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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.openapi.vfs.local;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.vfs.VfsUtilCore;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileSystem;
import org.jetbrains.annotations.NotNull;
import java.io.*;
import java.util.ArrayList;
import java.util.List;
/**
* @author yole
*/
public class CoreLocalVirtualFile extends VirtualFile {
private final CoreLocalFileSystem myFileSystem;
private final File myIoFile;
private VirtualFile[] myChildren;
private final boolean isDirectory;
public CoreLocalVirtualFile(@NotNull CoreLocalFileSystem fileSystem, @NotNull File ioFile) {
this(fileSystem, ioFile, ioFile.isDirectory());
}
public CoreLocalVirtualFile(@NotNull CoreLocalFileSystem fileSystem, @NotNull File ioFile, boolean isDirectory) {
myFileSystem = fileSystem;
myIoFile = ioFile;
this.isDirectory = isDirectory;
}
@NotNull
@Override
public String getName() {
return myIoFile.getName();
}
@NotNull
@Override
public VirtualFileSystem getFileSystem() {
return myFileSystem;
}
@NotNull
@Override
public String getPath() {
return FileUtil.toSystemIndependentName(myIoFile.getAbsolutePath());
}
@Override
public boolean isWritable() {
return false; // Core VFS isn't writable.
}
@Override
public boolean isDirectory() {
return isDirectory;
}
@Override
public boolean isValid() {
return true; // Core VFS cannot change, doesn't refresh so once found, any file is writable
}
@Override
public VirtualFile getParent() {
File parentFile = myIoFile.getParentFile();
return parentFile != null ? new CoreLocalVirtualFile(myFileSystem, parentFile) : null;
}
@Override
public VirtualFile[] getChildren() {
VirtualFile[] answer = myChildren;
if (answer == null) {
List<VirtualFile> result = new ArrayList<VirtualFile>();
final File[] files = myIoFile.listFiles();
if (files == null) {
answer = EMPTY_ARRAY;
}
else {
for (File file : files) {
result.add(new CoreLocalVirtualFile(myFileSystem, file));
}
answer = result.toArray(new VirtualFile[result.size()]);
}
myChildren = answer;
}
return answer;
}
@NotNull
@Override
public OutputStream getOutputStream(Object requestor, long newModificationStamp, long newTimeStamp) throws IOException {
throw new UnsupportedOperationException();
}
@NotNull
@Override
public byte[] contentsToByteArray() throws IOException {
return FileUtil.loadFileBytes(myIoFile);
}
@Override
public long getTimeStamp() {
return myIoFile.lastModified();
}
@Override
public long getLength() {
return myIoFile.length();
}
@Override
public void refresh(boolean asynchronous, boolean recursive, Runnable postRunnable) {
}
@Override
public InputStream getInputStream() throws IOException {
return VfsUtilCore.inputStreamSkippingBOM(new BufferedInputStream(new FileInputStream(myIoFile)), this);
}
@Override
public long getModificationStamp() {
return 0;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
CoreLocalVirtualFile that = (CoreLocalVirtualFile)o;
return myIoFile.equals(that.myIoFile);
}
@Override
public int hashCode() {
return myIoFile.hashCode();
}
}
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