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Java > Open Source Codes > com > caucho > quercus > lib > file > DirectoryValue


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.quercus.lib.file;
31
32 import com.caucho.quercus.env.BooleanValue;
33 import com.caucho.quercus.env.Env;
34 import com.caucho.quercus.env.ResourceValue;
35 import com.caucho.quercus.env.StringValueImpl;
36 import com.caucho.quercus.env.Value;
37 import com.caucho.vfs.Path;
38
39 import java.io.IOException JavaDoc;
40
41 /**
42  * Represents a PHP directory listing
43  */
44 public class DirectoryValue extends ResourceValue {
45   private Path _path;
46   private String JavaDoc []_list;
47   private int _index;
48
49   protected DirectoryValue()
50   {
51   }
52
53   public DirectoryValue(Path path)
54     throws IOException JavaDoc
55   {
56     _path = path;
57
58     _list = path.list();
59   }
60
61   /**
62    * Returns the next value.
63    */
64   public Value readdir()
65   {
66     if (_index < _list.length)
67       return new StringValueImpl(_list[_index++]);
68     else
69       return BooleanValue.FALSE;
70   }
71
72   /**
73    * Rewinds the directory
74    */
75   public void rewinddir()
76   {
77     _index = 0;
78   }
79
80   /**
81    * Calls the given method.
82    */
83   public Value callMethod(Env env, String JavaDoc method)
84   {
85     if ("read".equals(method))
86       return readdir();
87     else if ("rewind".equals(method)) {
88       rewinddir();
89
90       return BooleanValue.TRUE;
91     }
92     else if ("close".equals(method)) {
93       close();
94
95       return BooleanValue.TRUE;
96     }
97     else
98       return super.callMethod(env, method);
99   }
100
101   /**
102    * Converts to a string.
103    * @param env
104    */
105   public String JavaDoc toString()
106   {
107     return "Directory[" + _path + "]";
108   }
109 }
110
111
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