/*
* Copyright (c) 2005, 2009, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.tools.javac.file;
import java.io.IOException;
import java.util.Set;
import javax.tools.JavaFileObject;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Writer;
import java.net.URI;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.CharsetDecoder;
import com.sun.tools.javac.file.JavacFileManager.Archive;
import com.sun.tools.javac.file.RelativePath.RelativeDirectory;
import com.sun.tools.javac.file.RelativePath.RelativeFile;
import com.sun.tools.javac.util.List;
/**
* <p><b>This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.</b>
*/
public class ZipFileIndexArchive implements Archive {
private final ZipFileIndex zfIndex;
private JavacFileManager fileManager;
public ZipFileIndexArchive(JavacFileManager fileManager, ZipFileIndex zdir) throws IOException {
super();
this.fileManager = fileManager;
this.zfIndex = zdir;
}
public boolean contains(RelativePath name) {
return zfIndex.contains(name);
}
public List<String> getFiles(RelativeDirectory subdirectory) {
return zfIndex.getFiles(subdirectory);
}
public JavaFileObject getFileObject(RelativeDirectory subdirectory, String file) {
RelativeFile fullZipFileName = new RelativeFile(subdirectory, file);
ZipFileIndex.Entry entry = zfIndex.getZipIndexEntry(fullZipFileName);
JavaFileObject ret = new ZipFileIndexFileObject(fileManager, zfIndex, entry, zfIndex.getZipFile());
return ret;
}
public Set<RelativeDirectory> getSubdirectories() {
return zfIndex.getAllDirectories();
}
public void close() throws IOException {
zfIndex.close();
}
@Override
public String toString() {
return "ZipFileIndexArchive[" + zfIndex + "]";
}
/**
* A subclass of JavaFileObject representing zip entries using the com.sun.tools.javac.file.ZipFileIndex implementation.
*/
public static class ZipFileIndexFileObject extends BaseFileObject {
/** The entry's name.
*/
private String name;
/** The zipfile containing the entry.
*/
ZipFileIndex zfIndex;
/** The underlying zip entry object.
*/
ZipFileIndex.Entry entry;
/** The InputStream for this zip entry (file.)
*/
InputStream inputStream = null;
/** The name of the zip file where this entry resides.
*/
File zipName;
ZipFileIndexFileObject(JavacFileManager fileManager, ZipFileIndex zfIndex, ZipFileIndex.Entry entry, File zipFileName) {
super(fileManager);
this.name = entry.getFileName();
this.zfIndex = zfIndex;
this.entry = entry;
this.zipName = zipFileName;
}
//@Override
public URI toUri() {
return createJarUri(zipName, getPrefixedEntryName());
}
//@Override
public String getName() {
return zipName + "(" + getPrefixedEntryName() + ")";
}
//@Override
public String getShortName() {
return zipName.getName() + "(" + entry.getName() + ")";
}
//@Override
public JavaFileObject.Kind getKind() {
return getKind(entry.getName());
}
//@Override
public InputStream openInputStream() throws IOException {
if (inputStream == null) {
assert entry != null; // see constructor
inputStream = new ByteArrayInputStream(zfIndex.read(entry));
}
return inputStream;
}
//@Override
public OutputStream openOutputStream() throws IOException {
throw new UnsupportedOperationException();
}
//@Override
public CharBuffer getCharContent(boolean ignoreEncodingErrors) throws IOException {
CharBuffer cb = fileManager.getCachedContent(this);
if (cb == null) {
InputStream in = new ByteArrayInputStream(zfIndex.read(entry));
try {
ByteBuffer bb = fileManager.makeByteBuffer(in);
JavaFileObject prev = fileManager.log.useSource(this);
try {
cb = fileManager.decode(bb, ignoreEncodingErrors);
} finally {
fileManager.log.useSource(prev);
}
fileManager.recycleByteBuffer(bb); // save for next time
if (!ignoreEncodingErrors)
fileManager.cache(this, cb);
} finally {
in.close();
}
}
return cb;
}
//@Override
public Writer openWriter() throws IOException {
throw new UnsupportedOperationException();
}
//@Override
public long getLastModified() {
return entry.getLastModified();
}
//@Override
public boolean delete() {
throw new UnsupportedOperationException();
}
//@Override
protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {
return fileManager.getDecoder(fileManager.getEncodingName(), ignoreEncodingErrors);
}
//@Override
protected String inferBinaryName(Iterable<? extends File> path) {
String entryName = entry.getName();
if (zfIndex.symbolFilePrefix != null) {
String prefix = zfIndex.symbolFilePrefix.path;
if (entryName.startsWith(prefix))
entryName = entryName.substring(prefix.length());
}
return removeExtension(entryName).replace('/', '.');
}
//@Override
public boolean isNameCompatible(String cn, JavaFileObject.Kind k) {
cn.getClass(); // null check
if (k == Kind.OTHER && getKind() != k)
return false;
return name.equals(cn + k.extension);
}
/**
* Check if two file objects are equal.
* Two ZipFileIndexFileObjects are equal if the absolute paths of the underlying
* zip files are equal and if the paths within those zip files are equal.
*/
//@Override
public boolean equals(Object other) {
if (this == other)
return true;
if (!(other instanceof ZipFileIndexFileObject))
return false;
ZipFileIndexFileObject o = (ZipFileIndexFileObject) other;
return zfIndex.getAbsoluteFile().equals(o.zfIndex.getAbsoluteFile())
&& name.equals(o.name);
}
//@Override
public int hashCode() {
return zfIndex.getAbsoluteFile().hashCode() + name.hashCode();
}
private String getPrefixedEntryName() {
if (zfIndex.symbolFilePrefix != null)
return zfIndex.symbolFilePrefix.path + entry.getName();
else
return entry.getName();
}
}
}