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/*
* Copyright (C) 2012 The CyanogenMod Project
*
* 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.cyanogenmod.filemanager.commands.java;
import android.util.Log;
import com.cyanogenmod.filemanager.commands.ListExecutable.LIST_MODE;
import com.cyanogenmod.filemanager.commands.ResolveLinkExecutable;
import com.cyanogenmod.filemanager.console.ExecutionException;
import com.cyanogenmod.filemanager.console.InsufficientPermissionsException;
import com.cyanogenmod.filemanager.console.NoSuchFileOrDirectory;
import com.cyanogenmod.filemanager.model.FileSystemObject;
import java.io.File;
/**
* A class for retrieve the real file name of a symlink. This command
* can be used too for retrieve the absolute path of a file or directory
*/
public class ResolveLinkCommand extends Program implements ResolveLinkExecutable {
private static final String TAG = "ResolveLinkCommand"; //$NON-NLS-1$
private final String mSrc;
private FileSystemObject mFso;
/**
* Constructor of <code>ResolveLinkCommand</code>.
*
* @param src The file system object to read
*/
public ResolveLinkCommand(String src) {
super();
this.mSrc = src;
}
/**
* {@inheritDoc}
*/
@Override
public FileSystemObject getResult() {
return this.mFso;
}
/**
* {@inheritDoc}
*/
@Override
public void execute()
throws InsufficientPermissionsException, NoSuchFileOrDirectory, ExecutionException {
if (isTrace()) {
Log.v(TAG,
String.format("Resolving link of %s", //$NON-NLS-1$
this.mSrc));
}
File f = new File(this.mSrc);
if (!f.exists()) {
if (isTrace()) {
Log.v(TAG, "Result: FAIL. InsufficientPermissionsException"); //$NON-NLS-1$
}
throw new InsufficientPermissionsException();
}
try {
String absPath = f.getCanonicalPath();
ListCommand cmd = new ListCommand(absPath, LIST_MODE.FILEINFO);
cmd.execute();
this.mFso = cmd.getSingleResult();
} catch (Exception e) {
if (isTrace()) {
Log.v(TAG, "Result: FAIL. ExecutionException"); //$NON-NLS-1$
}
throw new ExecutionException("can't resolve link"); //$NON-NLS-1$
}
if (isTrace()) {
Log.v(TAG,
String.format("Link: %s", //$NON-NLS-1$
this.mFso));
}
if (isTrace()) {
Log.v(TAG, "Result: OK"); //$NON-NLS-1$
}
}
}
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