org.roda.wui.common.HTMLUtils.java Source code

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Here is the source code for org.roda.wui.common.HTMLUtils.java

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/**
 * The contents of this file are subject to the license and copyright
 * detailed in the LICENSE file at the root of the source
 * tree and available online at
 *
 * https://github.com/keeps/roda
 */
package org.roda.wui.common;

import java.io.IOException;
import java.io.Reader;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;

import org.roda.core.RodaCoreFactory;
import org.roda.core.common.Messages;
import org.roda.core.common.RodaUtils;
import org.roda.core.data.common.RodaConstants;
import org.roda.core.data.exceptions.GenericException;
import org.roda.core.storage.Binary;

import com.google.common.io.CharStreams;

/**
 * HTML related utility class
 * 
 * @author Hlder Silva <hsilva@keep.pt>
 * @author Luis Faria <lfaria@keep.pt>
 * @author Sbastien Leroux <sleroux@keep.pt>
 */
public final class HTMLUtils {

    /** Private empty constructor */
    private HTMLUtils() {

    }

    public static String descriptiveMetadataToHtml(Binary binary, String metadataType, String metadataVersion,
            final Locale locale) throws GenericException {

        Map<String, String> translations = getTranslations(metadataType, metadataVersion, locale);

        Reader reader = RodaUtils.applyMetadataStylesheet(binary, RodaConstants.CROSSWALKS_DISSEMINATION_HTML_PATH,
                metadataType, metadataVersion, translations);
        try {
            return CharStreams.toString(reader);
        } catch (IOException e) {
            throw new GenericException("Could not transform PREMIS to HTML", e);
        }
    }

    public static String preservationMetadataEventToHtml(Binary binary, boolean onlyDetails, final Locale locale)
            throws GenericException {

        Map<String, String> translations = getEventTranslations(locale);

        Reader reader = RodaUtils.applyEventStylesheet(binary, onlyDetails, translations,
                RodaConstants.CROSSWALKS_DISSEMINATION_HTML_EVENT_PATH);

        try {
            return CharStreams.toString(reader);
        } catch (IOException e) {
            throw new GenericException("Could not transform PREMIS to HTML", e);
        }
    }

    public static Map<String, String> getTranslations(String descriptiveMetadataType,
            String descriptiveMetadataVersion, final Locale locale) {
        Map<String, String> translations = null;
        Messages messages = RodaCoreFactory.getI18NMessages(locale);
        if (descriptiveMetadataType != null) {
            String lowerCaseDescriptiveMetadataType = descriptiveMetadataType.toLowerCase();
            if (descriptiveMetadataVersion != null) {
                String lowerCaseDescriptiveMetadataTypeWithVersion = lowerCaseDescriptiveMetadataType
                        + RodaConstants.METADATA_VERSION_SEPARATOR + descriptiveMetadataVersion;
                translations = messages.getTranslations(RodaConstants.I18N_CROSSWALKS_DISSEMINATION_HTML_PREFIX
                        + lowerCaseDescriptiveMetadataTypeWithVersion, String.class, true);
            }

            if (translations == null || translations.isEmpty()) {
                translations = messages.getTranslations(
                        RodaConstants.I18N_CROSSWALKS_DISSEMINATION_HTML_PREFIX + lowerCaseDescriptiveMetadataType,
                        String.class, true);
            }

        } else {
            translations = new HashMap<>();
        }
        return translations;
    }

    public static Map<String, String> getEventTranslations(final Locale locale) {
        Messages messages = RodaCoreFactory.getI18NMessages(locale);
        return messages.getTranslations(RodaConstants.I18N_CROSSWALKS_DISSEMINATION_HTML_PREFIX + "event",
                String.class, true);
    }

}