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1 | /* | |
2 | * Copyright (c) 2006, University of Kent | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions are met: | |
7 | * | |
8 | * Redistributions of source code must retain the above copyright notice, this | |
9 | * list of conditions and the following disclaimer. | |
10 | * | |
11 | * Redistributions in binary form must reproduce the above copyright notice, | |
12 | * this list of conditions and the following disclaimer in the documentation | |
13 | * and/or other materials provided with the distribution. | |
14 | * | |
15 | * 1. Neither the name of the University of Kent nor the names of its | |
16 | * contributors may be used to endorse or promote products derived from this | |
17 | * software without specific prior written permission. | |
18 | * | |
19 | * 2. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
22 | * PURPOSE ARE DISCLAIMED. | |
23 | * | |
24 | * 3. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
25 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
31 | * POSSIBILITY OF SUCH DAMAGE. | |
32 | * | |
33 | * 4. YOU AGREE THAT THE EXCLUSIONS IN PARAGRAPHS 2 AND 3 ABOVE ARE REASONABLE | |
34 | * IN THE CIRCUMSTANCES. IN PARTICULAR, YOU ACKNOWLEDGE (1) THAT THIS | |
35 | * SOFTWARE HAS BEEN MADE AVAILABLE TO YOU FREE OF CHARGE, (2) THAT THIS | |
36 | * SOFTWARE IS NOT "PRODUCT" QUALITY, BUT HAS BEEN PRODUCED BY A RESEARCH | |
37 | * GROUP WHO DESIRE TO MAKE THIS SOFTWARE FREELY AVAILABLE TO PEOPLE WHO WISH | |
38 | * TO USE IT, AND (3) THAT BECAUSE THIS SOFTWARE IS NOT OF "PRODUCT" QUALITY | |
39 | * IT IS INEVITABLE THAT THERE WILL BE BUGS AND ERRORS, AND POSSIBLY MORE | |
40 | * SERIOUS FAULTS, IN THIS SOFTWARE. | |
41 | * | |
42 | * 5. This license is governed, except to the extent that local laws | |
43 | * necessarily apply, by the laws of England and Wales. | |
44 | */ | |
45 | package issrg.utils; | |
46 | ||
47 | import java.util.ResourceBundle; | |
48 | import java.util.MissingResourceException; | |
49 | import java.util.Date; | |
50 | import java.text.SimpleDateFormat; | |
51 | import java.text.ParseException; | |
52 | ||
53 | /** | |
54 | * This class stores the version information about a given package. Use it to | |
55 | * collect the version from a bundle. | |
56 | * | |
57 | * @author A.Otenko | |
58 | */ | |
59 | public class Version { | |
60 | protected static final String VERSION_MAJOR_PROPERTY="version.major"; | |
61 | protected static final String VERSION_MINOR_PROPERTY="version.minor"; | |
62 | protected static final String VERSION_MINOR_MINOR_PROPERTY="version.minor.minor"; | |
63 | protected static final String RELEASE_DATE_PATTERN_PROPERTY="release.date.pattern"; | |
64 | protected static final String RELEASE_DATE_PROPERTY="release.date"; | |
65 | ||
66 | /** | |
67 | * The default date pattern, if the pattern is missing in the bundle: | |
68 | * "yyyy/MM/dd HH:mm". | |
69 | */ | |
70 | protected static final String DEFAULT_DATE_PATTERN="yyyy/MM/dd HH:mm"; | |
71 | ||
72 | String version; | |
73 | Date date; | |
74 | ||
75 | /** | |
76 | * This constructor builds a Version object given a resource bundle name | |
77 | * and a package name. It assumes there are <pkg>.version.major, | |
78 | * <pkg>.version.minor, <pkg>.release.date.pattern and | |
79 | * <pkg>.release.date properties. If some are missing, or the pattern | |
80 | * of the date does not let parse the release date, the corresponding values | |
81 | * will be null. If the date pattern is not available, the | |
82 | * DEFAULT_DATE_PATTERN is used. | |
83 | * | |
84 | * @param bundle - the bundle name | |
85 | * @param pkg - the package name, which is the prefix used to get the version | |
86 | * information properties in the bundle (e.g. "acm" is prefixed to | |
87 | * get "version.major" for ACM) | |
88 | */ | |
89 | 9 | public Version(String bundle, String pkg){ |
90 | 9 | try{ |
91 | 9 | ResourceBundle rbl = ResourceBundle.getBundle(bundle); |
92 | ||
93 | 0 | String s=rbl.getString(pkg+"."+VERSION_MAJOR_PROPERTY); |
94 | 0 | if (s!=null){ |
95 | 0 | version=s+"."; |
96 | 0 | s=rbl.getString(pkg+"."+VERSION_MINOR_PROPERTY); |
97 | 0 | if (s!=null) version+=s+"."; |
98 | 0 | else version+="0."; |
99 | 0 | s=rbl.getString(pkg+"."+VERSION_MINOR_MINOR_PROPERTY); |
100 | 0 | if (s!=null) version+=s; |
101 | 0 | else version+="0"; |
102 | } | |
103 | ||
104 | 0 | s=rbl.getString(pkg+"."+RELEASE_DATE_PATTERN_PROPERTY); |
105 | 0 | if (s==null) s=DEFAULT_DATE_PATTERN; |
106 | ||
107 | 0 | SimpleDateFormat sdf=new SimpleDateFormat(s); |
108 | 0 | s=rbl.getString(pkg+"."+RELEASE_DATE_PROPERTY); |
109 | 0 | try{ |
110 | 0 | if (s!=null) date=sdf.parse(s); |
111 | }catch(ParseException pe){ | |
112 | // ignore | |
113 | } | |
114 | }catch(MissingResourceException em){ | |
115 | // ignore | |
116 | } | |
117 | } | |
118 | ||
119 | /** | |
120 | * This method returns the version string. | |
121 | * | |
122 | * @return version string in a form "major.minor", or null, if no version | |
123 | * is available; if "minor" is not available, "0" will be displayed as the | |
124 | * minor version | |
125 | */ | |
126 | 5 | public String getVersion(){ |
127 | 5 | return version; |
128 | } | |
129 | ||
130 | /** | |
131 | * This method returns the date of releasing the package, as recorded in the | |
132 | * resource bundle. | |
133 | * | |
134 | * @return the date, or null, if date was not available, or the pattern | |
135 | * specified could not be applied | |
136 | */ | |
137 | 0 | public Date getReleaseDate(){ |
138 | 0 | return date; |
139 | } | |
140 | } |
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