1 package org.apache.turbine.util;
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24 import java.util.StringTokenizer;
25
26 import javax.servlet.ServletConfig;
27 import javax.servlet.ServletContext;
28
29 import org.apache.commons.lang.StringUtils;
30 import org.apache.turbine.Turbine;
31
32
33
34
35
36
37
38
39 public class ServletUtils
40 {
41
42
43
44
45
46
47
48
49
50
51 public static String expandRelative(ServletConfig config,
52 String text)
53 {
54 if (StringUtils.isEmpty(text))
55 {
56 return text;
57 }
58
59 if (config == null)
60 {
61 return null;
62 }
63
64
65 if (!text.startsWith("/") && !text.startsWith("./")
66 && !text.startsWith("\\") && !text.startsWith(".\\"))
67 {
68 StringBuffer sb = new StringBuffer();
69 sb.append("./");
70 sb.append(text);
71 text = sb.toString();
72 }
73
74 ServletContext context = config.getServletContext();
75 String base = context.getRealPath("/");
76
77 base = (StringUtils.isEmpty(base))
78 ? config.getInitParameter(Turbine.BASEDIR_KEY)
79 : base;
80
81 if (StringUtils.isEmpty(base))
82 {
83 return text;
84 }
85
86 String separator = System.getProperty("path.separator");
87
88 StringTokenizer tokenizer = new StringTokenizer(text,
89 separator);
90 StringBuffer buffer = new StringBuffer();
91 while (tokenizer.hasMoreTokens())
92 {
93 buffer.append(base).append(tokenizer.nextToken());
94 if (tokenizer.hasMoreTokens())
95 {
96 buffer.append(separator);
97 }
98 }
99 return buffer.toString();
100 }
101 }