/
AbstractFileResource.java
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/
AbstractFileResource.java
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/**
* Copyright 2016 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.forge.addon.resource;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.nio.file.InvalidPathException;
import java.nio.file.Path;
import org.jboss.forge.addon.resource.monitor.ResourceMonitor;
import org.jboss.forge.furnace.util.Assert;
import org.jboss.forge.furnace.util.Streams;
/**
* A standard, built-in resource for representing files on the filesystem.
*
* @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
* @author <a href="mailto:ggastald@redhat.com">George Gastaldi</a>
*/
public abstract class AbstractFileResource<T extends FileResource<T>> extends AbstractResource<File> implements
FileResource<T>
{
private File file;
private long lastModification = -1;
protected AbstractFileResource(final ResourceFactory factory, final File file)
{
super(factory, null);
this.file = file;
}
@Override
public String getName()
{
return file.getName();
}
@Override
public String toString()
{
return getFullyQualifiedName();
}
@Override
public File getUnderlyingResourceObject()
{
return file;
}
@Override
public InputStream getResourceInputStream()
{
try
{
return getFileOperations().createInputStream(file);
}
catch (IOException e)
{
throw new ResourceException("cannot obtain stream to file: file does not exist: " + file.getAbsolutePath());
}
}
@Override
public DirectoryResource getParent()
{
return file.getParentFile() != null ? getResourceFactory().create(DirectoryResource.class, file.getParentFile())
: null;
}
@Override
public Resource<?> getChild(final String name)
{
return null;
}
/**
* Create a new {@link Resource} instance for the target file. The new {@link Resource} should be of the same type as
* <b>this</b>.
*
* @param file The file to create the resource instance from.
* @return A new resource.
*/
@Override
public abstract Resource<File> createFrom(File file);
@Override
public boolean exists()
{
return getFileOperations().fileExists(file);
}
@Override
public boolean isDirectory()
{
return getFileOperations().fileExistsAndIsDirectory(file);
}
@Override
public boolean isStale()
{
return lastModification != getUnderlyingResourceObject().lastModified();
}
@Override
public void refresh()
{
lastModification = getUnderlyingResourceObject().lastModified();
}
@Override
public boolean mkdir()
{
return getFileOperations().mkdir(file);
}
@Override
public boolean mkdirs()
{
return getFileOperations().mkdirs(file);
}
@Override
public boolean delete()
{
return delete(false);
}
@Override
public boolean delete(final boolean recursive)
{
if (recursive)
{
if (getFileOperations().deleteFile(file, recursive))
{
return true;
}
return false;
}
File[] listFiles = getFileOperations().listFiles(file);
if ((listFiles != null) && (listFiles.length != 0))
{
throw new RuntimeException("directory not empty");
}
if (getFileOperations().deleteFile(file))
{
return true;
}
return false;
}
@Override
public void deleteOnExit()
{
getFileOperations().deleteFileOnExit(file);
}
@Override
public T setContents(String data)
{
if (data == null)
{
data = "";
}
return setContents(data.toCharArray());
}
@Override
public T setContents(String data, Charset charset)
{
if (data == null)
{
data = "";
}
return setContents(data.toCharArray(), charset);
}
@Override
public T setContents(char[] data, Charset charset)
{
return setContents(new ByteArrayInputStream(new String(data).getBytes(charset)));
}
@Override
public T setContents(final char[] data)
{
return setContents(new ByteArrayInputStream(new String(data).getBytes()));
}
@Override
@SuppressWarnings("unchecked")
public T setContents(final InputStream data)
{
Assert.notNull(data, "InputStream must not be null.");
try
{
if (!exists())
{
getParent().mkdirs();
if (!createNewFile())
{
throw new IOException("Failed to create file: " + file);
}
}
try (OutputStream out = getResourceOutputStream())
{
Streams.write(data, out);
out.flush();
}
finally
{
Streams.closeQuietly(data);
}
}
catch (IOException e)
{
throw new ResourceException("Error while setting the contents", e);
}
return (T) this;
}
@Override
public boolean createNewFile()
{
try
{
getParent().mkdirs();
if (getFileOperations().createNewFile(file))
{
return true;
}
return false;
}
catch (IOException e)
{
throw new ResourceException("Error while creating a new file", e);
}
}
@Override
@SuppressWarnings("unchecked")
public T createTempResource()
{
try
{
T result = (T) createFrom(File.createTempFile("forgetemp", ""));
return result;
}
catch (IOException e)
{
throw new ResourceException("Error while creating a temporary resource", e);
}
}
@Override
public boolean renameTo(final String pathspec)
{
return renameTo(new File(pathspec));
}
@Override
public boolean renameTo(final FileResource<?> target)
{
return renameTo(target.getUnderlyingResourceObject());
}
private boolean renameTo(final File target)
{
if (getFileOperations().renameFile(file, target))
{
file = target;
return true;
}
return false;
}
@Override
public long getSize()
{
return getFileOperations().getFileLength(file);
}
@Override
public boolean isExecutable()
{
return (this.file.canExecute() && !getFileOperations().fileExistsAndIsDirectory(file));
}
@Override
public void setExecutable(boolean executable, boolean ownerOnly)
{
this.file.setExecutable(executable, ownerOnly);
}
@Override
public boolean isReadable()
{
return (this.file.canRead() && !getFileOperations().fileExistsAndIsDirectory(file));
}
@Override
public void setReadable(boolean readable, boolean ownerOnly)
{
this.file.setReadable(readable, ownerOnly);
}
@Override
public boolean isWritable()
{
return (this.file.canWrite() && !getFileOperations().fileExistsAndIsDirectory(file));
}
@Override
public void setWritable(boolean writable, boolean ownerOnly)
{
this.file.setWritable(writable, ownerOnly);
}
@Override
public String getFullyQualifiedName()
{
return this.file.getAbsolutePath();
}
@Override
public ResourceMonitor monitor()
{
return getResourceFactory().monitor(this);
}
@Override
public ResourceMonitor monitor(ResourceFilter filter)
{
return getResourceFactory().monitor(this, filter);
}
protected FileOperations getFileOperations()
{
return getResourceFactory().getFileOperations();
}
@Override
public long getLastModified()
{
return file.lastModified();
}
@Override
public void setLastModified(long time)
{
file.setLastModified(time);
}
@Override
public OutputStream getResourceOutputStream()
{
try
{
return getFileOperations().createOutputStream(file);
}
catch (IOException ioe)
{
throw new ResourceException("Error while creating OutputStream for Resource " + this, ioe);
}
}
@Override
public void moveTo(FileResource<?> target)
{
try
{
this.file = getFileOperations().move(file, target.getUnderlyingResourceObject());
}
catch (IOException e)
{
throw new ResourceException("Error while moving Resource " + this, e);
}
}
@Override
public OutputStream getResourceOutputStream(boolean append)
{
try
{
return getFileOperations().createOutputStream(file, append);
}
catch (IOException ioe)
{
throw new ResourceException("Error while creating OutputStream for Resource " + this, ioe);
}
}
@Override
public Resource<File> resolve(String path)
{
try
{
Path newPath = getUnderlyingResourceObject().toPath().resolve(path);
return getResourceFactory().create(newPath.toFile());
}
catch (InvalidPathException e)
{
return null;
}
}
@Override
public <TYPE extends Resource<File>> TYPE resolve(final Class<TYPE> type, final String path)
{
try
{
Path newPath = getUnderlyingResourceObject().toPath().resolve(path);
return getResourceFactory().create(type, newPath.toFile());
}
catch (InvalidPathException e)
{
return null;
}
}
}