn", "info"];
     ProcessOptions options = new ProcessOptions();
     // Run the command from the root to get the last changed revision for this
     // "branch". Since we have both trunk and bleeding edge in the same
     // repository and since we always build TOT we need this to get the
     // right version number.
     Path toolsDirectory = new Path.fromNative(_versionFileName).directoryPath;
     Path root = toolsDirectory.join(new Path(".."));
     options.workingDirectory = root.toNativePath();
-    return Process.run(command, arguments, options).transform((result) {
+    return Process.run(command, arguments, options).then((result) {
       if (result.exitCode != 0) {
         return 0;
       }
       return getRevisionFromSvnInfo(result.stdout);
     });
   }
 
   bool isProductionBuild(String username) {
     return username == "chrome-bot";
   }
@@ skipping 40 matching lines @@
   static RepositoryType guessType() {
     if (new Directory(".svn").existsSync()) return RepositoryType.SVN;
     if (new Directory(".git").existsSync()) return RepositoryType.GIT;
     return RepositoryType.UNKNOWN;
   }
 
   String toString() => name;
 
   final String name;
 }