com.redhat.ceylon.langtools.tools.javac.file.RegularFileObject Maven / Gradle / Ivy
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* 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.
*
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package com.redhat.ceylon.langtools.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 com.redhat.ceylon.javax.tools.JavaFileObject;
/**
* A subclass of JavaFileObject representing regular files.
*
* 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 RegularFileObject extends BaseFileObject {
/** Have the parent directories been created?
*/
private boolean hasParents = false;
private String name;
final File file;
private Reference absFileRef;
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 {
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 {
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 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 (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) {
try {
// Ceylon: getAbsoluteFile will not consider that /foo/../bar/joe.java is equal to /bar/joe.java
// so try the canonical file for best results
absFile = file.getCanonicalFile();
} catch (IOException e) {
absFile = file.getAbsoluteFile();
}
absFileRef = new SoftReference(absFile);
}
return absFile;
}
public File getUnderlyingFile(){
return file;
}
}