author | mcimadamore |
Fri, 16 Dec 2016 15:27:34 +0000 | |
changeset 42827 | 36468b5fa7f4 |
parent 42407 | f3702cff2933 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.tools.jdeps; |
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import com.sun.tools.classfile.AccessFlags; |
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import com.sun.tools.classfile.ClassFile; |
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import com.sun.tools.classfile.ConstantPoolException; |
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import com.sun.tools.classfile.Dependencies.ClassFileError; |
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import jdk.internal.util.jar.VersionedStream; |
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import java.io.Closeable; |
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import java.io.File; |
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import java.io.FileNotFoundException; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.UncheckedIOException; |
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import java.nio.file.FileSystem; |
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import java.nio.file.FileSystems; |
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import java.nio.file.Files; |
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import java.nio.file.Path; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.Enumeration; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.NoSuchElementException; |
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import java.util.Set; |
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import java.util.jar.JarEntry; |
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import java.util.jar.JarFile; |
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import java.util.stream.Collectors; |
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import java.util.stream.Stream; |
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import java.util.zip.ZipFile; |
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/** |
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* ClassFileReader reads ClassFile(s) of a given path that can be |
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* a .class file, a directory, or a JAR file. |
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*/ |
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public class ClassFileReader implements Closeable { |
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/** |
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* Returns a ClassFileReader instance of a given path. |
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*/ |
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public static ClassFileReader newInstance(Path path) throws IOException { |
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return newInstance(path, null); |
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} |
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/** |
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* Returns a ClassFileReader instance of a given path. |
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*/ |
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public static ClassFileReader newInstance(Path path, Runtime.Version version) throws IOException { |
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if (Files.notExists(path)) { |
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throw new FileNotFoundException(path.toString()); |
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} |
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if (Files.isDirectory(path)) { |
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return new DirectoryReader(path); |
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} else if (path.getFileName().toString().endsWith(".jar")) { |
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return new JarFileReader(path, version); |
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} else { |
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return new ClassFileReader(path); |
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} |
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} |
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/** |
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* Returns a ClassFileReader instance of a given FileSystem and path. |
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* |
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* This method is used for reading classes from jrtfs. |
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*/ |
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public static ClassFileReader newInstance(FileSystem fs, Path path) throws IOException { |
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return new DirectoryReader(fs, path); |
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} |
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protected final Path path; |
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protected final String baseFileName; |
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protected Set<String> entries; // binary names |
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protected final List<String> skippedEntries = new ArrayList<>(); |
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protected ClassFileReader(Path path) { |
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this.path = path; |
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this.baseFileName = path.getFileName() != null |
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? path.getFileName().toString() |
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: path.toString(); |
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} |
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public String getFileName() { |
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return baseFileName; |
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} |
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public List<String> skippedEntries() { |
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return skippedEntries; |
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} |
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/** |
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* Returns all entries in this archive. |
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*/ |
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public Set<String> entries() { |
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Set<String> es = this.entries; |
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if (es == null) { |
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// lazily scan the entries |
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this.entries = scan(); |
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} |
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return this.entries; |
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} |
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/** |
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* Returns the ClassFile matching the given binary name |
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* or a fully-qualified class name. |
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*/ |
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public ClassFile getClassFile(String name) throws IOException { |
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if (name.indexOf('.') > 0) { |
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int i = name.lastIndexOf('.'); |
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String pathname = name.replace('.', File.separatorChar) + ".class"; |
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if (baseFileName.equals(pathname) || |
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baseFileName.equals(pathname.substring(0, i) + "$" + |
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pathname.substring(i+1, pathname.length()))) { |
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return readClassFile(path); |
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} |
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} else { |
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if (baseFileName.equals(name.replace('/', File.separatorChar) + ".class")) { |
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return readClassFile(path); |
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} |
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} |
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return null; |
