1   /**
2    * Copyright (c) 2000-2008 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  import java.io.File;
29  
30  /**
31   * <a href="CSSBuilder.java.html"><b><i>View Source</i></b></a>
32   *
33   * @author Brian Wing Shun Chan
34   *
35   */
36  public class CSSBuilder {
37  
38      public static void main(String[] args) {
39          if (args.length == 2) {
40              new CSSBuilder(args[0], args[1]);
41          }
42          else {
43              throw new IllegalArgumentException();
44          }
45      }
46  
47      public CSSBuilder(String cssDir, String mergedFile) {
48          try {
49              File mainCssFile = new File(cssDir + "/main.css");
50  
51              if (!mainCssFile.exists()) {
52                  System.out.println(
53                      "Do not pack " + cssDir +
54                          "/main.css because it does not exist.");
55  
56                  return;
57              }
58  
59              String content = FileUtil.read(mainCssFile);
60  
61              content = replaceImports(cssDir, content);
62  
63              FileUtil.write(mergedFile, content);
64          }
65          catch (Exception e) {
66              e.printStackTrace();
67          }
68      }
69  
70      public String replaceImports(String cssDir, String s) throws Exception {
71          StringMaker sm = new StringMaker(s.length());
72  
73          int pos = 0;
74  
75          while (true) {
76              int x = s.indexOf(_BEGIN, pos);
77              int y = s.indexOf(_END, x + _BEGIN.length());
78  
79              if ((x == -1) || (y == -1)) {
80                  sm.append(s.substring(pos, s.length()));
81  
82                  break;
83              }
84              else {
85                  sm.append(s.substring(pos, x));
86  
87                  String importFile = s.substring(x + _BEGIN.length(), y);
88  
89                  String importContent = FileUtil.read(cssDir + "/" + importFile);
90  
91                  importContent = replaceImports(cssDir, importContent);
92  
93                  sm.append(importContent);
94  
95                  pos = y + _END.length();
96              }
97          }
98  
99          return sm.toString();
100     }
101 
102     private static final String _BEGIN = "@import url(";
103 
104     private static final String _END = ");";
105 
106 }