langtools/src/share/classes/com/sun/tools/javac/file/RegularFileObject.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2005, 2011, 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.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
 import java.io.Writer;
 import java.lang.ref.Reference;
 import java.lang.ref.SoftReference;
 import java.net.URI;
 import java.nio.ByteBuffer;
 import java.nio.CharBuffer;
 import java.nio.charset.CharsetDecoder;
 import javax.tools.JavaFileObject;
 import java.text.Normalizer;

 /**
  * A subclass of JavaFileObject representing regular files.
  *
  * <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>
  */
 class RegularFileObject extends BaseFileObject {

     /** Have the parent directories been created?
      */
     private boolean hasParents = false;
     private String name;
     final File file;
     private Reference<File> absFileRef;
     final static boolean isMacOS = System.getProperty("os.name", "").contains("OS X");

     public RegularFileObject(JavacFileManager fileManager, File f) {
         this(fileManager, f.getName(), f);
     }

     public RegularFileObject(JavacFileManager fileManager, String name, File f) {
         super(fileManager);
         if (f.isDirectory()) {
             throw new IllegalArgumentException("directories not supported");
         }
         this.name = name;
         this.file = f;
     }

     @Override
     public URI toUri() {
         return file.toURI().normalize();
     }

     @Override
     public String getName() {
         return file.getPath();
     }

     @Override
     public String getShortName() {
         return name;
     }

     @Override
     public JavaFileObject.Kind getKind() {
         return getKind(name);
     }

     @Override
     public InputStream openInputStream() throws IOException {
         return new FileInputStream(file);
     }

     @Override
     public OutputStream openOutputStream() throws IOException {
         fileManager.flushCache(this);
         ensureParentDirectoriesExist();
         return new FileOutputStream(file);
     }

     @Override
     public CharBuffer getCharContent(boolean ignoreEncodingErrors) throws IOException {
         CharBuffer cb = fileManager.getCachedContent(this);
         if (cb == null) {
             InputStream in = new FileInputStream(file);
             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 {
         fileManager.flushCache(this);
         ensureParentDirectoriesExist();
         return new OutputStreamWriter(new FileOutputStream(file), fileManager.getEncodingName());
     }

     @Override
     public long getLastModified() {
         return file.lastModified();
     }

     @Override
     public boolean delete() {
         return file.delete();
     }

     @Override
     protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {
         return fileManager.getDecoder(fileManager.getEncodingName(), ignoreEncodingErrors);
     }

     @Override
     protected String inferBinaryName(Iterable<? extends File> path) {
         String fPath = file.getPath();
         //System.err.println("RegularFileObject " + file + " " +r.getPath());
         for (File dir: path) {
             //System.err.println("dir: " + dir);
             String dPath = dir.getPath();
             if (dPath.length() == 0)
                 dPath = System.getProperty("user.dir");
             if (!dPath.endsWith(File.separator))
                 dPath += File.separator;
             if (fPath.regionMatches(true, 0, dPath, 0, dPath.length())
                 && new File(fPath.substring(0, dPath.length())).equals(new File(dPath))) {
                 String relativeName = fPath.substring(dPath.length());
                 return removeExtension(relativeName).replace(File.separatorChar, '.');
             }
         }
         return null;
     }

     @Override
     public boolean isNameCompatible(String cn, JavaFileObject.Kind kind) {
         cn.getClass();
         // null check
         if (kind == Kind.OTHER && getKind() != kind) {
             return false;
         }
         String n = cn + kind.extension;
         if (name.equals(n)) {
             return true;
         }
         if (isMacOS && Normalizer.isNormalized(name, Normalizer.Form.NFD)
             && Normalizer.isNormalized(n, Normalizer.Form.NFC)) {
             // On Mac OS X it is quite possible to file name and class
             // name normalized in a different way - in that case we have to normalize file name
             // to the Normal Form Compised (NFC)
             String normName = Normalizer.normalize(name, Normalizer.Form.NFC);
             if (normName.equals(n)) {
                 this.name = normName;
                 return true;
             }
         }

             if (name.equalsIgnoreCase(n)) {
             try {
                 // allow for Windows
                 return file.getCanonicalFile().getName().equals(n);
             } catch (IOException e) {
             }
         }
         return false;
     }

     private void ensureParentDirectoriesExist() throws IOException {
         if (!hasParents) {
             File parent = file.getParentFile();
             if (parent != null && !parent.exists()) {
                 if (!parent.mkdirs()) {
                     if (!parent.exists() || !parent.isDirectory()) {
                         throw new IOException("could not create parent directories");
                     }
                 }
             }
             hasParents = true;
         }
     }

     /**
      * Check if two file objects are equal.
      * Two RegularFileObjects are equal if the absolute paths of the underlying
      * files are equal.
      */
     @Override
     public boolean equals(Object other) {
         if (this == other)
             return true;

         if (!(other instanceof RegularFileObject))
             return false;

         RegularFileObject o = (RegularFileObject) other;
         return getAbsoluteFile().equals(o.getAbsoluteFile());
     }

