com.redhat.ceylon.langtools.tools.javac.file.ZipArchive Maven / Gradle / Ivy
/*
* 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.redhat.ceylon.langtools.tools.javac.file;
import java.io.File;
import java.io.IOException;
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 java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import com.redhat.ceylon.javax.tools.JavaFileObject;
import com.redhat.ceylon.langtools.tools.javac.file.JavacFileManager.Archive;
import com.redhat.ceylon.langtools.tools.javac.file.RelativePath.RelativeDirectory;
import com.redhat.ceylon.langtools.tools.javac.file.RelativePath.RelativeFile;
import com.redhat.ceylon.langtools.tools.javac.util.List;
import java.lang.ref.Reference;
import java.lang.ref.SoftReference;
/**
* 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.
*/
public class ZipArchive implements Archive {
public ZipArchive(JavacFileManager fm, ZipFile zfile) throws IOException {
this(fm, zfile, true);
}
protected ZipArchive(JavacFileManager fm, ZipFile zfile, boolean initMap) throws IOException {
this.fileManager = fm;
this.zfile = zfile;
this.map = new HashMap>();
if (initMap)
initMap();
}
protected void initMap() throws IOException {
for (Enumeration e = zfile.entries(); e.hasMoreElements(); ) {
ZipEntry entry;
try {
entry = e.nextElement();
} catch (InternalError ex) {
IOException io = new IOException();
io.initCause(ex); // convenience constructors added in Mustang :-(
throw io;
}
addZipEntry(entry);
}
}
void addZipEntry(ZipEntry entry) {
String name = entry.getName();
int i = name.lastIndexOf('/');
RelativeDirectory dirname = new RelativeDirectory(name.substring(0, i+1));
String basename = name.substring(i+1);
if (basename.length() == 0)
return;
List list = map.get(dirname);
if (list == null)
list = List.nil();
list = list.prepend(basename);
map.put(dirname, list);
}
public boolean contains(RelativePath name) {
RelativeDirectory dirname = name.dirname();
String basename = name.basename();
if (basename.length() == 0)
return false;
List list = map.get(dirname);
return (list != null && list.contains(basename));
}
public List getFiles(RelativeDirectory subdirectory) {
return map.get(subdirectory);
}
public JavaFileObject getFileObject(RelativeDirectory subdirectory, String file) {
ZipEntry ze = new RelativeFile(subdirectory, file).getZipEntry(zfile);
return new ZipFileObject(this, file, ze);
}
public Set getSubdirectories() {
return map.keySet();
}
public void close() throws IOException {
zfile.close();
}
@Override
public String toString() {
return "ZipArchive[" + zfile.getName() + "]";
}
private File getAbsoluteFile() {
File absFile = (absFileRef == null ? null : absFileRef.get());
if (absFile == null) {
absFile = new File(zfile.getName()).getAbsoluteFile();
absFileRef = new SoftReference(absFile);
}
return absFile;
}
/**
* The file manager that created this archive.
*/
protected JavacFileManager fileManager;
/**
* The index for the contents of this archive.
*/
protected final Map> map;
/**
* The zip file for the archive.
*/
protected final ZipFile zfile;
/**
* A reference to the absolute filename for the zip file for the archive.
*/
protected Reference absFileRef;
/**
* A subclass of JavaFileObject representing zip entries.
*/
public static class ZipFileObject extends BaseFileObject {
private String name;
ZipArchive zarch;
ZipEntry entry;
protected ZipFileObject(ZipArchive zarch, String name, ZipEntry entry) {
super(zarch.fileManager);
this.zarch = zarch;
this.name = name;
this.entry = entry;
}
public URI toUri() {
File zipFile = new File(zarch.zfile.getName());
return createJarUri(zipFile, entry.getName());
}
@Override
public String getName() {
return zarch.zfile.getName() + "(" + entry.getName() + ")";
}
@Override
public String getShortName() {
return new File(zarch.zfile.getName()).getName() + "(" + entry + ")";
}
@Override
public JavaFileObject.Kind getKind() {
return getKind(entry.getName());
}
@Override
public InputStream openInputStream() throws IOException {
return zarch.zfile.getInputStream(entry);
}
@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 = zarch.zfile.getInputStream(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);
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.getTime();
}
@Override
public boolean delete() {
throw new UnsupportedOperationException();
}
@Override
protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {
return fileManager.getDecoder(fileManager.getEncodingName(), ignoreEncodingErrors);
}
@Override
protected String inferBinaryName(Iterable path) {
String entryName = entry.getName();
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 ZipFileObjects 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 ZipFileObject))
return false;
ZipFileObject o = (ZipFileObject) other;
return zarch.getAbsoluteFile().equals(o.zarch.getAbsoluteFile())
&& name.equals(o.name);
}
@Override
public int hashCode() {
return zarch.getAbsoluteFile().hashCode() + name.hashCode();
}
}
}