author | jjg |
Mon, 29 Nov 2010 14:15:36 -0800 | |
changeset 7335 | 8b390fd27190 |
parent 6722 | 7a6305ae0721 |
child 7681 | 1f0819a3341f |
child 7841 | b022f7b78342 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 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.nio; |
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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.net.MalformedURLException; |
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import java.net.URL; |
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import java.nio.charset.Charset; |
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import java.nio.file.Files; |
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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.FileVisitOption; |
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import java.nio.file.FileVisitResult; |
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import java.nio.file.Path; |
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import java.nio.file.SimpleFileVisitor; |
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import java.nio.file.attribute.Attributes; |
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import java.nio.file.attribute.BasicFileAttributes; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.EnumSet; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.LinkedHashSet; |
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import java.util.Map; |
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import java.util.Set; |
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import javax.lang.model.SourceVersion; |
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import javax.tools.FileObject; |
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import javax.tools.JavaFileManager; |
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import javax.tools.JavaFileObject; |
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import javax.tools.JavaFileObject.Kind; |
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import javax.tools.StandardLocation; |
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import static java.nio.file.FileVisitOption.*; |
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import static javax.tools.StandardLocation.*; |
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import com.sun.tools.javac.file.Paths; |
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import com.sun.tools.javac.util.BaseFileManager; |
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import com.sun.tools.javac.util.Context; |
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import com.sun.tools.javac.util.List; |
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import com.sun.tools.javac.util.ListBuffer; |
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import static com.sun.tools.javac.main.OptionName.*; |
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// NOTE the imports carefully for this compilation unit. |
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// |
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// Path: java.nio.file.Path -- the new NIO type for which this file manager exists |
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// |
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// Paths: com.sun.tools.javac.file.Paths -- legacy javac type for handling path options |
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// The other Paths (java.nio.file.Paths) is not used |
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// NOTE this and related classes depend on new API in JDK 7. |
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// This requires special handling while bootstrapping the JDK build, |
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// when these classes might not yet have been compiled. To workaround |
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// this, the build arranges to make stubs of these classes available |
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// when compiling this and related classes. The set of stub files |
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// is specified in make/build.properties. |
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/** |
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* Implementation of PathFileManager: a JavaFileManager based on the use |
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* of java.nio.file.Path. |
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* |
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* <p>Just as a Path is somewhat analagous to a File, so too is this |
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* JavacPathFileManager analogous to JavacFileManager, as it relates to the |
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* support of FileObjects based on File objects (i.e. just RegularFileObject, |
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* not ZipFileObject and its variants.) |
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* |
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* <p>The default values for the standard locations supported by this file |
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* manager are the same as the default values provided by JavacFileManager -- |
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* i.e. as determined by the javac.file.Paths class. To override these values, |
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* call {@link #setLocation}. |
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* |
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* <p>To reduce confusion with Path objects, the locations such as "class path", |
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* "source path", etc, are generically referred to here as "search paths". |
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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 JavacPathFileManager extends BaseFileManager implements PathFileManager { |
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protected FileSystem defaultFileSystem; |
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/** |
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* Create a JavacPathFileManager using a given context, optionally registering |
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* it as the JavaFileManager for that context. |
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*/ |
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public JavacPathFileManager(Context context, boolean register, Charset charset) { |
