/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.vfs2.impl;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.vfs2.FileContent;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;
/**
* A helper class that determines the provider to use for a file.
*
* @author <a href="http://commons.apache.org/vfs/team-list.html">Commons VFS team</a>
*/
class FileTypeMap
{
private final Map<String, String> mimeTypeMap = new HashMap<String, String>();
private final Map<String, String> extensionMap = new HashMap<String, String>();
/**
* Adds a MIME type mapping.
*/
public void addMimeType(final String mimeType, final String scheme)
{
mimeTypeMap.put(mimeType, scheme);
}
/**
* Adds a filename extension mapping.
*/
public void addExtension(final String extension, final String scheme)
{
extensionMap.put(extension, scheme);
}
/**
* Finds the provider to use to create a filesystem from a given file.
*/
public String getScheme(final FileObject file) throws FileSystemException
{
// Check the file's mime type for a match
final FileContent content = file.getContent();
// final String mimeType = (String) content.getAttribute("content-type");
final String mimeType = content.getContentInfo().getContentType();
if (mimeType != null)
{
return mimeTypeMap.get(mimeType);
}
// Check the file's extension for a match
final String extension = file.getName().getExtension();
return extensionMap.get(extension);
}
}