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Posted to dev@commons.apache.org by im...@apache.org on 2004/06/15 21:26:21 UTC
cvs commit: jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/provider/compressedFile CompressedFileFileObject.java CompressedFileFileProvider.java CompressedFileFileSystem.java
imario 2004/06/15 12:26:21
Added: vfs/src/java/org/apache/commons/vfs/provider/compressedFile
CompressedFileFileObject.java
CompressedFileFileProvider.java
CompressedFileFileSystem.java
Log:
base for compressed files e.g. gzip, bzip2
Revision Changes Path
1.1 jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/provider/compressedFile/CompressedFileFileObject.java
Index: CompressedFileFileObject.java
===================================================================
/*
* Copyright 2002, 2003,2004 The Apache Software Foundation.
*
* 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 org.apache.commons.vfs.provider.compressedFile;
import org.apache.commons.vfs.Capability;
import org.apache.commons.vfs.FileName;
import org.apache.commons.vfs.FileObject;
import org.apache.commons.vfs.FileSystemException;
import org.apache.commons.vfs.FileType;
import org.apache.commons.vfs.provider.AbstractFileObject;
/**
* A compressedFile compressed file
*
* @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
* @version $Revision: 1.1 $ $Date: 2004/06/15 19:26:21 $
*/
public abstract class CompressedFileFileObject
extends AbstractFileObject
implements FileObject
{
private final FileObject container;
private String[] children;
public CompressedFileFileObject(FileName name, FileObject container, CompressedFileFileSystem fs)
{
super(name, fs);
this.container = container;
// todo, add getBaseName(String) to FileName
String basename = container.getName().getBaseName();
int pos = basename.lastIndexOf('.');
basename = basename.substring(0, pos);
children = new String[]
{
basename
};
}
/**
* Returns true if this file is read-only.
*/
public boolean isWriteable()
{
return getFileSystem().hasCapability(Capability.WRITE_CONTENT);
}
/**
* Returns the file's type.
*/
protected FileType doGetType() throws FileSystemException
{
return this.container.getType();
}
/**
* Lists the children of the file.
*/
protected String[] doListChildren()
{
return children;
}
/**
* Returns the size of the file content (in bytes). Is only called if
* {@link #doGetType} returns {@link FileType#FILE}.
*/
protected long doGetContentSize()
{
return -1;
}
/**
* Returns the last modified time of this file.
*/
protected long doGetLastModifiedTime() throws Exception
{
return container.getContent().getLastModifiedTime();
}
protected FileObject getContainer()
{
return container;
}
public void createFile() throws FileSystemException
{
container.createFile();
injectType(FileType.FILE);
}
}
1.1 jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/provider/compressedFile/CompressedFileFileProvider.java
Index: CompressedFileFileProvider.java
===================================================================
/*
* Copyright 2002, 2003,2004 The Apache Software Foundation.
*
* 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 org.apache.commons.vfs.provider.compressedFile;
import org.apache.commons.vfs.FileName;
import org.apache.commons.vfs.FileObject;
import org.apache.commons.vfs.FileSystem;
import org.apache.commons.vfs.FileSystemException;
import org.apache.commons.vfs.FileSystemOptions;
import org.apache.commons.vfs.provider.AbstractLayeredFileProvider;
import org.apache.commons.vfs.provider.FileProvider;
import org.apache.commons.vfs.provider.zip.ZipFileName;
import java.util.Collection;
/**
* A file system provider for compressedFile compressed files. Provides read-only file
* systems.
*
* @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
* @version $Revision: 1.1 $ $Date: 2004/06/15 19:26:21 $
*/
public abstract class CompressedFileFileProvider
extends AbstractLayeredFileProvider
implements FileProvider
{
public CompressedFileFileProvider()
{
super();
}
/**
* Parses an absolute URI.
*
* @param uri The URI to parse.
*/
protected FileName parseUri(final String uri)
throws FileSystemException
{
return ZipFileName.parseUri(uri);
}
/**
* Creates a layered file system. This method is called if the file system
* is not cached.
*
* @param scheme The URI scheme.
* @param file The file to create the file system on top of.
* @return The file system.
*/
protected FileSystem doCreateFileSystem(final String scheme,
final FileObject file,
final FileSystemOptions fileSystemOptions)
throws FileSystemException
{
final FileName name =
new ZipFileName(scheme, file.getName().getURI(), FileName.ROOT_PATH);
return createFileSystem(name, file, fileSystemOptions);
}
protected abstract FileSystem createFileSystem(final FileName name, final FileObject file, final FileSystemOptions fileSystemOptions) throws FileSystemException;
public abstract Collection getCapabilities();
}
1.1 jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/provider/compressedFile/CompressedFileFileSystem.java
Index: CompressedFileFileSystem.java
===================================================================
/*
* Copyright 2002, 2003,2004 The Apache Software Foundation.
*
* 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 org.apache.commons.vfs.provider.compressedFile;
import org.apache.commons.vfs.FileName;
import org.apache.commons.vfs.FileObject;
import org.apache.commons.vfs.FileSystem;
import org.apache.commons.vfs.FileSystemException;
import org.apache.commons.vfs.FileSystemOptions;
import org.apache.commons.vfs.provider.AbstractFileSystem;
import java.util.Collection;
/**
* A read-only file system for compressedFile files.
*
* @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
* @version $Revision: 1.1 $ $Date: 2004/06/15 19:26:21 $
*/
public abstract class CompressedFileFileSystem
extends AbstractFileSystem
implements FileSystem
{
public CompressedFileFileSystem(final FileName rootName,
final FileObject parentLayer,
final FileSystemOptions fileSystemOptions)
throws FileSystemException
{
super(rootName, parentLayer, fileSystemOptions);
}
public void init() throws FileSystemException
{
super.init();
}
/**
* Returns the capabilities of this file system.
*/
protected abstract void addCapabilities(final Collection caps);
/**
* Creates a file object.
*/
protected abstract FileObject createFile(final FileName name) throws FileSystemException;
}
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