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super(charset); |
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if (register) |
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context.put(JavaFileManager.class, this); |
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pathsForLocation = new HashMap<Location, PathsForLocation>(); |
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fileSystems = new HashMap<Path,FileSystem>(); |
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setContext(context); |
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} |
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/** |
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* Set the context for JavacPathFileManager. |
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*/ |
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@Override |
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protected void setContext(Context context) { |
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super.setContext(context); |
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searchPaths = Paths.instance(context); |
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} |
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@Override |
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public FileSystem getDefaultFileSystem() { |
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if (defaultFileSystem == null) |
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defaultFileSystem = FileSystems.getDefault(); |
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return defaultFileSystem; |
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} |
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@Override |
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public void setDefaultFileSystem(FileSystem fs) { |
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defaultFileSystem = fs; |
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} |
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@Override |
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public void flush() throws IOException { |
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contentCache.clear(); |
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} |
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@Override |
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public void close() throws IOException { |
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for (FileSystem fs: fileSystems.values()) |
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fs.close(); |
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} |
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@Override |
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public ClassLoader getClassLoader(Location location) { |
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nullCheck(location); |
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Iterable<? extends Path> path = getLocation(location); |
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if (path == null) |
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return null; |
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ListBuffer<URL> lb = new ListBuffer<URL>(); |
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for (Path p: path) { |
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try { |
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lb.append(p.toUri().toURL()); |
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} catch (MalformedURLException e) { |
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throw new AssertionError(e); |
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} |
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} |
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return getClassLoader(lb.toArray(new URL[lb.size()])); |
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} |
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@Override |
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public boolean isDefaultBootClassPath() { |
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return searchPaths.isDefaultBootClassPath(); |
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} |
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// <editor-fold defaultstate="collapsed" desc="Location handling"> |
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public boolean hasLocation(Location location) { |
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return (getLocation(location) != null); |
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} |
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public Iterable<? extends Path> getLocation(Location location) { |
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nullCheck(location); |
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lazyInitSearchPaths(); |
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PathsForLocation path = pathsForLocation.get(location); |
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if (path == null && !pathsForLocation.containsKey(location)) { |
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setDefaultForLocation(location); |
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path = pathsForLocation.get(location); |
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} |
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return path; |
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} |
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private Path getOutputLocation(Location location) { |
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Iterable<? extends Path> paths = getLocation(location); |
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return (paths == null ? null : paths.iterator().next()); |
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} |
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public void setLocation(Location location, Iterable<? extends Path> searchPath) |
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throws IOException |
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{ |
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nullCheck(location); |
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lazyInitSearchPaths(); |
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if (searchPath == null) { |
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setDefaultForLocation(location); |
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} else { |
