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1 package net.javacoding.jspider.core.util;
2
3 import java.net.URL  ;
4 import java.net.MalformedURLException ;
5
6
9 public class EMailAddressUtil {
10
11 public static final String PROTOCOL_PREFIX = "mailto:";
12
13 public static boolean canBeEMailAddress(String urlString) {
14 boolean result = false;
15 URL url = fixEMailAddress(urlString);
16
17 if ( url != null ) {
18 result = isEMailAddress(fixEMailAddress(urlString));
19 }
20
21 return result;
22 }
23
24 public static URL fixEMailAddress(String urlString) {
25 URL result = null;
26 try {
27 result = new URL (urlString);
28 } catch (MalformedURLException e) {
29 try {
30 result = new URL (PROTOCOL_PREFIX + urlString);
31 } catch (MalformedURLException ex) { }
32 }
33
34 if (result == null || !isEMailAddress(result)) {
35 result = null;
36 }
37
38 return result;
39 }
40
41 public static boolean isEMailAddress(URL url) {
42 boolean result = true;
43
44 String urlString = url.toString();
45
46 if (url.getHost() != null && !url.getHost().trim().equals("")) {
47 result = false;
48 }
49 if (url.getPort() != -1) {
50 result = false;
51 }
52
53 int pos = urlString.indexOf('@');
54 if (pos == -1) {
55 result = false;
56 } else {
57 if (urlString.indexOf('@', pos + 1) != -1) {
59 return false;
60 }
61 }
62
63 if ( pos > (urlString.length() - 6) ) {
65 result = false;
66 }
67
68 return result;
69
70 }
71
72 public static String getEMailAddress(URL url) {
73 String urlString = url.toString();
74 if (urlString.toLowerCase().startsWith(PROTOCOL_PREFIX)) {
75 urlString = urlString.substring(PROTOCOL_PREFIX.length());
76 } else {
77 urlString = null;
78 }
79 return urlString;
80 }
81
82 }
83 |
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