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} |
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public Iterable<ClassFile> getClassFiles() throws IOException { |
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return FileIterator::new; |
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} |
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protected ClassFile readClassFile(Path p) throws IOException { |
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InputStream is = null; |
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try { |
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is = Files.newInputStream(p); |
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return ClassFile.read(is); |
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} catch (ConstantPoolException e) { |
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throw new ClassFileError(e); |
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} finally { |
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if (is != null) { |
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is.close(); |
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} |
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} |
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} |
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166 |
|
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protected Set<String> scan() { |
168 |
try { |
|
169 |
ClassFile cf = ClassFile.read(path); |
|
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String name = cf.access_flags.is(AccessFlags.ACC_MODULE) |
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? "module-info" : cf.getName(); |
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return Collections.singleton(name); |
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} catch (ConstantPoolException|IOException e) { |
174 |
throw new ClassFileError(e); |
|
175 |
} |
|
176 |
} |
|
177 |
||
178 |
static boolean isClass(Path file) { |
|
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String fn = file.getFileName().toString(); |
|
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return fn.endsWith(".class"); |
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} |
182 |
||
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@Override |
184 |
public void close() throws IOException { |
|
185 |
} |
|
186 |
||
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class FileIterator implements Iterator<ClassFile> { |
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int count; |
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FileIterator() { |
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this.count = 0; |
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} |
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public boolean hasNext() { |
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return count == 0 && baseFileName.endsWith(".class"); |
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} |
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195 |
|
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public ClassFile next() { |
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if (!hasNext()) { |
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throw new NoSuchElementException(); |
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} |
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try { |
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ClassFile cf = readClassFile(path); |
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count++; |
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return cf; |
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} catch (IOException e) { |
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throw new ClassFileError(e); |
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} |
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} |
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208 |
|
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public void remove() { |
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throw new UnsupportedOperationException("Not supported yet."); |
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211 |
} |
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} |
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213 |
|
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public String toString() { |
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return path.toString(); |
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216 |
} |
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217 |
|
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private static class DirectoryReader extends ClassFileReader { |
27579 | 219 |
protected final String fsSep; |
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DirectoryReader(Path path) throws IOException { |
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this(FileSystems.getDefault(), path); |
222 |
} |
|
223 |
DirectoryReader(FileSystem fs, Path path) throws IOException { |
|
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super(path); |
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this.fsSep = fs.getSeparator(); |
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} |
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227 |
|
36526 | 228 |
protected Set<String> scan() { |
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229 |
try (Stream<Path> stream = Files.walk(path, Integer.MAX_VALUE)) { |
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return stream.filter(ClassFileReader::isClass) |
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.map(path::relativize) |
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.map(Path::toString) |
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.map(p -> p.replace(File.separatorChar, '/')) |
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.collect(Collectors.toSet()); |
36526 | 235 |
} catch (IOException e) { |
236 |
throw new UncheckedIOException(e); |
|
237 |
} |
|
238 |
} |
|
239 |
||
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public ClassFile getClassFile(String name) throws IOException { |
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|
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if (name.indexOf('.') > 0) { |
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|
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int i = name.lastIndexOf('.'); |
27579 | 243 |
String pathname = name.replace(".", fsSep) + ".class"; |
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Path p = path.resolve(pathname); |
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if (Files.notExists(p)) { |
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p = path.resolve(pathname.substring(0, i) + "$" + |
27579 | 247 |
pathname.substring(i+1, pathname.length())); |
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} |
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249 |
if (Files.exists(p)) { |
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250 |
return readClassFile(p); |
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251 |
} |
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252 |
} else { |
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253 |
Path p = path.resolve(name + ".class"); |
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|
254 |
if (Files.exists(p)) { |
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|
255 |
return readClassFile(p); |
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|
256 |
} |
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|
257 |
} |
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|
258 |
return null; |
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|
259 |
} |
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|
260 |
|
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|
261 |
public Iterable<ClassFile> getClassFiles() throws IOException { |
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|
262 |
final Iterator<ClassFile> iter = new DirectoryIterator(); |
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|
263 |
return () -> iter; |
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|
264 |
} |
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|
265 |
|
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|
266 |
class DirectoryIterator implements Iterator<ClassFile> { |
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|
267 |
private final List<Path> entries; |
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268 |
private int index = 0; |
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|
269 |
DirectoryIterator() throws IOException { |