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if (location.isOutputLocation()) |
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checkOutputPath(searchPath); |
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PathsForLocation pl = new PathsForLocation(); |
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for (Path p: searchPath) |
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pl.add(p); // TODO -Xlint:path warn if path not found |
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pathsForLocation.put(location, pl); |
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} |
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} |
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private void checkOutputPath(Iterable<? extends Path> searchPath) throws IOException { |
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Iterator<? extends Path> pathIter = searchPath.iterator(); |
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if (!pathIter.hasNext()) |
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throw new IllegalArgumentException("empty path for directory"); |
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Path path = pathIter.next(); |
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if (pathIter.hasNext()) |
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throw new IllegalArgumentException("path too long for directory"); |
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if (!path.exists()) |
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throw new FileNotFoundException(path + ": does not exist"); |
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else if (!isDirectory(path)) |
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throw new IOException(path + ": not a directory"); |
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} |
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private void setDefaultForLocation(Location locn) { |
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Collection<File> files = null; |
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if (locn instanceof StandardLocation) { |
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switch ((StandardLocation) locn) { |
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case CLASS_PATH: |
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files = searchPaths.userClassPath(); |
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break; |
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case PLATFORM_CLASS_PATH: |
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files = searchPaths.bootClassPath(); |
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break; |
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case SOURCE_PATH: |
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files = searchPaths.sourcePath(); |
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break; |
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case CLASS_OUTPUT: { |
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String arg = options.get(D); |
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files = (arg == null ? null : Collections.singleton(new File(arg))); |
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break; |
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} |
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case SOURCE_OUTPUT: { |
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String arg = options.get(S); |
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files = (arg == null ? null : Collections.singleton(new File(arg))); |
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break; |
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} |
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} |
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} |
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PathsForLocation pl = new PathsForLocation(); |
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if (files != null) { |
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for (File f: files) |
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pl.add(f.toPath()); |
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} |
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pathsForLocation.put(locn, pl); |
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} |
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private void lazyInitSearchPaths() { |
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if (!inited) { |
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setDefaultForLocation(PLATFORM_CLASS_PATH); |
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setDefaultForLocation(CLASS_PATH); |
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setDefaultForLocation(SOURCE_PATH); |
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inited = true; |
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} |
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} |
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// where |
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private boolean inited = false; |
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private Map<Location, PathsForLocation> pathsForLocation; |
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private Paths searchPaths; |
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private static class PathsForLocation extends LinkedHashSet<Path> { |
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private static final long serialVersionUID = 6788510222394486733L; |
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} |
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// </editor-fold> |
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// <editor-fold defaultstate="collapsed" desc="FileObject handling"> |
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@Override |
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public Path getPath(FileObject fo) { |
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nullCheck(fo); |
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if (!(fo instanceof PathFileObject)) |
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throw new IllegalArgumentException(); |
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return ((PathFileObject) fo).getPath(); |
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} |
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@Override |
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public boolean isSameFile(FileObject a, FileObject b) { |
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nullCheck(a); |
