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annotate graal/com.oracle.jvmci.options.processor/src/com/oracle/jvmci/options/processor/GraalJars.java @ 21562:47bebae7454f

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Merge.
author Doug Simon <doug.simon@oracle.com>
date Thu, 28 May 2015 21:58:33 +0200
parents graal/com.oracle.graal.options.processor/src/com/oracle/graal/options/processor/GraalJars.java@28cbfacd0518
children
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1 /*
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2 * Copyright (c) 2015, 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.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.jvmci.options.processor;
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24
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25 import java.io.*;
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26 import java.util.*;
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27 import java.util.stream.*;
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28 import java.util.zip.*;
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29
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30 public class GraalJars implements Iterable<ZipEntry> {
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31 private final List<ZipFile> jars = new ArrayList<>(2);
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32
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33 public GraalJars() {
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34 String classPath = System.getProperty("java.class.path");
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35 for (String e : classPath.split(File.pathSeparator)) {
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36 if (e.endsWith(File.separatorChar + "graal.jar") || e.endsWith(File.separatorChar + "graal-truffle.jar")) {
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37 try {
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38 jars.add(new ZipFile(e));
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39 } catch (IOException ioe) {
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40 throw new InternalError(ioe);
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41 }
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42 }
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43 }
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44 if (jars.size() != 2) {
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45 throw new InternalError("Could not find graal.jar or graal-truffle.jar on class path: " + classPath);
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46 }
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47 }
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48
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49 public Iterator<ZipEntry> iterator() {
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50 Stream<ZipEntry> entries = jars.stream().flatMap(ZipFile::stream);
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51 return entries.iterator();
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52 }
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53
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54 public InputStream getInputStream(String classFilePath) throws IOException {
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55 for (ZipFile jar : jars) {
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56 ZipEntry entry = jar.getEntry(classFilePath);
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57 if (entry != null) {
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58 return jar.getInputStream(entry);
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59 }
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60 }
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61 return null;
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62 }
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63 }