1   /**
2    * Copyright (c) 2000-2007 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.tools;
24  
25  import com.liferay.portal.kernel.util.StringMaker;
26  import com.liferay.util.FileUtil;
27  
28  /**
29   * <a href="CSSBuilder.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Brian Wing Shun Chan
32   *
33   */
34  public class CSSBuilder {
35  
36      public static void main(String[] args) {
37          if (args.length == 2) {
38              new CSSBuilder(args[0], args[1]);
39          }
40          else {
41              throw new IllegalArgumentException();
42          }
43      }
44  
45      public CSSBuilder(String cssDir, String mergedFile) {
46          try {
47              String content = FileUtil.read(cssDir + "/main.css");
48  
49              content = replaceImports(cssDir, content);
50  
51              FileUtil.write(mergedFile, content);
52          }
53          catch (Exception e) {
54              e.printStackTrace();
55          }
56      }
57  
58      public String replaceImports(String cssDir, String s) throws Exception {
59          StringMaker sm = new StringMaker(s.length());
60  
61          int pos = 0;
62  
63          while (true) {
64              int x = s.indexOf(_BEGIN, pos);
65              int y = s.indexOf(_END, x + _BEGIN.length());
66  
67              if ((x == -1) || (y == -1)) {
68                  sm.append(s.substring(pos, s.length()));
69  
70                  break;
71              }
72              else {
73                  sm.append(s.substring(pos, x));
74  
75                  String importFile = s.substring(x + _BEGIN.length(), y);
76  
77                  String importContent = FileUtil.read(cssDir + "/" + importFile);
78  
79                  importContent = replaceImports(cssDir, importContent);
80  
81                  sm.append(importContent);
82  
83                  pos = y + _END.length();
84              }
85          }
86  
87          return sm.toString();
88      }
89  
90      private static final String _BEGIN = "@import url(";
91  
92      private static final String _END = ");";
93  
94  }