org.jodconverter.document.SimpleDocumentFormatRegistry.java Source code

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Here is the source code for org.jodconverter.document.SimpleDocumentFormatRegistry.java

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/*
 * Copyright 2004 - 2012 Mirko Nasato and contributors
 *           2016 - 2018 Simon Braconnier and contributors
 *
 * This file is part of JODConverter - Java OpenDocument Converter.
 *
 * 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.jodconverter.document;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;

import org.apache.commons.lang3.StringUtils;

/** A SimpleDocumentFormatRegistry contains a collection of document formats supported by office. */
public class SimpleDocumentFormatRegistry implements DocumentFormatRegistry {

    private final Map<String, DocumentFormat> fmtsByExtension = new HashMap<>();
    private final Map<String, DocumentFormat> fmtsByMediaType = new HashMap<>();

    /**
     * Add a new format to the registry.
     *
     * @param documentFormat The format to add.
     */
    public void addFormat(final DocumentFormat documentFormat) {

        documentFormat.getExtensions().stream().map(StringUtils::lowerCase)
                .forEach(ext -> fmtsByExtension.put(ext, documentFormat));
        fmtsByMediaType.put(StringUtils.lowerCase(documentFormat.getMediaType()), documentFormat);
    }

    @Override
    public DocumentFormat getFormatByExtension(final String extension) {

        return extension == null ? null : fmtsByExtension.get(StringUtils.lowerCase(extension));
    }

    @Override
    public DocumentFormat getFormatByMediaType(final String mediaType) {

        return mediaType == null ? null : fmtsByMediaType.get(StringUtils.lowerCase(mediaType));
    }

    @Override
    public Set<DocumentFormat> getOutputFormats(final DocumentFamily family) {

        return Optional.ofNullable(family).map(docFam ->
        // Use fmtsByMediaType since fmtsByExtension may contain the same
        // DocumentFormat with multiple extensions (e.g: jpg, jpeg).
        fmtsByMediaType.values().stream().filter(format -> format.getStoreProperties(docFam) != null)
                .collect(Collectors.toSet())).orElse(new HashSet<>());
    }
}