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1
6 package fr.jayasoft.ivy.latest;
7
8 import java.util.Comparator  ;
9 import java.util.HashMap ;
10 import java.util.Map ;
11
12 import fr.jayasoft.ivy.ArtifactInfo;
13
14
15 public class LatestRevisionStrategy extends ComparatorLatestStrategy {
16 public static class SpecialMeaning {
17 private String _name;
18 private Integer _value;
19 public String getName() {
20 return _name;
21 }
22 public void setName(String name) {
23 _name = name;
24 }
25 public Integer getValue() {
26 return _value;
27 }
28 public void setValue(Integer value) {
29 _value = value;
30 }
31 public void validate() {
32 if (_name == null) {
33 throw new IllegalStateException ("a special meaning should have a name");
34 }
35 if (_value == null) {
36 throw new IllegalStateException ("a special meaning should have a value");
37 }
38 }
39 }
40
41 private static final Map DEFAULT_SPECIAL_MEANINGS;
42 static {
43 DEFAULT_SPECIAL_MEANINGS = new HashMap ();
44 DEFAULT_SPECIAL_MEANINGS.put("dev", new Integer (-1));
45 DEFAULT_SPECIAL_MEANINGS.put("rc", new Integer (1));
46 DEFAULT_SPECIAL_MEANINGS.put("final", new Integer (2));
47 }
48
49
50
59 public Comparator COMPARATOR = new Comparator () {
60
61 public int compare(Object o1, Object o2) {
62 String rev1 = ((ArtifactInfo)o1).getRevision();
63 String rev2 = ((ArtifactInfo)o2).getRevision();
64 if (rev1.startsWith("latest")) {
65 return 1;
66 }
67 if (rev1.endsWith("+") && rev2.startsWith(rev1.substring(0, rev1.length() - 1))) {
68 return 1;
69 }
70 if (rev2.startsWith("latest")) {
71 return -1;
72 }
73 if (rev2.endsWith("+") && rev1.startsWith(rev2.substring(0, rev2.length() - 1))) {
74 return -1;
75 }
76
77 rev1 = rev1.replaceAll("([a-zA-Z])(\\d)", "$1.$2");
78 rev1 = rev1.replaceAll("(\\d)([a-zA-Z])", "$1.$2");
79 rev2 = rev2.replaceAll("([a-zA-Z])(\\d)", "$1.$2");
80 rev2 = rev2.replaceAll("(\\d)([a-zA-Z])", "$1.$2");
81
82 String [] parts1 = rev1.split("[\\._\\-\\+]");
83 String [] parts2 = rev2.split("[\\._\\-\\+]");
84
85 int i = 0;
86 for (; i < parts1.length && i <parts2.length; i++) {
87 if (parts1[i].equals(parts2[i])) {
88 continue;
89 }
90 boolean is1Number = isNumber(parts1[i]);
91 boolean is2Number = isNumber(parts2[i]);
92 if (is1Number && !is2Number) {
93 return 1;
94 }
95 if (is2Number && !is1Number) {
96 return -1;
97 }
98 if (is1Number && is2Number) {
99 return Long.valueOf(parts1[i]).compareTo(Long.valueOf(parts2[i]));
100 }
101 Map specialMeanings = getSpecialMeanings();
103 Integer sm1 = (Integer )specialMeanings.get(parts1[i].toLowerCase());
104 Integer sm2 = (Integer )specialMeanings.get(parts2[i].toLowerCase());
105 if (sm1 != null) {
106 sm2 = sm2==null?new Integer (0):sm2;
107 return sm1.compareTo(sm2);
108 }
109 if (sm2 != null) {
110 return new Integer (0).compareTo(sm2);
111 }
112 return parts1[i].compareTo(parts2[i]);
113 }
114 if (i < parts1.length) {
115 return isNumber(parts1[i])?1:-1;
116 }
117 if (i < parts2.length) {
118 return isNumber(parts2[i])?-1:1;
119 }
120 return 0;
121 }
122
123 private boolean isNumber(String str) {
124 return str.matches("\\d+");
125 }
126
127 };
128
129 private Map _specialMeanings = null;
130 private boolean _usedefaultspecialmeanings = true;
131
132 public LatestRevisionStrategy() {
133 setComparator(COMPARATOR);
134 setName("latest-revision");
135 }
136
137 public void addConfiguredSpecialMeaning(SpecialMeaning meaning) {
138 meaning.validate();
139 getSpecialMeanings().put(meaning.getName().toLowerCase(), meaning.getValue());
140 }
141
142 public synchronized Map getSpecialMeanings() {
143 if (_specialMeanings == null) {
144 _specialMeanings = new HashMap ();
145 if (isUsedefaultspecialmeanings()) {
146 _specialMeanings.putAll(DEFAULT_SPECIAL_MEANINGS);
147 }
148 }
149 return _specialMeanings;
150 }
151
152 public boolean isUsedefaultspecialmeanings() {
153 return _usedefaultspecialmeanings;
154 }
155
156 public void setUsedefaultspecialmeanings(boolean usedefaultspecialmeanings) {
157 _usedefaultspecialmeanings = usedefaultspecialmeanings;
158 }
159 }
160 |
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