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19 package org.apache.maven.model.profile.activation;
20
21 import javax.inject.Named;
22 import javax.inject.Singleton;
23
24 import java.util.ArrayList;
25 import java.util.Arrays;
26 import java.util.List;
27
28 import org.apache.maven.model.Activation;
29 import org.apache.maven.model.Profile;
30 import org.apache.maven.model.building.ModelProblem.Severity;
31 import org.apache.maven.model.building.ModelProblem.Version;
32 import org.apache.maven.model.building.ModelProblemCollector;
33 import org.apache.maven.model.building.ModelProblemCollectorRequest;
34 import org.apache.maven.model.profile.ProfileActivationContext;
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41
42 @Named("jdk-version")
43 @Singleton
44 public class JdkVersionProfileActivator implements ProfileActivator {
45
46 @Override
47 public boolean isActive(Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {
48 Activation activation = profile.getActivation();
49
50 if (activation == null) {
51 return false;
52 }
53
54 String jdk = activation.getJdk();
55
56 if (jdk == null) {
57 return false;
58 }
59
60 String version = context.getSystemProperties().get("java.version");
61
62 if (version == null || version.length() <= 0) {
63 problems.add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
64 .setMessage("Failed to determine Java version for profile " + profile.getId())
65 .setLocation(activation.getLocation("jdk")));
66 return false;
67 }
68 return isJavaVersionCompatible(jdk, version);
69 }
70
71 public static boolean isJavaVersionCompatible(String requiredJdkRange, String currentJavaVersion) {
72 if (requiredJdkRange.startsWith("!")) {
73 return !currentJavaVersion.startsWith(requiredJdkRange.substring(1));
74 } else if (isRange(requiredJdkRange)) {
75 return isInRange(currentJavaVersion, getRange(requiredJdkRange));
76 } else {
77 return currentJavaVersion.startsWith(requiredJdkRange);
78 }
79 }
80
81 @Override
82 public boolean presentInConfig(Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {
83 Activation activation = profile.getActivation();
84
85 if (activation == null) {
86 return false;
87 }
88
89 String jdk = activation.getJdk();
90
91 return jdk != null;
92 }
93
94 private static boolean isInRange(String value, List<RangeValue> range) {
95 int leftRelation = getRelationOrder(value, range.get(0), true);
96
97 if (leftRelation == 0) {
98 return true;
99 }
100
101 if (leftRelation < 0) {
102 return false;
103 }
104
105 return getRelationOrder(value, range.get(1), false) <= 0;
106 }
107
108 private static int getRelationOrder(String value, RangeValue rangeValue, boolean isLeft) {
109 if (rangeValue.value.length() <= 0) {
110 return isLeft ? 1 : -1;
111 }
112
113 value = value.replaceAll("[^0-9\\.\\-\\_]", "");
114
115 List<String> valueTokens = new ArrayList<>(Arrays.asList(value.split("[\\.\\-\\_]")));
116 List<String> rangeValueTokens = new ArrayList<>(Arrays.asList(rangeValue.value.split("\\.")));
117
118 addZeroTokens(valueTokens, 3);
119 addZeroTokens(rangeValueTokens, 3);
120
121 for (int i = 0; i < 3; i++) {
122 int x = Integer.parseInt(valueTokens.get(i));
123 int y = Integer.parseInt(rangeValueTokens.get(i));
124 if (x < y) {
125 return -1;
126 } else if (x > y) {
127 return 1;
128 }
129 }
130 if (!rangeValue.closed) {
131 return isLeft ? -1 : 1;
132 }
133 return 0;
134 }
135
136 private static void addZeroTokens(List<String> tokens, int max) {
137 while (tokens.size() < max) {
138 tokens.add("0");
139 }
140 }
141
142 private static boolean isRange(String value) {
143 return value.startsWith("[") || value.startsWith("(");
144 }
145
146 private static List<RangeValue> getRange(String range) {
147 List<RangeValue> ranges = new ArrayList<>();
148
149 for (String token : range.split(",")) {
150 if (token.startsWith("[")) {
151 ranges.add(new RangeValue(token.replace("[", ""), true));
152 } else if (token.startsWith("(")) {
153 ranges.add(new RangeValue(token.replace("(", ""), false));
154 } else if (token.endsWith("]")) {
155 ranges.add(new RangeValue(token.replace("]", ""), true));
156 } else if (token.endsWith(")")) {
157 ranges.add(new RangeValue(token.replace(")", ""), false));
158 } else if (token.length() <= 0) {
159 ranges.add(new RangeValue("", false));
160 }
161 }
162 if (ranges.size() < 2) {
163 ranges.add(new RangeValue("99999999", false));
164 }
165 return ranges;
166 }
167
168 private static class RangeValue {
169 private String value;
170
171 private boolean closed;
172
173 RangeValue(String value, boolean closed) {
174 this.value = value.trim();
175 this.closed = closed;
176 }
177
178 @Override
179 public String toString() {
180 return value;
181 }
182 }
183 }