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1
6 package org.ofbiz.base.start;
8
9 import java.io.File  ;
10 import java.io.IOException ;
11 import java.net.MalformedURLException ;
12 import java.net.URL ;
13 import java.net.URLClassLoader ;
14 import java.util.ArrayList ;
15 import java.util.List ;
16 import java.util.StringTokenizer ;
17
18
22 public class Classpath {
23
24 private List _elements = new ArrayList ();
25
26 public Classpath() {}
27
28 public Classpath(String initial) {
29 addClasspath(initial);
30 }
31
32 public boolean addComponent(String component) {
33 if ((component != null) && (component.length() > 0)) {
34 try {
35 File f = new File (component);
36 if (f.exists()) {
37 File key = f.getCanonicalFile();
38 if (!_elements.contains(key)) {
39 _elements.add(key);
40 return true;
41 }
42 }
43 } catch (IOException e) {}
44 }
45 return false;
46 }
47
48 public boolean addComponent(File component) {
49 if (component != null) {
50 try {
51 if (component.exists()) {
52 File key = component.getCanonicalFile();
53 if (!_elements.contains(key)) {
54 _elements.add(key);
55 return true;
56 }
57 }
58 } catch (IOException e) {}
59 }
60 return false;
61 }
62
63 public boolean addClasspath(String s) {
64 boolean added = false;
65 if (s != null) {
66 StringTokenizer t = new StringTokenizer (s, File.pathSeparator);
67 while (t.hasMoreTokens()) {
68 added |= addComponent(t.nextToken());
69 }
70 }
71 return added;
72 }
73
74 public String toString() {
75 StringBuffer cp = new StringBuffer (1024);
76 int cnt = _elements.size();
77 if (cnt >= 1) {
78 cp.append(((File ) (_elements.get(0))).getPath());
79 }
80 for (int i = 1; i < cnt; i++) {
81 cp.append(File.pathSeparatorChar);
82 cp.append(((File ) (_elements.get(i))).getPath());
83 }
84 return cp.toString();
85 }
86
87 public URL [] getUrls() {
88 int cnt = _elements.size();
89 URL [] urls = new URL [cnt];
90 for (int i = 0; i < cnt; i++) {
91 try {
92 urls[i] = ((File ) (_elements.get(i))).toURL();
93 } catch (MalformedURLException e) {}
94 }
95 return urls;
96 }
97
98 public ClassLoader getClassLoader() {
99 URL [] urls = getUrls();
100
101 ClassLoader parent = Thread.currentThread().getContextClassLoader();
102 if (parent == null) {
103 parent = Classpath.class.getClassLoader();
104 }
105 if (parent == null) {
106 parent = ClassLoader.getSystemClassLoader();
107 }
108 return new URLClassLoader (urls, parent);
109 }
110
111 public List getElements() {
112 return _elements;
113 }
114 }
115 |
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