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.util.FileImpl;
26  
27  import java.io.File;
28  
29  /**
30   * <a href="CSSBuilder.java.html"><b><i>View Source</i></b></a>
31   *
32   * @author Brian Wing Shun Chan
33   *
34   */
35  public class CSSBuilder {
36  
37      public static void main(String[] args) {
38          if (args.length == 2) {
39              new CSSBuilder(args[0], args[1]);
40          }
41          else {
42              throw new IllegalArgumentException();
43          }
44      }
45  
46      public CSSBuilder(String cssDir, String mergedFile) {
47          try {
48              File mainCssFile = new File(cssDir + "/main.css");
49  
50              if (!mainCssFile.exists()) {
51                  System.out.println(
52                      "Do not pack " + cssDir +
53                          "/main.css because it does not exist.");
54  
55                  return;
56              }
57  
58              FileImpl fileImpl = new FileImpl();
59  
60              String content = fileImpl.read(mainCssFile);
61  
62              content = replaceImports(cssDir, content);
63  
64              fileImpl.write(mergedFile, content);
65          }
66          catch (Exception e) {
67              e.printStackTrace();
68          }
69      }
70  
71      public String replaceImports(String cssDir, String s) throws Exception {
72          StringBuilder sb = new StringBuilder(s.length());
73  
74          int pos = 0;
75  
76          while (true) {
77              int x = s.indexOf(_BEGIN, pos);
78              int y = s.indexOf(_END, x + _BEGIN.length());
79  
80              if ((x == -1) || (y == -1)) {
81                  sb.append(s.substring(pos, s.length()));
82  
83                  break;
84              }
85              else {
86                  sb.append(s.substring(pos, x));
87  
88                  String importFile = s.substring(x + _BEGIN.length(), y);
89  
90                  String importContent = _fileUtil.read(
91                      cssDir + "/" + importFile);
92  
93                  String importFilePath = "";
94  
95                  if (importFile.lastIndexOf("/") != -1) {
96                      importFilePath = "/" + importFile.substring(
97                          0, importFile.lastIndexOf("/") + 1);
98                  }
99  
100                 importContent = replaceImports(
101                     cssDir + importFilePath, importContent);
102 
103                 sb.append(importContent);
104 
105                 pos = y + _END.length();
106             }
107         }
108 
109         return sb.toString();
110     }
111 
112     private static final String _BEGIN = "@import url(";
113 
114     private static final String _END = ");";
115 
116     private static FileImpl _fileUtil = new FileImpl();
117 
118 }