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|
270 |
List<Path> paths = null; |
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|
271 |
try (Stream<Path> stream = Files.walk(path, Integer.MAX_VALUE)) { |
58cf7e51c16d
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|
272 |
paths = stream.filter(ClassFileReader::isClass) |
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|
273 |
.collect(Collectors.toList()); |
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|
274 |
} |
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|
275 |
this.entries = paths; |
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|
276 |
this.index = 0; |
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277 |
} |
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|
278 |
|
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|
279 |
public boolean hasNext() { |
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|
280 |
return index != entries.size(); |
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|
281 |
} |
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|
282 |
|
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|
283 |
public ClassFile next() { |
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|
284 |
if (!hasNext()) { |
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|
285 |
throw new NoSuchElementException(); |
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|
286 |
} |
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|
287 |
Path path = entries.get(index++); |
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|
288 |
try { |
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|
289 |
return readClassFile(path); |
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|
290 |
} catch (IOException e) { |
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|
291 |
throw new ClassFileError(e); |
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|
292 |
} |
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|
293 |
} |
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|
294 |
|
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295 |
public void remove() { |
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|
296 |
throw new UnsupportedOperationException("Not supported yet."); |
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|
297 |
} |
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|
298 |
} |
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|
299 |
} |
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|
300 |
|
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|
301 |
static class JarFileReader extends ClassFileReader { |
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302 |
private final JarFile jarfile; |
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|
303 |
private final Runtime.Version version; |
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|
304 |
|
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|
305 |
JarFileReader(Path path, Runtime.Version version) throws IOException { |
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|
306 |
this(path, openJarFile(path.toFile(), version), version); |
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307 |
} |
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|
308 |
|
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309 |
JarFileReader(Path path, JarFile jf, Runtime.Version version) throws IOException { |
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310 |
super(path); |
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311 |
this.jarfile = jf; |
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312 |
this.version = version; |
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313 |
} |
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|
314 |
|
38530 | 315 |
@Override |
316 |
public void close() throws IOException { |
|
317 |
jarfile.close(); |
|
318 |
} |
|
319 |
||
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|
320 |
private static JarFile openJarFile(File f, Runtime.Version version) |
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|
321 |
throws IOException { |
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|
322 |
JarFile jf; |
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|
323 |
if (version == null) { |
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|
324 |
jf = new JarFile(f, false); |
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if (jf.isMultiRelease()) { |
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throw new MultiReleaseException("err.multirelease.option.notfound", f.getName()); |
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327 |
} |
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328 |
} else { |
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jf = new JarFile(f, false, ZipFile.OPEN_READ, version); |
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if (!jf.isMultiRelease()) { |
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throw new MultiReleaseException("err.multirelease.option.exists", f.getName()); |
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332 |
} |
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333 |
} |
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334 |
return jf; |
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335 |
} |
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336 |
|
36526 | 337 |
protected Set<String> scan() { |
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338 |
try (JarFile jf = openJarFile(path.toFile(), version)) { |
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339 |
return VersionedStream.stream(jf).map(JarEntry::getName) |
38524 | 340 |
.filter(n -> n.endsWith(".class")) |
36526 | 341 |
.collect(Collectors.toSet()); |
342 |
} catch (IOException e) { |
|
343 |
throw new UncheckedIOException(e); |
|
344 |
} |
|
345 |
} |
|
346 |
||
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public ClassFile getClassFile(String name) throws IOException { |
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348 |
if (name.indexOf('.') > 0) { |
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349 |
int i = name.lastIndexOf('.'); |
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String entryName = name.replace('.', '/') + ".class"; |
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JarEntry e = jarfile.getJarEntry(entryName); |
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352 |
if (e == null) { |
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353 |
e = jarfile.getJarEntry(entryName.substring(0, i) + "$" |
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354 |
+ entryName.substring(i + 1, entryName.length())); |
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355 |
} |
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|
356 |
if (e != null) { |
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|
357 |
return readClassFile(jarfile, e); |
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358 |
} |
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359 |
} else { |
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360 |
JarEntry e = jarfile.getJarEntry(name + ".class"); |
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|
361 |
if (e != null) { |
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362 |
return readClassFile(jarfile, e); |
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363 |
} |
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|
364 |
} |
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|
365 |
return null; |
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|
366 |
} |
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367 |
|
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368 |
protected ClassFile readClassFile(JarFile jarfile, JarEntry e) throws IOException { |
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369 |
try (InputStream is = jarfile.getInputStream(e)) { |
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370 |
ClassFile cf = ClassFile.read(is); |
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|
371 |
if (jarfile.isMultiRelease()) { |
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|
372 |
VersionHelper.add(jarfile, e, cf); |
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|
373 |
} |
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|
374 |
return cf; |
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|
375 |
} catch (ConstantPoolException ex) { |
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|
376 |
throw new ClassFileError(ex); |
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|
377 |
} |
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|
378 |
} |
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|
