449N/A/*
961N/A * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
449N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
449N/A *
449N/A * This code is free software; you can redistribute it and/or modify it
449N/A * under the terms of the GNU General Public License version 2 only, as
553N/A * published by the Free Software Foundation. Oracle designates this
449N/A * particular file as subject to the "Classpath" exception as provided
553N/A * by Oracle in the LICENSE file that accompanied this code.
449N/A *
449N/A * This code is distributed in the hope that it will be useful, but WITHOUT
449N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
449N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
449N/A * version 2 for more details (a copy is included in the LICENSE file that
449N/A * accompanied this code).
449N/A *
449N/A * You should have received a copy of the GNU General Public License version
449N/A * 2 along with this work; if not, write to the Free Software Foundation,
449N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
449N/A *
553N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
553N/A * or visit www.oracle.com if you need additional information or have any
553N/A * questions.
449N/A */
449N/A
449N/Apackage com.sun.tools.javac.nio;
449N/A
449N/Aimport java.io.IOException;
449N/Aimport java.io.InputStream;
449N/Aimport java.io.InputStreamReader;
449N/Aimport java.io.OutputStream;
449N/Aimport java.io.OutputStreamWriter;
449N/Aimport java.io.Reader;
449N/Aimport java.io.Writer;
449N/Aimport java.net.URI;
449N/Aimport java.nio.ByteBuffer;
449N/Aimport java.nio.CharBuffer;
449N/Aimport java.nio.charset.CharsetDecoder;
449N/Aimport java.nio.file.Files;
958N/Aimport java.nio.file.LinkOption;
449N/Aimport java.nio.file.Path;
449N/Aimport java.nio.file.attribute.BasicFileAttributes;
449N/Aimport javax.lang.model.element.Modifier;
449N/Aimport javax.lang.model.element.NestingKind;
449N/Aimport javax.tools.JavaFileObject;
449N/A
449N/Aimport com.sun.tools.javac.util.BaseFileManager;
449N/A
449N/A
449N/A/**
449N/A * Implementation of JavaFileObject using java.nio.file API.
449N/A *
449N/A * <p>PathFileObjects are, for the most part, straightforward wrappers around
449N/A * Path objects. The primary complexity is the support for "inferBinaryName".
449N/A * This is left as an abstract method, implemented by each of a number of
449N/A * different factory methods, which compute the binary name based on
449N/A * information available at the time the file object is created.
449N/A *
580N/A * <p><b>This is NOT part of any supported API.
580N/A * If you write code that depends on this, you do so at your own risk.
449N/A * This code and its internal interfaces are subject to change or
449N/A * deletion without notice.</b>
449N/A */
449N/Aabstract class PathFileObject implements JavaFileObject {
449N/A private JavacPathFileManager fileManager;
449N/A private Path path;
449N/A
449N/A /**
449N/A * Create a PathFileObject within a directory, such that the binary name
449N/A * can be inferred from the relationship to the parent directory.
449N/A */
449N/A static PathFileObject createDirectoryPathFileObject(JavacPathFileManager fileManager,
449N/A final Path path, final Path dir) {
449N/A return new PathFileObject(fileManager, path) {
449N/A @Override
449N/A String inferBinaryName(Iterable<? extends Path> paths) {
449N/A return toBinaryName(dir.relativize(path));
449N/A }
449N/A };
449N/A }
449N/A
449N/A /**
449N/A * Create a PathFileObject in a file system such as a jar file, such that
449N/A * the binary name can be inferred from its position within the filesystem.
449N/A */
449N/A static PathFileObject createJarPathFileObject(JavacPathFileManager fileManager,
449N/A final Path path) {
449N/A return new PathFileObject(fileManager, path) {
449N/A @Override
449N/A String inferBinaryName(Iterable<? extends Path> paths) {
449N/A return toBinaryName(path);
449N/A }
449N/A };
449N/A }
449N/A
449N/A /**
449N/A * Create a PathFileObject whose binary name can be inferred from the
449N/A * relative path to a sibling.
449N/A */
449N/A static PathFileObject createSiblingPathFileObject(JavacPathFileManager fileManager,
449N/A final Path path, final String relativePath) {
449N/A return new PathFileObject(fileManager, path) {
449N/A @Override
449N/A String inferBinaryName(Iterable<? extends Path> paths) {
449N/A return toBinaryName(relativePath, "/");
449N/A }
449N/A };
449N/A }
449N/A
449N/A /**
449N/A * Create a PathFileObject whose binary name might be inferred from its
449N/A * position on a search path.
449N/A */
449N/A static PathFileObject createSimplePathFileObject(JavacPathFileManager fileManager,
449N/A final Path path) {
449N/A return new PathFileObject(fileManager, path) {
449N/A @Override
449N/A String inferBinaryName(Iterable<? extends Path> paths) {
449N/A Path absPath = path.toAbsolutePath();
449N/A for (Path p: paths) {
449N/A Path ap = p.toAbsolutePath();
449N/A if (absPath.startsWith(ap)) {
449N/A try {
449N/A Path rp = ap.relativize(absPath);
449N/A if (rp != null) // maybe null if absPath same as ap
449N/A return toBinaryName(rp);
449N/A } catch (IllegalArgumentException e) {
449N/A // ignore this p if cannot relativize path to p
449N/A }
449N/A }
449N/A }
449N/A return null;
449N/A }
449N/A };
449N/A }
449N/A
449N/A protected PathFileObject(JavacPathFileManager fileManager, Path path) {
449N/A fileManager.getClass(); // null check
449N/A path.getClass(); // null check
449N/A this.fileManager = fileManager;
449N/A this.path = path;
449N/A }
449N/A
449N/A abstract String inferBinaryName(Iterable<? extends Path> paths);
449N/A
449N/A /**
449N/A * Return the Path for this object.
