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1 /* |
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2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.tools.jdeps; |
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27 |
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28 import com.sun.tools.classfile.ClassFile; |
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29 import com.sun.tools.classfile.ConstantPoolException; |
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30 import jdk.internal.misc.SharedSecrets; |
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31 |
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32 import java.util.Map; |
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33 import java.util.concurrent.ConcurrentHashMap; |
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34 import java.util.jar.JarEntry; |
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35 import java.util.jar.JarFile; |
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36 |
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37 public class VersionHelper { |
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38 private static final String META_INF_VERSIONS = "META-INF/versions/"; |
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39 private static final Map<String,String> nameToVersion = new ConcurrentHashMap<>(); |
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40 |
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41 public static String get(String classname) { |
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42 if (nameToVersion.containsKey(classname)) { |
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43 return nameToVersion.get(classname) + "/" + classname; |
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44 } |
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45 return classname; |
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46 } |
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47 |
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48 public static void add(JarFile jarfile, JarEntry e, ClassFile cf) |
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49 throws ConstantPoolException |
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50 { |
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51 String realName = SharedSecrets.javaUtilJarAccess().getRealName(jarfile, e); |
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52 if (realName.startsWith(META_INF_VERSIONS)) { |
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53 int len = META_INF_VERSIONS.length(); |
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54 int n = realName.indexOf('/', len); |
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55 if (n > 0) { |
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56 String version = realName.substring(len, n); |
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57 assert (Integer.parseInt(version) > 8); |
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58 String name = cf.getName().replace('/', '.'); |
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59 if (nameToVersion.containsKey(name)) { |
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60 if (!version.equals(nameToVersion.get(name))) { |
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61 throw new MultiReleaseException( |
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62 "err.multirelease.version.associated", |
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63 name, nameToVersion.get(name), version |
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64 ); |
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65 } |
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66 } else { |
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67 nameToVersion.put(name, version); |
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68 } |
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69 } else { |
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70 throw new MultiReleaseException("err.multirelease.jar.malformed", |
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71 jarfile.getName(), realName); |
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72 } |
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73 } |
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74 } |
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75 } |