GWTMain


1   /*
2    * Copyright 2006 Google Inc.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5    * use this file except in compliance with the License. You may obtain a copy of
6    * the License at
7    * 
8    * http://www.apache.org/licenses/LICENSE-2.0
9    * 
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations under
14   * the License.
15   */
16  package com.google.gwt.dev;
17  
18  import com.google.gwt.dev.util.Util;
19  
20  /**
21   * Executable class provides help to users who run the jar by indicating
22   * the enclosed classes that are executable.
23   */
24  public class GWTMain {
25  
26    public static void main(String   args[]) {
27      String   aboutText = Util.getFileFromInstallPath("about.txt");
28      if (aboutText != null) {
29        System.err.println(aboutText);
30      } else {
31        System.err.println(About.GWT_VERSION);
32      }
33      System.err.println("Available main classes:");
34      System.err.println(addSpaces(GWTShell.class.getName(),
35        "runs the development shell"));
36      System.err.println(addSpaces(GWTCompiler.class.getName(),
37        "compiles a GWT module"));
38    }
39  
40    private static String   addSpaces(String   first, String   second) {
41      StringBuffer   sb = new StringBuffer  ();
42      sb.append(' ');
43      sb.append(first);
44      for (int i = sb.length(); i < 40; ++i) {
45        sb.append(' ');
46      }
47      sb.append(second);
48      return sb.toString();
49    }
50  
51  }
52
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