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nullCheck(b); |
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if (!(a instanceof PathFileObject)) |
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throw new IllegalArgumentException("Not supported: " + a); |
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if (!(b instanceof PathFileObject)) |
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throw new IllegalArgumentException("Not supported: " + b); |
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return ((PathFileObject) a).isSameFile((PathFileObject) b); |
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} |
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@Override |
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public Iterable<JavaFileObject> list(Location location, |
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String packageName, Set<Kind> kinds, boolean recurse) |
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throws IOException { |
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// validatePackageName(packageName); |
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nullCheck(packageName); |
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nullCheck(kinds); |
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Iterable<? extends Path> paths = getLocation(location); |
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if (paths == null) |
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return List.nil(); |
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ListBuffer<JavaFileObject> results = new ListBuffer<JavaFileObject>(); |
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for (Path path : paths) |
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list(path, packageName, kinds, recurse, results); |
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return results.toList(); |
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} |
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private void list(Path path, String packageName, final Set<Kind> kinds, |
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boolean recurse, final ListBuffer<JavaFileObject> results) |
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throws IOException { |
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if (!path.exists()) |
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return; |
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final Path pathDir; |
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if (isDirectory(path)) |
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pathDir = path; |
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else { |
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FileSystem fs = getFileSystem(path); |
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if (fs == null) |
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return; |
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pathDir = fs.getRootDirectories().iterator().next(); |
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} |
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String sep = path.getFileSystem().getSeparator(); |
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Path packageDir = packageName.isEmpty() ? pathDir |
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: pathDir.resolve(packageName.replace(".", sep)); |
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if (!packageDir.exists()) |
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return; |
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/* Alternate impl of list, superceded by use of Files.walkFileTree */ |
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// Deque<Path> queue = new LinkedList<Path>(); |
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// queue.add(packageDir); |
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// |
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// Path dir; |
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// while ((dir = queue.poll()) != null) { |
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// DirectoryStream<Path> ds = dir.newDirectoryStream(); |
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// try { |
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// for (Path p: ds) { |
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356 |
// String name = p.getName().toString(); |
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// if (isDirectory(p)) { |
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// if (recurse && SourceVersion.isIdentifier(name)) { |
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// queue.add(p); |
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360 |
// } |
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// } else { |
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// if (kinds.contains(getKind(name))) { |
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// JavaFileObject fe = |
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364 |
// PathFileObject.createDirectoryPathFileObject(this, p, pathDir); |
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// results.append(fe); |
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366 |
// } |
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367 |
// } |
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368 |
// } |
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369 |
// } finally { |
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370 |
// ds.close(); |
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371 |
// } |
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372 |
// } |
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373 |
int maxDepth = (recurse ? Integer.MAX_VALUE : 1); |
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Set<FileVisitOption> opts = EnumSet.of(FOLLOW_LINKS); |
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Files.walkFileTree(packageDir, opts, maxDepth, |
376 |
new SimpleFileVisitor<Path>() { |
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377 |
@Override |
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public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) { |
4548 | 379 |
if (SourceVersion.isIdentifier(dir.getName().toString())) // JSR 292? |
380 |
return FileVisitResult.CONTINUE; |
|
381 |
else |
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382 |
return FileVisitResult.SKIP_SUBTREE; |
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383 |
} |
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384 |
