001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.vfs2.provider.http5;
018
019import java.io.IOException;
020
021import org.apache.commons.vfs2.FileContent;
022import org.apache.commons.vfs2.FileContentInfo;
023import org.apache.commons.vfs2.FileContentInfoFactory;
024import org.apache.commons.vfs2.FileSystemException;
025import org.apache.commons.vfs2.impl.DefaultFileContentInfo;
026import org.apache.commons.vfs2.util.FileObjectUtils;
027import org.apache.hc.core5.http.ContentType;
028import org.apache.hc.core5.http.Header;
029import org.apache.hc.core5.http.HttpHeaders;
030import org.apache.hc.core5.http.HttpResponse;
031
032/**
033 * Creates {@code FileContentInfoFactory} instances for http5 provider.
034 *
035 * @since 2.5.0
036 */
037public class Http5FileContentInfoFactory implements FileContentInfoFactory {
038
039    /**
040     * Constructs a new instance.
041     */
042    public Http5FileContentInfoFactory() {
043        // empty
044    }
045
046    @SuppressWarnings("unchecked")
047    @Override
048    public FileContentInfo create(final FileContent fileContent) throws FileSystemException {
049        String contentMimeType = null;
050        String contentCharset = null;
051
052        try (Http5FileObject<Http5FileSystem> http4File = (Http5FileObject<Http5FileSystem>) FileObjectUtils
053                .getAbstractFileObject(fileContent.getFile())) {
054            final HttpResponse lastHeadResponse = http4File.getLastHeadResponse();
055
056            final Header header = lastHeadResponse.getFirstHeader(HttpHeaders.CONTENT_TYPE);
057
058            if (header != null) {
059                final ContentType contentType = ContentType.parse(header.getValue());
060                contentMimeType = contentType.getMimeType();
061
062                if (contentType.getCharset() != null) {
063                    contentCharset = contentType.getCharset().name();
064                }
065            }
066
067            return new DefaultFileContentInfo(contentMimeType, contentCharset);
068        } catch (final IOException e) {
069            throw new FileSystemException(e);
070        }
071    }
072}