1 /*
2 * @(#)VersionString.java 1.6 05/11/17
3 *
4 * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * -Redistribution of source code must retain the above copyright notice, this
10 * list of conditions and the following disclaimer.
11 *
12 * -Redistribution in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * Neither the name of Sun Microsystems, Inc. or the names of contributors may
17 * be used to endorse or promote products derived from this software without
18 * specific prior written permission.
19 *
20 * This software is provided "AS IS," without a warranty of any kind. ALL
21 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
22 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
23 * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
24 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
25 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
26 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
27 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
28 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
29 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
30 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
31 *
32 * You acknowledge that this software is not designed, licensed or intended
33 * for use in the design, construction, operation or maintenance of any
34 * nuclear facility.
35 */
36
37 package jnlp.sample.util;
38
39 import java.util.ArrayList;
40 import java.util.List;
41 import java.util.StringTokenizer;
42
43 /*
44 * Utility class that knows to handle version strings
45 * A version string is of the form:
46 *
47 * (version-id ('+'?) ' ') *
48 *
49 */
50 public class VersionString
51 {
52 private List<VersionID> _versionIds;
53
54 /**
55 * Constructs a VersionString object from string
56 */
57 public VersionString( String vs )
58 {
59 _versionIds = new ArrayList<VersionID>();
60 if ( vs != null )
61 {
62 StringTokenizer st = new StringTokenizer( vs, " ", false );
63 while ( st.hasMoreElements() )
64 {
65 // Note: The VersionID class takes care of a postfixed '+'
66 _versionIds.add( new VersionID( st.nextToken() ) );
67 }
68 }
69 }
70
71 /**
72 * Check if this VersionString object contains the VersionID m
73 */
74 public boolean contains( VersionID m )
75 {
76 for ( Object _versionId : _versionIds )
77 {
78 VersionID vi = (VersionID) _versionId;
79 boolean check = vi.match( m );
80 if ( check )
81 {
82 return true;
83 }
84 }
85 return false;
86 }
87
88 /**
89 * Check if this VersionString object contains the VersionID m, given as a string
90 */
91 public boolean contains( String versionid )
92 {
93 return contains( new VersionID( versionid ) );
94 }
95
96 /**
97 * Check if this VersionString object contains anything greater than m
98 */
99 public boolean containsGreaterThan( VersionID m )
100 {
101 for ( Object _versionId : _versionIds )
102 {
103 VersionID vi = (VersionID) _versionId;
104 boolean check = vi.isGreaterThan( m );
105 if ( check )
106 {
107 return true;
108 }
109 }
110 return false;
111 }
112
113 /**
114 * Check if this VersionString object contains anything greater than the VersionID m, given as a string
115 */
116 public boolean containsGreaterThan( String versionid )
117 {
118 return containsGreaterThan( new VersionID( versionid ) );
119 }
120
121 /**
122 * Check if the versionString 'vs' contains the VersionID 'vi'
123 */
124 static public boolean contains( String vs, String vi )
125 {
126 return ( new VersionString( vs ) ).contains( vi );
127 }
128
129 /**
130 * Pretty-print object
131 */
132 public String toString()
133 {
134 StringBuilder sb = new StringBuilder();
135 for ( Object _versionId : _versionIds )
136 {
137 sb.append( _versionId.toString() );
138 sb.append( ' ' );
139 }
140 return sb.toString();
141 }
142 }
143
144
145