255 lines
8.4 KiB
Java
255 lines
8.4 KiB
Java
/*
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* Copyright (c) 2005, 2011, 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.IOException;
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import java.util.Set;
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import javax.tools.JavaFileObject;
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import java.io.ByteArrayInputStream;
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import java.io.File;
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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 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.Assert;
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import com.sun.tools.javac.util.List;
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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 ZipFileIndexArchive implements Archive {
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private final ZipFileIndex zfIndex;
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private JavacFileManager fileManager;
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public ZipFileIndexArchive(JavacFileManager fileManager, ZipFileIndex zdir) throws IOException {
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super();
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this.fileManager = fileManager;
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this.zfIndex = zdir;
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}
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public boolean contains(RelativePath name) {
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return zfIndex.contains(name);
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}
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public List<String> getFiles(RelativeDirectory subdirectory) {
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return zfIndex.getFiles(subdirectory);
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}
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public JavaFileObject getFileObject(RelativeDirectory subdirectory, String file) {
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RelativeFile fullZipFileName = new RelativeFile(subdirectory, file);
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ZipFileIndex.Entry entry = zfIndex.getZipIndexEntry(fullZipFileName);
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JavaFileObject ret = new ZipFileIndexFileObject(fileManager, zfIndex, entry, zfIndex.getZipFile());
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return ret;
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}
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public Set<RelativeDirectory> getSubdirectories() {
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return zfIndex.getAllDirectories();
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}
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public void close() throws IOException {
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zfIndex.close();
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}
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@Override
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public String toString() {
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return "ZipFileIndexArchive[" + zfIndex + "]";
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}
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/**
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* A subclass of JavaFileObject representing zip entries using the com.sun.tools.javac.file.ZipFileIndex implementation.
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*/
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public static class ZipFileIndexFileObject extends BaseFileObject {
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/** The entry's name.
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*/
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private String name;
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/** The zipfile containing the entry.
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*/
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ZipFileIndex zfIndex;
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/** The underlying zip entry object.
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*/
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ZipFileIndex.Entry entry;
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/** The InputStream for this zip entry (file.)
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*/
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InputStream inputStream = null;
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/** The name of the zip file where this entry resides.
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*/
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File zipName;
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ZipFileIndexFileObject(JavacFileManager fileManager, ZipFileIndex zfIndex, ZipFileIndex.Entry entry, File zipFileName) {
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super(fileManager);
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this.name = entry.getFileName();
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this.zfIndex = zfIndex;
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this.entry = entry;
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this.zipName = zipFileName;
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}
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@Override
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public URI toUri() {
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return createJarUri(zipName, getPrefixedEntryName());
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}
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@Override
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public String getName() {
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return zipName + "(" + getPrefixedEntryName() + ")";
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}
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@Override
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public String getShortName() {
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return zipName.getName() + "(" + entry.getName() + ")";
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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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if (inputStream == null) {
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Assert.checkNonNull(entry); // see constructor
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inputStream = new ByteArrayInputStream(zfIndex.read(entry));
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}
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return inputStream;
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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 = new ByteArrayInputStream(zfIndex.read(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); // save for next time
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if (!ignoreEncodingErrors)
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fileManager.cache(this, cb);
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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.getLastModified();
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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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if (zfIndex.symbolFilePrefix != null) {
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String prefix = zfIndex.symbolFilePrefix.path;
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if (entryName.startsWith(prefix))
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entryName = entryName.substring(prefix.length());
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}
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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(); // null check
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if (k == Kind.OTHER && getKind() != k)
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return false;
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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 ZipFileIndexFileObjects 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 ZipFileIndexFileObject))
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return false;
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ZipFileIndexFileObject o = (ZipFileIndexFileObject) other;
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return zfIndex.getAbsoluteFile().equals(o.zfIndex.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 zfIndex.getAbsoluteFile().hashCode() + name.hashCode();
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}
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private String getPrefixedEntryName() {
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if (zfIndex.symbolFilePrefix != null)
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return zfIndex.symbolFilePrefix.path + entry.getName();
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else
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return entry.getName();
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}
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}
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}
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