379 |
|
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|
380 |
public Iterable<ClassFile> getClassFiles() throws IOException { |
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|
381 |
final Iterator<ClassFile> iter = new JarFileIterator(this, jarfile); |
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|
382 |
return () -> iter; |
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383 |
} |
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|
384 |
} |
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|
385 |
|
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|
386 |
Enumeration<JarEntry> versionedEntries(JarFile jf) { |
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|
387 |
Iterator<JarEntry> it = VersionedStream.stream(jf).iterator(); |
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|
388 |
return new Enumeration<>() { |
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|
389 |
@Override |
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|
390 |
public boolean hasMoreElements() { |
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|
391 |
return it.hasNext(); |
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|
392 |
} |
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|
393 |
|
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|
394 |
@Override |
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|
395 |
public JarEntry nextElement() { |
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|
396 |
return it.next(); |
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|
397 |
} |
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|
398 |
}; |
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|
399 |
} |
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|
400 |
|
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|
401 |
class JarFileIterator implements Iterator<ClassFile> { |
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|
402 |
protected final JarFileReader reader; |
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|
403 |
protected Enumeration<JarEntry> entries; |
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|
404 |
protected JarFile jf; |
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|
405 |
protected JarEntry nextEntry; |
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|
406 |
protected ClassFile cf; |
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|
407 |
JarFileIterator(JarFileReader reader) { |
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|
408 |
this(reader, null); |
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|
409 |
} |
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|
410 |
JarFileIterator(JarFileReader reader, JarFile jarfile) { |
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|
411 |
this.reader = reader; |
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|
412 |
setJarFile(jarfile); |
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|
413 |
} |
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changeset
|
414 |
|
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|
415 |
void setJarFile(JarFile jarfile) { |
755ff386d1ac
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|
416 |
if (jarfile == null) return; |
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|
417 |
|
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|
418 |
this.jf = jarfile; |
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|
419 |
this.entries = versionedEntries(jf); |
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|
420 |
this.nextEntry = nextEntry(); |
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|
421 |
} |
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|
422 |
|
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|
423 |
public boolean hasNext() { |
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|
424 |
if (nextEntry != null && cf != null) { |
755ff386d1ac
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|
425 |
return true; |
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|
426 |
} |
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changeset
|
427 |
while (nextEntry != null) { |
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|
428 |
try { |
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|
429 |
cf = reader.readClassFile(jf, nextEntry); |
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|
430 |
return true; |
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|
431 |
} catch (ClassFileError | IOException ex) { |
41443
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diff
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|
432 |
skippedEntries.add(String.format("%s: %s (%s)", |
6398801363f2
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|
433 |
ex.getMessage(), |
6398801363f2
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changeset
|
434 |
nextEntry.getName(), |
6398801363f2
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changeset
|
435 |
jf.getName())); |
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|
436 |
} |
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changeset
|
437 |
nextEntry = nextEntry(); |
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changeset
|
438 |
} |
755ff386d1ac
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changeset
|
439 |
return false; |
755ff386d1ac
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diff
changeset
|
440 |
} |
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changeset
|
441 |
|
755ff386d1ac
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changeset
|
442 |
public ClassFile next() { |
755ff386d1ac
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changeset
|
443 |
if (!hasNext()) { |
755ff386d1ac
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|
444 |
throw new NoSuchElementException(); |
755ff386d1ac
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changeset
|
445 |
} |
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changeset
|
446 |
ClassFile classFile = cf; |
755ff386d1ac
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|
447 |
cf = null; |
755ff386d1ac
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|
448 |
nextEntry = nextEntry(); |
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changeset
|
449 |
return classFile; |
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changeset
|
450 |
} |
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changeset
|
451 |
|
755ff386d1ac
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changeset
|
452 |
protected JarEntry nextEntry() { |
755ff386d1ac
8029548: (jdeps) use @jdk.Exported to determine supported vs JDK internal API
mchung
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changeset
|
453 |
while (entries.hasMoreElements()) { |
755ff386d1ac
8029548: (jdeps) use @jdk.Exported to determine supported vs JDK internal API
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changeset
|
454 |
JarEntry e = entries.nextElement(); |
755ff386d1ac
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changeset
|
455 |
String name = e.getName(); |
38524 | 456 |
if (name.endsWith(".class")) { |
25442
755ff386d1ac
8029548: (jdeps) use @jdk.Exported to determine supported vs JDK internal API
mchung
parents:
22449
diff
changeset
|
457 |
return e; |
15030
2d8dec41f029
8003562: Provide a CLI tool to analyze class dependencies
mchung
parents:
diff
changeset
|
458 |
} |
2d8dec41f029
8003562: Provide a CLI tool to analyze class dependencies
mchung
parents:
diff
changeset
|
459 |
} |
25442
755ff386d1ac
8029548: (jdeps) use @jdk.Exported to determine supported vs JDK internal API
mchung
parents:
22449
diff
changeset
|
460 |
return null; |
755ff386d1ac
8029548: (jdeps) use @jdk.Exported to determine supported vs JDK internal API
mchung
parents:
22449
diff
changeset
|
461 |
} |
15030
2d8dec41f029
8003562: Provide a CLI tool to analyze class dependencies
mchung
parents:
diff
changeset
|
462 |
|
25442
755ff386d1ac
8029548: (jdeps) use @jdk.Exported to determine supported vs JDK internal API
mchung
parents:
22449
diff
changeset
|
463 |
public void remove() { |
755ff386d1ac
8029548: (jdeps) use @jdk.Exported to determine supported vs JDK internal API
mchung
parents:
22449
diff
changeset
|
464 |
throw new UnsupportedOperationException("Not supported yet."); |
15030
2d8dec41f029
8003562: Provide a CLI tool to analyze class dependencies
mchung
parents:
diff
changeset
|
465 |
} |
2d8dec41f029
8003562: Provide a CLI tool to analyze class dependencies
mchung
parents:
diff
changeset
|
466 |
} |
36526 | 467 |
private static final String MODULE_INFO = "module-info.class"; |
15030
2d8dec41f029
8003562: Provide a CLI tool to analyze class dependencies
mchung
parents:
diff
changeset
|
468 |
} |