289 lines
9.2 KiB
Java
289 lines
9.2 KiB
Java
/*
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* Copyright (c) 2005, 2009, 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.javac.file;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.Writer;
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import java.net.URI;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.CharsetDecoder;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipFile;
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import javax.tools.JavaFileObject;
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import com.sun.tools.javac.file.JavacFileManager.Archive;
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import com.sun.tools.javac.file.RelativePath.RelativeDirectory;
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import com.sun.tools.javac.file.RelativePath.RelativeFile;
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import com.sun.tools.javac.util.List;
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import java.lang.ref.Reference;
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import java.lang.ref.SoftReference;
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/**
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* <p><b>This is NOT part of any supported API.
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* If you write code that depends on this, you do so at your own risk.
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* This code and its internal interfaces are subject to change or
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* deletion without notice.</b>
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*/
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public class ZipArchive implements Archive {
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public ZipArchive(JavacFileManager fm, ZipFile zfile) throws IOException {
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this(fm, zfile, true);
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}
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protected ZipArchive(JavacFileManager fm, ZipFile zfile, boolean initMap) throws IOException {
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this.fileManager = fm;
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this.zfile = zfile;
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this.map = new HashMap<RelativeDirectory,List<String>>();
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if (initMap)
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initMap();
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}
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protected void initMap() throws IOException {
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for (Enumeration<? extends ZipEntry> e = zfile.entries(); e.hasMoreElements(); ) {
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ZipEntry entry;
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try {
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entry = e.nextElement();
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} catch (InternalError ex) {
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IOException io = new IOException();
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io.initCause(ex); // convenience constructors added in Mustang :-(
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throw io;
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}
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addZipEntry(entry);
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}
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}
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void addZipEntry(ZipEntry entry) {
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String name = entry.getName();
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int i = name.lastIndexOf('/');
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RelativeDirectory dirname = new RelativeDirectory(name.substring(0, i+1));
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String basename = name.substring(i+1);
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if (basename.length() == 0)
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return;
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List<String> list = map.get(dirname);
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if (list == null)
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list = List.nil();
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list = list.prepend(basename);
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map.put(dirname, list);
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}
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public boolean contains(RelativePath name) {
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RelativeDirectory dirname = name.dirname();
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String basename = name.basename();
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if (basename.length() == 0)
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return false;
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List<String> list = map.get(dirname);
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return (list != null && list.contains(basename));
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}
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public List<String> getFiles(RelativeDirectory subdirectory) {
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return map.get(subdirectory);
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}
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public JavaFileObject getFileObject(RelativeDirectory subdirectory, String file) {
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ZipEntry ze = new RelativeFile(subdirectory, file).getZipEntry(zfile);
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return new ZipFileObject(this, file, ze);
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}
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public Set<RelativeDirectory> getSubdirectories() {
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return map.keySet();
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}
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public void close() throws IOException {
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zfile.close();
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}
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@Override
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public String toString() {
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return "ZipArchive[" + zfile.getName() + "]";
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}
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private File getAbsoluteFile() {
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File absFile = (absFileRef == null ? null : absFileRef.get());
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if (absFile == null) {
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absFile = new File(zfile.getName()).getAbsoluteFile();
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absFileRef = new SoftReference<File>(absFile);
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}
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return absFile;
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}
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/**
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* The file manager that created this archive.
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*/
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protected JavacFileManager fileManager;
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/**
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* The index for the contents of this archive.
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*/
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protected final Map<RelativeDirectory,List<String>> map;
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/**
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* The zip file for the archive.
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*/
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protected final ZipFile zfile;
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/**
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* A reference to the absolute filename for the zip file for the archive.
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*/
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protected Reference<File> absFileRef;
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/**
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* A subclass of JavaFileObject representing zip entries.
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*/
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public static class ZipFileObject extends BaseFileObject {
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private String name;
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ZipArchive zarch;
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ZipEntry entry;
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protected ZipFileObject(ZipArchive zarch, String name, ZipEntry entry) {
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super(zarch.fileManager);
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this.zarch = zarch;
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this.name = name;
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this.entry = entry;
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}
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public URI toUri() {
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File zipFile = new File(zarch.zfile.getName());
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return createJarUri(zipFile, entry.getName());
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}
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@Override
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public String getName() {
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return zarch.zfile.getName() + "(" + entry.getName() + ")";
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}
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@Override
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public String getShortName() {
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return new File(zarch.zfile.getName()).getName() + "(" + entry + ")";
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}
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@Override
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public JavaFileObject.Kind getKind() {
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return getKind(entry.getName());
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}
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@Override
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public InputStream openInputStream() throws IOException {
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return zarch.zfile.getInputStream(entry);
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}
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@Override
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public OutputStream openOutputStream() throws IOException {
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throw new UnsupportedOperationException();
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}
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@Override
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public CharBuffer getCharContent(boolean ignoreEncodingErrors) throws IOException {
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CharBuffer cb = fileManager.getCachedContent(this);
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if (cb == null) {
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InputStream in = zarch.zfile.getInputStream(entry);
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try {
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ByteBuffer bb = fileManager.makeByteBuffer(in);
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JavaFileObject prev = fileManager.log.useSource(this);
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try {
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cb = fileManager.decode(bb, ignoreEncodingErrors);
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} finally {
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fileManager.log.useSource(prev);
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}
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fileManager.recycleByteBuffer(bb);
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if (!ignoreEncodingErrors) {
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fileManager.cache(this, cb);
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}
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} finally {
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in.close();
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}
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}
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return cb;
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}
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@Override
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public Writer openWriter() throws IOException {
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throw new UnsupportedOperationException();
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}
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@Override
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public long getLastModified() {
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return entry.getTime();
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}
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@Override
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public boolean delete() {
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throw new UnsupportedOperationException();
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}
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@Override
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protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {
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return fileManager.getDecoder(fileManager.getEncodingName(), ignoreEncodingErrors);
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}
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@Override
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protected String inferBinaryName(Iterable<? extends File> path) {
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String entryName = entry.getName();
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return removeExtension(entryName).replace('/', '.');
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}
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@Override
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public boolean isNameCompatible(String cn, JavaFileObject.Kind k) {
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cn.getClass();
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// null check
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if (k == Kind.OTHER && getKind() != k) {
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return false;
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}
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return name.equals(cn + k.extension);
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}
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/**
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* Check if two file objects are equal.
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* Two ZipFileObjects are equal if the absolute paths of the underlying
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* zip files are equal and if the paths within those zip files are equal.
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*/
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@Override
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public boolean equals(Object other) {
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if (this == other)
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return true;
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if (!(other instanceof ZipFileObject))
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return false;
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ZipFileObject o = (ZipFileObject) other;
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return zarch.getAbsoluteFile().equals(o.zarch.getAbsoluteFile())
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&& name.equals(o.name);
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}
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@Override
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public int hashCode() {
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return zarch.getAbsoluteFile().hashCode() + name.hashCode();
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}
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}
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}
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