449N/A * @return the Path for this object.
449N/A */
449N/A Path getPath() {
449N/A return path;
449N/A }
449N/A
449N/A @Override
449N/A public Kind getKind() {
846N/A return BaseFileManager.getKind(path.getFileName().toString());
449N/A }
449N/A
449N/A @Override
449N/A public boolean isNameCompatible(String simpleName, Kind kind) {
449N/A simpleName.getClass();
449N/A // null check
449N/A if (kind == Kind.OTHER && getKind() != kind) {
449N/A return false;
449N/A }
449N/A String sn = simpleName + kind.extension;
846N/A String pn = path.getFileName().toString();
449N/A if (pn.equals(sn)) {
449N/A return true;
449N/A }
449N/A if (pn.equalsIgnoreCase(sn)) {
449N/A try {
449N/A // allow for Windows
958N/A return path.toRealPath(LinkOption.NOFOLLOW_LINKS).getFileName().toString().equals(sn);
449N/A } catch (IOException e) {
449N/A }
449N/A }
449N/A return false;
449N/A }
449N/A
449N/A @Override
449N/A public NestingKind getNestingKind() {
449N/A return null;
449N/A }
449N/A
449N/A @Override
449N/A public Modifier getAccessLevel() {
449N/A return null;
449N/A }
449N/A
449N/A @Override
449N/A public URI toUri() {
449N/A return path.toUri();
449N/A }
449N/A
449N/A @Override
449N/A public String getName() {
449N/A return path.toString();
449N/A }
449N/A
449N/A @Override
449N/A public InputStream openInputStream() throws IOException {
846N/A return Files.newInputStream(path);
449N/A }
449N/A
449N/A @Override
449N/A public OutputStream openOutputStream() throws IOException {
1093N/A fileManager.flushCache(this);
449N/A ensureParentDirectoriesExist();
846N/A return Files.newOutputStream(path);
449N/A }
449N/A
449N/A @Override
449N/A public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
449N/A CharsetDecoder decoder = fileManager.getDecoder(fileManager.getEncodingName(), ignoreEncodingErrors);
449N/A return new InputStreamReader(openInputStream(), decoder);
449N/A }
449N/A
449N/A @Override
449N/A public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
449N/A CharBuffer cb = fileManager.getCachedContent(this);
449N/A if (cb == null) {
449N/A InputStream in = openInputStream();
449N/A try {
449N/A ByteBuffer bb = fileManager.makeByteBuffer(in);
449N/A JavaFileObject prev = fileManager.log.useSource(this);
449N/A try {
449N/A cb = fileManager.decode(bb, ignoreEncodingErrors);
449N/A } finally {
449N/A fileManager.log.useSource(prev);
449N/A }
449N/A fileManager.recycleByteBuffer(bb);
449N/A if (!ignoreEncodingErrors) {
449N/A fileManager.cache(this, cb);
449N/A }
449N/A } finally {
449N/A in.close();
449N/A }
449N/A }
449N/A return cb;
449N/A }
449N/A
449N/A @Override
449N/A public Writer openWriter() throws IOException {
1093N/A fileManager.flushCache(this);
449N/A ensureParentDirectoriesExist();
846N/A return new OutputStreamWriter(Files.newOutputStream(path), fileManager.getEncodingName());
449N/A }
449N/A
449N/A @Override
449N/A public long getLastModified() {
449N/A try {
846N/A return Files.getLastModifiedTime(path).toMillis();
449N/A } catch (IOException e) {
449N/A return -1;
449N/A }
449N/A }
449N/A
449N/A @Override
449N/A public boolean delete() {
449N/A try {
846N/A Files.delete(path);
449N/A return true;
449N/A } catch (IOException e) {
449N/A return false;
449N/A }
449N/A }
449N/A
449N/A public boolean isSameFile(PathFileObject other) {
449N/A try {
846N/A return Files.isSameFile(path, other.path);
449N/A } catch (IOException e) {
449N/A return false;
449N/A }
449N/A }
449N/A
449N/A @Override
449N/A public boolean equals(Object other) {
449N/A return (other instanceof PathFileObject && path.equals(((PathFileObject) other).path));
449N/A }
449N/A
449N/A @Override
449N/A public int hashCode() {
449N/A return path.hashCode();
449N/A }
449N/A
449N/A @Override
449N/A public String toString() {
449N/A return getClass().getSimpleName() + "[" + path + "]";
449N/A }
449N/A
449N/A private void ensureParentDirectoriesExist() throws IOException {
449N/A Path parent = path.getParent();
449N/A if (parent != null)
449N/A Files.createDirectories(parent);
449N/A }
449N/A
449N/A private long size() {
449N/A try {
846N/A return Files.size(path);
449N/A } catch (IOException e) {
449N/A return -1;
449N/A }
449N/A }
449N/A
449N/A protected static String toBinaryName(Path relativePath) {
449N/A return toBinaryName(relativePath.toString(),
449N/A relativePath.getFileSystem().getSeparator());
449N/A }
449N/A
449N/A protected static String toBinaryName(String relativePath, String sep) {
465N/A return removeExtension(relativePath).replace(sep, ".");
449N/A }
449N/A
449N/A protected static String removeExtension(String fileName) {
449N/A int lastDot = fileName.lastIndexOf(".");
449N/A return (lastDot == -1 ? fileName : fileName.substring(0, lastDot));
449N/A }
449N/A}