     @Override
     public int hashCode() {
         return getAbsoluteFile().hashCode();
     }

     private File getAbsoluteFile() {
         File absFile = (absFileRef == null ? null : absFileRef.get());
         if (absFile == null) {
             absFile = file.getAbsoluteFile();
             absFileRef = new SoftReference<File>(absFile);
         }
         return absFile;
     }
 }
	/*
	* Copyright (c) 2005, 2011, 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.File;
	import java.io.FileInputStream;
	import java.io.FileOutputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.OutputStream;
	import java.io.OutputStreamWriter;
	import java.io.Writer;
	import java.lang.ref.Reference;
	import java.lang.ref.SoftReference;
	import java.net.URI;
	import java.nio.ByteBuffer;
	import java.nio.CharBuffer;
	import java.nio.charset.CharsetDecoder;
	import javax.tools.JavaFileObject;
	import java.text.Normalizer;

	/**
	* A subclass of JavaFileObject representing regular files.
	*
	* <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>
	*/
	class RegularFileObject extends BaseFileObject {

	/** Have the parent directories been created?
	*/
	private boolean hasParents = false;
	private String name;
	final File file;
	private Reference<File> absFileRef;
	final static boolean isMacOS = System.getProperty("os.name", "").contains("OS X");

	public RegularFileObject(JavacFileManager fileManager, File f) {
	this(fileManager, f.getName(), f);
	}

	public RegularFileObject(JavacFileManager fileManager, String name, File f) {
	super(fileManager);
	if (f.isDirectory()) {
	throw new IllegalArgumentException("directories not supported");
	}
	this.name = name;
	this.file = f;
	}

	@Override
	public URI toUri() {
	return file.toURI().normalize();
	}

	@Override
	public String getName() {
	return file.getPath();
	}

	@Override
	public String getShortName() {
	return name;
	}

	@Override
	public JavaFileObject.Kind getKind() {
	return getKind(name);
	}

	@Override
	public InputStream openInputStream() throws IOException {
	return new FileInputStream(file);
	}

	@Override
	public OutputStream openOutputStream() throws IOException {
	fileManager.flushCache(this);
	ensureParentDirectoriesExist();
	return new FileOutputStream(file);
	}

	@Override
	public CharBuffer getCharContent(boolean ignoreEncodingErrors) throws IOException {
	CharBuffer cb = fileManager.getCachedContent(this);
	if (cb == null) {
	InputStream in = new FileInputStream(file);
	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 {
	fileManager.flushCache(this);
	ensureParentDirectoriesExist();
	return new OutputStreamWriter(new FileOutputStream(file), fileManager.getEncodingName());
	}

	@Override
	public long getLastModified() {
	return file.lastModified();
	}

	@Override
	public boolean delete() {
	return file.delete();
	}

	@Override
	protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {
	return fileManager.getDecoder(fileManager.getEncodingName(), ignoreEncodingErrors);
	}

	@Override
	protected String inferBinaryName(Iterable<? extends File> path) {
	String fPath = file.getPath();
	//System.err.println("RegularFileObject " + file + " " +r.getPath());
	for (File dir: path) {
	//System.err.println("dir: " + dir);
	String dPath = dir.getPath();
	if (dPath.length() == 0)
	dPath = System.getProperty("user.dir");
	if (!dPath.endsWith(File.separator))
	dPath += File.separator;
	if (fPath.regionMatches(true, 0, dPath, 0, dPath.length())
	&& new File(fPath.substring(0, dPath.length())).equals(new File(dPath))) {
	String relativeName = fPath.substring(dPath.length());
	return removeExtension(relativeName).replace(File.separatorChar, '.');
	}
	}
	return null;
	}

	@Override
	public boolean isNameCompatible(String cn, JavaFileObject.Kind kind) {
	cn.getClass();
	// null check
	if (kind == Kind.OTHER && getKind() != kind) {
	return false;
	}
	String n = cn + kind.extension;
	if (name.equals(n)) {
	return true;
	}
	if (isMacOS && Normalizer.isNormalized(name, Normalizer.Form.NFD)
	&& Normalizer.isNormalized(n, Normalizer.Form.NFC)) {
	// On Mac OS X it is quite possible to file name and class
	// name normalized in a different way - in that case we have to normalize file name
	// to the Normal Form Compised (NFC)
	String normName = Normalizer.normalize(name, Normalizer.Form.NFC);
	if (normName.equals(n)) {
	this.name = normName;
	return true;
	}
	}

	if (name.equalsIgnoreCase(n)) {
	try {
	// allow for Windows
	return file.getCanonicalFile().getName().equals(n);
	} catch (IOException e) {
	}
	}
	return false;
	}

	private void ensureParentDirectoriesExist() throws IOException {
	if (!hasParents) {
	File parent = file.getParentFile();
	if (parent != null && !parent.exists()) {
	if (!parent.mkdirs()) {
	if (!parent.exists() \|\| !parent.isDirectory()) {
	throw new IOException("could not create parent directories");
	}
	}
	}
	hasParents = true;
	}
	}

	/**
	* Check if two file objects are equal.
	* Two RegularFileObjects are equal if the absolute paths of the underlying
	* files are equal.
	*/
	@Override
	public boolean equals(Object other) {
	if (this == other)
	return true;

	if (!(other instanceof RegularFileObject))
	return false;

	RegularFileObject o = (RegularFileObject) other;
	return getAbsoluteFile().equals(o.getAbsoluteFile());
	}

	@Override
	public int hashCode() {
	return getAbsoluteFile().hashCode();
	}

	private File getAbsoluteFile() {
	File absFile = (absFileRef == null ? null : absFileRef.get());
	if (absFile == null) {
	absFile = file.getAbsoluteFile();
	absFileRef = new SoftReference<File>(absFile);
	}
	return absFile;
	}
	}