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385 |
@Override |
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386 |
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) { |
|
387 |
if (attrs.isRegularFile() && kinds.contains(getKind(file.getName().toString()))) { |
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388 |
JavaFileObject fe = |
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389 |
PathFileObject.createDirectoryPathFileObject( |
|
390 |
JavacPathFileManager.this, file, pathDir); |
|
391 |
results.append(fe); |
|
392 |
} |
|
393 |
return FileVisitResult.CONTINUE; |
|
394 |
} |
|
395 |
}); |
|
396 |
} |
|
397 |
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398 |
@Override |
|
399 |
public Iterable<? extends JavaFileObject> getJavaFileObjectsFromPaths( |
|
400 |
Iterable<? extends Path> paths) { |
|
401 |
ArrayList<PathFileObject> result; |
|
402 |
if (paths instanceof Collection<?>) |
|
403 |
result = new ArrayList<PathFileObject>(((Collection<?>)paths).size()); |
|
404 |
else |
|
405 |
result = new ArrayList<PathFileObject>(); |
|
406 |
for (Path p: paths) |
|
407 |
result.add(PathFileObject.createSimplePathFileObject(this, nullCheck(p))); |
|
408 |
return result; |
|
409 |
} |
|
410 |
||
411 |
@Override |
|
412 |
public Iterable<? extends JavaFileObject> getJavaFileObjects(Path... paths) { |
|
413 |
return getJavaFileObjectsFromPaths(Arrays.asList(nullCheck(paths))); |
|
414 |
} |
|
415 |
||
416 |
@Override |
|
417 |
public JavaFileObject getJavaFileForInput(Location location, |
|
418 |
String className, Kind kind) throws IOException { |
|
419 |
return getFileForInput(location, getRelativePath(className, kind)); |
|
420 |
} |
|
421 |
||
422 |
@Override |
|
423 |
public FileObject getFileForInput(Location location, |
|
424 |
String packageName, String relativeName) throws IOException { |
|
425 |
return getFileForInput(location, getRelativePath(packageName, relativeName)); |
|
426 |
} |
|
427 |
||
428 |
private JavaFileObject getFileForInput(Location location, String relativePath) |
|
429 |
throws IOException { |
|
430 |
for (Path p: getLocation(location)) { |
|
431 |
if (isDirectory(p)) { |
|
432 |
Path f = resolve(p, relativePath); |
|
433 |
if (f.exists()) |
|
434 |
return PathFileObject.createDirectoryPathFileObject(this, f, p); |
|
435 |
} else { |
|
436 |
FileSystem fs = getFileSystem(p); |
|
437 |
if (fs != null) { |
|
438 |
Path file = getPath(fs, relativePath); |
|
439 |
if (file.exists()) |
|
440 |
return PathFileObject.createJarPathFileObject(this, file); |
|
441 |
} |
|
442 |
} |
|
443 |
} |
|
444 |
return null; |
|
445 |
} |
|
446 |
||
447 |
@Override |
|
448 |
public JavaFileObject getJavaFileForOutput(Location location, |
|
449 |
String className, Kind kind, FileObject sibling) throws IOException { |
|
450 |
return getFileForOutput(location, getRelativePath(className, kind), sibling); |
|
451 |
} |
|
452 |
||
453 |
@Override |
|
454 |
public FileObject getFileForOutput(Location location, String packageName, |
|
455 |
String relativeName, FileObject sibling) |
|
456 |
throws IOException { |
|
457 |
return getFileForOutput(location, getRelativePath(packageName, relativeName), sibling); |
|
458 |
} |
|
459 |
||
460 |
private JavaFileObject getFileForOutput(Location location, |
|
461 |
String relativePath, FileObject sibling) { |
|
462 |
Path dir = getOutputLocation(location); |
|
463 |
if (dir == null) { |
|
464 |
if (location == CLASS_OUTPUT) { |
|
465 |
Path siblingDir = null; |
|
466 |
if (sibling != null && sibling instanceof PathFileObject) { |
|
467 |
siblingDir = ((PathFileObject) sibling).getPath().getParent(); |
|
468 |
} |
|
469 |
return PathFileObject.createSiblingPathFileObject(this, |
|
470 |
siblingDir.resolve(getBaseName(relativePath)), |
|
471 |
relativePath); |
|
472 |
} else if (location == SOURCE_OUTPUT) { |
|
473 |
dir = getOutputLocation(CLASS_OUTPUT); |
|
474 |
} |
|
475 |
} |
|
476 |
||
477 |
Path file; |
|
478 |
if (dir != null) { |
|
479 |
file = resolve(dir, relativePath); |
|
480 |
return PathFileObject.createDirectoryPathFileObject(this, file, dir); |
|
481 |
} else { |
|
482 |
file = getPath(getDefaultFileSystem(), relativePath); |
|
483 |
return PathFileObject.createSimplePathFileObject(this, file); |
|
484 |
} |
|
485 |
||
486 |
} |
|
487 |
||
488 |
@Override |
|
489 |
public String inferBinaryName(Location location, JavaFileObject fo) { |
|
490 |
nullCheck(fo); |
|
491 |
// Need to match the path semantics of list(location, ...) |
|
492 |
Iterable<? extends Path> paths = getLocation(location); |
|
493 |
if (paths == null) { |
|
494 |
return null; |
|
495 |
} |
|
496 |
||
497 |
if (!(fo instanceof PathFileObject)) |
|
498 |
throw new IllegalArgumentException(fo.getClass().getName()); |
|
499 |
||
500 |
return ((PathFileObject) fo).inferBinaryName(paths); |
|
501 |
} |
|
502 |
||
503 |
private FileSystem getFileSystem(Path p) throws IOException { |
|
504 |
FileSystem fs = fileSystems.get(p); |
|
505 |
if (fs == null) { |
|
506 |
fs = FileSystems.newFileSystem(p, Collections.<String,Void>emptyMap(), null); |
|
507 |
fileSystems.put(p, fs); |
|
508 |
} |
|
509 |
return fs; |
|
510 |
} |
|
511 |
||
512 |
private Map<Path,FileSystem> fileSystems; |
|
513 |
||
514 |
// </editor-fold> |
|
515 |
||
516 |
// <editor-fold defaultstate="collapsed" desc="Utility methods"> |
|
517 |
||
518 |
private static String getRelativePath(String className, Kind kind) { |
|
519 |
return className.replace(".", "/") + kind.extension; |
|
520 |
} |
|
521 |
||
522 |
private static String getRelativePath(String packageName, String relativeName) { |
|
523 |
return packageName.replace(".", "/") + relativeName; |
|
524 |
} |
|
525 |
||
526 |
private static String getBaseName(String relativePath) { |
|
527 |
int lastSep = relativePath.lastIndexOf("/"); |
|
528 |
return relativePath.substring(lastSep + 1); // safe if "/" not found |
|
529 |
} |
|
530 |
||
531 |
private static boolean isDirectory(Path path) throws IOException { |
|
532 |
BasicFileAttributes attrs = Attributes.readBasicFileAttributes(path); |
|
533 |
return attrs.isDirectory(); |
|
534 |
} |
|
535 |
||
536 |
private static Path getPath(FileSystem fs, String relativePath) { |
|
537 |
return fs.getPath(relativePath.replace("/", fs.getSeparator())); |
|
538 |
} |
|
539 |
||
540 |
private static Path resolve(Path base, String relativePath) { |
|
541 |
FileSystem fs = base.getFileSystem(); |
|
542 |
Path rp = fs.getPath(relativePath.replace("/", fs.getSeparator())); |
|
543 |
return base.resolve(rp); |
|
544 |
} |
|
545 |
||
546 |
// </editor-fold> |
|
547 |
||
548 |
} |